A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Segmented blasting demolition method for large bridge
The invention discloses a segmented blasting demolition method for a large bridge. The segmented blasting demolition method comprises the following steps: (1) removing auxiliary facilities of a bridge floor; 2) designing a plurality of groups of parallel blasting points on the bridge floor, and erecting a supporting platform in the middle of a blasting section; (3) drilling holes in the blasting points of the bridge floor, and filling the holes with water bags, explosives, water bags and static blasting agents in sequence; (4) performing blasting demolition on the bridge floor, and blasting the bridge floor into a plurality of sections; (5) conveying each section of bridge floor to a bridge head or a bridge tail, and carrying away by using a reloading vehicle; (6) dismantling the supporting platform and the platform on the upper portion of the pier, building a reinforcement cage outside the pier, and wrapping a steel wire mesh on the reinforcement cage; 7) drilling from the top of the bridge pier, and then filling a hole with a water bag, an explosive, a water bag and a static blasting agent in sequence; and 8) after blasting once, hoisting out the broken bridge pier, carrying away the broken bridge pier through a reloading vehicle, and blasting for multiple times until the whole bridge pier is dismantled. Compared with a traditional cutting and dismantling mode, the method has the advantages that the efficiency is high, manpower is saved, and the construction cost is low.
本发明公开了一种大型桥梁的分段爆破拆除方法，包括以下步骤：1）拆除桥面的辅助设施；2）在桥面设计多组平行的爆破点，并在爆破段中部搭设支撑平台；3）在桥面爆破点进行钻孔，在孔内依次填装水包、炸药、水包、静态爆破剂；4）对桥面进行爆破拆除，将桥面爆破成若干段；5）将每段桥面输送至桥头或桥尾，利用重装车辆运走；6）拆除支撑平台和桥墩上部的平台，在桥墩外部搭建钢筋笼，并在钢筋笼外部包裹钢丝网；7）从桥墩顶部钻孔，然后在孔内依次填装水包、炸药、水包、静态爆破剂；8）爆破一次后，吊出断裂的桥墩，通过重装车辆运走，分多次爆破，直至将整个桥墩拆除。本发明相较传统切割拆除方式，效率高，节省人力，施工成本低。
Segmented blasting demolition method for large bridge
The invention discloses a segmented blasting demolition method for a large bridge. The segmented blasting demolition method comprises the following steps: (1) removing auxiliary facilities of a bridge floor; 2) designing a plurality of groups of parallel blasting points on the bridge floor, and erecting a supporting platform in the middle of a blasting section; (3) drilling holes in the blasting points of the bridge floor, and filling the holes with water bags, explosives, water bags and static blasting agents in sequence; (4) performing blasting demolition on the bridge floor, and blasting the bridge floor into a plurality of sections; (5) conveying each section of bridge floor to a bridge head or a bridge tail, and carrying away by using a reloading vehicle; (6) dismantling the supporting platform and the platform on the upper portion of the pier, building a reinforcement cage outside the pier, and wrapping a steel wire mesh on the reinforcement cage; 7) drilling from the top of the bridge pier, and then filling a hole with a water bag, an explosive, a water bag and a static blasting agent in sequence; and 8) after blasting once, hoisting out the broken bridge pier, carrying away the broken bridge pier through a reloading vehicle, and blasting for multiple times until the whole bridge pier is dismantled. Compared with a traditional cutting and dismantling mode, the method has the advantages that the efficiency is high, manpower is saved, and the construction cost is low.
本发明公开了一种大型桥梁的分段爆破拆除方法，包括以下步骤：1）拆除桥面的辅助设施；2）在桥面设计多组平行的爆破点，并在爆破段中部搭设支撑平台；3）在桥面爆破点进行钻孔，在孔内依次填装水包、炸药、水包、静态爆破剂；4）对桥面进行爆破拆除，将桥面爆破成若干段；5）将每段桥面输送至桥头或桥尾，利用重装车辆运走；6）拆除支撑平台和桥墩上部的平台，在桥墩外部搭建钢筋笼，并在钢筋笼外部包裹钢丝网；7）从桥墩顶部钻孔，然后在孔内依次填装水包、炸药、水包、静态爆破剂；8）爆破一次后，吊出断裂的桥墩，通过重装车辆运走，分多次爆破，直至将整个桥墩拆除。本发明相较传统切割拆除方式，效率高，节省人力，施工成本低。
Segmented blasting demolition method for large bridge
一种大型桥梁的分段爆破拆除方法
SU CHUNSHENG (author) / GUO JIANQIANG (author) / ZHAO HEMING (author) / HE SHIMEI (author) / RAO SHENGBIN (author) / QIAO SHUXUN (author) / LYU CHUNLEI (author) / DU CHANGSHENG (author) / JIANG XINHE (author) / LIN LIDONG (author)
2021-08-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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