Seismic Performance Analysis of Steel Frame with Wedge Devices Based on the Energy Dissipation

2014 ◽  
Vol 580-583 ◽  
pp. 1624-1628
Author(s):  
Jin Song Lei ◽  
Wen Xia Luo ◽  
Jia Long Jiang ◽  
Wen Zhang
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Simulation Analysis ◽  
Time History ◽  
Seismic Energy ◽  
Steel Frame ◽  
Finite Element Software ◽  
History Analysis ◽  
Load Simulation ◽  
Column Bases

The steel frame with wedge devices is a kind of shock structure based on the node energy consumption. The seismic performances of steel frame with wedge and ordinary steel frame model under low cycle reciprocating load simulation analysis and time history analysis under earthquake loads are analyzed by using finite element software, compared the respective energy dissipation performance and seismic performance, the results show that the wedge spring damping device can effectively control story drifts of structure, reduce the seismic response of structure, and well consume the seismic energy, so the structure of the new column bases with wedge spring devices show better seismic performance.

The Damping Energy Dissipation Study on Buckling Restrained Brace in Multilayer Steel Frame

2010 ◽  
Vol 160-162 ◽  
pp. 910-914
Author(s):  
Yun Peng Chu ◽  
Yong Yao ◽  
Bin Xu ◽  
Yong Jun Deng ◽  
Shu Lian Xiao
Keyword(s):  
Energy Dissipation ◽  
Linear Time ◽  
Time History ◽  
Steel Frame ◽  
Structure Stability ◽  
Finite Element Software ◽  
Buckling Restrained Brace ◽  
History Analysis ◽  
Multilayer Steel ◽  
Brace Frames

The buckling-restrained brace has stable energy dissipation capability. It has been widely used in recent years. This paper uses finite element software ANSYS to do non-linear time history analysis for Center Braced Steel Frame, Eccentrically Braced Steel Frame, Buckling-restrained Braced Steel Frame under the earthquake. The results show that: (1) The peak acceleration, residual displacement and top floor displacement of buckling-restrained braced steel frame is smaller than the other two brace frames, provide support for the structure stability. (2) The damping energy and bracing energy dissipation capability of buckling-restrained braces and eccentrically braced are strong, so it can avoid the collapse of the main structure under the large or medium earthquake.

The Passive Energy-Dissipation Study of Braced Steel Frame Structure

2010 ◽  
Vol 163-167 ◽  
pp. 318-322
Author(s):  
Wen Xia Luo ◽  
Jin Song Lei ◽  
Ying Hu
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Time History ◽  
Steel Frame ◽  
Frame Structure ◽  
Seismic Load ◽  
Control Force ◽  
Finite Element Software ◽  
Passive Energy Dissipation ◽  
Steel Frame Structure

The seismic performance of braced steel frame was simulated by the finite element software ANSYS based on the passive energy-dissipation under the low-cycle repeated load and the time-history analysis under seismic load for the energy-dissipation braced steel frame structure, no-brace steel frame structure, and conventional braced frame structure. The energy dissipation and seismic performance of three kinds of frame were compared, the results show that the energy-dissipation braced structure can produce strong energy-dissipation control force to enhance energy dissipation capacity of the whole structure significantly, and weaken the seismic load of the main frame. It follows that the energy-dissipation braced steel frame can achieve the purpose of energy dissipation for structure, and has good seismic performance.

Elastic-Plastic Time History Analysis of Self-Anchored Cable-Stayed Suspension Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 4295-4300
Author(s):  
Feng Miao ◽  
Lei Shi ◽  
Zhe Zhang
Keyword(s):  
Plastic Hinge ◽  
Time History ◽  
Seismic Energy ◽  
Suspension Bridge ◽  
Time History Analysis ◽  
Main Beam ◽  
Elastic Plastic ◽  
Finite Element Software ◽  
Axial Forces ◽  
History Analysis

Base on the elastic-plastic analytical theory, an elastic-plastic time-history analysis of self-anchored cable-stayed suspension bridge, which engineering background is Dalian Gulf Cross-sea Bridge program, is performed by using general finite element software Midas/Civil. The material nonlinearity of structure is considered with reinforcement concrete fiber model, and distributed hinge type is adopted to simulate for plastic hinge. Compared with the results of an elastic time-history analysis, it is shown that for the structure into the elastic-plastic stage, because of the production of plastic hinge, the input seismic energy is dissipated partially, and the internal forces of structural elements are reduced. The bending moments and axial forces occur mainly in the main tower root. Furthermore, the rotation properties of the plastic hinge causes displacement increasing of certain parts of the structure, which assumes mainly the vertical displacement present on the top of main tower and the main beam. In conclusion, it is proposed that caging devices are set in the design.

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.

Seismic Performance Analysis of a Hollow Tower Structure with Three Prismatic Section

2012 ◽  
Vol 549 ◽  
pp. 879-883
Author(s):  
Lu Ping Yi ◽  
Jing Ji
Keyword(s):  
Finite Element ◽  
Seismic Performance ◽  
Seismic Waves ◽  
Lateral Displacement ◽  
Time History ◽  
Element Model ◽  
Finite Element Software ◽  
History Analysis ◽  
Tower Structure ◽  
Earthquake Action

In order to better understand seismic performance of tower body structure in a square, the symbol tower finite element model is established using the finite element software ANSYS. Modal analysis is carried out and the first 3 natural frequencies and vibration modes of marking tower are obtained. By selecting 2 group natural seismic waves and a synthetic seismic wave the seismic time-history analysis of the model is performed, the symbol tower response under the earthquake action is obtained and the maximum lateral displacement and the maximum stress of symbol tower meet the standard requirements, so mark tower under earthquake are safe. These can provide reference for the same type of engineering design.

Influence Factors and Repair Effects of Seismic Damage to a Box Section Steel Pier

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940001
Author(s):  
Zhongqiu Fu ◽  
Dongyang Wu ◽  
Liang Fang ◽  
Donghua Chen ◽  
Bohai Ji
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Nonlinear Dynamic ◽  
Time History ◽  
Time History Analysis ◽  
Steel Plates ◽  
Box Section ◽  
History Analysis ◽  
Dynamic Time

The seismic performance of a steel pier of box section was studied through low-cycle cyclic testing. The damaged specimens were repaired by filling with concrete and welding steel plates. The low-cycle cyclic test was then repeated. The effects of repairs were investigated by comparison of failure mode, energy dissipation performance, and ductility before and after repair. To supplement the data, the influence of different factors on the seismic bearing capacity and ductility of steel piers were analyzed by finite element method. The repair effects were compared by threshold of the displacement from the experiment. Based on the displacement angle response of the nonlinear dynamic time history analysis, the seismic performance is checked. The results show that repair had favourable effects on the damaged specimens. The horizontal bearing capacity and ductility of the specimens filled with concrete are significantly enhanced. Reinforcement by steel plates can increase the ductility and cumulative energy dissipation of the steel pier. An axial compression ratio of 0.2 and a concrete filling ratio of 30% are suggested. The horizontal bearing capacity can be improved by increasing the steel strength while the concrete strength shows little effect. The angular displacement from nonlinear dynamic time-history analysis was less than the test threshold, so the existing methods used for seismic performance verification are safe.

Study on Seismic Performance of Unsymmetrical K-Type Friction Energy Dissipation Brace

2013 ◽  
Vol 353-356 ◽  
pp. 1879-1882
Author(s):  
Yi Xiang Xu ◽  
Wen Pan ◽  
Sheng Lan Zhu
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Time History ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Finite Element Software ◽  
Friction Energy ◽  
To Come ◽  
Rare Earthquake

The multi-storey reinforced concrete frame structure whose frame has been added with a kind of unsymmetrical K-type friction energy dissipation brace is taken as an example in this article. The time history analysis of different angles of unsymmetrical K-type friction energy dissipation brace and symmetrical K-type friction energy dissipation brace under the rare earthquake has been done by using the finite element software SAP2000. The analysis and comparison on the seismic performance shows that symmetrical K-type friction energy dissipation brace under certain conditions. Plan layout could be more flexible by using the result obtained which could become a reference for design in days to come.

Nonlinear Dynamic Analysis of the Damping Frame Structure System

2012 ◽  
Vol 594-597 ◽  
pp. 886-890 ◽  
Author(s):  
Gan Hong ◽  
Mei Li ◽  
Yi Zhen Yang
Keyword(s):  
Energy Dissipation ◽  
Seismic Response ◽  
Nonlinear Dynamic ◽  
Time History ◽  
Time History Analysis ◽  
Frame Structure ◽  
Force Model ◽  
Operating Characteristics ◽  
Restoring Force ◽  
History Analysis

Abstract. In the paper, take full account of energy dissipation operating characteristics. Interlayer shear-frame structure for the analysis of the Wilson-Θmethod ELASTOPLASTIC schedule, the design of a nonlinear dynamic time history analysis procedure. On this basis, taking into account the restoring force characteristics of the energy dissipation system, the inflection point in the restoring force model treatment, to avoid a result of the calculation results of distortion due to the iterative error. A frame structure seismic response time history analysis results show that: the framework of the energy dissipation significantly lower than the seismic response of the common framework, and its role in the earthquake when more significant.

scholarly journals Evaluation of p-delta effect in structural seismic response

2018 ◽  
Vol 162 ◽  
pp. 04019 ◽  
Author(s):  
Sardasht Sardar ◽  
Ako Hama
Keyword(s):  
Seismic Response ◽  
Pushover Analysis ◽  
Nonlinear Dynamic Analysis ◽  
Time History ◽  
Steel Structure ◽  
Nonlinear Static Analysis ◽  
Structural Behavior ◽  
Finite Element Software ◽  
History Analysis ◽  
Nonlinear Static

Numerous recent studies have assessed the effect of P-Delta on the structures. This paper investigates the effect of P-Delta in seismic response of structures with different heights. For indicating the effect of P-Delta, nonlinear static analysis (pushover analysis) and nonlinear dynamic analysis (Time history analysis) were conducted by using finite element software. The results showing that the P-Delta has a significant impact on the structural behavior mainly on the peak amplitude of building when the height of the structures increased. In addition, comparison has been made between concrete and steel structure.

A Study on the Restrainer for Isolated Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 5208-5213
Author(s):  
Yong Feng Du ◽  
Xiao Yu Sun
Keyword(s):  
Lateral Displacement ◽  
Time History ◽  
Nonlinear Characteristics ◽  
Isolation System ◽  
Finite Element Software ◽  
Continuous Beam Bridge ◽  
History Analysis ◽  
Isolated Bridge ◽  
Isolated Bridges ◽  
Beam Bridge

As a result of adopting isolated bearings, it is inevitable to increase the lateral displacement of the superstructure and the chance of girder falling. However, the shear keys that just satisfies the structural design is far from meeting the requirements of displacement of isolated bridge restrictions. On account of this, given the nonlinear characteristics of bearings and the restrainer, the authors make the study on the "damping rubber with coupling collar" restrainer, and then establish isolation system model of continuous beam bridge with finite element software named Midas. Meanwhile, the effect of the restrainer on the dynamic response of isolated bridges is presented by time-history analysis, which reveals the great value in the application of limiting displacement of isolated bridge.

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