Long-Period Response Spectrum and Earthquake Response Analysis of Super High-Rise Building

2010 ◽  
Vol 163-167 ◽  
pp. 3964-3971
Author(s):  
Zhen Xuan Zhang ◽  
Qing Jun Chen
Keyword(s):  
Seismic Response ◽  
Response Spectrum ◽  
Least Square ◽  
Response Analysis ◽  
Site Classification ◽  
Analysis Software ◽  
High Rise ◽  
Long Period ◽  
High Rise Building ◽  
Design Response Spectrum

Based on seismic records with large long-period components at home and abroad, carried on uniform error correction processing and rough site classification, then, used numerical analysis software-MATLAB to calculate the average response spectrum of different types of venues, and used the least square method to do sub-fitting for them, got the long-period quasi-regulatory response spectrums of all kinds of venues; using the general-purpose finite element analysis software-ANSYS, a super high-rise building structural analysis model was established, inputted the fitted long-period seismic response spectrum and the design response spectrum of Shanghai anti-seismic standards, by comparing the results of structural seismic responeses under the two kinds of response spectrum, the long-period seismic response of super high-rise building was investigated, and some valuable conclusions were obtained for reference.

Optimization Design of Core Thickness of Exterior Frame and Core Hybrid Structures in High-Rise Buildings

2012 ◽  
Vol 166-169 ◽  
pp. 14-18
Author(s):  
Shu Yun Zhang ◽  
Wen Wei Zhao ◽  
Hai Hua Wang
Keyword(s):  
Seismic Response ◽  
Optimization Design ◽  
Dynamic Properties ◽  
Response Spectrum ◽  
Optimization Method ◽  
Hybrid Structure ◽  
Hybrid Structures ◽  
Response Analysis ◽  
High Rise ◽  
Core Thickness

Considering core thickness is important issue to performance of exterior frame and core hybrid structure in high-rise buildings, seismic response analysis is conducted by response spectrum method for finite element models with different core thickness. The optimization design of core thickness of hybrid Structures on the basis of the seismic response is studied, the core thicknesses are chosen as design variables, the objective function about core volume is adopted, some specification requirements such as deformation, the ratio of lateral stiffness to gravity, storey shear to gravity, storey shear of exterior frame, axial compression ratio of column and wall limb, bearing capacity of structural member and core construction are regarded as restricting conditions, the optimal mathematical model is established for reflecting integrity dynamic properties of hybrid structure. The ANSYS software is used for optimizing tool, the hybrid structures optimization design are made through different initial values for verifying convergence of optimization method, the optimal result show that the performances of hybrid structure are improved, the internal forces are reduced and the ratios of inner force born by exterior frames are increased in the optimal scheme.

Effects of Site Classification on Platform Value of Response Spectrum

2011 ◽  
Vol 378-379 ◽  
pp. 306-309
Author(s):  
Ping Li ◽  
Jing Shan Bo ◽  
Xiao Yun Guo ◽  
You Wei Sun ◽  
Yu Dong Zhang
Keyword(s):  
Ground Motion ◽  
Seismic Design ◽  
Wave Motion ◽  
Response Spectrum ◽  
Equivalent Linearization ◽  
Earthquake Response ◽  
Response Analysis ◽  
Site Classification ◽  
Earthquake Motion ◽  
Design Response Spectrum

Regarding the design response spectrum in the code for seismic design of buildings as target spectra，the 28 acceleration histories are formed artificially．They are used as the inputs ground motion in earthquake response analysis．Four site classifications profiles were selected or constructed from practical site profiles．With the use of 1-D equivalent linearization wave motion method that is wildly used at present in site seismic response analysis, the platform values of surface response spectrum for different profiles under different ground motion inputs were calculated．Different platform values of the response spectrum and relational expression which is seven input earthquake motion intensity and site classifications have been given by statistical analysis.

scholarly journals An Investigation of Local Site Effects Using Linear and Nonlinear analysis and Comparison Between Them

2016 ◽  
Vol 2 (4) ◽  
pp. 113-122 ◽  
Author(s):  
Ali Komak Panah ◽  
Aylin Nouri
Keyword(s):  
Shear Wave ◽  
Wave Velocity ◽  
Earthquake Engineering ◽  
Shear Wave Velocity ◽  
Response Spectrum ◽  
Response Analysis ◽  
Site Classification ◽  
Ground Response Analysis ◽  
Soil Response ◽  
Design Response Spectrum

Recent code provisions for building and other structures (1994 and 1997 NEHRP provisions, 1997 UBC) have adopted new site classification. The new site classification system is based on average shear wave velocity to a depth of 30 m. when the shear wave velocity is not available; other soil properties such as undrained shear strength can be used. The study of propagation damages in various earthquakes illustrates the importance of the site effect on the ground seismic characteristics. From the point of the earthquake engineering view, the most important characteristics of the strong ground motion are amplitude, frequency content and duration. All of these properties have a significant effect on earthquake damage. The behavior of soils under cyclic loading is basically nonlinear and hysteretic. Ground response analysis is used to predict the movements of the ground and develop a design response spectrum in order to determine the dynamic stresses and strains and earthquake forces. The profile was studied by using various methods of soil response analysis and finally, the results were examined. In this paper, soil responses were examined by NERA, EERA software and the results compared with each other. Eventually, we concluded that the values obtained from the EERA are more than the value obtained from the NEERA software.

Elastic-Plastic Seismic Response Analysis of High-Rise Building with Transfer Storey

2013 ◽  
Vol 671-674 ◽  
pp. 1341-1345
Author(s):  
Jing Wei Nie ◽  
Hong Bing Liu ◽  
Zhao Fang
Keyword(s):  
Seismic Response ◽  
Time History ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Drift Angle ◽  
Elastic Plastic ◽  
High Rise ◽  
High Rise Building ◽  
Earthquake Record ◽  
Time History Response

The research on elastic-plastic dynamic response analysis of the high-rise building with transfer storey is carried out under different earthquake record inputs.The displacement time- history response of the top floor and the transfer storey, also the displacement envelope diagram and interlayer drift angle envelope diagram are obtained.Theoretical reference for the design of the weak layer is provided.

Seismic Response Analysis of Pile-Soil Interaction in Super High-Rise Building

2012 ◽  
Vol 204-208 ◽  
pp. 2569-2575
Author(s):  
Ya Nan Zhang ◽  
Xin Liang Jiang ◽  
Wei Yan
Keyword(s):  
Finite Element ◽  
Seismic Response ◽  
Slenderness Ratio ◽  
Interaction Model ◽  
Internal Force ◽  
Paper Analysis ◽  
Response Analysis ◽  
Peak Displacement ◽  
High Rise ◽  
High Rise Building

Based on the soil-structure interaction theory and finite element method, this paper analysis the seismic response of pile-soil interaction system in super high-rise building. This paper established a structure- pile-soil finite element mole of a super high-rise building in Tianjin area and analysis the dynamic response of superstructure and the internal force and displacement of the pile considering the influence of pile’s slenderness ratio. The results show that, the displacement and acceleration of the top of interaction model are increased compared with the fixed base model. Under seismic excitation, the peak displacement and the peak acceleration of pile top are larger than the pile bottom. As the pile’s slenderness ratio is larger, the inter force and displacement seismic response of the pile is larger and the variation of peak is bigger along the pile.

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