Numerical Simulation of a RC Frame Shaking Table Test Model Based on CANNY

2010 ◽  
Vol 163-167 ◽  
pp. 981-986
Author(s):  
Li He ◽  
Xian Guo Ye
Keyword(s):  
Numerical Simulation ◽  
Shaking Table Test ◽  
Simulation Analysis ◽  
Shaking Table ◽  
Test Model ◽  
Rc Frame ◽  
Reinforced Concrete Frame ◽  
Element Analysis ◽  
Concrete Frame ◽  
History Of

This paper presents the nonlinear dynamic simulation analysis of a shaking table test specimen, which was a twelve- story reinforced concrete frame and tested under base excitations representing four earthquake records of increasing intensity. Owing to the length constraint of the paper, three cases are used for the simulation. The numerical simulation of the test model is conducted utilizing the finite element analysis procedure CANNY, and the analysis results include the natural frequency, response history of the frame and the damage evolution. It is concluded from comparisons between experimental results and the numerical simulation ones that the latter matches well with the former, therefore the validity of the analytical method and model for simulation of RC frame shaking table test is proved.

Seismic performance of a controlled rocking reinforced concrete frame

2016 ◽  
Vol 20 (1) ◽  
pp. 4-17 ◽  
Author(s):  
Liang Lu ◽  
Xia Liu ◽  
Junjie Chen ◽  
Xilin Lu
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Shaking Table Test ◽  
Joint Stiffness ◽  
Shaking Table ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Metallic Dampers ◽  
Reversed Cyclic

A controlled rocking reinforced concrete frame is a new type of vibration control structure system that uses resilient rocking columns and joints. The effects of earthquakes on this type of structure are reduced by weakening the overall stiffness, whereas the lateral displacement is controlled by the energy-dissipation dampers introduced into the structure. Two tests were performed for research: the reversed cyclic loading test and shaking table test. Two single-span single-story controlled rocking reinforced concrete frames were designed for reversed cyclic loading tests. These tests (i.e. a column-base joint stiffness test, beam-column joint stiffness test, and frame stiffness test) were performed under different conditions. The mechanical analysis model of the rocking joints was derived from the test results. With the parameters obtained from the cyclic tests, a numerical simulation method that established the analytical model of the controlled rocking reinforced concrete frame using the program ABAQUS is proposed, and the dynamic time-history analysis results of the controlled rocking reinforced concrete frame and of the conventional approach are compared to investigate the vibration control effect and seismic performance of the controlled rocking reinforced concrete frame. In addition, the inter-story drift could be effectively controlled by adding metallic dampers, and the shaking table test models of the controlled rocking reinforced concrete frame with metallic dampers were designed and constructed. The comparison of the results of the numerical analysis and the shaking table test demonstrates that the model building of the controlled rocking reinforced concrete frame structure is efficient and that the controlled rocking reinforced concrete frame exhibits an excellent seismic performance.

Application of FBG Sensors in Shaking Table Test of Frame-Shear Wall Structure Model

2010 ◽  
Vol 163-167 ◽  
pp. 2653-2656
Author(s):  
Li Sun ◽  
Hai Xia Zhang ◽  
De Zhi Liang ◽  
Zhe Li
Keyword(s):  
Transmission Lines ◽  
Shaking Table Test ◽  
Shear Wall ◽  
Shaking Table ◽  
Wall Structure ◽  
Structure Model ◽  
Reinforced Concrete Frame ◽  
Wall Model ◽  
Concrete Frame ◽  
Fbg Sensors

In this paper, FBG sensors are used to monitor and analyze the response of reinforced concrete frame-shear wall model in shaking table test in order to study the placement of sensors and the protection of the transmission lines. Based on the experiment data, the destructive mode and dynamic characteristics in earthquake are obtained through (by) analyzing the dynamic response of the structures. The experiment results show that using FBG is effective in monitoring the structures.

Structural Damage Identification Based on Hilbert-Huang Transform and Verification via Shaking Table Model Test

2011 ◽  
Vol 255-260 ◽  
pp. 4237-4241 ◽  
Author(s):  
Jian Ping Han ◽  
Jiong Qian ◽  
Pei Juan Zheng
Keyword(s):  
Structural Damage ◽  
Shaking Table Test ◽  
Damage Identification ◽  
Shaking Table ◽  
Reinforced Concrete Frame ◽  
Hilbert Huang Transform ◽  
Concrete Frame ◽  
Marginal Spectrum ◽  
Table Model ◽  
Strength And Stiffness

Damage occurs in components and joints while the structure is affected by strong ground motions. Dynamic characteristics of the structure will change with the deterioration of strength and stiffness. Analyzing and processing the vibration signals is one of the mainstream ways for structural health monitoring and damage identification. In this paper, Hilbert-Huang transform is adopted to identify structural damage. Time-varying instantaneous frequency and instantaneous energy is used to identify the damage evolution of the structure. And relative amplitude of Hilbert marginal spectrum is used to identify the damage location of the structure. Finally, the acceleration records at gauge points from the shaking table test of a 12-storey reinforced concrete frame model are processed. Evolution and location of the model damage are identified. Identification results agree well with experimental observation. This indicates that the proposed approach is capable to identify damage of the structure.

Finite Element Analysis on Exterior Joint of Reinforced Concrete Frame Structure

2012 ◽  
Vol 166-169 ◽  
pp. 172-175
Author(s):  
Chun Ming Wei ◽  
De Long Shao ◽  
Hui Su ◽  
Qiang Zhao
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Ultimate Load ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Element Analysis ◽  
Concrete Frame ◽  
Construction Joint ◽  
Reinforced Concrete Frame Structure

To investigate the effect of the horizontal construction joint on seismic behavior of the exterior joint of the reinforced concrete frame structure, the numerical simulation of the exterior joint with the construction joint under the low cyclic loading was done. The experimental results and the numerical simulation values were compared. Seen from the ultimate load, the experiment value is 158.7kN, the simulation value is 170kN, the relative error is about 11%.Further analysis of the exterior joint of reinforced concrete frame skeleton properties, the feasibility of applying unit construction joints is verified.

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