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A platform for research: civil engineering, architecture and urbanism
Core-through hoisting construction method for small prefabricated box girder
The invention discloses a cross-core hoisting construction method for a small prefabricated box girder. The method comprises the following steps that 1, a pair of cross-core holes used for installing a hoisting tool is reserved in each of the two ends of a top plate of the small prefabricated box girder; 2, the lifting appliance comprises a fixed seat located on the top plate of the small box girder, a base plate located below the top plate, a lifting rod, nuts, a stress pin and a lifting belt, the lifting rod of the lifting appliance penetrates through the fixed seat, the center hole and the base plate, the nut is screwed at the upper end and the lower end of the lifting rod to fix the fixed seat on the top plate of the small box girder, and the lower end of the lifting belt is connected with the fixed seat through the stress pin; the upper end of the sling is connected with hoisting equipment; and 3, lifting the top plate of the small box girder to the required height by using hoisting equipment. According to the method, the through hole is formed in the top plate of the prefabricated small box girder, and a lifting appliance lifting rod penetrates through the hole for lifting during lifting, so that extrusion and friction of a steel wire rope to the side surface of the box girder in a traditional method are avoided, the risks of damage to the box girder and maintenance and replacement of the steel wire rope are reduced, and auxiliary equipment and manpower resources required during lifting are saved; and the construction cost and potential safety hazards are reduced.
本发明公开了一种预制小箱梁穿心式吊装施工方法，包括以下步骤：1、在预制小箱梁的顶板两端各预留一对用于安装吊具的穿心孔；2、所述吊具包括位于小箱梁顶板上面的固定座、位于顶板下面的垫板、吊杆、螺母、受力销、吊带，将吊具的吊杆穿过固定座、穿心孔和垫板，在吊杆的上下端用螺母拧紧将固定座固定在小箱梁的顶板上，吊带的下端通过受力销与固定座连接，吊带的上端与起重设备连接；3、使用起重设备将小箱梁顶板提升至所需高度。本发明通过在预制小箱梁顶板上设置穿心孔，在吊装时将吊具吊杆穿过孔内进行吊装，避免了传统方法中钢丝绳对箱梁侧面的挤压和摩擦，减少了箱梁损伤和钢丝绳维修更换的风险，节省了吊装时所需的辅助设备和人力资源，降低了施工成本和安全隐患。
Core-through hoisting construction method for small prefabricated box girder
The invention discloses a cross-core hoisting construction method for a small prefabricated box girder. The method comprises the following steps that 1, a pair of cross-core holes used for installing a hoisting tool is reserved in each of the two ends of a top plate of the small prefabricated box girder; 2, the lifting appliance comprises a fixed seat located on the top plate of the small box girder, a base plate located below the top plate, a lifting rod, nuts, a stress pin and a lifting belt, the lifting rod of the lifting appliance penetrates through the fixed seat, the center hole and the base plate, the nut is screwed at the upper end and the lower end of the lifting rod to fix the fixed seat on the top plate of the small box girder, and the lower end of the lifting belt is connected with the fixed seat through the stress pin; the upper end of the sling is connected with hoisting equipment; and 3, lifting the top plate of the small box girder to the required height by using hoisting equipment. According to the method, the through hole is formed in the top plate of the prefabricated small box girder, and a lifting appliance lifting rod penetrates through the hole for lifting during lifting, so that extrusion and friction of a steel wire rope to the side surface of the box girder in a traditional method are avoided, the risks of damage to the box girder and maintenance and replacement of the steel wire rope are reduced, and auxiliary equipment and manpower resources required during lifting are saved; and the construction cost and potential safety hazards are reduced.
本发明公开了一种预制小箱梁穿心式吊装施工方法，包括以下步骤：1、在预制小箱梁的顶板两端各预留一对用于安装吊具的穿心孔；2、所述吊具包括位于小箱梁顶板上面的固定座、位于顶板下面的垫板、吊杆、螺母、受力销、吊带，将吊具的吊杆穿过固定座、穿心孔和垫板，在吊杆的上下端用螺母拧紧将固定座固定在小箱梁的顶板上，吊带的下端通过受力销与固定座连接，吊带的上端与起重设备连接；3、使用起重设备将小箱梁顶板提升至所需高度。本发明通过在预制小箱梁顶板上设置穿心孔，在吊装时将吊具吊杆穿过孔内进行吊装，避免了传统方法中钢丝绳对箱梁侧面的挤压和摩擦，减少了箱梁损伤和钢丝绳维修更换的风险，节省了吊装时所需的辅助设备和人力资源，降低了施工成本和安全隐患。
Core-through hoisting construction method for small prefabricated box girder
一种预制小箱梁穿心式吊装施工方法
ZHOU SHENGLI (author) / ZHOU BIN (author) / YU WEI (author) / CAO FENG (author) / HUAN QICHAO (author) / ZENG MEIRONG (author)
2023-07-18
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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