scholarly journals Response spectrum analysis of irregular shaped high rise buildings under combined effect of plan and vertical irregularity using csi etabs

2021 ◽  
Vol 889 (1) ◽  
pp. 012055
Author(s):  
Krishna Prasad Chaudhary ◽  
Ankit Mahajan
Keyword(s):  
Spectrum Analysis ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Research Work ◽  
Bending Moments ◽  
Response Spectrum Analysis ◽  
Maximum Displacement ◽  
High Rise ◽  
Irregular Shapes ◽  
Storey Building

Abstract In this research work several high rise buildings were analyzed using CSI ETABS under the influence of the response spectrum analysis over it. Several different shaped high rise buildings such as H shaped, O shaped and C shaped buildings were taken into consideration for carrying out the research work. All three shaped buildings were of different storey that is of 12 storey and of 16 storey. For proper seismic analysis of all the above discussed buildings, response spectrum method of seismic analysis were taken into consideration. The results of all the buildings for response spectrum analysis were quite different from one another and it was found that the H-shaped building showed better results as compared to the other shaped buildings. It was also seen that the 12 storey building results were quite impressive as compared to the results of the 16 storey building. With the transference of heavy mass, very little effect was seen in latera sway i.e. variation in maximum displacement was negligible. Again, for 16 storey building, maximum displacement was found in the case L-Shaped 16 storey building with the value of 87.804 mm. Again, the transference of heavy masses had a minimal effect on total quantity and cost of the 16 Storey building. In the gist, it was concluded that, bending moments and shear forces were increased from 1.17% to 1.84%. Maximum variation in B.M and S.F. can be seen in O-shaped Building. L-shaped Building produces maximum displacement from all the three irregular shapes i.e. H-shape, L-shaped and O-shaped.

scholarly journals Seismic analysis of hybrid structures with and without shear walls

2021 ◽  
Vol 889 (1) ◽  
pp. 012045
Author(s):  
Mir Rahman Naseri ◽  
Balwinder Singh
Keyword(s):  
Spectrum Analysis ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Cost Savings ◽  
Shear Walls ◽  
Hybrid Structure ◽  
Hybrid Structures ◽  
Response Spectrum Analysis ◽  
Building Projects ◽  
High Rise

Abstract A hybrid structure is one that combines more than two different types of materials to compensate for weak places while also maximizing strength. Hybrid steel and concrete frameworks, as well as other modern materials, are unified at the member or framework unit. Hybrid structures are frequent in high-rise and super-high-rise building projects, and they provide the benefit of cost savings. Shear walls are built to withstand lateral loadings like earthquakes and winds loads. The response spectrum analysis approach is frequently used to measure design stresses for earthquake-prone structures. The modelling and analysis of the regular plan structures are done by CSI ETABS 2019 in IV seismic zones, on type II (medium soil) of India According to IS 1893 (Part-1) 2016. The aims of this study Response spectrum analysis of 41 storey RCC and hybrid structures with shear walls and without shear walls are compared. RCC and hybrid structures with shear walls showed lower storey displacement, storey drift, and story shear values than RCC and hybrid structures without shear walls, according to the results of this study. The research results will be helpful as a reference and a tool for seismic analysis of hybrid structures.

Dynamic Nonlinear Analysis of an Out-of-Code Highrise Building

2012 ◽  
Vol 594-597 ◽  
pp. 860-868
Author(s):  
Kai Hu ◽  
Ge Qu
Keyword(s):  
Nonlinear Analysis ◽  
Seismic Performance ◽  
Spectrum Analysis ◽  
Response Spectrum ◽  
Pushover Analysis ◽  
Time History ◽  
Response Spectrum Analysis ◽  
High Rise ◽  
History Analysis ◽  
Dynamic Nonlinear Analysis

The most common analysis methods of complex high-rise buildings are the response spectrum analysis, elastic time history analysis, pushover analysis and etc. Meanwhile, for the analysis of those high-rises whose height is higher than 200 meters, period is longer than 4 seconds, the dynamic nonlinear analysis would be more accurate. In this paper, the dynamic nonlinear analysis was executed in use of the Perform-3D program. The results show that the maximum top displacement can meet the national codes; most tie beams and the frame beams of the upper structure yielded in the IO~IS stage and parts reached the CP stage; both the laminated columns and the frame columns had a good performance on the shear behavior; and it is also proposed to strengthen the reinforcement at the reducted storeys. By all these above, it can be judged that the structure reached the codes’ seismic performance objectives.

Seismic Analysis of a Water Release Integrated Structure Part I: Response Spectrum Analysis of Intake Tower

2013 ◽  
Vol 470 ◽  
pp. 938-941
Author(s):  
Yong Wang ◽  
Zhen Ting Lin ◽  
Chao Song ◽  
Bo Ya Dong
Keyword(s):  
Spectrum Analysis ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Three Dimensional ◽  
Safety Evaluation ◽  
Response Spectrum Analysis ◽  
Water Release ◽  
Dimensional Finite Element ◽  
Earthquake Load ◽  
Three Dimensional Finite Element

The stress, deformation and stability for the intake tower of a water release integrated structure under the normal storage water level and operational basis earthquake load case are investigated using the three dimensional finite element method. The response spectrum analysis is adopted to study the seismic response of the intake tower. Special attention is paid to the weak zones of the structure and foundation. The safety evaluation of the intake tower is performed based on the computational results.

scholarly journals Seismic Effect on Multi Storey Building with Different Positioning Of Floating Column

2019 ◽  
Vol 8 (11) ◽  
pp. 2807-2811
Keyword(s):  
Earthquake Engineering ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Seismic Effect ◽  
Masonry Buildings ◽  
Seismic Excitations ◽  
Utility Value ◽  
Response Spectrum Analysis ◽  
The World ◽  
Storey Building

Modern multi storied buildings are being constructed with floating column at the ground floor to meet the requirements of parking or other aesthetic or utility value. Masonry buildings have proved to be most vulnerable when earthquakes strike in any part of the world. The damage caused by the earthquake cannot be eliminated but it could be mitigated by taking extra precaution. Floating columns can be constructed at any level or storey, at any point in the construction area. Seismic analysis is a major tool in earthquake engineering; this is used to understand the response of buildings due to seismic excitations in a simpler manner. Response Spectrum Analysis was used. Assumptions were made to study the seismic effect on different position of floating column for a six storied RC framed building.

scholarly journals Response Spectrum Analysis of Multi Storied Building on Sloping Ground with Ground, Middle and Top Soft Storey

2021 ◽  
Author(s):  
Shankar H. Sanni ◽  
Ratnakala S. Bidreddy
Keyword(s):  
Spectrum Analysis ◽  
Response Spectrum ◽  
Shear Wall ◽  
Response Spectrum Analysis ◽  
Sloping Ground ◽  
Soft Storey ◽  
Time Period ◽  
G 12 ◽  
Flat Ground ◽  
Storey Building

In the concrete era of construction activities, there is scarcity of land especially in metro cities. Even though if there is availability of land it may in the sloping ground, hillocks or on land filled areas, in such areas there will be difficulty in the construction and design aspects. To maintain the slope of the strata, different degrees of such buildings step back towards the slanting slope and may likewise also have set back simultaneously. Hence in the present paper, an attempt has been made to study, G+12 storey building assumed to be in flat ground and also on sloping ground with 20 degree inclination. The model considered to be a soft storey with infill walls and two different shear wall arrangements. The building has been modelled in ETABS software with response spectrum method of analysis. The study reveals that model with shear wall improves the performance of the structure in terms of displacement, drift and time period apart from the fact that the structure being constructed in normal ground or sloping ground.

Seismic Analysis of Concrete Conical Foundation for 5 MWWind Turbine

2013 ◽  
Vol 831 ◽  
pp. 133-136 ◽  
Author(s):  
Woo Seok Kim ◽  
Chan Jeoung ◽  
Kang Min Lee ◽  
Jae Ha Lee
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Spectrum Analysis ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Offshore Wind ◽  
Seismic Stability ◽  
Response Spectrum Analysis ◽  
Offshore Wind Turbines ◽  
Concrete Foundation

Recently offshore wind turbines have been constructed and planned in Korea. However, seismic stability was not extensively examined, although relatively small earthquakes frequently occur and the occurrence trend is increasing. This study intends to analyze the seismic stability of a wind turbine foundation based on KPMDC, KBDC, and DNV OS. The foundation considered has a conical concrete base under a steel shaft supporting the 5 MW wind turbine. This study performed 3D response spectrum analysis to consider turbine weight and self-weights. Analysis resultsbased on KPMDC indicatedthat very severetensile stresses in the concrete foundation near the neck bracket and pile-concrete foundation connection, which may require reinforcing.

Seismic Analysis of a High Rise Antique-Style Pagoda with Steel Reinforced Concrete Composite Structure

2016 ◽  
Vol 851 ◽  
pp. 733-738
Author(s):  
Zi Chun Zhou ◽  
Hong Gang Lei
Keyword(s):  
Finite Element ◽  
Seismic Analysis ◽  
Response Spectrum ◽  
Time History ◽  
Analysis Method ◽  
Response Spectrum Analysis ◽  
Steel Reinforced Concrete ◽  
High Rise ◽  
Finite Element Software ◽  
History Analysis

In this paper, we analyze the dynamic and seismic performance of a high rise antique-style pagoda by using the response spectrum analysis and the time history analysis method, which are implemented in finite element software. The result of our system can provide a reference to the structural designer to ensure the structure of such architecture meets the seismic fortification requirements.

scholarly journals Analysis & Designing of Multistorey Building with Steel Plate Shear Wall

2021 ◽  
Vol 9 (8) ◽  
pp. 2111-2122
Author(s):  
Md. Shahid Iqbal
Keyword(s):  
Spectrum Analysis ◽  
Steel Plate ◽  
Response Spectrum ◽  
Shear Wall ◽  
High Energy ◽  
Lateral Loads ◽  
Structural System ◽  
Response Spectrum Analysis ◽  
Steel Plate Shear Wall ◽  
High Rise

Abstract: Structural design and analysis produces the capability of resisting all the applied loads without failure during its intended life. Lateral loads mainly due to earthquake govern the design of high-rise buildings. The interior structural system or exterior structural system provides the resistance to lateral loads in the structure. The present paper describes the analysis and design of high-rise buildings with Steel Plate Shear Wall (SPSW) for (G+20) stories. The properties of Steel plate shear wall system include the stiffness for control of structural displacement, ductile failure mechanism and high-energy absorption. The design and analysis of the composite building with steel plate shear wall is carried out using software ETABS. The present study is to carry out the response spectrum analysis of a high-rise composite building by optimizing the thickness of steel plate shear wall and to compare the results of displacement, story drift, overturning moment and story shear. The models are analyzed by Response Spectrum analysis as per IS 1893:2002. All structural members are designed as per IS 456:2002 & IS 800:2007 considering all load combinations. Keywords: Seismic; Composite; Shear Wall; Earthquake; Reinforced concrete.

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