Shear-type Substructure Shaking Table Testing Method with High Stability

doi:10.11908/j.issn.0253-374x.2017.11.004

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Shear-type Substructure Shaking Table Testing Method with High Stability
DOI:
                        10.11908/j.issn.0253-374x.2017.11.004
                    
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Author:
                        FU BoFU Bo
College of Civil Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
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JIANG HuanjunJIANG Huanjun
College of Civil Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
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Clc Number:TU317
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Abstract:

A substructure shaking table testing (SSTT) method using a modified ChenRicles (CR) integration algorithm for the multistory sheartype structure was proposed. The velocity and displacement formulations of the CR algorithm were retained in the modified algorithm, while a stability adjustment factor was introduced to calculate the integration parameters. In addition, dynamic condensation technique was used to take the contribution of the experimental substructure into consideration. Finally, stability analyses of the proposed substructure method were conducted using the discrete control theory. The variables include the structural parameters, time step, stability adjustment factor, whether or not using dynamic condensation, and interest frequency of dynamic condensation. It can be drawn from the stability analysis results of a 2story sheartype structure that the proposed method is able to efficiently improve the stability compared to the SSTT method using the CR algorithm.

Key words:shaking table testing; substructure; stability; discrete control theory; dynamic condensation

Reference

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FU Bo, JIANG Huanjun. Shear-type Substructure Shaking Table Testing Method with High Stability[J].同济大学学报(自然科学版),2017,45(11):1602~1610

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Received:January 17,2017
Revised:October 13,2017
Adopted:October 09,2017
Online: December 08,2017
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