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A platform for research: civil engineering, architecture and urbanism
Axial-force-free closure method for midspan of cable-stayed bridge
The invention provides a cable-stayed bridge midspan axial-force-free closure method and a cable-stayed bridge midspan axial-force-free closure method. According to the cable-stayed bridge midspan axial-force-free closure method, two symmetrically-arranged axial-force-free connection closure sections are included, and each axial-force-free connection closure section comprises a closure section outer sleeve steel box beam and an embedded steel guide beam which is arranged in the closure section outer sleeve steel box beam and can longitudinally move. The two axial-force-free connection closure sections are separately hoisted, and the axial-force-free connection closure section on one side is tightened and fixed through the chain block, so that the axis deviation of a steel box girder and the posture of a closure opening are conveniently adjusted through the chain blocks which are arranged in a crossed mode when butt-joint bolts are installed, and a steel guide beam is embedded in the free end of the axial-force-free connector to be connected in sequence; bolt connection has adjustment allowance, the problem that bolt hole alignment connection is very difficult is solved, meanwhile, the closure section without axial force connection is manufactured and installed in a factory in a segmented mode, large hoisting equipment does not need to be additionally arranged in the construction process, the construction cost can be saved, the on-site installation and position adjusting method is simple, operation is convenient, and the installation and positioning precision is high.
本发明提供斜拉桥跨中无轴力合龙方法，斜拉桥跨中无轴力合龙方法，包括两个对称设置的无轴力连接合龙段，无轴力连接合龙段包括合龙段外套钢箱梁和设置在合龙段外套钢箱梁中的可纵向平移的内嵌钢导梁。通过两段无轴力连接合龙段分开吊装，并且其中一侧的无轴力连接合龙段利用手拉葫芦收紧固定，便于在安装对接螺栓时，通过交叉布置的手拉葫芦调整钢箱梁轴线偏差，精调合龙口姿态，使无轴力接头自由端内嵌钢导梁顺接，使螺栓连接有调整余量，解决螺栓孔对位连接非常困难的问题，同时，无轴力连接合龙段在工厂分段制造和分段安装，施工中不需要另增加大型起重设备，可节约施工成本，现场安装和调位方法简单，操作方便，安装定位精度高。
Axial-force-free closure method for midspan of cable-stayed bridge
The invention provides a cable-stayed bridge midspan axial-force-free closure method and a cable-stayed bridge midspan axial-force-free closure method. According to the cable-stayed bridge midspan axial-force-free closure method, two symmetrically-arranged axial-force-free connection closure sections are included, and each axial-force-free connection closure section comprises a closure section outer sleeve steel box beam and an embedded steel guide beam which is arranged in the closure section outer sleeve steel box beam and can longitudinally move. The two axial-force-free connection closure sections are separately hoisted, and the axial-force-free connection closure section on one side is tightened and fixed through the chain block, so that the axis deviation of a steel box girder and the posture of a closure opening are conveniently adjusted through the chain blocks which are arranged in a crossed mode when butt-joint bolts are installed, and a steel guide beam is embedded in the free end of the axial-force-free connector to be connected in sequence; bolt connection has adjustment allowance, the problem that bolt hole alignment connection is very difficult is solved, meanwhile, the closure section without axial force connection is manufactured and installed in a factory in a segmented mode, large hoisting equipment does not need to be additionally arranged in the construction process, the construction cost can be saved, the on-site installation and position adjusting method is simple, operation is convenient, and the installation and positioning precision is high.
本发明提供斜拉桥跨中无轴力合龙方法，斜拉桥跨中无轴力合龙方法，包括两个对称设置的无轴力连接合龙段，无轴力连接合龙段包括合龙段外套钢箱梁和设置在合龙段外套钢箱梁中的可纵向平移的内嵌钢导梁。通过两段无轴力连接合龙段分开吊装，并且其中一侧的无轴力连接合龙段利用手拉葫芦收紧固定，便于在安装对接螺栓时，通过交叉布置的手拉葫芦调整钢箱梁轴线偏差，精调合龙口姿态，使无轴力接头自由端内嵌钢导梁顺接，使螺栓连接有调整余量，解决螺栓孔对位连接非常困难的问题，同时，无轴力连接合龙段在工厂分段制造和分段安装，施工中不需要另增加大型起重设备，可节约施工成本，现场安装和调位方法简单，操作方便，安装定位精度高。
Axial-force-free closure method for midspan of cable-stayed bridge
斜拉桥跨中无轴力合龙方法
ZENG XIANLIU (author) / YUE XINXING (author) / LEE DONG HWI (author) / ZHOU FANWU (author) / YU DEAN (author) / CAO HANCHENG (author)
2023-08-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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