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A platform for research: civil engineering, architecture and urbanism
Incremental launching construction method for large-span steel box girder bridge crossing riverway
The invention relates to the technical field of bridge construction, and discloses a river-crossing large-span steel box girder bridge incremental launching construction method which comprises the following steps: step 1, before hoisting a steel box girder, erecting a temporary bracket near a pier stud; 2, after the temporary support is erected, the steel box girder is hoisted; 3, pushing the steel box girder by adopting efficient walking type pushing equipment, monitoring whether the elevation of the girder deck, the middle line of the bridge and the longitudinal position of the steel box girder deviate or not by utilizing an intelligent monitoring system, and modifying if the deviation occurs; 4, after the steel box girders are pushed to the corresponding positions, the steel box girders are fixed in a butt joint mode; according to the method, through the multi-stage pushing control technology and the self-adaptive temporary supporting system, the mounting precision of the steel box girder is remarkably improved, and the later adjustment cost caused by mounting errors is reduced; the safety risk of river channel crossing incremental launching construction is effectively reduced, and the problems existing in the prior art are solved.
本发明涉及桥梁施工技术领域，且公开了一种跨越河道大跨度钢箱梁桥梁顶推施工方法，包括：步骤1.在吊装钢箱梁之前，在墩柱附近搭设临时支架；步骤2：在临时支架搭设完成后，吊装钢箱梁；步骤3：采用高效步履式顶推设备对钢箱梁进行顶推，并利用智能监测体系监测钢箱梁的梁桥面高程、桥梁中线及纵向位置是否发生偏移，若发生偏移则进行修改；步骤4：在钢箱梁顶推至相应位置后，对接固定钢箱梁；本方法通过多级顶推控制技术和自适应临时支撑系统，显著提高了钢箱梁的安装精度，降低了因安装误差导致的后期调整成本；有效降低了跨越河道顶推施工的安全风险，解决了现有技术存在的问题。
Incremental launching construction method for large-span steel box girder bridge crossing riverway
The invention relates to the technical field of bridge construction, and discloses a river-crossing large-span steel box girder bridge incremental launching construction method which comprises the following steps: step 1, before hoisting a steel box girder, erecting a temporary bracket near a pier stud; 2, after the temporary support is erected, the steel box girder is hoisted; 3, pushing the steel box girder by adopting efficient walking type pushing equipment, monitoring whether the elevation of the girder deck, the middle line of the bridge and the longitudinal position of the steel box girder deviate or not by utilizing an intelligent monitoring system, and modifying if the deviation occurs; 4, after the steel box girders are pushed to the corresponding positions, the steel box girders are fixed in a butt joint mode; according to the method, through the multi-stage pushing control technology and the self-adaptive temporary supporting system, the mounting precision of the steel box girder is remarkably improved, and the later adjustment cost caused by mounting errors is reduced; the safety risk of river channel crossing incremental launching construction is effectively reduced, and the problems existing in the prior art are solved.
本发明涉及桥梁施工技术领域，且公开了一种跨越河道大跨度钢箱梁桥梁顶推施工方法，包括：步骤1.在吊装钢箱梁之前，在墩柱附近搭设临时支架；步骤2：在临时支架搭设完成后，吊装钢箱梁；步骤3：采用高效步履式顶推设备对钢箱梁进行顶推，并利用智能监测体系监测钢箱梁的梁桥面高程、桥梁中线及纵向位置是否发生偏移，若发生偏移则进行修改；步骤4：在钢箱梁顶推至相应位置后，对接固定钢箱梁；本方法通过多级顶推控制技术和自适应临时支撑系统，显著提高了钢箱梁的安装精度，降低了因安装误差导致的后期调整成本；有效降低了跨越河道顶推施工的安全风险，解决了现有技术存在的问题。
Incremental launching construction method for large-span steel box girder bridge crossing riverway
一种跨越河道大跨度钢箱梁桥梁顶推施工方法
WANG LEI (author) / FANG ZI'AN (author) / LIU JICHANG (author) / HUANG YIJIE (author) / NIE RUIFENG (author)
2024-11-29
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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