体外索预应力技术在空腹式拱桥中的应用  

Application of External Cable Pre-stressing Technology in Open-spandrel Arch Bridge

作　　者：柯海鹏 Ke Haipeng

机构地区：[1]浙江富春紫光环保股份有限公司

出　　处：《城市道桥与防洪》2019年第10期170-172,M0020,共4页Urban Roads Bridges & Flood Control

摘　　要：结合体外索预应力技术在某空腹式拱桥施工应用的实例,介绍了施工中通过对不同作业阶段受力分析,以合理确定预应力工艺流程和张拉顺序,并对预应力主要施工技术进行了阐述,对常见质量问题原因分析,从而提出技术应用的控制要点,以期对类似工程起到指导借鉴作用。Based on an example of the external cable pre-stressing technology applied in the construction of an open-spandrel arch bridge, this paper introduces the reasonable determination of the pre-stressing technological process and tension sequence in the construction through the stress analysis of the different construction periods, and sets forth the main pre-stressing construction technologies. This paper analyzes the causes of common quality problems so as to put forward the control essentials of technological application and to play the guidance and reference roles for the similar projects.

关 键 词：体外索预应力 张拉 孔道灌浆 技术要点 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]