用于多点振动台试验的节段式模型箱设计及其数值分析

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摘要为进行非一致地震动输入下的地下结构多点振动台试验，设计了适用于多点振动台试验的由两个主动箱和一个从动箱组成的节段式刚性模型箱，主、从动箱之间设置由若干弹簧组成的连接接头，并通过数值模拟分别对不同弹簧刚度条件下的模型箱空箱及自由场在正弦行波荷载作用下的加速度响应进行分析。结果表明，连接接头处弹簧刚度对从动箱箱底加速度时程峰值和时滞存在明显影响，且通过调节弹簧刚度，可以使从动箱加速度响应峰值、主频、时滞等基本满足目标要求，验证了该模型箱设计方案的可行性。

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	王国波1
	郝朋飞2
	3
	袁明智2
	谢伟平2

关键词 ：多点振动台试验, 非一致输入, 行波效应, 节段式模型箱

Abstract：In order to conduct multi-point shaking table tests of underground structure under non-uniform ground motion input, a segmental rigid model box consisting of two active boxes and one driven box was designed. A connecting joint composed of several springs was arranged between active and driven boxes. Acceleration responses of the empty model box and the free field under sinusoidal traveling wave load and different spring stiffness conditions were analyzed, respectively using numerical simulation. Results showed that the spring stiffness of the joint has a significant influence on the acceleration time-history peak value and time-delay at the driven box bottom; adjusting spring stiffness can make the driven box acceleration response peak value, main frequency and time-delay basically meet the target requirements, and verify the feasibility of this model box design scheme.

Key words： multi-point shaking table test non-uniform input traveling wave effect segmental model box

收稿日期: 2019-02-18 出版日期: 2020-09-28

引用本文:

王国波1，郝朋飞2，3，袁明智2，谢伟平2. 用于多点振动台试验的节段式模型箱设计及其数值分析[J]. 振动与冲击, 2020, 39(19): 156-162.
WANG Guobo1， HAO Pengfei2，3, YUAN Mingzhi2， XIE Weiping2. Design of segmental model box for multi-point shaking table tests and its numerical analysis. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(19): 156-162.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I19/156

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