A Research of the Seismic Energy Dissipation Effect of BRB under Frequent Earthquake in High Seismic Intensity Areas

2013 ◽  
Vol 353-356 ◽  
pp. 1832-1835
Author(s):  
Zheng Jun Liao ◽  
Chao He Chen
Keyword(s):  
Energy Dissipation ◽  
Response Spectrum ◽  
Time History ◽  
Seismic Energy ◽  
Seismic Intensity ◽  
Response Spectrum Analysis ◽  
High Rise ◽  
Dissipation Effect ◽  
History Analysis ◽  
Set Up

The BRB has a good seismic energy dissipation effect and it has been proved and applied to many specific projects. In this research, the GH Hotel, a high-rise building in Haikou with the seismic fortification intensity of eight degrees (0.3 g) is selected as a carrier, from which two contrast models of the 40th story with and without BRB are set up respectively. By Superposition Response Spectrum Analysis and Elastic Time-history Analysis, this study explores the seismic energy dissipation effect of BRB under frequent earthquake in high seismic intensity areas and draws some conclusions.

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.

Stochastic Vibration-Based Fragility Analysis of Middle-Story RC Frames

2011 ◽  
Vol 204-210 ◽  
pp. 1235-1238
Author(s):  
Jian Zhu ◽  
Ping Tan
Keyword(s):  
Fragility Curves ◽  
Response Spectrum ◽  
Time History ◽  
Seismic Intensity ◽  
Western China ◽  
Fragility Analysis ◽  
Design Practice ◽  
Rc Frames ◽  
History Analysis ◽  
Set Up

A lot of reinforced concrete (RC) frames have being collapsed during Si Chuan Earthquake (SCE) in western China May 12th.2008, at the same time others have being injured on several levers. In recent years how to evaluate reliability and fragility of the buildings and search reasonable design practice of seismic strengthening of these buildings is urgent mission. One goal of fragility analysis is set up relation between vulnerability and seismic intensity. A set of stochastic earthquake waves compatible with the response spectrum of China seismic code selected to represent the variability in ground motion. Dynamic inelastic time history analysis was used to analyze the random sample of structures. In the end structural weak position also be pointed as valuable consultation for diagnose these buildings and fragility curves of typical middle-storey RC frames of China was obtained finally.

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.

Seismic Fragility Analysis of Mid-Story Isolation and Reduction Structures Based Two Directions

2013 ◽  
Vol 739 ◽  
pp. 309-313 ◽  
Author(s):  
Pei Ju Chang
Keyword(s):  
Fragility Curves ◽  
Response Spectrum ◽  
Time History ◽  
Longitudinal Axis ◽  
Seismic Intensity ◽  
Seismic Fragility ◽  
Infill Wall ◽  
Intensity Index ◽  
History Analysis ◽  
Masonry Infill Wall

This study focus on derivation of such fragility curves using classic mid-story isolation and reduction structures (MIRS) in China metropolis. This study focus on derivation of such fragility curves using conventional industrial frames with masonry infill wall. A set of stochastic earthquake waves compatible with the response spectrum of China seismic code selected to represent the variability in ground motion. Dynamic inelastic time history analysis was used to analyze the random sample of structures. MIRS seismic capability of longitudinal and transversal orientation is different. Stochastic damage scatter diagrams based different seismic intensity index are obtained. Seismic fragility of longitudinal axis (Y axis) is larger than transversal axis (X axis) of frames under major earthquake obviously.

Seven Mega Floor MSCSS Modal Analysis

2013 ◽  
Vol 353-356 ◽  
pp. 2210-2215
Author(s):  
Jun Jun Wang ◽  
Lu Lu Yi
Keyword(s):  
Modal Analysis ◽  
Response Spectrum ◽  
Time History ◽  
Response Analysis ◽  
Superposition Method ◽  
Response Spectrum Analysis ◽  
Mode Superposition Method ◽  
History Analysis ◽  
Basic Performance ◽  
Dynamic Time

Modal analysis is also known as dynamic analysis for mode-superposition method. In the seismic response analysis of linear structural systems, it is one of the most commonly used and the most effective ways. Through the modal analysis of building structure, we can get some basic performance parameters of the structure. These parameters can help us make qualitative judgments for the respond of a structure first, and can help us judge whether they meet demands for conceptual design. Modal analysis is also the basis of other dynamic response analysis, including dynamic time history analysis and response spectrum analysis.

Sensitivity of the Effective Seismic Support Damping in a Class I Piping System to Analysis Parameters

2009 ◽  
Author(s):  
Nima Zobeiry
Keyword(s):  
Seismic Analysis ◽  
Response Spectrum ◽  
Time History ◽  
Class I ◽  
Piping System ◽  
Frequency Content ◽  
Response Spectrum Analysis ◽  
History Analysis ◽  
The Coefficient Of Friction ◽  
Seismic Damping

It is understood that the level of seismic damping in a piping system is strongly influenced by the supports. Put differently, the supports contribute to an effective damping that can be considered in the seismic analysis of the piping system. This paper investigates the issue for the feeder pipes of a CANDU™ reactor. Feeders are numerous class I pipes in parallel, which are separated by frictional spacer elements. The results of a time history analysis, taking into account different damping mechanisms, are compared to those from a response spectrum analysis to deduce the effective damping in the system. The sensitivity of the effective damping to different parameters, such as the coefficient of friction and the input frequency content, is investigated.

scholarly journals Behavior of Piles with Raft Foundation using Safe Software

2019 ◽  
Vol 8 (11) ◽  
pp. 1432-1436
Keyword(s):  
Pile Foundation ◽  
Response Spectrum ◽  
Time History ◽  
Single Pile ◽  
Response Spectrum Analysis ◽  
Pile Diameter ◽  
Raft Foundation ◽  
History Analysis ◽  
Soil Settlement ◽  
Storey Building

Piles with raft foundation are a hybrid type of foundation in which the loads coming from the super structure is partly shared by the raft foundation and partly by the piles. A G+20 Storey building is analysed and designed in ETABS software. The modelling and analysis of piles with raft foundation is done in SAFE Software by importing the building loads. The storey drift and story displacement of the structure has been studied for the superstructure loads using response spectrum analysis and time history analysis in both X and Y axes. Then behavior of piles with Raft foundation is studied in this work by considering different parameters. The Pile diameter, Spacing of piles, Number of piles, and raft thickness are varied and keeping height of the pile as constant, the behavior of pile with raft foundation is determined. Pile with Raft foundation is economical when compared to a single pile foundation or Raft foundation. In the present work of piled with raft foundation, the load is shared between pile and raft. Hence Soil settlement is gradually reduced when the piles are introduced below the raft. Finally the optimum dimensions of pile diameter and thickness of the raft are obtained for minimum settlement.

Study on Seismic Behavior of Steel & Concrete Hybrid Structure

2011 ◽  
Vol 90-93 ◽  
pp. 1406-1411
Author(s):  
Qiang Song ◽  
Yong Zhang ◽  
Yong Xu
Keyword(s):  
Seismic Behavior ◽  
Response Spectrum ◽  
Time History ◽  
Hybrid Structure ◽  
Calculation Model ◽  
Response Spectrum Analysis ◽  
Core Tube ◽  
The Core ◽  
History Analysis ◽  
Simplified Calculation

Seismic behavior of the steel & concrete hybrid structure is studied by Sap2000, including modal analysis, response spectrum analysis and time-history analysis. Also, a simplified calculation model of the steel & concrete hybrid structure is established, and some formulae have been derived from this model, such as the natural frequency, top displacement, shear of both the core tube and the steel frame, on the basis of finite element method of bar system. Those formulae can be used to explain and approximately count the seismic response of steel & concrete hybrid structure.

Key Points Analysis for Seismic Design of Super High-Rise Building

2013 ◽  
Vol 423-426 ◽  
pp. 1230-1233
Author(s):  
Ting Yu Mei ◽  
Lang Wu
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Response Spectrum ◽  
Time History ◽  
Stage Design ◽  
High Rise ◽  
High Rise Building ◽  
History Analysis ◽  
Key Points ◽  
And Performance

In recent years, high-rise buildings have developed very rapidly in our country. Because of the particularity of the high-rise building, more strictly technical measures should be taken in seismic design to ensure security. Three level fortifications, two stage design method have been used for seismic design in our country. Combined with the practical, the key points of response spectrum, time history analysis and performance design which related to seismic design of high-rise buildings were analyzed.

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