深水斜拉桥主塔模型水下振动台动力试验研究  

Model Test on the Underwater Shaking Table for the Tower of Deepwater Cable-stayed Bridge

作　　者：柳春光[1] 张继伟[1] 张士博[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《水利与建筑工程学报》2016年第3期118-123,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家重点基础研究发展计划资助"973计划"项目(2011CB013605-4);辽宁省优秀人才基金(2014020012);高等学校博士学科点博导专项科研基金(20130041110036)

摘　　要：为了探究动水压力对斜拉桥主塔地震响应的影响,探索并完善大型斜拉桥桥塔抗震分析方法及设计理论,通过实施水下振动台模型试验,对拟设计的国内主跨最长的深水斜拉桥主塔结构在地震作用下的动力响应进行了系统研究。通过采集并分析应变、加速度和动水压力数据,探讨了模型结构的抗震性能和动力响应受动水压力的影响,同时验证了将动力模型试验应用于大型工程结构抗震研究的有效性。In order to explore the effect of hydrodynamic pressure on the tower of deepwater cable-stayed bridge and enrich the seismic research technology of cable-stayed bridges,the study on the dynamic response under earthquake action of the tower of the deepwater cable-stayed bridge with nationally longest main span was carried out by conducting model test on the underwater shaking table.The experiment implementation process has been described particularly,which includes project background,model design and manufacturing operation and shaking table test.By collecting and analyzing the strain,acceleration and hydrodynamic pressure data,the influences of hydrodynamic pressure on the earthquake resistance characteristics of the model structure and the dynamic response under earthquake were discussed.The validity of the dynamic model test applied to the seismic research of large-scale engineering structures was also examined.

关 键 词：模型试验 斜拉桥桥塔 振动台 动水压力 地震作用 

分 类 号：TU442.55[建筑科学—岩土工程]