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Study on soil-pile-structure-TMD interaction system by shaking table model test

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Earthquake Engineering and Engineering Vibration 2004年第1期3卷 127-137页

作者：楼梦麟王文剑 State Key Laboratory for Disaster Reduction in Civil Engineering Tongji University

The success of the tuned mass damper (TMD) in reducing wind-induced structural vibrations has been well established. However, from most of the recent numerical studies, it appears that for a structure situated on very soft soil, soil-structure interaction (SSI) could render a damper on the structure totally ineffective. In order to experimentally verify the SSI effect on the seismic performance of TMD, a series of shaking table model tests have been conducted and the results are presented in this paper. It has been shown that the TMD is not as effective in controlling the seismic responses of structures built on soft soil sites due to the SSI effect. Some test results also show that a TMD device might have a negative impact if the SSI effect is neglected and the structure is built on a soft soil site. For structures constructed on a soil foundation, this research verifies that the SSI effect must be carefully understood before a TMD control system is designed to determine if the control is necessary and if the SSI effect must be considered when choosing the optimal parameters of the TMD device.

关键词： soil-pile-structure interaction TMD’s performance structural control shaking table model test

Analysis of the stability and seismic behavior of the geosynthetic-reinforced embankments under earthquake

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Journal of Mountain Science 2020年第5期17卷 1269-1280页

作者： ZHU Hong-wei YAO Ling-kan XU Guang-xing School of Environment and Resources Southwest University of Science and TechnologyMianyang 621010China MOE Key Laboratory of High-speed Railway Engineering Southwest Jiaotong UniversityChengdu 610031China Research of National Defense Communication Shijiazhuang Tiedao UniversityShijiazhuang 050043

The stability and seismic behavior of geosynthetic-reinforced embankments during the earthquake is not well *** this paper,the damage types of embankments were summarized,and the seismic stability of reinforced embankment were analyzed through an earthquake damage investigation in the Wenchuan earthquake ***,large-scale shaking table model tests were performed on the geosynthetic-reinforced *** results show that the damage level of the reinforced embankment was almost less than that of the unreinforced *** peak seismic earth pressure was nonlinear along the height of the embankment,the largest peak seismic earth pressure was roughly in the middle of the embankment *** peak ground accelerations(PGA)amplification factor first showed an increasing pattern and then a decreasing pattern with the increase of elevation,but there was a final increasing trend along the height of the reinforced *** results can help to establish the proper design of the reinforcement embankments under earthquake conditions.

关键词： Reinforced embankment Stability Seismic behavior shaking table model test

test and numerical simulation of a new type of hybrid control technique

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Earthquake Engineering and Engineering Vibration 2005年第2期4卷 305-310页

作者：孟庆利张敏政陈栋 Institute of Engineering Mechanics China Earthquake AdministrationHarbin 150080China AssociateProfessor Institute of Engineering Mechanics China Earthquake AdministrationHarbin 150080China Professor Postgraduate

In this paper, a new hybrid control technique, based on a combination of base-isolation and semi-active variable stiffness/damping in a superstructure, is presented. To illustrate the efficiency of the proposed control system, model tests on a mini-electromagnetic shaking table and a numerical simulation were performed. The test and numerical calculation results indicate that this new hybrid control mode with additional damping and smaller additional stiffness can achieve a better control efficiency.

关键词： base-isolation semi-active variable stiffness/damping control hybrid control shaking table model test

Dynamic response characteristics of super high-rise buildings subjected to long-period ground motions

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Journal of Central South University 2013年第5期20卷 1341-1353页

作者：陈清军袁伟泽李英成曹丽雅 State Key Laboratory of Disaster Reduction in Civil Engineering(Tongji University) Biology and Environment Branch of Jiaxing Vocational and Technical College

Spectrum characteristics of different types of seismic waves and dynamic response characteristics of super high-rise building structures under long-period ground motions were comparatively analyzed. First, the ground response wave （named LS-R wave） of a soft soil site with deep deposit, taking long-period bedrock seismic record as input, was calculated by wave propagation method. After that, a TOMAKOMAI station long-period seismic record from the Tokachi-Oki earthquake and conventional E1-Centro wave were also chosen. Spectrum characteristics of these waves were analyzed and compared. Then, a series of shaking table tests were performed on a 1：50 scale super high-rise structural model under these seismic waves. Furthermore, numerical simulation of the prototype structure under these excitations was conducted, and structure damages under different intensive ground motions were discussed. The results show that： 1） Spectrum characteristics of ground response wave are significantly influenced by soft soil site with deep deposit, and the predominant period has an increasing trend. 2） The maximum acceleration amplification factor of the structure under the TOM wave is two times that under the E1-Centro wave; while the maximum displacement response of the structure under the TOM wave is 4.4 times that under the E1-Centro wave. Long-period ground motions show greater influences on displacement responses than acceleration responses for super high-rise building structures. 3） Most inelastic damage occurs at the upper 1/3 part of the super high-rise building when subjected to long-period ground motions.

关键词： long-period ground motion super high-rise building shaking table model test numerical simulation spectrumcharacteristic analysis