振动台试验新型叠层剪切模型箱的设计与性能测试

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摘要振动台模型试验是开展地震作用下土-地下结构动力相互作用研究的重要手段，而模型箱的性质将直接影响到试验结果的准确性。基于结构动力学的基本原理，设计研制了设有可调节弹簧和阻尼装置的层状剪切模型箱，并对其有效性进行了试验验证；同时，基于ANSYS 软件对模型箱的动力性能开展了模拟分析。试验和分析结果表明，研制的设有可调节弹簧和阻尼装置的全仿真层状剪切模型箱具有良好的真实场地无限边界条件的模拟效果，可体现土-地下结构相互作用体系的动力反应是由速度和位移控制的特点；针对不同试验中所选择的模型土种类的不同，该模型箱可调整其自身性能，以满足试验对降低模型箱边界效应的要求。该模型箱的研制为今后其他岩土地震工程问题研究中试验箱的选择提供了新思路。

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	安军海1
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关键词 ：剪切模型箱, 振动台试验, 位移和速度, 边界效应, 土-地下结构动力相互作用

Abstract：Shaking table model test is an important means to study soil-underground structure dynamic interaction under earthquake.The property of soil filled model box directly affects the correctness of test results.Here, based on the basic principle of structural dynamics, a laminar shear model box with adjustable spring and damping was designed, and its effectiveness was verified with shaking table tests.Meanwhile, the dynamic performance of the model box was analyzed with the software ANSYS.The test and analysis results showed that the designed laminar shear model box with adjustable spring and damping has a good effect to simulate actual site with infinite boundary condition, and reflect a soil-underground structure interaction system’s dynamic response feature of being controlled by speed and displacement; the performance of model box can be adjusted according to type of model soil to meet test’s requirement of reducing model box boundary effect; the developed laminar shear box can provide a new idea for selection of test box in other geotechnical seismic engineering problems. 

Key words： laminar shear model box shaking table test displacement and velocity boundary effect soil-underground structure dynamic interaction

收稿日期: 2018-06-22 出版日期: 2020-02-28

引用本文:

安军海1,2,陶连金2. 振动台试验新型叠层剪切模型箱的设计与性能测试[J]. 振动与冲击, 2020, 39(5): 201-207.
AN Junhai1,2, TAO Lianjin2. Shaking table tests for design and performance of a new type laminar shear model box. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(5): 201-207.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I5/201

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