市域铁路预应力简支箱梁张拉施工控制  

Tensile Construction Control of Prestressed Simply Supported Box Girder of Municipal Railway

作　　者：许长建 XU Chang-jian(Wenzhou Mass Transit Railway Investment Group Co.Ltd.,Wenzhou 325000,China)

机构地区：[1]温州市铁路与轨道交通投资集团有限公司,浙江温州325000

出　　处：《工程建设与设计》2021年第15期137-139,共3页Construction & Design for Engineering

摘　　要：结合某市域铁路工程,阐述箱梁设计情况以及选择的施工设备,探讨预应力混凝土简支梁张拉施工的要点,包括预应力材料选取、核对伸长值、管理张拉过程等方面,提出箱梁后期徐变上拱的施工控制措施。Combined with a municipal railway project,this paper expounds the design of box girder and the construction equipment selected,discusses the key points of the tensioning construction of prestressed concrete simply supported girder,including the selection of prestressed materials,checking the elongation value and managing the tensioning process,and puts forward the construction control measures of the creeping upper arch of box girder in the later stage.

关 键 词：市域铁路 预应力简支箱梁 张拉控制 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]