考虑SSI效应的TMD减震特性振动台模型试验
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摘要
设计并完成了考虑土与结构相互作用的 TMD减震控制振动台模型试验。通过试验 ,分析了刚性地基和柔性地基上 TMD对主体结构的减震效应 ,探讨了 SSI效应对结构减震控制的影响。在此基础上 ,将柔性地基上结构— TMD体系中主体结构地震反应看作是 SSI效应、TMD减震效应以及 SSI和 TMD的耦合效应三部分共同作用结果 ,分析了不同工况下三种效应对主体结构地震反应的影响大小。试验结果表明 :SSI效应对 TMD的减震性能有很大影响 ,这使得基于刚性地基假设设计的 TMD系统在柔性地基上的减震效果不理想 ,甚至在某些时候可能产生负面效果。对刚性地基和柔性地基上影响 TMD减震性能的一些因素进行了探讨。
Shaking table model tests of TMD suppressing vibration control considering soil structural interaction(SSI) effects are designed and carried out. The TMD cushioning effects on the main structure on the rigid base and soft soil are analyzed through these tests and effects of SSI on structure are discussed. It is point out that the earthquake response of the main structure of structure TMD system on soft soil is regarded as the results of common action of SSI effect, TMD cushioning effect and the coupling effect of SSI and TMD. The effects of three factors on the earthquake response of the main structure are analyzed under different load working conditions. The results dedicate that SSI have great effects on the performance of TMD. So, the suppressing vibration control effects of TMD designed on the condition of rigid base are not satisfied in soft soil condition. Some facts relative to TMD cushioning effect on the rigid base and soft soil are discussed.
Shaking table model tests of TMD suppressing vibration control considering soil structural interaction(SSI) effects are designed and carried out. The TMD cushioning effects on the main structure on the rigid base and soft soil are analyzed through these tests and effects of SSI on structure are discussed. It is point out that the earthquake response of the main structure of structure TMD system on soft soil is regarded as the results of common action of SSI effect, TMD cushioning effect and the coupling effect of SSI and TMD. The effects of three factors on the earthquake response of the main structure are analyzed under different load working conditions. The results dedicate that SSI have great effects on the performance of TMD. So, the suppressing vibration control effects of TMD designed on the condition of rigid base are not satisfied in soft soil condition. Some facts relative to TMD cushioning effect on the rigid base and soft soil are discussed.
引文
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[3] 陈国兴,宰金珉,杨 栋,等.考虑土与结构相互作用效应的TMD减震特性研究[J].岩土工程学报,1997,(6):82-87.
[4] 陈国兴,宰金珉,杨 栋,等.考虑土与结构相互作用的非弹性结构主动抗震控制研究[J].地震工程与工程振动,1997,(4):72-80.
[5] 李海岭,葛修润.土与结构相互作用影响下TMD控制研究[J].岩土力学,2000,(1):40-44.
[6] 楼梦麟,王文剑,朱 彤,等.桩基础上结构TMD控制的振动台模型试验研究[J].同济大学学报,2000,29(6):636-643.
[7] 张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动.1997,(6):52-58.
[8] 王志华.考虑土与结构相互作用的结构减震控制振动台模型试验研究.[D].南京:南京工业大学,2002.
[2] SmithH A,WuW H,BoriaR L .Structure control consideringsoil-structural interaction[J].J.StructuralEngineering,ASCE,1993,119(9):2533-2551.
[3] 陈国兴,宰金珉,杨 栋,等.考虑土与结构相互作用效应的TMD减震特性研究[J].岩土工程学报,1997,(6):82-87.
[4] 陈国兴,宰金珉,杨 栋,等.考虑土与结构相互作用的非弹性结构主动抗震控制研究[J].地震工程与工程振动,1997,(4):72-80.
[5] 李海岭,葛修润.土与结构相互作用影响下TMD控制研究[J].岩土力学,2000,(1):40-44.
[6] 楼梦麟,王文剑,朱 彤,等.桩基础上结构TMD控制的振动台模型试验研究[J].同济大学学报,2000,29(6):636-643.
[7] 张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动.1997,(6):52-58.
[8] 王志华.考虑土与结构相互作用的结构减震控制振动台模型试验研究.[D].南京:南京工业大学,2002.
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