新型自复位节段拼装桥墩的抗震性能研究  

Research on Seismic Performance of a New Segmentally-assembled Self-reset Bridge Pier

作　　者：申彦利[1,2,3] 王修立 SHEN Yanli;WANG Xiuli(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;Hebei Province Prefabricated Structure Technology Innovation Center,Handan 056038,China;Engineering Research Center of New Monorail System,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北省装配式结构技术创新中心,河北邯郸056038 [3]河北工程大学新型单轨交通体系工程研究中心,河北邯郸056038

出　　处：《粉煤灰综合利用》2022年第2期111-118,共8页Fly Ash Comprehensive Utilization

基　　金：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)。

摘　　要：为减轻传统灌浆套筒自复位桥墩的地震损伤,提高其自复位能力,在传统自复位桥墩的基础上,提出了一种新型自复位节段拼装桥墩。采用数值模拟的方法,分别建立了新型自复位节段桥墩模型与传统自复位桥墩模型,并对两种桥墩模型进行了抗震性能分析。对比研究发现:在循环往复加载条件下,新型节段拼装桥墩相比传统桥墩的屈服刚度提高了11.01%,新型节段拼装桥墩的最大残余位移仅为传统自复位桥墩最大残余位移的39.19%,展现出更好的自复位性能。新型自复位节段拼装桥墩能更好地减小地震作用的损伤,提高桥墩的抗震性能,对实现装配式桥墩结构的“韧性”抗震具有一定参考意义。In order to reduce the seismic damage of the traditional grouting sleeve self-resetting pier and improve its self-resetting ability, a new type of self-resetting segmented pier was proposed on the basis of the traditional self-resetting pier.Using numerical simulation methods, a new self-resetting segmental pier model and a traditional self-resetting pier model were established, and the seismic performance of the two pier models was analyzed.The comparative study found that: under the condition of cyclic loading, the new segment assembly compared with the traditional pier, the yield stiffness of the pier is increased by 11.01%.The maximum residual displacement of the new segmented pier is only 39.19% of the maximum residual displacement of the traditional self-resetting pier, showing better self-resetting performance.The new self-resetting segment-assembled bridge pier can better reduce the damage caused by the earthquake and improve the seismic performance of the fabricated bridge pier, which has certain reference significance for realizing the "toughness" seismic resistance of the fabricated bridge pier structure.

关 键 词：节段拼装桥墩 灌浆套筒 自复位 装配式结构 抗震性能 

分 类 号：TU443.32[建筑科学—岩土工程]