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A platform for research: civil engineering, architecture and urbanism
Rapid cantilever construction method for upper structure of large-span highway-rail dual-purpose steel truss girder cable-stayed bridge
The invention relates to the technical field of bridge construction, in particular to a rapid cantilever construction method for an upper structure of a large-span highway-rail dual-purpose steel truss girder cable-stayed bridge. Comprising the following steps that S1, a bridge deck crane is used for installing a cable tower cable-free area steel truss girder; s2, symmetrical cantilevers are provided with cable area steel truss girder standard sections in a splicing mode, meanwhile, welding construction of high-strength bolts and bridge deck slabs is conducted on the previous standard section adjacent to the first standard section, a bridge deck crane advances to the first standard section after welding construction is completed, and then a stay cable of the previous standard section is installed and initially tensioned; s3, part of the short cables close to the cable bent tower are released; s4, auxiliary pier supports are installed on the auxiliary piers; s5, the cable force of the last pairs of long cables of the side span and the middle span of the cable bent tower is adjusted; s6, a transition pier support is installed on the transition pier; s7, closure section construction is conducted; and S8, the stay cable subjected to cable force adjustment is subjected to supplementary tensioning. The construction method is extremely efficient, and a large amount of time is saved.
本发明涉及桥梁施工技术领域，具体地指一种大跨度公轨两用钢桁梁斜拉桥上部结构快速悬臂施工方法。包括以下步骤进行：S1、桥面吊机安装索塔无索区钢桁梁；S2、对称悬臂拼装有索区钢桁梁标准节间，同时对邻接首节标准节间的上一节标准节间进行高强度螺栓以及桥面板焊接施工，完成后桥面吊机行进至首节标准节间上，然后安装并初张上一节标准节间的斜拉索；S3、对靠近索塔的部分短索进行放张；S4、在辅助墩上安装辅助墩支座；S5、对索塔边跨和中跨最后的若干对长索的索力进行调节；S6、在过渡墩上安装过渡墩支座；S7、进行合龙段施工；S8、对之前进行索力调节的斜拉索进行补张。本发明施工方法极为高效，节省大量时间。
Rapid cantilever construction method for upper structure of large-span highway-rail dual-purpose steel truss girder cable-stayed bridge
The invention relates to the technical field of bridge construction, in particular to a rapid cantilever construction method for an upper structure of a large-span highway-rail dual-purpose steel truss girder cable-stayed bridge. Comprising the following steps that S1, a bridge deck crane is used for installing a cable tower cable-free area steel truss girder; s2, symmetrical cantilevers are provided with cable area steel truss girder standard sections in a splicing mode, meanwhile, welding construction of high-strength bolts and bridge deck slabs is conducted on the previous standard section adjacent to the first standard section, a bridge deck crane advances to the first standard section after welding construction is completed, and then a stay cable of the previous standard section is installed and initially tensioned; s3, part of the short cables close to the cable bent tower are released; s4, auxiliary pier supports are installed on the auxiliary piers; s5, the cable force of the last pairs of long cables of the side span and the middle span of the cable bent tower is adjusted; s6, a transition pier support is installed on the transition pier; s7, closure section construction is conducted; and S8, the stay cable subjected to cable force adjustment is subjected to supplementary tensioning. The construction method is extremely efficient, and a large amount of time is saved.
本发明涉及桥梁施工技术领域，具体地指一种大跨度公轨两用钢桁梁斜拉桥上部结构快速悬臂施工方法。包括以下步骤进行：S1、桥面吊机安装索塔无索区钢桁梁；S2、对称悬臂拼装有索区钢桁梁标准节间，同时对邻接首节标准节间的上一节标准节间进行高强度螺栓以及桥面板焊接施工，完成后桥面吊机行进至首节标准节间上，然后安装并初张上一节标准节间的斜拉索；S3、对靠近索塔的部分短索进行放张；S4、在辅助墩上安装辅助墩支座；S5、对索塔边跨和中跨最后的若干对长索的索力进行调节；S6、在过渡墩上安装过渡墩支座；S7、进行合龙段施工；S8、对之前进行索力调节的斜拉索进行补张。本发明施工方法极为高效，节省大量时间。
Rapid cantilever construction method for upper structure of large-span highway-rail dual-purpose steel truss girder cable-stayed bridge
大跨度公轨两用钢桁梁斜拉桥上部结构快速悬臂施工方法
HUANG CAN (author) / ZHENG JIANXIN (author) / ZHOU HAO (author) / ZHU HAO (author) / LI JIE (author) / ZHU JINZHU (author) / LI HAO (author) / DAI BAIHUA (author) / WANG YONGWEI (author) / ZHOU RENZHONG (author)
2023-01-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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