40m预制箱梁用预应力钢管混凝土自平衡式静载试验装置技术研究  

Technical Research on Self-balancing Static Load Test Device of Prestressed Concrete-filled Steel Tube for Testing 40 m Prefabricated Box Girder

作　　者：王媛 Wang Yuan(China Railway 14^th Bureau Group Beijing Zhongtie Fangshan Bridge Co.Ltd.,Beijing 102400,China)

机构地区：[1]中铁十四局集团北京中铁房山桥梁有限公司,北京102400

出　　处：《铁道建筑技术》2018年第7期4-6,16,共4页Railway Construction Technology

基　　金：中国铁路总公司科技研究开发计划课题(2016G002-G)

摘　　要：40 m双线整孔预制箱梁已研制成功,并纳入铁路新线设计计划。而目前现有32 m双线整孔预制箱梁静载试验台远不能满足即将生产的40 m预制箱梁的静载试验要求。本文对预应力钢管混凝土自平衡式静载试验装置的工作原理、技术特点等方面做了说明,并对自平衡式静载试验装置的受力分析进行了计算,得到该试验装置可以用于40 m双线整孔预制箱梁的静载试验。并且从技术应用、经济效益等方面对自平衡静载试验进行分析,得出此静载试验装置是一种技术先进、安全适用、经济合理、适应搬迁的新型静载试验台。The 40 m double-line full-hole prefabricated box girder has been successfully developed and incorporated into the new railway line design plan. However, the current 32 m double-line fall-hole prefabricated box girder static load test platform is far from meeting the static load test requirements of the 40 m prefabricated box girder production. This paper describes the working principles and technical characteristics of the self-balancing static load test device for prestressed concrete-filled steel tube （CFST）, and carries out force analysis of the self-balancing static load tester, concluding that the device can be used to test the 40 m double-line full-hole prefabricated box girder. By analyzing technical application prospect and economic benefits of self-balancing static load test, it is concluded that this static load test device is a new static load test platform that is advanced in technology, and it is safe, economical and applicable to relocation.

关 键 词：客运专线 40m预制箱梁 自平横式 静载试验 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]