scholarly journals Dynamic Analysis on RCC and Composite Structure for Uniform and Optimized Section

2021 ◽  
Vol 9 (12) ◽  
pp. 1114-1127
Author(s):  
Ankit Kumar
Keyword(s):  
Dynamic Analysis ◽  
Composite Structure ◽  
Composite Structures ◽  
Response Spectrum ◽  
Steel Structures ◽  
Seismic Zone ◽  
Dead Weight ◽  
Conventional Concrete ◽  
High Rise ◽  
Time Period

Abstract: This study examines the composite structure that is increasing commonly in developing countries. For medium-rise to high-rise building construction, RCC structures is no longer economical due to heavy dead weight, limited span, low natural frequency and hazardous formwork. The majority of commercial buildings are designed and constructed with reinforced concrete, which largely depends on the existence of the constituent materials as well as the quality of the necessary construction skills, and including the usefulness of design standards. Conventional RCC structure is not preferred nowadays for high rise structure. However, composite construction, is a recent development in the construction industry. Concrete-steel composite structures are now very popular due to some outstanding advantages over conventional concrete and steel structures. In the present work, RCC and steel-concrete composite structure are being considered for a Dynamic analysis of a G+25-storey commercial building of uniform and optimized section, located at in seismic zone IV. Response Spectrum analysis method is used to analyze RCC and composite structure, CSI ETABS v19 software is used and various results are compared such as time period, maximum storey displacement, maximum storey stiffness. Maximum storey shear and maximum stoey overturning moment. Keywords: RCC Structure, Composite Structure, Uniform Section, Optimized Section, Shear Connector, Time Period, Storey Displacement, Storey Shear, Storey Stiffness, Response Spectrum method, ETABS

scholarly journals Seismic and Wind Performance of Multi-storeyed Building with Plan and Vertical Irregularities

2020 ◽  
Vol 9 (7) ◽  
pp. 606-615
Keyword(s):  
Response Spectrum ◽  
Tall Buildings ◽  
Wind Loading ◽  
Seismic Zone ◽  
High Rise ◽  
Tall Structures ◽  
Time Period ◽  
Overturning Moment ◽  
Terrain Category ◽  
Wind Behaviour

It is a big challenge that the tall buildings must withstand the various forces acting from different directions and aspects such as seismic and wind forces while designing the tall structures it is mandatory to deeply understand the seismic and wind behaviour of multi-storeyed buildings. In this study we are concerned to determine and analyse the seismic and wind behaviour of high-rise buildings some of which were regular and other had irregularities in them in their plan and elevations. Three G+30 storied buildings were considered which were situated in seismic Zone-V and analysis were carried out using response spectrum method as per IS 1893- 2016 on ETABS software. Each building is subjected to wind load at different terrain categories to examine its effects at different slopes as per IS 875 Part 3 2015.Various parameters like Auto lateral load, maximum storey displacement, maximum storey drift, overturning moment, storey shear and time period were considered in this study. It is concluded that vertical irregular building in terrain category-4 with ground slope less than 3 degree’s provides greater resistance against both seismic and wind loading among all buildings.

Static and Dynamic Analysis for Tower in a High-Rise Steel Reinforced Concrete Composite Structure

2013 ◽  
Vol 788 ◽  
pp. 558-561
Author(s):  
Jian Qiang Wang ◽  
Wen Tao Ma ◽  
Min Jing Ma
Keyword(s):  
Reinforced Concrete ◽  
Composite Structure ◽  
Linear Time ◽  
Response Spectrum ◽  
Time History ◽  
Vibration Period ◽  
Small Earthquake ◽  
Steel Reinforced Concrete ◽  
Static And Dynamic Analysis ◽  
High Rise

Steel reinforced concrete composite structure which apply in the high-rise buildings, not only save steel, but also have excellent properties in fire prevention, anti-corrosion, and seismic performance, and improve the speed of construction, economic efficiency.This thesis based on the analyse of a steel reinforced concrete composite structure tower and the domestic and foreign experts study use Finite Element Analysis software SAP2000 analyze the dynamic Performance of the structure to draw the inherent vibration period and frequency of the structure. The structure is analyzed to obtain its deformation with different height of the structural elements under a small earthquake. Structure and component in elastic stage when suffur a small earthquake. Using the mode decomposition response spectrum method and method of linear time history analysis, the maximum horizontal displacements of the structural layer, the maximum inter-story displacement and the maximum inter-story displacement angle is obtained to see if the results within a predetermined range.

scholarly journals SEISMIC ANALYSIS OF MULTISTORIED IRREGULAR AND REGULAR BUILDING WITH MASONARY INFILLS

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Ashutosh Shrivastava ◽  
Rajesh Chaturvedi
Keyword(s):  
Urban Areas ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Pushover Analysis ◽  
Seismic Zone ◽  
Soft Storey ◽  
High Rise ◽  
Frame Building ◽  
Performance Point ◽  
Open Ground

Nowadays, as in the urban areas the space available for the construction of buildings is limited. So in limited space we have to construct such type of buildings which can be used for multiple purposes such as lobbies, car parking etc. To fulfill this demand, high rise buildings is the only option available. The performance of a high rise building during strong earthquake motion depends on the distribution of stiffness, strength and mass along both the vertical and horizontal directions. If there is discontinuity in stiffness, strength and mass between adjoining storeys of a building then such a building is known as irregular building. The present study focuses on the seismic performance of regular and vertical irregular building with and without masonary infills. In the present study G+11 building is considered for the analysis with modelling and analysis done on ETABS software v17.0.1. The earthquake forces are calculated as per IS 1893 (part 1): 2016 for seismic zone III. The width of strut is calculated by using equivalent diagonal strut method. Total five models are considered for the analysis i.e. regular building with bare frame, regular building with masonary infill, soft storey building with open ground storey, mass irregular building with masonary infill and vertical geometric irregular building with masonary infill. The non-linear static analysis (pushover analysis) and linear dynamic analysis (response spectrum analysis) are performed for all the models and thereby compare their results. From analysis, the parameters like performance point, time period, maximum storey displacement, maximum storey drifts, storey shears and overturning moments are determined and also comparative study is done for all the models. From the comparison, it is observed that the vertical geometric irregular building shows better performance under seismic loading and bare frame building shows inferior performance. Moreover, the performance of masonary infilled frame building is f

scholarly journals Analytical Investigation of Composite Structure in Comparison of RCC Structure

2021 ◽  
Vol 1197 (1) ◽  
pp. 012069
Author(s):  
Vrunda R Laddha ◽  
Sharda P Siddh ◽  
Prashant D Hiwas
Keyword(s):  
Composite Structure ◽  
Composite Structures ◽  
Structural Parameters ◽  
Analytical Investigation ◽  
Static Method ◽  
Structural System ◽  
Commercial Building ◽  
Design Data ◽  
High Rise ◽  
Earthquake Zone

Abstract High rise structures becoming very common everywhere due to scarcity of land and increasing population. Though we have RCC structure system as high-rise buildings, but in RCC buildings due to bulky size of the components of the structure self-weight will be more due to the heavy density of materials. By observing the difficulties and challenges in the field of high-rise structures engineers are using efficient structural system that is Steel Concrete Composite Structure. Composite structure consists composite deck slab, composite beam and composite column. Composite Structure complies of Concrete which is good in compression and structural steel which good in tension and composition of these material makes structure better in ductility which comparatively on higher side than RCC structure. Here G+7 high rise structure is considered for analysis by ETABS software. This paper involves Analysis of Commercial building by Equivalent static method on Composite structure and RCC structure with same plan of building and same design data. The structure is in earthquake zone III and wind speed 44m/s. Analytical comparisons of both Composite and RCC frame based on structural parameters are made with help of graphs and tables. By comparing the results, we found that Steel-Concrete Composite Structures are more desirable than RCC structures.

scholarly journals Comparison of Static and Dynamic Analysis of Multi-Storied Building

2021 ◽  
Vol 9 (VIII) ◽  
pp. 441-444
Author(s):  
Arati Avinash Sabale
Keyword(s):  
Dynamic Analysis ◽  
Bending Moment ◽  
Shear Wall ◽  
Seismic Zone ◽  
Building Structures ◽  
Static And Dynamic Analysis ◽  
Time Period ◽  
Gravity Load ◽  
Local Geology ◽  
A Site

Vibration of ground is the main cause of earthquake damage to building structures. There are many factors responsible for the strength of earthquake shaking at a site including the earthquake's magnitude, the site's proximity to the fault, the local geology, and the soil type. The natural disasters have been fast recurring all over the world causing great concern and damage to man and their properties. Among these disasters Earthquake is an endogenous natural disaster, which occurs suddenly without any warning. The vast devastation of engineering systems and facilities during the past earthquakes has exposed serious deficiencies in the prevalent design and construction. Shear wall is one of the most commonly used lateral load resisting in high rise buildings. Shear wall can be used to simultaneously resist large horizontal load and support gravity load. In the study, one tall RCC building of 13 stories is assumed to be situated in seismic zone V is analysed using two methods (Static and Dynamic Analysis). The share walls are taken at different position of building. The comparison of the different shear wall models is studied in this work against the different parameters like time period, bending moment, shear force, storey drift, displacement

scholarly journals Defining Optimum Location of Shear Wall in an Irregular Building by Considering Torsion

2020 ◽  
Vol 9 (4) ◽  
pp. 2247-2251
Keyword(s):  
Dynamic Analysis ◽  
Response Spectrum ◽  
Time History ◽  
Shear Wall ◽  
Optimum Location ◽  
High Rise ◽  
High Rise Building ◽  
Suitable Location

In this paper, the optimum or suitable location of shear wall in a high rise irregular shaped building is determined. The criteria of choosing suitable location are well mentioned with suitable examples. We have tested several models in dynamic analysis with the help of ETABS ver. 16. Both Time History and Response Spectrum Methods are performed in the analysis. The paper clearly specifies the causes of torsion in a high rise building as well as it also specifies the ways in which we can control the torsion and storey displacement with the help of shear wall in the high rise buildings.

Microscopic Analyze of Insoles Composite Structures Behavior under Water Immersion, Temperature Variation and Saline

2015 ◽  
Vol 760 ◽  
pp. 287-292 ◽  
Author(s):  
Mihaela Baritz ◽  
Laura Diana Cotoros ◽  
Lucia Dumitrescu
Keyword(s):  
Temperature Variation ◽  
Structure Analysis ◽  
Composite Structure ◽  
Composite Structures ◽  
Structural Changes ◽  
Water Immersion ◽  
Microscopic Analysis ◽  
Experimental System ◽  
Effect Of Temperature ◽  
Time Period

A number of issues related to composite structure analysis of variants of insoles, commonly used for getting comfortable wearing or improvement of posture deficiencies are presented in this research paper. In the first part of a paper some variants of biomechanical system consisting of composite structures - namely foot and insoles variants undergo analysis are presented and analyzed. This study aims to determine how these insoles react to the effect of temperature and humidity parameters during different time period. In the second part of the paper the experimental system and how to choose the group of samples analyzed are presented. The results and conclusions obtained from this study and the establishing the structural changes, evidenced by microscopic analysis are analyzed in the final part of the paper.

Analytical Study on Effect of Geometry of Tall Buildings on Diagrid Structural Systems Subjected to Lateral Loads

2016 ◽  
Vol 857 ◽  
pp. 47-52
Author(s):  
Elsa Alexander Anjana ◽  
R. Renjith ◽  
Binu M. Issac
Keyword(s):  
Response Spectrum ◽  
Tall Buildings ◽  
Structural Systems ◽  
Lateral Loads ◽  
Structural System ◽  
Structural Efficiency ◽  
High Rise ◽  
Time Period ◽  
Architectural Planning ◽  
And Performance

Structural design of high rise buildings is governed by lateral loads due to wind or earthquake. As the height of building increases, the lateral load resisting system becomes more important than the structural system that resists the gravitational loads. Recently, diagrid structural system are widely used for tall buildings due to its structural efficiency and flexibility in architectural planning. Diagrid structural system is made around the perimeter of building in the form of a triangulated truss system by intersecting the diagonal and horizontal members. Diagonal members in diagrid structural systems can carry gravity loads as well as lateral loads. Lateral loads are resisted by axial action of the diagonals compared to bending of vertical columns in framed tube structure. The structural efficiency of diagrid system also helps in avoiding interior and corner columns, thereby allowing significant flexibility with the floor plan. In this paper, effect of lateral loads on steel diagrid buildings are studied. Square and rectangular buildings of same plan area with diagrid structural system is considered for the study. Diagrid modules extending upto 2,4,6,8 and 12 storeys are evaluated. Static analysis for the gravity loads, wind and earthquake and response spectrum analysis are carried out for these different combinations of plan shape and diagrid modules and performance of all these diagrid models i.e., storey displacement, storey drift and modal time period are evaluated and compared in this study.

scholarly journals Analysis of L-Shape Building with Lift Core at Different Locations And Its Torsional Effect

2020 ◽  
Vol 2 (1) ◽  
pp. 1-10
Author(s):  
Sushil Adhikari ◽  
Tek Bahadur Katuwal ◽  
Dipak Thapa ◽  
Suraj Lamichhane ◽  
Dhurba Adhikari
Keyword(s):  
Response Spectrum ◽  
Seismic Zone ◽  
Base Shear ◽  
Response Spectrum Analysis ◽  
Outer Corner ◽  
Drift Ratio ◽  
Time Period ◽  
Natural Time ◽  
Structural Responses ◽  
Seismic Forces

 In L-shape building, lift core wall is an important element for strengthening the structure of high seismic zone area. Seismic zone V is considered for most of the buildings in Nepal, which will cause maximum base shear to the structure. This study focuses the use of lift core in five and ten-storey building to resist the seismic forces, and the effect of the lift core is also taken into consideration. Based on the location of the lift core, these building are further subdivided into different models; Lift at outer corner (model 1), lift at lower edge corner (model 2), lift at upper edge corner (model 3), lift at lower and upper edge corner (model 4), lift at inner corner (model 5), and lift at inner and outer corner (model 6). Equivalent static method and response spectrum analysis was used for the analysis. The structural responses were measured in terms of modal periods, displacement, drift ratio, and torsional irregularities. Results from this study indicate that building with lift core wall at inner and outer (model 6) and lift at lower and upper edge corner (model 4) shows the minimum drift ratio, torsional irregularities, displacement and natural time period which lies within permissible limit of torsional irregularities. Hence, it can be concluded that the location of the lift core affects the torsion of an L-shape plan asymmetric building. Designing two lift core at the inner and outer corner (model 6) and lower and upper edge corner (model 4) is found to be effective in reducing the torsion.

scholarly journals Effect of Flyash in Enhancing the Strength and Durability Characteristics of Foam Concrete

2019 ◽  
Vol 8 (4S2) ◽  
pp. 60-63
Keyword(s):  
Point Of View ◽  
Mineral Admixture ◽  
Toluene Diisocyanate ◽  
Foam Concrete ◽  
Dead Weight ◽  
Conventional Concrete ◽  
High Rise ◽  
The Past ◽  
Experimental Findings ◽  
Strength And Durability

The major negative aspect of conventional concrete is having heavy density of 2400 kg/m3 and the design of buildings especially high rise structures made up of these concrete leads to high cost, high man power and high lifting devices etc. As indicated in the past researches, there are several ways in reducing the dead weight of the members. Foam concrete is one of the types which is gaining attraction in nowadays and the research towards this concrete in improving the strength and durability characteristics has many wide openings in the research point of view. This paper made an attempt to investigate the strength and durability aspects of foam concrete. In order to produce the synthetic foam, the chemical such as toluene diisocyanate and polyol are used in the ratio of 1:1.1. In order to enhance the abovesaid properties, the mineral admixture of 25% of flyash is added in the foam concrete. Based on the experimental findings, it is understood that the foam concrete with flyash can able to achieve 85% of the strength and durability properties.

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