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A platform for research: civil engineering, architecture and urbanism
Construction process of large-span fabricated steel-concrete combined simply-supported box girder
The invention discloses a construction process of a large-span fabricated steel-concrete combined simply-supported box girder, and relates to the technical field of bridges. The construction process comprises the following steps: starting, calculating a construction period, and compiling a construction progress plan; carrying out construction preparation, and enabling personnel, materials and machines to enter the site; carrying out lofting and marking; carrying out unit manufacturing; manufacturing a jig frame; mounting a bottom die; combining and splicing box girder units; carrying out in-plant segmented pre-assembly; carrying out in-plant welding; carrying out weld flaw detection; coating a steel frame; and installing a cushion block. The construction process of the large-span fabricated steel-concrete combined simply-supported box girder has the advantages of simplifying construction procedures, reducing off-site operation, reducing support construction, being high in mechanization degree, saving cost and shortening the construction period, and solves the problems that the span of an existing assembly type prestressed concrete bridge cannot meet the span requirement, a temporary support cannot be erected when a traditional superposed beam is adopted, an all-steel beam is high in manufacturing cost, the construction difficulty is increased, the cost is improved and the risk is increased.
本发明公开了一种大跨径装配式钢混组合简支箱梁施工工艺，涉及桥梁技术领域，包括：开始，计算施工工期，编制施工进度计划；进行施工准备，人员、材料和机械进场；进行放样号料；进行单元制作；进行胎架制作；进行底模安装；进行箱梁单元的组合拼装；进行厂内分段预拼装；进行厂内焊接；进行焊缝探伤检测；进行钢架涂装；进行垫块安装。该大跨径装配式钢混组合简支箱梁施工工艺，具有简化施工工序、减少场外作业、降低支架施工、机械化程度高和节约成本以及缩短工期的优点，解决了目前装配式预应力砼桥跨径无法满足跨径要求，采用传统叠合梁又无法搭设临时支架，全钢梁造价又高，导致施工难度加大，成本增高，风险性增大的问题。
Construction process of large-span fabricated steel-concrete combined simply-supported box girder
The invention discloses a construction process of a large-span fabricated steel-concrete combined simply-supported box girder, and relates to the technical field of bridges. The construction process comprises the following steps: starting, calculating a construction period, and compiling a construction progress plan; carrying out construction preparation, and enabling personnel, materials and machines to enter the site; carrying out lofting and marking; carrying out unit manufacturing; manufacturing a jig frame; mounting a bottom die; combining and splicing box girder units; carrying out in-plant segmented pre-assembly; carrying out in-plant welding; carrying out weld flaw detection; coating a steel frame; and installing a cushion block. The construction process of the large-span fabricated steel-concrete combined simply-supported box girder has the advantages of simplifying construction procedures, reducing off-site operation, reducing support construction, being high in mechanization degree, saving cost and shortening the construction period, and solves the problems that the span of an existing assembly type prestressed concrete bridge cannot meet the span requirement, a temporary support cannot be erected when a traditional superposed beam is adopted, an all-steel beam is high in manufacturing cost, the construction difficulty is increased, the cost is improved and the risk is increased.
本发明公开了一种大跨径装配式钢混组合简支箱梁施工工艺，涉及桥梁技术领域，包括：开始，计算施工工期，编制施工进度计划；进行施工准备，人员、材料和机械进场；进行放样号料；进行单元制作；进行胎架制作；进行底模安装；进行箱梁单元的组合拼装；进行厂内分段预拼装；进行厂内焊接；进行焊缝探伤检测；进行钢架涂装；进行垫块安装。该大跨径装配式钢混组合简支箱梁施工工艺，具有简化施工工序、减少场外作业、降低支架施工、机械化程度高和节约成本以及缩短工期的优点，解决了目前装配式预应力砼桥跨径无法满足跨径要求，采用传统叠合梁又无法搭设临时支架，全钢梁造价又高，导致施工难度加大，成本增高，风险性增大的问题。
Construction process of large-span fabricated steel-concrete combined simply-supported box girder
一种大跨径装配式钢混组合简支箱梁施工工艺
LU LIANGCHEN (author) / PAN WENYOU (author) / CHEN JUFANG (author) / ZHANG XIAOYOU (author)
2021-06-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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