A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a construction process of a large-span assembled steel-concrete combined simple-supported box girder, and relates to the technical field of bridges. The construction process comprises the steps of firstly, calculating a construction period, and compiling a construction progress plan; carrying out construction preparation, specifically, personnel, materials and machinery enter the construction site; carrying out lofting marking; manufacturing units; manufacturing a jig frame; installing a bottom die; assembling the box girder units in a combined mode; carrying out in-plant sectional pre-assembly; carrying out in-plant welding; carrying out weld seam flaw detection; coating a steel frame; and carrying out cushion block installation. The construction process of the large-span assembled steel-concrete combined simple-supported box girder has the advantages of simplifying construction procedures, reducing off-site operation and bracket construction, being high in mechanization degree, saving cost and shortening construction period, and solves the problems that the span of an existing assembled prestressed concrete bridge cannot meet the span requirement, a temporary bracket cannot be erected by adopting a traditional laminated beam, and the cost of a whole steel beam is high, so that the construction difficulty, the cost and the risk are 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。
The invention discloses a construction process of a large-span assembled steel-concrete combined simple-supported box girder, and relates to the technical field of bridges. The construction process comprises the steps of firstly, calculating a construction period, and compiling a construction progress plan; carrying out construction preparation, specifically, personnel, materials and machinery enter the construction site; carrying out lofting marking; manufacturing units; manufacturing a jig frame; installing a bottom die; assembling the box girder units in a combined mode; carrying out in-plant sectional pre-assembly; carrying out in-plant welding; carrying out weld seam flaw detection; coating a steel frame; and carrying out cushion block installation. The construction process of the large-span assembled steel-concrete combined simple-supported box girder has the advantages of simplifying construction procedures, reducing off-site operation and bracket construction, being high in mechanization degree, saving cost and shortening construction period, and solves the problems that the span of an existing assembled prestressed concrete bridge cannot meet the span requirement, a temporary bracket cannot be erected by adopting a traditional laminated beam, and the cost of a whole steel beam is high, so that the construction difficulty, the cost and the risk are 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 assembled steel-concrete combined simple-supported box girder
一种大跨径装配式钢混组合简支箱梁施工工艺
ZHOU LI (author)
2020-08-07
Patent
Electronic Resource
Chinese
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