Numerical investigations on the seismic performance of a scaled-down RC frame structure pre- and post-strengthening with composite membrane

2021 ◽  
Author(s):  
Ionut Ovidiu Toma ◽  
Ioana-Sorina Entuc ◽  
Ozana-Adnana Petcu ◽  
Nicolae Taranu ◽  
Aliz-Eva Mathe ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Composite Membrane ◽  
Frame Structure ◽  
Rc Frame ◽  
Numerical Investigations ◽  
Rc Frame Structure

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.

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

Shear Failure Behavior of Y-Eccentrically Brace in RC Frame Structures under Earthquake Action

2013 ◽  
Vol 639-640 ◽  
pp. 866-869 ◽  
Author(s):  
Da Peng Wang ◽  
An Lin Yu
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Shear Failure ◽  
Dynamic Testing ◽  
Mainland China ◽  
Frame Structure ◽  
Failure Behavior ◽  
Rc Frame ◽  
Rc Frame Structure ◽  
Earthquake Action

In order to study the mechanical characteristics and the shear failure behavior under earthquake action, a single-storey single-span RC frame structure strengthened with Y-eccentrically brace were designed and manufactured to be 1/3 scale. The pseudo-dynamic testing method was carried out under El-Centro earthquake action with different peak acceleration adjusted by Code for Seismic Design of Buildings in mainland China. The testing result indicates that RC frame structure strengthened with Y-eccentrically steel brace presents perfect seismic performance under strong earthquake action, at one time, the seismic performance maybe affected by the length of outsourcing steel at the joint between energy dissipation element of eccentric steel brace and RC frame beam. The joint should be considerably designed to make sure that shear failure can firstly occur in energy dissipation element.

Analysis on the Effect of Filler Wall to the Dynamic Characteristics and Storey Displacement of RC Frame Structure

2011 ◽  
Vol 255-260 ◽  
pp. 644-648
Author(s):  
Yan Xia Ye ◽  
Hua Huang ◽  
Dong Wei Li
Keyword(s):  
Dynamic Characteristics ◽  
Seismic Waves ◽  
Great Influence ◽  
Reduction Factor ◽  
Frame Structure ◽  
Vibration Modes ◽  
Rc Frame ◽  
Soft Storey ◽  
Rc Frame Structure ◽  
Rc Frame Structures

Comparative analyses of twenty-eight finite element structures with filler walls were established to study dynamic characteristics of RC frame structures under seismic waves. The results of these analyses show that filler walls have little influence on vibration modes of the structure. But as a result of soft storey in the bottom of building caused by reduction of the filler walls, vibration modes have a great influence. As the stiffness of filler wall decrease, the stiffness of soft storey decrease shapely, vibration mode curve becomes much smoother. Considering the filler wall has influence on the vibration periods of framework, the reduction factor of 0.7 should be taken. The influence of filler wall to the value of lateral drift and storey displacement angle of frame can not be ignored. The main effect factors to the dynamic characteristics of framework are included quantity, location, material of the fill wall and the selection of seismic waves.

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.

Seismic Damage Analysis and the Study of Reinforcement Measures for RC Frame Structure Building in Civil Engineering

2012 ◽  
Vol 568 ◽  
pp. 85-88
Author(s):  
Ming Gao
Keyword(s):  
Structural Damage ◽  
Civil Engineering ◽  
Seismic Damage ◽  
Frame Structure ◽  
Bottom Plate ◽  
Rc Frame ◽  
Structure Building ◽  
Damage Degree ◽  
Rc Frame Structure ◽  
Reinforcement Measures

In 5·12 Wenchuan earthquake, most of the buildings were damaged at different degrees in Mianyang. To analysis seismic damage of RC frame structure building, and investigate its reinforcement situation，the results show that: For destruction of frame column or bottom frame structure column, enlarge section method is used mostly for reinforcement in civil engineering；To serious damage of affiliated structure such as filler wall and Parapet, most of them will be demolished and built again, and add constructional column; To the situation of concrete bottom plate with crack, paste carbon fiber sheet or bottom plant steel was used depending on the structural damage degree, and jet concrete for strengthening.

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