STAAD Pro V8i Research Articles

PUSHOVER ANALYSIS OF EARTHQUAKE RESISTANCE RCC STRUCTURE USING STAAD.PRO SOFTWARE

RCC structure has become crucial to the construction industry in recent decades. A structure must be designed with strong seismic performance in mind. A multi-story reinforced concrete building's seismic performance is planned in compliance with the current Indian code (IS 456 -2000). The study of each structural members performance is conducted using nonlinear static analysis. This paper study about a popular method to ascertain the performance level of a building is through pushover analysis, which yields results that indicate whether collapse occurs at the member or structure level. Performance-based design is used to evaluate the performance level of buildings subjected to earthquakes. Various approaches in nonlinear static analysis were developed to study the performance of a building. This assessment has taken into account a non-existing solid Rcc structure that is assumed to be located in Zone IV, as defined by IS 1893:2000, a classification of seismic zones in India. During the entire inquiry, brick work infills have been considered to be non-structural individuals. Systems for inelastic static static study include the Secant Method, the Displacement Coefficient Method, and the Capacity Spectrum Method. Pushover Analysis, a non-direct static approach, was used to examine the structure's weak points, building on static testing. The structure was recreated in SeismoStruct Version 5.2.2 using M20 cement and Fe415 steel support, as predicted in STAAD Pro v8i. After that, the research is carried out for 150% of the predetermined objective displacing for the structure to track individual yielding and the sufficiency of the core quality. The degree of damage suffered by the structure during the objective displacing is thought to represent the damage the structure would experience under configuration level ground shaking. Key Words: Pushover analysis, RCC structure, Pushover curve, drift velocity, STAAD.PRO, Earthquake structure.

Comparatively Design and Analyze Elevated Rectangular Water Reservoir with and without Bracing for Different Stagging Height

A water tank, like a container that stores liquids, are categorized based on shape studies predict the analysis and design of rectangular as well as circular overhead water tanks through the usage of STADD PRO software. Storage reservoirs, especially overhead tanks, serve the purpose of storing and distributing water to consumers. Water supply planning may not have been adequately done for the recently built Overhead Circular Tank to meet the increasing demands of the expanding urban population. Branched distribution systems could be in several scenarios, including rural irrigation and the distribution of reclaimed water. Time is approaching when the need to conserve and store water becomes so essential. In such moments, it is crucial to develop cost-effective methods for storing and distributing water. The water that is stored in overhead water tanks is strategically placed. The overhead tank is vital as it serves as a common public utility structure. The distribution to nearby areas can be done without the need for pumping!!! The cost efficiency of overhead storage water tanks relies significantly on the quantity of concrete and steel needed for tank construction. As an initial resolution to this issue, it is essential to develop a water storage project based on STAAD principles, famously known as Overhead Water Reservoir. The current study covers the analysis and design of an elevated circular water tank using STAAD.Pro V8i. The design involves manual load calculations and the analysis of the entire structure using STAAD Pro V8i. The method of design used in the STAAD.Pro analysis is Limit State Design; the water tank is being subjected to various loads such as wind load, deadload, self-weight, and hydrostatic load due to water.

Comparative Analysis of Annular Raft and Solid Raft

Abstract: The goal of the study is annular mat foundation in various modern structures: Circular tower-shaped structures, like, microwave towers,TV tower, cooling towers, overhead water tanks, etc For this purpose, three raft cases are considered, which are mentioned below. (1) Intze overhead tank Annular raft with net SBC 24Kn/m2 (2)Intze overhead tank Circular Solid raft This study aims to evaluate these foundation systems' structural behavior and performance aft's outer radius is also taken as a variable for obtaining different results in our thesis work. An F.E.M.-based analysis is done to determine critical moments and deflections in both annular and circular rafts. Comparison of this base pressure critical moments, shear force, bending stress, and deflections are made based on the above-mentioned case, including the cost comparison foundation. The concrete grade is M-30, and HYSD FE 500 steel reinforcement is used in design calculation. The load combination is followed as IS 1893-2016 and IS 456-2000—seismic zone 3. The software package staad pro v8i and connect edition is used. To provide relevant calculations, Microsoft Excel is used.

Structure planning of 13470 DWT capacity jetty on Liquid Berth II Caspian Sea, Turkmenistan

Liquified Natural Gas is one of the products produced from refineries in the Caspian Sea. LNG production increases due to demand, causing the addition of new offshore platforms. To provide loading and unloading services for LNG, a special dock is needed, for this reason a special liquid bulk jetty with a capacity of 13470 DWT is planned. Structural planning using STAADPRO V8i Select Series 6 software, using British standards in planning. The jetty structure is expected to be strong against the loads that work due to environmental conditions and ship impacts. Structural analysis is carried out by comparing the structure’s Unity Check Ratio value with the Unity Check Ratio permitted based on applicable standards. The result is that the structure is able to withstand the working load with details of 4 Breasting Dolphin structures, 2 Mooring Dolphin structures, 1 Jetty Head Platform structure, and 1 Trestle structure.

Design of mutli-storied building with and without soft stories using STAAD Pro

Soft stories are one of those structures containing structural irregularities, especially vertical irregularities. Soft stories case is generally related to sudden and abrupt change or increase in the stiffness of the storey. This soft storey is soft target for dynamic displacing forces, especially in the horizontal direction, due to its more flexibility in nature and leads to collapse of structure which it supports and, thus ultimately whole structure collapse in shear. If not designed well, soft storey causes failure not only due to external forces but also to drifting of mass by external lateral forces, from its original position. In the present study, the analysis of the ten-storey building with or without soft storey was carried out to investigate the effect of soft storey under identical loading conditions as per Indian standards. The previous studies were carried out on the structures considering ground floor as soft storey. Structure has been modeled and analyzed using well established software Staad-Pro V8i. Results showed that drift of M5 type structure was increased by 1.6 times approximately M0 type structure. Base shear was reduced by due to reduced stiffness by 7.5% and time period in the orthogonal direction increased by 5%.

Analysis and Design of Transmission Tower Using STAAD Pro V8i

Analysis and Design of Transmission Tower Using STAAD Pro V8i

Study on non-linear analysis of arch bridges subjected to ground motion

Thanks to the cantilever launching technique, arch bridge building has once again become popular throughout the world. Today, these structures are one of the three main types of long-span bridges, along with suspension and cable-stayed bridges. Arch bridge structures have a complex behavior during powerful earthquakes because the arch rib is an element that is primarily susceptible to a large axial compression force brought on by dead loads. The nonlinear dynamic analysis of an arch bridge using STAAD Pro V8i software with earthquake loading is the subject of this research. Due to their easy load bearing qualities, arch bridges with short and medium spans are currently being constructed frequently for traffic bypass. Therefore, it is necessary to assess its stability in the event of a powerful earthquake. The STAAD-modeled arch bridge's nonlinear, time history analysis. The research in this study uses pro. For Time History analysis, data from the Bhuj Earthquake of 2001 is used, and the Rudramata Bridge, which collapsed during the Bhuj Earthquake, is researched. The primary focus of this study is on the analysis of the displacement, time-velocity, and time- acceleration responses of an arch bridge to lateral loads. And the results demonstrate that the displacement for the arch bridge is less than that for the Rudramata Bridge in all three directions.

Role of Importance Factor on Reinforcing Steel

Abstract: Aim is to study the change in reinforcing steel (percentage change) once we change the Importance Factor during the seismic analysis of a building. Importance factor classifies various structures on the basis of value 1 or 1.5 or even more depending on the structure importance. This value is provided in the seismic analysis of a building using STAAD PRO V8i version. The current code gives the Importance Factor value as “1” in case of “general buildings” and “1.5” in case of public or we can say important buildings. It also makes important buildings as heavier sections by increasing design base shear. There is no proof that how this importance factor works or improves the seismic factors of a building. In this study, the aim is to make a simple Bay frame using STAAD PRO for the purpose of analysis under seismic conditions and varying this respective importance factor and noticing the percentage change in steel reinforcement and the type of bars that are being used.

Dynamic Analysis of Irregular Multi- Storied building using Staad pro

The topic “Dynamic analysis of multistoried irregular building using Staad pro”is a topic of major concern as with industrialization and development most of the population opt for urban areas. The structural stability of a building has to be compromised in order to attain lateral loads due to earthquake and wind in concurrence to gravity loads. Hence, it is quite evident for a structure to have sufficient strength and enough stiffness to resist loads. Design and analysis nowadays are convenient as well as affordable just because of the availability of computers and specialized programs. The multistoried building is designed using software Staad pro v8i. The paper deals with analysing three different models of irregular multi story building (G+10) with a height of each floor as 3m having response factor as 5, importance factor as 1.2, soil type as medium soil, structure type 1 with a damping ration of 5% is taken into consideration. The loads being used in the analysis are Dead load which is considered as per IS 875 part 1, live load as per IS 875 part 2 and seismic load as per IS 1893 part 1. The beams, columns and slabs are celibately designed in software. Results of three models are then compared as per storey drift, displacement and base shear.

Seismic Analysis of Soft Storey Building in Earthquake Zones

In this paper (G+8) building is modeled like a bare frame, a bare frame with the shear wall, and a bare frame with X bracing by changing the soft storey to different floors. The static analysis effect is determined for all three models with zone IV and zone V using Staad pro-V8i software. The main objective of the research was to assess the impact of a soft storey in various earthquake zones and by varying places of the soft storey from first to the top floor and for frames with different column shapes by seismic analyses in staad pro. The results of variable building models are obtained from the research regarding various parameters such as displacement, storey drift, and base shear. More significantly, comparing different structural systems revealed a reduction in lateral displacement and story drift. The shear wall reduced the Storey Displacement by 98.838% and storey drift by 99.86%. The Steel bracing reduced the Storey Displacement by 97.846 % and storey drift by 92.6%. Finally, it has been found that the Shear wall reduces lateral displacement and storey drift, thus significantly contributing to greater structural stiffness. The analysis results recommended that the shear wall use reinforced concrete frames for the seismic hazard zones and the Steel bracing recommended for the low seismic zones.

On Structural Design of Steel Roof Truss Geometry Used in Factory Shed

Use of steel is steadily increasing all over the world in civil engineering related fields due to its superior material properties like high strength and durability, high ductility, light weight etc. Various types of steel structures become more popular because of their high aesthetic appearance. Among these steel structures, roof trusses are widely used to cover large column free open areas like shopping malls, auditoriums, car parking lots, stadiums as well as factory sheds etc. Design of steel truss members is an important aspect to the practicing civil engineers. Hence this paper aims to study the design and analysis of different types of truss geometries used in a factory shed using commercial well-established software package STAAD Pro V8i. Various types of truss geometries like Pratt truss, Howe truss, Fink truss are considered in the present investigations with different aspect ratios. Besides these truss geometries, portal frame geometry is also taken up here to examine the best suitable geometries which are to be used as roofing units in industrial purposes. The results obtained from the present numerical experimentations are studied meticulously to extract a set of meaningful conclusions regarding the design and optimum choice of steel truss geometry which is used as roofing units in industrial sheds. The practical design guidelines along with the best choice of roof trusses are highlighted in the results and discussions section of this paper.

Performance Comparison of PEB Structure for Lateral Loads Using Different Bracing Systems

:The main objective of this project is to analyse & study the comparative performance of PEB structure with and without bracings such as X, V, Inverted V, Forward Diagonal Bracing, Backward Diagonal Bracing, K Bracing using Staad Pro V8i software. In earthquake zone the displacement and deflections of the structures will be more so to have more stiffness to the structure bracings are provided, hence this study compares the structures results with various bracings to find the best structure for lateral loads. All the considered structures have been subjected to various loads such as dead loads, live loads, earthquake loads. This study is mainly based on Static Equivalent Method of Analysis. Analysis was done as per IS:1893-2016. The results provide good evidence about the various parameters and show their performance on different conditions of the structure. For the obtained results we will check and conclude the best performing structure among all the other considered structure.

Comparative Study on Seismic Analysis of RC Structure with and Without Floating Column Including Lateral Load Resisting Systems

: Soft storey, vertical or plan irregularity, floating column, and high loads are all common features of modern multi-story structures. In metropolitan India, these kinds of buildings are becoming increasingly popular. According to the findings of previous earthquake research, most RC buildings with such flaws are extremely undesirable in seismically active locations. These effects occurred as a result of a variety of factors, including nonuniform mass distribution, stiffness, and strength. This study uses the software STAAD PRO V8i to discuss the seismic analysis of a multi-storey G+7 building with floating column built in seismically active area, observing its responses to external lateral force generated on the building in seismic zone 5,including different lateral load resisting systems. The structure is represented in ten different model cases. Model 2 contains a floating column structure, Model 3includes increased column size on the ground floor. Models 4, 5, 6 and 10 contain different types of bracing (type 1, type 2, type 3 and type 4) which are installed one after another from the ground floor to the top floor and modelled separately. Shear core/shear tube is introduced in model 7 and 9 with thickness 0.2m running from ground to top. Shearwalls of 4 typesareintroducedinmodel8withthicknessofwallas0.3mrunning from ground floor to top. Thus, alternative measures involving improving non uniform distribution in irregular buildings, such as multi storey buildings with floating columns, were highlighted, and the safer design of such buildings in seismically active areas was recommended, taking into account the results observed from base shear, storey drifts, storey displacements, bending moment using Equivalent static method. As a consequence of the results, we determined that the introduction of a single bracing/strut contributes to the maximum reduction in shear force and bending moment compared to all model cases, Shear core structure withstands the highest seismic load of any model, When the columns are completely removed to create a floating column design, the % increase in maximum drift is 67.65%, indicating the minimum lateral resistance compared to all model cases.

Comparative Study of Regular and Irregular RC Structure in Different Seismic Zones and Soil Types

The resistivity of lateral forces (Wind and Seismic loading) by any structure is very much challenging. It is also one of the reasons for the failure of the reinforced concrete (RC) structure due to its asymmetric distribution of mass, strength, stiffness, and non-uniform geometrical configurations. Knowing the effect of various soils in the construction of RC structures is essential to determine the structural performance in the presence of seismic load ahead of construction. This research aims to compare regular and irregular RC structures in different seismic zones, and soil types with the provisions suggested in IS code 1893(part1):2016 and IS 875(part3):2015 using STAAD Pro V8i. Research work calculated the critical design loading for multi-story buildings put through basic wind speeds of 50 m/s and seismic zones (II, III, IV, V). The response of a G+20 storeyed RC framed building to seismic loads is examined using Indian Standard code IS 1893(part1):2016 and wind loads using Indian Standard code IS 875(part3):2015.

Effect of outrigger-belt truss system on the storey drift and maximum displacement of high-rise building

High-rise structures are becoming more common around the world, posing new challenges that necessitate ongoing technological foresight. When a structure’s height rises, it’s anticipated to have a lateral load-resisting system other than shear walls in place to negate the effect of lateral loads. However, advances in structural design and engineering have enabled building systems to withstand lateral forces such as wind and seismic stresses. There are numerous structural solutions tailored to resist lateral forces in the structure without adding to the plan area of the building to stabilize it against lateral load. The Outrigger-belt truss system is a common structural solution for successfully managing excessive drift caused by the lateral load. Hence, in this project, an attempt is made to investigate the characteristics of an Outrigger-Belt truss system. The seismic analysis is limited to the linear static method. A comparative analysis is done using STAAD Pro V8i SS6. Finally, the storey drift and maximum displacements obtained are calculated and the results are compared with the moment-resisting frame and the values are tabulated.

Structural Behaviour of Metakaolin Geopolymer Concrete Wall-Type Abutments with Connected Wing Walls

This study work is related to exploring the role of connected wing walls in changing the behaviour of a metakaolin geopolymer wall type abutment when acted upon by all the forces that are generally applied on a short-span bridge. The modelling of abutment with connected wing walls is done using the STAAD Pro V8i SS6 software and all the loading applied for the analysis as per IRC: 6-2016. The modelling is done using the 4-noded plate elements for all the members, and the plate elements here are meshed using the quadrilateral meshing feature. The behaviour of the metakaolin geopolymer wall-type abutment is analyzed using various models with changing the basic parameters such as length of the wing walls, height of the walls, number of lanes on the bridge, and type of live load on the bridge. The various results are obtained in the form of bending moments from all the cases, which show us some really interesting behaviour of the abutment wall and the wing walls. As the length of the wing walls is increased, they take up more horizontal moments than the abutment wall and the deflection behaviour of the wing walls is way different than that of cantilever wall, and hence, it shows that the design aspects of the wing walls need to be checked. Also, the connected wing walls cause horizontal moments in the middle of the abutment wall, which is an interesting result; as now, it proves that after casting wing walls monolithically to the abutment wall, the design of the abutment wall cannot be done as cantilever wall, and we need to take care of this horizontal moment by providing required reinforcement. Also, as the length of the wing walls is short, the torsional moments become critical.

Design and Analysis of Prestressed Shell Roof Structures

Abstract: In this paper, pre-stressed precast substantial Shell roof structures is proposed as an option in contrast to customary roof structures. plan of shell roof top utilizing supported concrete is extremely challenging. To oppose the high strain in base harmony, the substantial support should be pre-stressed. Here, the displaying of various setups of prestressed precast substantial shell roof structures is finished utilizing Staadpro v8i programming by changing its mathematical boundaries, for example, shapes, slant, length and dispersing of the support and investigation and streamlining is done to find the best and best prestressed precast substantial Shell roof structures designs fit to different circumstances feasible way of life implies reconsidering our approaches to everyday life, how we purchase and how we sort out our day to day existence. It is likewise about modifying how we mingle, trade, share, instruct and construct personalities. It implies changing our social orders and living in agreement with our common habitat. As residents, at home and at work, a large number of our decisions - on energy use, transport, food, waste, correspondence and fortitude - contribute towards building economical ways of life In India, customary practices that are feasible and climate well-disposed keep on being a piece of individuals' lives. India has a past filled with low carbon impression and way of life. These should be energized, rather than supplanted by more current yet unreasonable practices and advancements. This is likewise relevant to other non-industrial nations where there is a developing interest in elective models of advancement, and on restoring green cognizance drawing on conventional societies. Keywords: Precast Concrete, RCC cylindrical shell roof structures, STAAD PRO V8i, Prestressed precast shell structures

Planning Designing and Analysis of Civil Engineering Department Block at EKCTC

Abstract: The project's goal is to create a civil engineering department building at the technical campus of Eranad in Manjeri. The IS codes, Kerala Panchayat Building Rules, and AICTE Building Rules are all taken into consideration when creating the design. Layout of the building or structure is always the first step in any construction project, followed by design and structural analysis. Using AutoCAD 2017, a layout plan for the proposed building is created. The building has a main floor and two further storeys. Planning is done in accordance with Indian standard code requirements. STAAD Pro V8i is utilised to analyse the structure. The soil condition is used as the medium for the foundation's isolated footing design

Analysis of Building Constructed on an Inclined Surface Considering Different Parameters of Soil Types

Abstract: This study draws attention on proper planning and construction practices for multi-storied buildings on sloping ground. However, in usual design practice the designers generally ignorethe behavior of the building due to the effect of sloping ground. The evaluation of a G+4 storey RCC structure on varying sloping angles (00 , 150 , 200 , 250 , 300 and 400 ) were studied and also compared with the flat surface. The evaluations of the structure were carried by the software STAAD Pro v8i to study the effect of slopes on building performance. The evaluation was done to figure out the effect of sloping ground on the forces applied on the structure. Soil interaction must be suitably believed from design point of view. The Research work triesto find the truth about the earthquake-related behavior of multi storey structures on sloping angles thinking about soil-structure interaction. The horizontal reactions, bending moment in footings and axial force, bending moment in columns were critically studied to put the effectsof different sloping ground. It has been followed that the footing columns of lower height attract more forces, because ofa big increase in their stiffness, which in turn increases the horizontal forces and bending moment. So, the section of these columns should be designed for changed forces due to the effect of sloping ground. It draws attention to the need for proper analysis and designing of the structure resting on sloping surface. Overall movement of the structure with respect to different sloping ground setups is also carefully studied.

Research Paper on Analysis and Design of Steel Truss by using Angle and Tube Section

Now a days many structures such as railway station roof, aircraft hangers, airport terminals, parking garage, industrial building roof, large factory roof, multi-story roof truss, parking garages roof truss are for the best truss section which will suited for that selected steel roof truss structures because of the large spacing required heavy concreting and large quantity of steel for beam, column and slab casting so that is why, it is uneconomical and deflection in member is more. That’s why most probable solution for this condition tubular steel truss is unique solution within the economical point of view and various parameter are high in strength to weight ratio, low maintenance cost, long life span, no angularity, easy to manufacture and install. In today’s construction industry most of the steel building are constructed with critical sections of steel which is analysis and designed also built by regular practices approaches, therefore result of such structures are under in heavy loads or highly expensive structures. So tubular trusses are the most effective and best possible replacement for regular steel angle section. As we compare various section it is best construction industry as one of the types of steel section is most light weigh, with less economy, and other technical parameters. For low-cost economy point of view which is the main objective of the research work includes comparison of regular steel angle section structures with tube section structure for selected steel roof truss conditions. After reading literature review it is found that 15-20% cost is saved by using tube section. Analysis and design of steel roof truss elements was carried out by STADD PRO V8i computer software, by manually applying Indian Standards codes of practices. The advantage of tube section buildings is under the economy of roof truss design. There are totally different ten types of the steel roof truss section available in market. As we comparing two of them which are angle and tubular section. Other are I- section, T-section, Channel Section, Round bars, square bars, Corrugated Sheet, expanded metals, Flat sheets. This research study is carried out to provides in comparing that which method is low in economy, more load capacity of load transport of roof to purlins and purlins to members then member to column and further column to RCC block then RCC block to soil subgrade. Comparing both the section on the economical parameters by STAAD PRO V8i Software by calculating steel take off and price comparison of both the section. Also comparing parameters like node displacement, node reaction, beam reaction, min. & max axial forces and beam stresses. Structural analysis and design of both section by STADD PRO V8i computer software. After reviewing literature review papers final research paper is based on optimum and accurate steel roof truss design. Manually calculate dead load, dead load and wind load by using Indian Standard Code of Practice IS 800:2007 and IS 875(Part 3)-1987. The STAAD PRO OUTPUT method is used for determining the quantity of steel (weight) & other parameter like max. vertical displacement, max. & min. vertical force, moment at X-axis, moment at Z- axis. After analyzing fully deciding and comparing least value of quantity of steel take off in software considered as most economical truss. Key Words: Structural Analysis, Conventional/Traditional Steel Truss, Angle Section, Tube Section, AutoCAD, STAAD PRO V8i, Steel Roof Truss, IS 800: 2007, IS 806: 1968, IS 875 : 1987 for Tube Section, etc.