基于多振动台的土-结相互作用动力子结构试验方法研究
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摘要
土-结构动力相互作用的研究已经持续了100多年,取得了大量理论研究成果,但受试验设备和试验方法的限制,试验研究还很欠缺。土-结构动力相互作用的整体分析法是将土和结构同时作为试验对象,其对试验设备尺寸和输出荷载要求较高,目前只能进行大比例缩尺试验,即便如此,对于桥梁等长大型结构在多维多点地震作用下的性能的试验,目前的试验设备也无能为力。近年来得到发展的实时子结构实验方法的优点就是能够在现有实验条件下对工程结构中关键部分进行足尺实验,该方法为实现多维多点土-结构动力相互作用混合试验提供了可能。本文以九子台模拟地震振动台台阵为设备基础,将土模型作为数值子结构,结构物作为物理子结构,研究考虑土-结构动力相互作用的多维多点混合抗震试验方法。
Interaction of soil-structure(SSI) has been investigated for more than one hundred.Numerous theoretical results were acquired,but there is a scarcity of experimental research,due to the deficiency of test facility and techniques.Both the soil and the structures are specimen in the holistic method,so that the size and force/power of the test facility are very demanding.Only large scaled model test can be accomplished using holistic method at present.Even though,holistic method is helplessness to the shake table tests of largespan structure,such as bridge,latticed shells and so on,under multi-dimensional and multi-support excitations. Substructure method still rests on the theory research stage,no testing method about it reported.The dynamically sub structured system(DSS) method is proposed in recent years allowing juts one critical element (or elements) of the overall system to be investigated at full size,with the remainder being run in parallel as a real-time simulation,it makes it possible for interaction of soil-structure hybrid testing method by substructure method to come true.This paper presents the implementing of a novel DSS method based on the shaking table array,in which interaction of soil-structure(DSS-SSI) can be considered under multi-dimensional and multi-support excitations.
Interaction of soil-structure(SSI) has been investigated for more than one hundred.Numerous theoretical results were acquired,but there is a scarcity of experimental research,due to the deficiency of test facility and techniques.Both the soil and the structures are specimen in the holistic method,so that the size and force/power of the test facility are very demanding.Only large scaled model test can be accomplished using holistic method at present.Even though,holistic method is helplessness to the shake table tests of largespan structure,such as bridge,latticed shells and so on,under multi-dimensional and multi-support excitations. Substructure method still rests on the theory research stage,no testing method about it reported.The dynamically sub structured system(DSS) method is proposed in recent years allowing juts one critical element (or elements) of the overall system to be investigated at full size,with the remainder being run in parallel as a real-time simulation,it makes it possible for interaction of soil-structure hybrid testing method by substructure method to come true.This paper presents the implementing of a novel DSS method based on the shaking table array,in which interaction of soil-structure(DSS-SSI) can be considered under multi-dimensional and multi-support excitations.
引文
[1]孙树民.土-结构动力相互作用研究进展[J].中国海洋平台,2001,16(5):31-37. Sun S M.The Development of Research on Soil-Structure Dynamic Interaction[J].China offshore Platform, 2001,16(5):31-37(in Chinese).
[2]尚守平,张继松,王海东,朱志辉.土-箱基-框架结构动力相互作用体系试验研究[J].湖南大学学报,2007,4(1):1-4. Shang S,Zhang J S,Wang H D,Zhu Z H.Test Study of the Dynamic Interaction of Structure-Box Foundation-Soil System[J].Journal of Hunan University (Natural Sciences ),2007,4(1 ):1-4(in Chinese ).
[3]陈跃庆,吕西林,李培振,陈波.不同土性的地基-结构动力相互作用振动台模型试验对比研究[J].土木工程学报,2006,39(5):57-64. ??Chen Y Q,Lu X L,Li P Z,Chen B.Comparative study on the dy-namic soil-structure interaction system with various soils by using shaking table model tests[J].China Civil Engineering Journal,2006,39 (5 ):57-64(in Chinese).
[4]楼梦麟,王文剑,马恒春,朱彤.土-桩-结构相互作用体系的振动台模型试验[J].同济大学学报, 2001,29(7):763-768. Lou M L,Wang W J,Ma H C,Zhu T.Study on Soilpile -structure Interaction System by Shaking Table Model Test[J].Journal of Tongji University,2001, 29(7):763-768(in Chinese).
[5]Wolf J P.Dynamic Soil-Structure Interaction.Englewood Cliffs,New Jersey,Prentice-Hall,1985.
[6]栾茂田,林皋.地基动力阻抗的双自由度集总参数模型[J].大连理工大学学报,1996,36(4):477- 482. Luan M T,Lin G.2 DOF lumped parameter model of dynamic impedances of foundation soils[J].Journal of dalian university of technology,1996,36(4 ): 477-482(in Chinese).
[7]杜修力,赵建锋,韩强.精度可控地基阻抗力的一种时域差分计算方法[J].力学学报,2008,40 (1):59-66. Du X L,Zhao J F,Han Q.Accuracy controllable time-domain difference approach to calculate foundation resisting force[J].Chinese Journal of Theoretical and Applied Mechanics,2008,40(1 ):59-66(in Chinese).
[8]Nakashima M,Kato H,Takaoka E.Development of real-time pseudo dynamic testing[J].Earthquake Engineering and Structure Dynamics,1992,21:79- 92.
[9]Cheng Chen,James M.Ricles,M.ASCE.Development of direct integration algorithms for structural dynamics using discrete control theory[J].Journal of Engineering Mechanics 2008,134(8 ):676-683.
[10]Stoten D P,Hyde R A.Adaptive control of dynamically substructured systems:the single-input singleoutput case[J].Proceedings of the Institution of Mechanical Engineers,PartⅠ:Journal of Systems and Control Engineering,2006,220:63-79.
[2]尚守平,张继松,王海东,朱志辉.土-箱基-框架结构动力相互作用体系试验研究[J].湖南大学学报,2007,4(1):1-4. Shang S,Zhang J S,Wang H D,Zhu Z H.Test Study of the Dynamic Interaction of Structure-Box Foundation-Soil System[J].Journal of Hunan University (Natural Sciences ),2007,4(1 ):1-4(in Chinese ).
[3]陈跃庆,吕西林,李培振,陈波.不同土性的地基-结构动力相互作用振动台模型试验对比研究[J].土木工程学报,2006,39(5):57-64. ??Chen Y Q,Lu X L,Li P Z,Chen B.Comparative study on the dy-namic soil-structure interaction system with various soils by using shaking table model tests[J].China Civil Engineering Journal,2006,39 (5 ):57-64(in Chinese).
[4]楼梦麟,王文剑,马恒春,朱彤.土-桩-结构相互作用体系的振动台模型试验[J].同济大学学报, 2001,29(7):763-768. Lou M L,Wang W J,Ma H C,Zhu T.Study on Soilpile -structure Interaction System by Shaking Table Model Test[J].Journal of Tongji University,2001, 29(7):763-768(in Chinese).
[5]Wolf J P.Dynamic Soil-Structure Interaction.Englewood Cliffs,New Jersey,Prentice-Hall,1985.
[6]栾茂田,林皋.地基动力阻抗的双自由度集总参数模型[J].大连理工大学学报,1996,36(4):477- 482. Luan M T,Lin G.2 DOF lumped parameter model of dynamic impedances of foundation soils[J].Journal of dalian university of technology,1996,36(4 ): 477-482(in Chinese).
[7]杜修力,赵建锋,韩强.精度可控地基阻抗力的一种时域差分计算方法[J].力学学报,2008,40 (1):59-66. Du X L,Zhao J F,Han Q.Accuracy controllable time-domain difference approach to calculate foundation resisting force[J].Chinese Journal of Theoretical and Applied Mechanics,2008,40(1 ):59-66(in Chinese).
[8]Nakashima M,Kato H,Takaoka E.Development of real-time pseudo dynamic testing[J].Earthquake Engineering and Structure Dynamics,1992,21:79- 92.
[9]Cheng Chen,James M.Ricles,M.ASCE.Development of direct integration algorithms for structural dynamics using discrete control theory[J].Journal of Engineering Mechanics 2008,134(8 ):676-683.
[10]Stoten D P,Hyde R A.Adaptive control of dynamically substructured systems:the single-input singleoutput case[J].Proceedings of the Institution of Mechanical Engineers,PartⅠ:Journal of Systems and Control Engineering,2006,220:63-79.
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