大吨位箱涵柔性拉杆顶拉法施工技术研究  

Research on Jacking-pulling Method of Flexible Tension Bar for the Large Tonnage Box Culvert

作　　者：胡国伟 HU Guowei(China Railway No. 3 Engineering Group Co. ,Ltd. , Taiyuan 030001 , China)

机构地区：[1]中铁三局集团有限公司,太原030001

出　　处：《高速铁路技术》2018年第2期84-89,共6页High Speed Railway Technology

摘　　要：山西孝义市北景观大道东延工程在孝南楼东俊安发运站以框架箱涵的形式穿越既有线的5股道及5个货场,框架箱涵共9节,全长203.24 m。针对此框架涵吨位大、顶力大、顶程超长、工作场地有限等特点,选用顶拉法施工方案,并对顶拉法配套装置研发设计,采用了预应力钢绞线束构成的柔性拉杆配合夹片限位板装置。经过现场检验,总结形成适用于大吨位箱涵的柔性拉杆顶拉法。较好的解决该框架桥的施工技术难题,为类似工程提供了较好的借鉴。The East Extension Project of North Landscape Avenue is located in Xiaoyi City,Shanxi province. The Frame Box Culvert passes five Tracks and five Freight Yards which are located at Loudong Jun^n delivery station in Xiaogan district. The culvert has 9 sections, 203. 24 m long. According to characteristics of the culvert, such as large tonnageN large jacking force,long jacking path,limited work place and so o n, jacking-pulling method is adopted. The matching devices of jacking-pulling are designed, the flexible tension bars made of prestressed steel strand are used, and the devices of clip location-limited plate is also used. After field inspection, jacking-pulling methods suitable for flexible tension bars of large tonnage box culvert are summarized. It is better to solve the construction technical problems of the frame bridge, and provides good references for similar projects.

关 键 词：大吨位 箱涵 柔性拉杆 顶拉法 钢绞线 

分 类 号：U445.462[建筑科学—桥梁与隧道工程]