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A platform for research: civil engineering, architecture and urbanism
Steel truss girder bridge support-free few-buckle-cable cantilever assembling construction method
The invention provides a construction method for splicing a bracket-free few-buckle-cable cantilever of a steel truss girder bridge. The construction method comprises the following steps: establishing a construction coordinate system; a 0 # beam section is installed, after the 0 # beam section is installed, the 0 # beam section and the steel cover beam are temporarily and fixedly connected, and the 0 # beam section is a pier top beam section; after temporary consolidation between the 0 # beam section and the steel cover beam is completed, a buckling tower is installed on the top face of the 0 # beam section; after installation of the buckling tower is completed, symmetrical cantilevers are started to assemble steel truss girder segment rod pieces; during closure, counter-force frames are arranged on lattice piers on the two sides and are oppositely pulled to enable the lattice piers to deviate, and therefore the requirements for adjusting the length of a closure opening and completing unstressed closure are met; and after closure is completed and concrete pouring of the bridge floor is completed, the buckling tower is dismantled. The construction method is slightly influenced by environmental factors, the support-free and few-buckle-cable cantilevers are adopted for assembling the steel truss girders, the problem that supports are difficult to erect in deep reservoir areas and mountainous area canyon environments can be solved, and influences on roads or river passing under bridges are reduced.
本发明提供一种钢桁梁桥无支架少扣索悬臂拼装施工工法，包括如下步骤：建立施工坐标系；进行0#梁段的安装，在0#梁段安装完成后将其与钢盖梁进行临时固结，所述0#梁段为墩顶梁段；在完成0#梁段与钢盖梁间的临时固结后，在0#梁段顶面安装扣塔；完成扣塔的安装后开始对称悬臂拼装钢桁梁节段杆件；进行合龙段安装，在合龙时，在两侧格构墩设置反力架对拉使其偏移，从而达到调整合龙口长度，完成无应力合龙的要求；合龙完成后，以及桥面混凝土浇筑完成后拆除扣塔。该工法法受环境因素影响小，采用无支架少扣索悬臂拼装钢桁梁，可解决深水库区、山区峡谷环境支架搭设难题，减少对桥下道路或河流通行影响。
Steel truss girder bridge support-free few-buckle-cable cantilever assembling construction method
The invention provides a construction method for splicing a bracket-free few-buckle-cable cantilever of a steel truss girder bridge. The construction method comprises the following steps: establishing a construction coordinate system; a 0 # beam section is installed, after the 0 # beam section is installed, the 0 # beam section and the steel cover beam are temporarily and fixedly connected, and the 0 # beam section is a pier top beam section; after temporary consolidation between the 0 # beam section and the steel cover beam is completed, a buckling tower is installed on the top face of the 0 # beam section; after installation of the buckling tower is completed, symmetrical cantilevers are started to assemble steel truss girder segment rod pieces; during closure, counter-force frames are arranged on lattice piers on the two sides and are oppositely pulled to enable the lattice piers to deviate, and therefore the requirements for adjusting the length of a closure opening and completing unstressed closure are met; and after closure is completed and concrete pouring of the bridge floor is completed, the buckling tower is dismantled. The construction method is slightly influenced by environmental factors, the support-free and few-buckle-cable cantilevers are adopted for assembling the steel truss girders, the problem that supports are difficult to erect in deep reservoir areas and mountainous area canyon environments can be solved, and influences on roads or river passing under bridges are reduced.
本发明提供一种钢桁梁桥无支架少扣索悬臂拼装施工工法，包括如下步骤：建立施工坐标系；进行0#梁段的安装，在0#梁段安装完成后将其与钢盖梁进行临时固结，所述0#梁段为墩顶梁段；在完成0#梁段与钢盖梁间的临时固结后，在0#梁段顶面安装扣塔；完成扣塔的安装后开始对称悬臂拼装钢桁梁节段杆件；进行合龙段安装，在合龙时，在两侧格构墩设置反力架对拉使其偏移，从而达到调整合龙口长度，完成无应力合龙的要求；合龙完成后，以及桥面混凝土浇筑完成后拆除扣塔。该工法法受环境因素影响小，采用无支架少扣索悬臂拼装钢桁梁，可解决深水库区、山区峡谷环境支架搭设难题，减少对桥下道路或河流通行影响。
Steel truss girder bridge support-free few-buckle-cable cantilever assembling construction method
钢桁梁桥无支架少扣索悬臂拼装施工工法
HUANG YONGHONG (author) / LUO YUZHOU (author) / WU JIE (author) / HUANG XINGSHENG (author) / PENG YUN (author) / ZHAO KUN (author)
2024-06-11
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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