自平衡预应力中空管预应力特性研究  

Study on the characteristics of self-balance prestressed hollow tube

作　　者：邱兴友 谢鹏飞 

机构地区：[1]浙江乐清湾大桥及接线工程建设指挥部,浙江台州317600 [2]同济大学,上海200092

出　　处：《山西建筑》2018年第3期146-148,共3页Shanxi Architecture

摘　　要：针对短束预应力难以施加的问题,提出了自平衡预应力中空管技术,并对该技术进行了施加预应力前的性能试验和施加预应力后的有限元模拟,分析了自平衡预应力中空管储存应力的有效性和施加预应力后混凝土的传递长度和应力分布情况,可为自平衡预应力中空管的设计和施工提供依据。In order to solve the problem that short-beam prestress is hard to be applied,a technology of self-balancing prestressed hollow tube is proposed. The performance of this technology before prestressing was tested and the finite element simulation after prestressing was applied. The analysis of the storage stress before prestressing and the transmission length as well as stress distribution of prestressed concrete can provide the basis for the design and construction of self-balancing prestressed hollow tube.

关 键 词：自平衡预应力中空管 储存应力 传递长度 应力分布 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]