摘要
为改进当前预制拼装桥墩体系的连接构造和抗震性能,根据能力设计原理和结构抗震韧性设计理念,提出一种由预制钢管混凝土墩身、可更换的锚固-连接组件及预留杯口基础的承台等组成的新型预制拼装桥墩体系。对新型预制拼装桥墩体系进行试设计,并建立其和对应的整体现浇钢管混凝土桥墩体系的精细有限元模型,进行水平低周反复荷载作用模拟分析。初步分析结果表明,本文提出的新型预制拼装桥墩体系与整体现浇钢管混凝土桥墩相比,不仅具有更佳的抗震性能,而且还具有震后可恢复性。
To improve the joint connection and seismic performance of current precast pier systems,a new precast pier system composed of a prefabricated concrete filled steel tubular(CFST)pier shaft,a replaceable anchor-connection component,and a base slab with a sleeve foundation is proposed,according to the capacity design principle and the design concept of structural seismic resilience.The trial design of the precast pier system was carried out,and the finite element(FE)models of the precast pier system and corresponding cast-in-situ CFST pier system were built.The numerical analysis of both the models under horizontal low cycle loading were carried out.The preliminary analysis results show that compared with the cast-in-situ CFST pier,the precast pier system proposed in this paper has better seismic performance and post-earthquake recoverability.
出处
《福建建设科技》
2023年第1期21-25,共5页
Fujian Construction Science & Technology
基金
福州市市政建设开发有限公司科技项目(榕市建-20190987号)
福州大学2021年国家级大学生创新创业训练计划项目(202110386010)。
关键词
预制桥墩体系
连接构造
抗震韧性设计
低周反复荷载
可更换构件
precast pier system
joint connection
seismic resilient design
low cycle repeated load
replaceable component
