Analysis Of Multi-storey Buildings Research Articles

Dynamic Analysis of Multi Storey Building with Plan Irregularity and Vertical Irregularity under Different Bracings Systems

The rapid growth in population in urban area has given rise to the increase in construction of multi storey buildings in urban area to reduce the pressure of accommodation. In recent time designing aesthetically beautiful and complex buildings which has irregularities in plan, vertical irregularity, mass irregularity etc are done. But for high rise multi storey building the wind loads and seismic loads play dominant role. Buildings with irregularities suffer more damage than regular buildings when subjected to wind and seismic loads. Bracings, shear wall are some of the structural elements which can resist lateral loads. Bracings are highly effective and economical method of resisting seismic and wind loads. The objective of this study is to study the behaviour of building with bracings and without bracings under different seismic and wind zones using ETABS 2016 software. In this project the bracings selected are X bracings, v bracings, inverted v bracings. The bracings which gives better lateral resistance is found after analysis. In this project seismic analysis is done in two methods Response Spectrum analysis and Time History analysis and the deviation in results between the two methods are investigated.

Design and Analysis of Multistory Building by using Shearwall Technology

In early 20th century there is a revolutionary change in software development and programing that change also helped the field of civil and structural engineering to make the analysis made easy by developing easy user interface software’s. By the development of those sophisticated structural design software’s even the G+10 building can analyze and design within 48 hours of time. But if the same building, if we design by manual calculations it takes lot of time and the design report is like a book with thousands of pages. In this particular thesis the G+5 residential building is designed by adopting structural wall systems without any columns. The analysis and design of super structure done in Etabs software for dead load, live load, earthquake, wind load. The uncracked model is prepared and checked against the lateral deflections due to lateral forces and vertical deflections of elements due to self-weight and modal analysis is carried out. The modal analysis is carried based on tall story code and earth quake codes, the translation modes and rotation modes are observed Cleary and designed the structure against the torsional buckling also. The same structure is also analyzed and designed for serviceability criteria’s and strength criteria’s by adopting the modification factors to achieve the accurate values about the long term deflection in both vertical and horizontal direction. The auto construction sequence method adopted for the finding the long term creep deflection values of the flexure members. All the members are designed against all kind of static and dynamic loads. By adopting the geotechnical report of the soil, the foundation system is adopted based on the S.B.C value and the allowable settlement value and the shear stress and settlement and soil pressure values are checked. The design of the entire footing system along with soil structure interaction is done in SAFE software and the detailing and design of the elements are done by taking one element in each type in drafting software.

Analysis of Multi-Storey Building in Different Seismic Zones of India

Analysis of Multi-Storey Building in Different Seismic Zones of India

English

English

Seismic Analysis of Multi Storied Building in Different Zones

Seismic Analysis of Multi Storied Building in Different Zones

Comparative Seismic Analysis of Multi Storey Building with Flat Slab and Conventional Grid Slab

Comparative Seismic Analysis of Multi Storey Building with Flat Slab and Conventional Grid Slab

Analysis of Multi-Storey Building with and without Floating Column

Analysis of Multi-Storey Building with and without Floating Column

Seismic Analysis of Multi Storied Building with Shear Walls of Different Shapes

Seismic Analysis of Multi Storied Building with Shear Walls of Different Shapes

English

English

Deflection Analysis of Multi Story Building G+10 in Various Seismic Zones with and Without Base Isolation Using Etabs

Deflection Analysis of Multi Story Building G+10 in Various Seismic Zones with and Without Base Isolation Using Etabs

Seismic Analysis of Multi Storey Building with Flat Slab Resting on Plain and Sloping Ground

Seismic Analysis of Multi Storey Building with Flat Slab Resting on Plain and Sloping Ground

English

English

Lateral stability analysis of multistory buildings using the differential transform method

The determination of the critical buckling load of multistory structures is important since this load is used in second order analysis. It is more realistic to determine the critical buckling load of multistory structures using the whole system instead of independent elements. In this study, a method is proposed for designating the system critical buckling load of torsion-free structures of which the load-bearing system consists of frames and shear walls. In the method presented, the multistory structure is modeled in accordance with the continuous system calculation model and the differential equation governing the stability case is solved using the differential transform method (DTM). At the end of the study, an example problem is solved to show the conformity of the presented method with the finite elements method (FEM).

Analysis of Multistorey Building with Floating Column

Analysis of Multistorey Building with Floating Column

Seismic Analysis of Multi-Storey Buildings Resting on Normal and Sloping Grounds in Different Seismic Zones with and without Base Isolator

Seismic Analysis of Multi-Storey Buildings Resting on Normal and Sloping Grounds in Different Seismic Zones with and without Base Isolator

Threshold Value Method and its Application in Dynamic Analysis of Spatial Latticed Structures

In traditional mode superposition method, vibration modes are truncated based on an accumulation criterion of mass participation factors. This proves to be efficient for the seismic analysis of multi-storey buildings but not so much for spatial latticed structures. This paper analyzes the mechanical differences between multi-storey buildings and spatial latticed structures under dynamic loads and develops two new types of structures, namely Member Shear Resistance Structures (MSRS) and Member Axial Resistance Structures (MARS), with which the application of the mass participation factor is clarified. This paper further introduces Dynamic Work Participation Factor (DPF) and Static Work Participation Factor (SPF) based on vibration mode energy contribution, and proposes Threshold Value Method (TVM) for dominant vibration mode selection. Numerical examples attest that TVM is both efficient and accurate in linear dynamic analysis of spatial latticed structures.

Development of a wind tunnel model compared with results of method of initial parameters and BS6399 models for dynamic analysis of multi-storey building subjected to aerodynamic loadings

The research investigated the development of a wind tunnel model compared with results of method of initial parameters and BS6399 models for dynamic analysis of a multi-storey building subjected to aerodynamic loadings. The dimensional analysis which based its concept on the law of motion and energy conservation was used as wind tunnel experimental data assessment tool, for the determination of the aerodynamic loadings for a multi-storey building. Although, this problem was earlier solved using dimensional analysis with different approaches by many Scholars but such solutions did not include an important quantity; the influence of the structure’s deflection (δ) and foundation infinitesimal rotation. The study observed that, the non-stationary component is also dependent of the stationary component of the aero-dynamic force. It also explained how the product of the Strouhal number (St) and model relative displacement (Lo number), is equal to the Bernoulli universal constant, 0.5. Tests on most important parameters capable of influencing the assessment and design of multi-storey buildings with varying height-breadth ratio, basic wind speeds, relative displacement and aspect ratio increased with logarithmic laws as a function of model height; but the reduced frequency, decreased with polynomial and power laws respectively. It was therefore concluded that, aero-elastic damping property of the structure is influenced by the Lo number and in particular, λ. Finally, the cumulative base moment from the mathematical (method of initial parameters) model is 2.108% higher than the physical model result and the results from the BS6399 model was less by 1.732%. In general, a difference varying between ±2.1% is within acceptable level of deviation for most conventional engineering and scientific design results. Key words: Dimensional analysis, Strouhal number, Bernoulli universal constant, wind tunnels, initial parameters, BS6399, multi-storey buildings, aero-elastic damping, aero-dynamics loadings.

Nonlinear Seismic Response Analysis of Concrete Perforated Brick Masonry Building

In order to grasp the seismic performance of the concrete perforated brick masonry building, nonlinear dynamic analysis is used for seismic response analysis of multi-storey building. In the degradation of trainer restoring force model,it is proposed that the yield moment of the inflection point is calculated by linear interpolation, the unloading time of inflection point is calculated by the precise non-iterative, which approach to improve the accuracy and efficiency of nonlinear analysis. Example shows: concrete perforated brick masonry structure in the 7-degree multi-zone can be widely used.

Java-powered virtual laboratories for earthquake engineering education

This paper presents a series of Java-Powered Virtual Laboratories (VLs), which have been developed to provide a means for on-line interactive experiments for undergraduate and graduate education. These VLs intend to provide a conceptual understanding of a wide range of topics related to earthquake engineering, including structural control using the tuned mass damper (TMD) and the hybrid mass damper (HMD), linear and nonlinear base isolation system, and nonlinear structural dynamic analysis of multi-story buildings. A total of five VLs are currently available on-line at: http://cee.uiuc.edu/sstl/java and have been incorporated as a reference implementation of educational modules in the NEESgrid software (http://www.neesgrid.org/). © 2005 Wiley Periodicals, Inc. Comput Appl Eng Educ 13: 200–212, 2005; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20050

Free vibration analysis of multi-storey buildings with narrow rectangular plane configuration

In this paper, the general solutions of free vibrations of one-step cantilever shear plates with variably distributed mass and stiffness are derived by selecting suitable expressions, such as power functions and exponential functions, for the distributions of stiffness and mass along the height of the plates. Then the general solutions of one-step shear plates are used to derive the general solutions and frequency equations of multi-step cantilever shear plates by using transfer matrices. A numerical example demonstrates that the calculated dynamic characteristics of a building with narrow rectangular plane configuration (narrow building), which is considered as a cantilever shear plate with variable cross-section, are in good agreement with the corresponding experimental data. It is shown that when the stiffness of each floor of a narrow building can be treated as infinitely rigid, such a building can be considered as a cantilever shear bar which is a special case of a cantilever shear plate. Thus, the proposed methods in this paper are suitable for the calculation of free vibrations of narrow buildings and common shear-type buildings.