[1]鲁亮,陈凯芳,黄子恒.基于静力试验的体外预应力自复位框架地震响应数值模拟[J].地震工程与工程振动,2019,39(01):138-145.[doi:10.13197/j.eeev.2019.01.138.lul.016]
 LU Liang,CHEN Kaifang,HUANG Ziheng.Simulation on the earthquake response of external prestressed self-centering frame based on static test[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(01):138-145.[doi:10.13197/j.eeev.2019.01.138.lul.016]
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基于静力试验的体外预应力自复位框架地震响应数值模拟
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年01
页码:
138-145
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
Simulation on the earthquake response of external prestressed self-centering frame based on static test
作者:
鲁亮1 陈凯芳1 黄子恒2
1. 同济大学 结构防灾减灾工程系, 上海 200092;
2. 上海蓝光和骏置业有限公司, 上海 200120
Author(s):
LU Liang1 CHEN Kaifang1 HUANG Ziheng2
1. Department of Disaster Mitigation for Structures, Tongji University, Shanghai 200092, China;
2. Shanghai Blueray Hejun Industrial Co., Ltd., Shanghai 200120, China
关键词:
自复位静力试验抗震结构抗侧刚度数值模拟
Keywords:
self-centeringstatic testseismic structurelateral stiffnessnumerical simulation
分类号:
TU352.1
DOI:
10.13197/j.eeev.2019.01.138.lul.016
摘要:
一般在进行振动台模型试验时,由于试验引起结构构件损伤,很难在试验前或试验后实测构件或节点的力学参数,但是对于整体弹性模型或部分弹性模型,可以事后对其力学性能进行实测,将实测数据用于修正计算模型,经过修正的计算结果与振动台试验结果有更好对比性。体外预应力自复位框架(EPSCF)是一种新型抗震结构,将预应力筋设置在梁柱构件体外,达到易施工、易监测、可更换的目的。在振动台试验中,EPSCF主体结构保持弹性,耗能装置损坏。振动台试验后,进行EPSCF主体结构低周反复静力试验,实测结构在侧向力作用下的滞回曲线与骨架曲线,并计算出结构每层的抗侧刚度及等效阻尼比。将实测参数代入有限元模型中进行地震响应数值模拟,并与振动台试验结果进行对比。研究结果表明,经过静力试验校准的计算模型能更好地模拟振动台试验结果。
Abstract:
Generally, it is difficult for most models to get the mechanical parameters of components and joints before or after the shaking table test due to the damage during the test, but it is feasible for an elastic or partially elastic model. Measured mechanical parameters can be used to modify the analytical modelling, and get more comparable results with the shaking table test. External Prestressed Self-centering Frame (EPSCF) is a new type of seismic structure with the post-tensioned prestressing tendons installed outside the beams and columns, and this configuration is beneficial to achieve the purpose of easier operation, easier maintenance and easier replacement. The main body of EPSCF kept elastic and the energy-dissipating devices damaged during the shaking table test. Reversed-cyclic static test was carried out on the EPSCF model without damper after shaking table test, the hysteresis curves and skeleton curves of different layers were obtained, lateral stiffness and equivalent damping ratio of each layer were calculated. The measured mechanical parameters are imported to the finite element model to simulate the earthquake responses and calculated results are compared with the shake table test results. This research shows that calculation calibrated by static test can simulate the results of shaking table test more accurately.

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备注/Memo

备注/Memo:
收稿日期:2018-05-31;改回日期:2018-08-07。
基金项目:国家重点研发计划项目(2016YFC0701101);国家自然科学基金项目(51678453);中央高校基本科研业务费专项(22120180305)
作者简介:鲁亮(1969-),男,副教授,博士,主要从事工程结构抗震研究.E-mail:95010@tongji.edu.cn
更新日期/Last Update: 1900-01-01