scholarly journals Seismic Performance of a Corroded Reinforce Concrete Frame Structure Using Pushover Method

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Meng Zhang ◽  
Ran Liu ◽  
Yaoliang Li ◽  
Guifeng Zhao
Keyword(s):  
Seismic Performance ◽  
Pushover Analysis ◽  
Element Model ◽  
Reinforce Concrete ◽  
Frame Structure ◽  
Rc Frame ◽  
Concrete Frame ◽  
Rc Frame Structure ◽  
Negative Effect ◽  
Rare Earthquake

SAP2000 software was used to build the finite element model of a six-storey-three-span reinforced concrete (RC) frame structure. The numerical simulation of the seismic performance of the RC frame structure incorporating different levels of rebar corrosion was conducted using pushover analysis method. The degradation characteristics of the seismic performance of the corroded structure under severe earthquake were also analyzed. The results show that the seismic performance of the RC frame decreased significantly due to corrosion of the longitudinal rebars. And the interstory drift ratios increase dramatically with the increasing of the corrosion rate. At the same time, the formation and development of plastic hinges (beam hinges or column hinges) will accelerate, which leads to a more aggravated deformation of the structure under rare earthquake action, resulting in a negative effect to the seismic bearing capacity of the structure.

Research on the Collapse Performance of RC Frame Structure

2014 ◽  
Vol 556-562 ◽  
pp. 712-715
Author(s):  
Jing Zhao ◽  
Jing Zhao ◽  
Xing Wang Liu
Keyword(s):  
Reinforced Concrete ◽  
Frame Structure ◽  
Rc Frame ◽  
Hydraulic Actuator ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Load Paths ◽  
Rc Frame Structure ◽  
Gravity Load ◽  
Middle Column

In collapse-resistant design of a structure under accidental local action, it is important to understand the failure mechanism and alternative load paths. In this paper, a pseudo-static experimental method is proposed. Based on which, the collapse of frame structure was simulated with testing a 1/3 scale; 4-bay and 3-story plane reinforced concrete frame. In the experience, the middle column of the bottom floor was replaced by mechanical jacks to simulate its failure, and the simulated superstructure’s gravity load acted on the column of the top floor by adopting a servo-hydraulic actuator with force –controlled mode.

Research on seismic stability of reinforced concrete frame structure based on numerical simulation

2021 ◽  
pp. 1-11
Author(s):  
Jinchao Liu
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Element Model ◽  
Maximum Error ◽  
Frame Structure ◽  
Seismic Stability ◽  
Rc Frame ◽  
Reinforced Concrete Frame ◽  
Skeleton Curve ◽  
Rc Frame Structure

BACKGROUND: The analysis of seismic stability of structure is important in the field of engineering. OBJECTIVE: This study aims to verify the reliability of numerical simulation in seismic stability of reinforced concrete (RC) frame structure. METHODS: Based on the numerical simulation, the material constitutive model of RC frame structure was introduced and then a finite element model was established through ABAQUS to analyze its seismic stability. RESULTS: The simulation results of ABAQUS were similar to the test values, the tangent slope of the skeleton curve of the structure decreased gradually, the interstorey displacement of storey 1 was the largest, the maximum error of the interstorey displacement angle was 0.005, and the ductility coefficient was 4. CONCLUSIONS: The experimental results verify the reliability of the numerical simulation method and provide some theoretical support for its better application in the study of seismic stability.

Mechanism of Frictional Mortar-Less Panel and its Application in Reinforcement Concrete Frame

2014 ◽  
Vol 894 ◽  
pp. 82-86
Author(s):  
Xiao Hong Zhou
Keyword(s):  
Finite Element ◽  
Seismic Behavior ◽  
Horizontal Displacement ◽  
Frame Structure ◽  
Rc Frame ◽  
Base Shear ◽  
Concrete Frame ◽  
Rc Frame Structure ◽  
Story Drift ◽  
Considerable Benefit

In order to improve the seismic behavior of the reinforcement concrete frame, a frictional mortar-less panel (FMP) was researched. In this masonry, the bricks are built without mortar and the lateral capability is supported by the friction between bricks. FMP has less rigid in-plane contribution, and contribute mostly to the energy dissipation of structure. To investigate the seismic behavior of FMP, a simple finite element modeling method has been proposed and verified with ANSYS. After that, the FMP was infilled in a typical reinforcement concrete frame structure and a Taft wave has been applied to research on its seismic behavior. The horizontal displacement, story drift, acceleration and base shear/axial force of RC frame has been achieved, results showed the FMP has considerable benefit to the seismic behavior of RC frame structure and worth to be promoted.

scholarly journals Multifactor Influence Analysis of Seismic Performance of RC Frame Structure with Cast-in-site Slabs

2017 ◽  
Vol 210 ◽  
pp. 360-368
Author(s):  
Wang-Xi Zhang ◽  
Bao Chen ◽  
Long-Jie Xiao ◽  
Jia-Jia Shi ◽  
Yong-Tao Wei
Keyword(s):  
Seismic Performance ◽  
Frame Structure ◽  
Rc Frame ◽  
Influence Analysis ◽  
Rc Frame Structure

The Seismic Performance Evaluation of PHC Pile Wharf Based on Pushover Analysis

2014 ◽  
Vol 638-640 ◽  
pp. 1900-1904 ◽  
Author(s):  
Gui Lan Tao ◽  
Da Fei ◽  
Liang Shu
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Response Spectrum ◽  
Pushover Analysis ◽  
Element Model ◽  
Seismic Capacity ◽  
Object A ◽  
Seismic Performance Evaluation ◽  
Parameter Conversion ◽  
Rare Earthquake

A single bent structure of PHC pile wharf was taken as the research object. A finite element model was established and studied by pushover analysis along the transverse direction by SAP2000. The parameter conversion relationship between response spectrum of ATC-40 and of Chinese codes was studied. Seismic performance evaluation of the wharf structure is conducted. The conclusion is that the single pile yield order of the PHC pile wharf is from the bottom to the top. The wharf structure meets the seismic capacity requirements on condition of frequent earthquake of 7 degree, but needs appropriate reinforcement on condition of rare earthquake of 7 degree.

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