EVALUATION OF SEISMIC PERFORMANCE OF EXTERIOR CLADDING IN FULL-SCALE 4-STORY BUILDING SHAKING TABLE TEST

Real-time hybrid method is an economical and efficient test method to evaluate the dynamic behavior. The purpose of this study is to develop the computational algorithm and to prove the reliability of a real-time hybrid control system. For performing the multi-direction dynamic test, three dynamic actuators and the optimized real-time hybrid system with new hybrid simulation program (FEAPH) and a simplified inter-communication were optimized. To verify the reliability and applicability of the real-time hybrid control system, 3-DOF (3 Degrees of Freedom) non-linear dynamic tests with physical model were conducted on a steel and concrete frame structure. As a ground acceleration, El Centro and Northridge earthquake waves were applied. As a result, the maximum error of numerical analysis is 13% compared with the result of shaking table test. However, the result of real-time hybrid test shows good agreement with the shaking table test. The real-time hybrid test using FEAPH can make good progress on the total testing time and errors. Therefore, this test method using FEAPH can be effectively and cheaply used to evaluate the dynamic performance of the full-scale structure, instead of shaking table and full-scale test.

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Research on Bending Rigidity at Flange Connections of UHV Composite Electrical Equipment

Shock and Vibration ◽

10.1155/2020/2031357 ◽

2020 ◽

Vol 2020 ◽

pp. 1-10

Author(s):

Haibo Wang ◽

Yongfeng Cheng ◽

Zhicheng Lu ◽

Zhubing Zhu ◽

Shujun Zhang

Keyword(s):

Numerical Simulation ◽

Seismic Performance ◽

Shaking Table Test ◽

Effective Means ◽

Electrical Equipment ◽

Shaking Table ◽

Calculation Formula ◽

Test Results ◽

Bending Rigidity ◽

Earthquake Simulation

Pillar electrical equipment is an important part of substations. The application of composite materials in pillar equipment can facilitate the improvement of the seismic performance of electrical equipment. In this paper, the test of elastic modulus and bending rigidity was conducted for individual composite elements in insulators and arresters, and the calculation formula for bending rigidity at the composite flange cementing connections was put forward. The numerical simulation model for the earthquake simulation shaking table test of ±1,100 kV composite pillar insulators was established, in which the bending rigidity value for the flange cementing part was obtained by the test or calculation formula. The numerical simulation results were compared with the earthquake simulation shaking table test results, the dynamic characteristics and seismic response of the model were compared, respectively, the validity of the proposed calculation formula for flange bending rigidity of composite cementing parts was verified, and a convenient and effective means was provided for calculating the seismic performance of composite electrical equipment.

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Shaking Table Model Test and Seismic Performance Analysis of a High-Rise RC Shear Wall Structure

Shock and Vibration ◽

10.1155/2019/6189873 ◽

2019 ◽

Vol 2019 ◽

pp. 1-17 ◽

Cited By ~ 4

Author(s):

Shujin Li ◽

Cai Wu ◽

Fan Kong

Keyword(s):

Seismic Performance ◽

Model Test ◽

Shaking Table Test ◽

Technical Specification ◽

Shaking Table ◽

Scale Model ◽

Wall Structure ◽

High Rise ◽

Table Model ◽

Shaking Table Model Test

A building developed by Wuhan Shimao Group in Wuhan, China, is a high-rise residence with 56 stories near the Yangtze River. The building is a reinforced concrete structure, featuring with a nonregular T-type plane and a height 179.6 m, which is out of the restrictions specified by the China Technical Specification for Concrete Structures of Tall Building (JGJ3-2010). To investigate its seismic performance, a shaking table test with a 1/30 scale model is carried out in Structural Laboratory in Wuhan University of Technology. The dynamic characteristics and the responses of the model subject to different seismic intensities are investigated via the analyzing of shaking table test data and the observed cracking pattern of the scaled model. Finite element analysis of the shaking table model is also established, and the results are coincident well with the test. An autoregressive method is also presented to identify the damage of the structure after suffering from different waves, and the results coincide well with the test and numerical simulation. The shaking table model test, numerical analysis, and damage identification prove that this building is well designed and can be safely put into use. Suggestions and measures to improve the seismic performance of structures are also presented.

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