单桩振动台试验及其内力分布研究
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摘要
通过模拟振动台进行了多种不同工况下单桩模型的振动实验,及单桩在地震作用下内力分布的影响因素,及在不同时刻及不同激振波形下桩的内力分布规律。通过两组静力试验对比,分析了单桩在静力和振动作用下内力分布规律的差异。实验结果表明,单桩在地震作用下的内力分布与加载类型和激振波的动力特性有很大的关系。
Dynamic experiments of single pile model were conducted under different conditions by simulating vibration table.The influence factors of internal force distribution of single piles under seismic action were analyzed;the distribution law of internal force at different times and under different excitation waveforms were explored.Through the comparison of vibration experiment with two sets of static tests,the internal force distribution law of single piles under static and seismic action was studied.The results show that the internal force distribution of single pile under seismic action is related strongly to the loading type and the dynamic characteristics of the excitation wave.
Dynamic experiments of single pile model were conducted under different conditions by simulating vibration table.The influence factors of internal force distribution of single piles under seismic action were analyzed;the distribution law of internal force at different times and under different excitation waveforms were explored.Through the comparison of vibration experiment with two sets of static tests,the internal force distribution law of single piles under static and seismic action was studied.The results show that the internal force distribution of single pile under seismic action is related strongly to the loading type and the dynamic characteristics of the excitation wave.
引文
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[7]刘建良.考虑桩—土相互作用的桥梁桩基地震响应分析方法研究[D].长春吉林大学,2011.Liu Jianliang.The seismic response analytical method of the bridge pile foundation considering the pile-soil interaction[D].Changchun:Jilin Uni-versity,2011.
[8]洪涛.水平荷载作用下预应力混凝土管桩受力性状的分析[D].合肥:合肥工业大学,2008.Hong Tao.The research on the bearing and deforming behavior of the prestressed concrete pipe pile uinder lateral loads[D].Hefei Hefei Universityof Technology,2008.
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[10]陈跃庆,吕西林,李培根,等.分层土-基础-高层框架结构相互作用体系振动台模型实验研究[J].地震工程与工程振动,2001;21(3):104-112.Chen Yueqing,Lv Xilin,Li Peigen,et al.Shaking table testing for layered soil-foundation-structure Interaction system[J].Earthquake EngineeringAnd Engineering Vibration,2001:21(3):104-112.
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