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申彦利,范栋鑫. 新型装配式桥墩墩底连接性能分析[J]. 科学技术与工程, 2020, 20(16): 6547-6553.
Yanli Shen,Dongxin Fan.Performance Analysis of New Type Assembly Pier Bottom Connection[J].Science Technology and Engineering,2020,20(16):6547-6553.
新型装配式桥墩墩底连接性能分析
Performance Analysis of New Type Assembly Pier Bottom Connection
投稿时间:2019-09-23  修订日期:2020-05-30
DOI:
中文关键词:  装配式桥墩、灌浆套筒、抗震性能、墩底连接性能
英文关键词:assembled  pie, grouting  sleeve, seismic  performance, pier  pier bottom connection perform
基金项目:国家自然科学基金资助项目(51378169);河北省高等学校科学技术研究重点项目(ZD2016147)
     
作者单位
申彦利 河北工程大学土木工程学院
河北省装配式结构工程技术研究中心
范栋鑫 河北工程大学土木工程学院
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中文摘要:
      为了研究连接组件对装配式桥墩墩-底连接性能的影响,在已有灌浆套筒连接承台与墩柱桥墩的基础上,提出了三种新型桥墩墩底连接方式,包括直槽连接桥墩模型、斜槽连接桥墩模型、圆弧槽连接桥墩模型。建立了三种不同连接方式的数值模型,并且采用低周往复荷载的方法对这三种模型进行了数值模拟并进行了对比分析,对结构的滞回曲线、骨架曲线、刚度退化、强度退化、耗能能力进行比较,结果表明:这三种连接方式均具有良好的强度、刚度和耗能能力,相较于直槽桥墩模型,斜槽和圆弧槽桥墩模型的屈服位移分别降低了49.8%和53.69%。屈服荷载分别降低了17.4%、19.9%,极限荷载分别降低了19.6%、18.7%,耗能能力分别降低了46.1%、42.1%,最大残余位移分别增大了12.2%、30.1%。由此可见直槽连接桥墩有更好的力学性能,其耗能能力更好,因此可以得出直槽连接桥墩模型在正常使用和抗震承载方面性能最佳,可以很好的适用于装配式桥墩中去。
英文摘要:
      In order to analyze the influence of connection components on pier-bottom connection performance of assembled piers, three new types of pier-bottom connection modes has been raised ,including straight-groove connection pier model, skew-groove connection pier model and arc-groove connection pier model, based on the existing grouting sleeve connection caps and pier-column piers. The numerical models of three different connection modes are presented , and we proceed numerically simulating and contrastive analysis adopting the method of low-cycle reciprocating load. Comparing the hysteretic curve, skeleton curve, stiffness degradation, strength degradation and energy dissipation capacity of the structure, we found that the three connection modes have the same characteristics in intensity.rigidity and energy dissipation capacity.Compared with the straight groove pier model, the oblique groove pier model and the circular groove pier model are reduced by 49.8% and 53.69% respectively in the aspect of the yielding displacement, 17.4% and 19.9% in yield load, 19.6% and 18.7% in ultimate load, 46.1% and 42.1% in energy dissipation capacity , but in maximum residual displacement the data are increased by 12.2% and 30.1%, respectively. Thus it can be seen that the pier with straight groove connection has better mechanical properties and better energy dissipation capacity. We concluded that the pier model with straight groove connection has the best performance in normal usage and seismic load-bearing, and can be well applied to the assembled pier.
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