小比例柱面网壳振动台试验及动力响应概率模型

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摘要针对单层网壳实验费用高、周期长及地震变异性大等问题，开展了一小比例单层柱网壳振动台试验模型试验，并基于该模型试验统计了考虑地震动变异性时单层柱面网壳的动力响应概率模型。首先，参考孔洞胶接节点装配式单层球面网壳模型制作方法制作了一小比例单层柱面网壳模型；在此基础上，分别选用TAFT波、人工地震波和简谐波对该单层柱面网壳模型开展一系列振动台试验研究，包括弹性阶段的动力特性测试和弹塑性状态下的动力倒塌测试；其次，立足于现场实测数据，基于通用有限元分析软件ABAQUS建模、并开展相应数值仿真分析，总结分析单层柱面网壳模型动力特性与破坏特征；最后，基于40组动力实测数据研究地震变异性对单层柱面网壳动力特性的影响，并初步拟合出地震动变异性与该结构动力响应的概率模型。该研究对开展系列单层网壳振动台试验定性研究及空间网壳结构抗震规范的修订提供参考。

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	张明1
	2
	谢昌霖3
	4
	支旭东3
	4

关键词 ：单层柱面网壳, 地震作用, 振动台试验, 数值仿真分析, 概率模型

Abstract：In this paper a small single-layer latticed cylindrical shell model was fabricated for shaking table test in order to reduce the cost of the whole experiment process, and the dynamic response probability model considering the variability of ground motion was studied based on the shaking table test. Firstly, a small single-layer latticed cylindrical shell model was fabricated referring the existing method for fabricating the single-layer reticulated dome. Afterwards, a series of shaking table tests on the shell model, including dynamic response tests in the elastic phase and dynamic collapse test in the elastic-plastic phase, were conducted under the action of TAFT wave, artificial seismic wave and simple harmonic wave. Then, the dynamic response characteristics and collapse mode of the shell model were analyzed combining the field test data and the numerical simulation analysis results using the finite-element package ABAQUS. Finally, the effect of ground motion variability on the dynamic response of the shell model was studied based on the field test data of 40 tests followed by the preliminary fitting curve of the dynamic response probability and the variability of ground motion. This paper could provide an important reference for conducting a series of shaking table tests of the shell models and improving seismic design theories of spatial grid structures.

Key words： single-layer latticed cylindrical shell ground motion shaking table test numerical simulation analysis dynamic response probability model

收稿日期: 2019-01-23 出版日期: 2020-07-28

引用本文:

张明1,2，谢昌霖3,4，支旭东3,4. 小比例柱面网壳振动台试验及动力响应概率模型[J]. 振动与冲击, 2020, 39(15): 8-17.
ZHANG Ming1,2， XIE Changlin3,4，ZHI Xudong3,4. Shaking table tests for a small-scale single-layer latticed cylindrical shell and its dynamic response probability model. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(15): 8-17.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I15/8

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