Fixed-base Buildings Research Articles

Base Isolation and Energy Dissipating System in Earthquake Resistant Building Design

The utilization of base isolation is a crucial strategy for enhancing seismic resilience in structures. The method involves installing isolators and energy-absorbing devices beneath a building's superstructure to mitigate the destructive effects of earthquakes. When base isolation is implemented in a building, it not only makes the structure stronger and more stable, but also helps to safeguard lives and properties. This technique is particularly valuable for seismic retrofitting of historical buildings. In the present study, software called simulation of seismic isolation systems in structural analysis is employed, considering isolator characteristics, whether they exhibit nonlinear or equivalent linear behavior. Adhering to the IS 1893:2016 Code, the analysis utilized the SAP 2000 software package. A study was carried out to compare the effectiveness of base isolation systems versus fixed-base buildings in dealing with seismic activity. The study focused on analyzing various seismic indicators such as joint displacement, shear force, bending moment, building torsion, and the period of natural frequency. Results showed that models utilizing base isolation systems had significantly higher base shear values than those with a fixed-base building configuration. However, there was a significant 35% reduction in story shear values for the rubber isolation system and a 40% decrease for the friction pendulum model. Additionally, there was a 25% reduction in story drift for the rubber base model and a 30% decrease for the friction pendulum model. The friction pendulum model demonstrated the most effective control of these parameters across various seismic zone conditions. Key words: The topic of discussion pertains to Seismic Isolation with Rubber Bearing System and the Friction Pendulum Technique. Additionally, it includes SAP2000 Analysis, Story Drift Measurement, and Shear Force Evaluation in relation to these techniques.

Analisis Perbandingan Fluid Viscous Damper dan Fixed Base Terhadap Beban Siklik dengan Finite Element

The geographical location of Indonesia, which is very at risk of earthquake disasters, requires the planning of building structures that are resistant to earthquake risks, one of which is by using base isolators. A base isolator system can improve structural performance by dissipating earthquake energy with its flexibility character to increase the vibration period. One type of base isolator is the Fluid Viscous Damper (FVD), which can be applied to high-rise buildings that often experience destruction during earthquakes. This research aims to determine the energy dissipation and ductility of fixed base structures and structures using FVD with finite element method using ABAQUS application. The object of analysis of this study uses a two-story portal with a steel structure. The results of this study obtained the characteristics of the two building models are semi-ductile, but there are differences in the ductility value between the two models. Based on the calculation results, the deviation ductility value that occurs in the fixed base building model is 2.624. Meanwhile, the deviation ductility of the FVD building model is 4.104. The use of FVD can increase the ductility value by 22%. The dissipation that can be done by the fixed base building model is 0.119, and the energy dissipation value for the building model with FVD is 0.156. Using FVD can increase energy dissipation in the analyzed model by 13.45%.

Predicting crosswind response of tall buildings: Base isolation and nonlinear aeroelastic effects

This study introduces an analysis framework to evaluate the crosswind response of tall buildings under the influence of base isolation and nonlinear aeroelastic effect near the vortex lock-in wind speed. The motion-induced and buffeting forces are determined based on those in a building with a fixed base. The primary focus is on modeling the motion-induced force in tall buildings with base isolation, where no pre-existing model exists. The fundamental modal displacement is used to describe the building motion relative to the base. The Bouc-Wen model is employed to capture the hysteresis in the relation of shear force and displacement of the isolation system. Through response history analysis, the response statistics of a 65-story building with a square cross-section are determined and compared with those of a fixed-base building. An investigation is conducted to examine the impact of different isolation layer parameters on building response. Additionally, this study explores how the motion-induced force model influences the building response. The findings indicate that base isolation effectively mitigates nonlinear aeroelastic effects, leading to a significant reduction in crosswind response.

ЭФФЕКТИВНОСТЬ КВАДРАТНОГО АРМИРОВАННОГО ВОЛОКНОМ ЭЛАСТОМЕРНОГО ИЗОЛЯТОРА ДЛЯ ЖЕЛЕЗОБЕТОННОГО ЗДАНИЯ ПРИ ЗЕМЛЯТРЕСЕНИЯХ

Un-bonded fiber reinforced elastomeric isolator (U-FREI) is a relatively new type of multi-layer elastomeric isolator in which fiber layers are used as reinforcement to replace steel sheets in conventional steel reinforced elastomeric isolators. It is installed directly between the substructure and superstructure without any connection at the interfaces. Most of the previous studies on the U-FREIs supported to the base-isolated buildings are masonry or stone structures. In this study, the dynamic responses of a reinforced concrete (RC) building supported on square U-FREIs under the action of recorded real time-history ground motions of earthquakes are investigated by finite element analysis using SAP2000 software. A hypothetical 4-storey reinforced concrete building constructed in Vietnam is selected for the study. Comparison of the dynamic responses of the base-isolated building and corresponding fixed-base building is carried out to evaluate the seismic vulnerability of the base-isolated building under earthquakes. Finite element analysis results show that peak values of floor acceleration and inter-storey drifts at different floor levels, and peak value of base shear of the base-isolated building are lower than those of the corresponding fixed-base building. The U-FREIs are found to be very effective in reducing seismic vulnerability of low and mid-rise RC buildings.

Seismic performance assessment and benefit-cost analysis of mid-rise reinforced concrete base-isolated building using double-curvature friction pendulum bearings

Base isolation technology is highly advocated by the research community worldwide for efficient mitigation of earthquake-induced vibrations and alleviating seismic risks posed to civil engineering structures. However, the construction cost of implementing this advanced technique to real-life buildings compared to the conventional ones remains a debatable topic, and a research problem to examine. Therefore, the present study focuses on assessing the short- and long-term cost-benefits of base-isolated buildings vis-é-vis fixed-base buildings over their service life. Notably, the benefit-cost analysis methodology prescribed in FEMA-356 is utilized to quantify the economic consequences of natural calamities on the base-isolated building. Various aspects, such as structural responses, damage vulnerability, collapse probability, and occupancy rate are thoroughly analyzed. A real-life mid-rise reinforced concrete building in the Indian subcontinent, having double-curvature friction pendulum bearings (FPBs) at stilt level is deliberated in this study. A series of quasi-static and nonlinear time-history analyses are carried out based on the recently drafted Indian seismic code for base isolation to comprehend the improved performance of the FPB-isolated building. Additionally, two fixed-base buildings are designed with an aim to make their performance almost at par with the base-isolated building, and then to assess the cost implications of attaining such comparable performance. The outcomes of this study, particularly the structural performance enhancement and cost benefits, will assist both decision makers and structural designers to have a persuasive opinion on the better adaptability of the base isolation technology for improved seismic resistance and financial outlooks associated thereof.

Seismic response of multi-storied building with shear wall considering soil-structure interaction in Patna, India

The structural response of a building on soft or loose soil differs from that on hard and rocky soil. Investigating the behaviour of buildings with shear walls on such soft soil is essential. This study considers four structural models of the nine-storied building with and without infill walls. The modelled buildings represent the existing buildings in the Patna, India region. The frame was analysed in four different conditions: (1) Fixed base bare frame building, (2) Flexible base bare frame building, (3) Fixed base building with shear walls (4) Flexible base building with shear walls. Twenty-four pairs of scaled ground motion from the PEER Ground Motion Database were selected, and a nonlinear time history analysis was performed in SAP2000v20.0. Understanding that soil-structure interaction is paramount for building on soft soil, the study quantified the seismic response for the building in the Patna region, a region of high seismicity.Moreover, in current scenarios, multistorey buildings with an open ground storey and shear walls are prevalently found owing to their advantage for parking and enhancing the seismic capacity. The result shows that base flexibility significantly increases the peak floor displacement, total floor acceleration, inter-storey drift and displacement ductility for bare frame structures. At the same time, consideration of shear and infill walls only affects the flexible base structures. While shear and infill walls significantly affect the seismic behaviour of the fixed base structure. It was also found that the shear and infill walls increase the structure’s stiffness and thus reduce the fundamental vibration period of the structure. The study’s significant findings are (1) the shear and infill wall significantly reduces the seismic responses of the building, (2) base flexibility (SSI) increases the seismic vulnerability of the buildings, (3) the displacement ductility significantly depends on the aspect ratio (height/width) of the building, and (4) the inter-storey drift is relatively higher in the lower and mid storey of buildings.

Simulation of the E-Defense 2015 test on a 10-storey building using macro-models

The capabilities of certain standard macro numerical models were evaluated by simulating a shaking table experiment that was performed on a full-scale ten-storey fixed-base building with a frame and dual structural system in two perpendicular directions (denoted as the frame and wall directions) at the largest shaking table in the E-Defense centre in Japan. The lumped plasticity model for columns and beams, the multiple-vertical-line-element model for walls and the scissors model for beam-column joints were evaluated. The results indicated that the experiment was simulated reasonably well. The most significant discrepancy was observed between the maximum drifts along the wall direction in the strongest cycle of the strongest test (calculated drift of 1.9% versus measured drift of 1.5%). In other cycles and tests, these differences were smaller. The calculated and measured maximum accelerations along the wall direction in the strongest test were 13.8 m/s2 and 13.5 m/s2, respectively. The discrepancy between the analysis and experiment results was smaller along the frame direction. The maximum calculated and measured drifts were 2.9% and 3.1%, respectively. The maximum calculated and measured accelerations were 15.8 m/s2 and 19.0 m/s2, respectively. In general, the standard input parameters were used in the evaluated models. However, some parameters required modifications, particularly when modelling weakly reinforced beam-column joints with substandard reinforcement that were considerably damaged. Their yielding rotation and near-collapse strength were, on average, reduced to 55% and 30% of the standard value, respectively. One of the most important parameters influencing the response was the effective width of the slabs, which was increased to the total span length for the highly loaded beams. The ratios of the strength, stiffness and amount of dissipated energy in the joints, beams and columns also significantly influenced the response. The adequate ratio of the dissipated energy was obtained by reducing the standard unloading stiffness in the beams and columns. The initial stiffness considerably influenced the response, particularly under weaker excitations. This stiffness was reduced threefold to account for various factors that typically reduce its value, which, among others, includes the influence of preceding tests on the same building with sliding foundations, as well as the assembly, transportation and handling of the specimen.

Dynamic response of planar frame sub-structure isolated by friction pendulum bearings subjected to a middle column removal scenario

The aim of this study is to investigate the dynamic response of planar frame sub-structure isolated by friction pendulum bearings subjected to a middle column removal scenario. The study presents and evaluates the dynamic structural behaviors, load transfer mechanisms, progressive collapse resistance, and dynamic increase factor (DIF) results of FPBs-isolated planar frame. The study explores the influence of the equivalent radius and friction coefficient of the FPB, as well as the peripheral constraints of the failed column. The results show that the compressive arching action (CAA) and catenary action (CA) cannot be fully developed for buildings isolated by FPBs due to the significant reduction in the lateral stiffness of the isolated layer caused by FPBs. The structural responses of planar frame isolated by FPBs are much larger than those of corresponding fixed-base buildings. The DIF of buildings isolated by FPBs initially decreases and then barely changes with an increase in the stabilized vertical displacement of the failed column. The presented fitted formula for DIF of planar frame isolated by FPBs describes the obtained results well. The friction coefficient and equivalent radius of FPBs show very limited influence on the dynamic response of planar frame isolated by FPBs under progressive collapse, but reinforcing the peripheral constraints of the failed column can enhance the progressive collapse resistance of isolated planar frame.

Rapid report of seismic damage to hospitals in the 2023 Turkey earthquake sequences

The seismic performance of medical systems is crucial for the seismic resilience of communities. The report summarizes the observed damage to twelve hospital buildings in the area affected by the MW 7.8 and MW 7.5 earthquakes on February 6, 2023 in Turkey. They include five base-isolated buildings and seven fixed-base buildings in southcentral Turkey's seven most heavily affected provinces. By relating the post-quake occupancy statuses of the hospitals with the estimated seismic demands during the earthquake doublet, the report offers the following observations: (1) the base-isolated hospital buildings on friction pendulum bearings generally exhibited superior performance of achieving the goal of immediate occupancy and provided better protection for nonstructural elements than fixed-base counterparts did; (2) the fixed-base hospital buildings of reinforced concrete structures constructed after 2001 successfully achieved the goal of collapse prevention even under very high seismic demands; (3) some fixed-base hospitals also remained operational even if they were very close to the fault rupture and were subjected to higher-than-design-level earthquake ground motions.

Seismic Analysis of Irregular Buildings With And Without Lead Plug Rubber Bearings (LPRB)

Base isolation has become an effective technique that aids in earthquake hazard mitigation and has been in use for the past decade. By properly separating the structure from the horizontal ground motion components, the base isolation system lowers the likelihood of resonance. Isolators are provided at the base of the structures, and decoupling is accomplished by modifying the system's flexibility and adding adequate damping. Structures with irregular plans are gaining popularity owing to their aesthetic appearance as well as architectural designs. The response of such structures to seismic action will be different from conventional structures. This paper aims to study the effect of base isolators on structures with irregular plans, while simultaneously observing the changes occurring when the height of the structures is increased. Three unique plans are chosen, namely plus, L and T shapes, whose responses are studied on 5, 10 and 15-storeyed structures. All the columns in the base-isolated structures are equipped with lead plug rubber-bearing base isolators which is the chosen isolator for this study. The base isolators are designed for each structure specifically so that the behavioural patterns observed are as accurate as possible. From the obtained results, it is discerned that base-isolated buildings exhibited better performances in comparison with fixed-base buildings, and as the height of the structure increases the effect of the base isolator tends to decrease.

Enhancing the seismic performance of high-rise buildings with lead rubber bearing isolators

Recent earthquakes have enforced the engineering community to design seismically more efficient buildings through the energy dissipation systems. For this purpose, this paper investigates the seismic behavior of a high-rise building with a series of base isolation systems. Firstly, a 20-storey steel frame is selected as a fixed-base building, and then equipped with lead rubber bearings (LRBs). In the modelling of LRB, isolation period is alternatively varied as 4, 4.5, and 5 sec to evaluate the effectiveness of the isolator characteristic on the seismic performance of the high-rise base-isolated buildings. The seismic responses of the fixed-base and base-isolated buildings evaluated through a series of time-history analyses are performed using natural ground motion records. The analysis results are compared using engineering demand parameters such as storey displacement, isolator displacement, relative displacement, roof drift, interstorey drift ratio, absolute acceleration, base shear, base moment, input energy, and hysteretic curve. It is revealed that adjusting the isolation period in the design of LRB improved the seismic performance of the base-isolated high-rise steel buildings.

A low-cost isolator of scrap tire pads in rural construction: Evaluation of the mechanical properties and numerical assessment of the response control effects

When designing seismic isolation buildings in rural construction, the main problem required attention: the isolation bearing relatively high costs. As one type of rural isolator, scrap tire pads (STP) are considered as an effective measure to overcome this problem. However, the abrupt change of vertical stiffness, horizontal equivalent stiffness, and damping ratio of STP would result in the stability problem of the isolated structure. In addition, the factors influencing the vertical stiffness, equivalent stiffness, and damping ratio of STP are geometric parameters, loading conditions, and tire type. For these purposes, a total of 90 STP were designed, and a series of compression and shear tests were conducted. The geometric parameters included the first and second shape factor (S1 and S2). The tire type included the snow tire and all-season tire (ST and AST). Various surface pressure (4, 5 and 6 MPa) and displacement amplitudes were considered. The experimental results showed that the vertical stiffness of STP increased with the increase of the S1, S2 and surface pressure. The tire type, shape factor, surface pressure and displacement amplitudes had a significant effect on the horizontal equivalent stiffness and damping ratio. Finally, based on experimental results, a numerical response was conducted including the fixed-base structure and STP isolated structure under 4 recorded ground motions and 2 simulated waves. The results show that the peak accelerations, inter-story drifts and shear of the STP isolated structure were reduced by 56.64%, 30.00% and 26.61%, respectively, compared with the response of the fixed-base building.

Soil-structure interaction in a base and mid-story seismically isolated building

The main goal of this study is to analyze the performance of seismic isolation systems by implementing isolation to the base and inter-story of the buildings together, in order to reduce the earthquake impact in multi-story buildings. In addition the soil-structure interaction for these cases are taken into consideration. An example building model was composed to observe the effect of base isolation and mid-story isolation numerically. Analyses were performed by using SAP2000 software. A five story building was used as an example structure. Investigations were carried out for six different combinations that are: fixed base buildings, buildings with soil-structure interaction, buildings incorporating single base isolation system with and without consideration of soil-structure interaction, buildings with base and mid story isolation system with and without consideration of soil-structure interaction. Two different earthquake motions were selected for time-history analysis. The results obtained from time-history analysis were discussed comparatively, for all the base-isolation cases including and excluding soil-structure interaction. It has been concluded that the seismic isolation application of the base and mid-story improves the seismic performance of the building. In addition, it has been observed that the soil-structure interaction affects the building seismic performances according to the reference ground type.

Base Isolated connected buildings subjected to seismic and blast induced vibrations

In the present study, the passive control of closely spaced base isolated and fixed base buildings are investigated under the effects of earthquakes and blast induced vibrations. The study advocates the installation of viscous dampers (FVDs) to protect the closely spaced base isolated buildings adjacent to fixed base buildings against seismic and blast excitations. The performance of a five storied base isolated building is reviewed such that time period of isolated building (Tb) is 2.5 sec with isolation damping is assumed as 5% and connected to an adjacent fixed base building such that it has three storey and structural time period 0.5 sec. The effectiveness of damper connected base isolated and fixed buildings is also analyzed for isolation period 2 sec and 3 sec respectively. Nonlinear direct integration method has been adopted to evaluate the performance of fixed base and base isolated structures for connected and unconnected state. The equations of motions are formulated and solved using MATLAB code by Newmark’s average acceleration method. The lead rubber isolators are designed and idealized as Bouc Wen model. A parametric study is also conducted to determine the optimum damper properties for the fixed base buildings and base isolated connected buildings with viscous dampers. Results exhibit the efficiency of viscous dampers in reducing the structural responses of the base isolated buildings. It has been observed that in case of fixed base buildings, the peak responses show an effective reduction in responses. The effectiveness of the passive control technique using viscous dampers in mitigating the bearing displacements of base isolated structures subjected to seismic and blast induced vibrations is also reported.

3D coupled wind-induced inelastic response of base-isolated tall buildings with eccentricity and biaxial interaction of hysteretic restoring base forces

This study presents an analysis framework for coupled inelastic response of base-isolated tall buildings with eccentricities of mass and resistance and coupled hysteretic restoring forces of base isolation system. The upper building motion is represented by lower modal displacements. The translational hysteretic restoring forces of base isolation system are described by a biaxial hysteretic model and the torsional restoring moment by a linear elastic model. The stochastic story wind forces of the upper building are represented in their cross power spectral matrix. Response history analysis is carried out to characterize the coupled responses of a square-shaped tall building with eccentricity in the center of resistance. The results showed that the eccentricity amplifies the alongwind response but has relatively less influence on the larger crosswind and torsional responses. The eccentricity has less influence on the inelastic response of based-isolated building as compared to the fixed-base building. The base isolation with inelastic response is more effective for building with eccentricity as compared to building without eccentricity. The biaxial interaction reduces the effect of eccentricity on base displacements but increases the effect on upper building response. The eccentricity and biaxal interaction result in fast growth of time-varying mean alongwind base displacement.

Performance of RC Building with Different base Isolators

Abstract: The paper evaluates the application of base isolation methods based on the location of site. Building various sorts of structures while assuring their safety, serviceability, and durability is the focus of civil engineering. Seismic activity has severe impact on the structures' serviceability and safety. The type of building, the type of soil, the technology utilized for seismic resistant, and the location of the building, all the effects how much damage an earthquake may cause to structures. Because an earthquake alters the motion of the ground, which causes foundation failure, the effects of an earthquake are primarily dependent on the type of soil used for building foundations. Therefore, it is crucial to study how different types of soil behave during occurrence of earthquakes. A base isolation technique is one of the methods utilized in construction that can resist earthquakes. It enhances a building's structural performance when it is subjected to lateral stresses. This paper studies the effect of an earthquake response of isolated buildings and provides analysis of the base isolation on the structure's nature as well as a discussion of various isolator types. It compares the performance of two types of isolators: Lead Rubber Bearing (LRB) and Friction Pendulum Bearing (FPB). G+12 R.C structure is taken in this study & Time History analysis is performed with ETABS software. Time Period and Story Stiffness are compared for the building with the base isolator against the building with the fixed base. In comparison with a fixed base building, parameters are changed in each direction due to the presence of an isolator. The analysis examines the characteristics and the effects of base isolation on structures with the Bhuj earthquake.

Seismic Performance of Multi Story Building with Different Base Isolators

Abstract: Earthquakes are one of nature's most dangerous hazards; throughout history, they have resulted in substantial loss of life and serious property damage, particularly to man-made structures. Seismic activity of large magnitude is a major source of risk for all types of constructions. We apply unique methodologies based on performance-based seismic design to protect structures from earthquakes. One way for reducing the influence of large-scale vibration created during an earthquake is the base isolation method. Seismic isolation can be used to give an efficient solution for a variety of seismic design difficulties according to well-established practices that have been examined by several researchers. It compares the performance of two types of isolators: Lead Rubber Bearing (LRB) and Friction Pendulum Bearing (FPB). G+12 R.C structure is taken in this study & Time History analysis is performed with ETABS software. Story drift and Story force are compared for the building with the base isolator against the building with the fixed base. In comparison with a fixed base building, parameters are changed in each direction due to the presence of an isolator. The analysis examines the characteristics and the effects of base isolation on structures with the Uttarkashi earthquake.

Seismic vulnerability assessment of masonry building supported by STRP isolators

Scrap tire rubber pad (STRP) isolators are made from scrap automobile tires, which are expected to be a low-cost material for earthquake-resistant design of low-to-medium-rise buildings in developing countries. This paper describes the seismic vulnerability of a unbonded STRP (U-STRP) base-isolated masonry building using the finite element method. The three-dimensional model of the U-STRP isolators is placed between the foundation and the building without any bonding between them. As a result, the inertia force of the building is transferred to the foundation through the friction. Two alternative versions of the U-STRP isolator: strip-shaped and square-shaped, are analyzed, which have comparable geometric and stiffness properties. The fidelity of the U-STRP isolator model is confirmed using the numerical analysis and experimental results. The seismic vulnerability of the masonry base-isolated building is determined using the pushover analysis and the fragility curves and then compared to that of the identical fixed-base building. The findings show that masonry buildings with uniformly distributed square-shaped U-STRP isolators suffer low damage and base shear compared to those of the same size of strip-shaped U-STRP isolators. The U-STRP base-isolated masonry building has superior seismic performance to that of an identical fixed-base building, and a square-shaped U-STRP is more effective than the strip-shaped isolator.

Multi-hazard stochastic response assessment of base-isolated buildings

The stochastic response of multi-story buildings isolated by laminated rubber bearing (LRB), lead-rubber bearing (N-Z system), friction pendulum system (FPS), and resilient-friction base isolator (R-FBI) is investigated under the independent multi-hazard scenario of earthquake ground motion (EQGM), wind load (WL), and blast-induced ground motion (BIGM), which are considered as uncertain inputs. A polynomial regression-based Monte Carlo simulation (PRBMCS) is proposed to enable computationally efficient fragility assessment of base-isolated buildings. The suitability of the PRBMCS for stochastic assessment of the base-isolated buildings is compared with the conventional Monte Carlo simulation (MCS), response surface method (RSM) and Cloud analysis. The fragility curves obtained using the PRBMCS are in good agreement with that of the MCS relatively. The study includes: the effects of the characteristic parameters of the four base isolators on the fragility of the base-isolated buildings under the three hazards; influence of the extent of uncertainty in the excitations; and comparison of fragilities of the base-isolated and fixed-base buildings. Notably, the influences of characteristic parameters of the isolators on the fragility of the base-isolated buildings are different under the three hazards. The differences in the stochastic behaviour under the different hazards could have contradictory influences on the selection of isolation parameters.

Seismic Analysis of High-Rise Building Having Lateral Load Resisting Elements with and Without Base Isolation

Abstract: In present work linear dynamic analysis of high-rise building is done and of base isolation is analyzed with lateral force resisting elements like shear wall and bracing, effect of all these structural components is calculated and analyzed on structure having 30,35 &40 Stories. Structure is Located in Earthquake Zone IV. Analysis is done with the help of ETABS 19 software. In base isolation we bifurcate the structure from foundation so the structure remains unharmed from shocks and motion at the time of seismic action. Base isolation is awidely used lateral load resisting system provided to strengthen such buildings but literature survey of Base isolation reveals that Lear Rubber Base isolation is proved tobe determinantal. With the increase in urbanisation use of multi stories building is now in trending because of its high utility in commercial as well as residential. In northern part of India, maximum places are susceptible to earthquake so the basics requirement is to build the safe structure so that no damage to the life takes places. One among various methods of earthquake resistant design is Base Isolation. Various studies were carried out to check the behaviour of different parameters like time period, drift, storey displacement and overturning moment etc. with various types of base isolation. Use of LRB isolation system for high rise buildings was suggested. In thepresent study lead rubber bearing is used for base isolation with structure having shear wall and bracings. G+30, G+35 and G+40 storey structure are analysed. Static, linear dynamic (response spectrum) is performed to study the behaviour of building with lead rubber base isolation system. ETABSv2019 is used to perform the analysis and design. Comparison of fixed base building with LRB is shown and suitability concern is provided. It was observed from the study that Lead Rubber base isolation is more effective for earthquake prone zones.