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A platform for research: civil engineering, architecture and urbanism
Construction method for dismantling precast beam old bridge
The invention relates to the field of bridge demolition, in particular to a construction method for dismantling a precast beam old bridge, comprising the following steps: S1, traffic control is performed; S2, anti-collision isolation measures are set; S3, the anti-collision wall is dismantled; S4, the beam body is divided: according to an old bridge drawing, hoisting holes of which the diameters are not less than 150mm on wing plates are drilled on two sides of a web at a 1/4 position and a 3/4 position in the length direction of each beam along the wet joint through a drilling machine, a cutting line is drawn along a central line of the wet joint, and the beam body is divided along the cutting line to form independent beam sections; S5, beam section hoisting and moving, wherein old bridge sections are hoisted and moved span by span and piece by piece till the half range of the full bridge is dismantled; S6, traffic control is adjusted, the steps S2 to S5 are repeated, and dismantling of the remaining half old bridge plate is completed in a span-by-span mode; S7, a bent cap is dismantled; and S8, a pier column is dismantled. Under the condition that main line traffic is not interrupted, according to the structural characteristics of the old precast beam bridge, the steps of drilling hoisting holes in advance, scribing, segmenting piece by piece, hoisting away, crushing and completing dismantling span by span are adopted, and the existing old precast beam bridge is safely and rapidly dismantled.
本发明涉及桥梁拆除领域，特别涉及一种拆除预制梁旧桥的施工方法，包括如下步骤：S1：交通管制；S2：设置防撞隔离措施；S3：拆除防撞墙；S4:分割梁体：根据旧桥图纸，在每片梁长度方向的1/4处和3/4处的腹板两侧的翼板上，通过钻孔机，沿湿接缝钻直径不小于150mm的吊装孔，沿湿接缝中心线划切割线，沿切割线分割梁体，形成独立的梁段；S5：吊移梁段：逐跨逐片吊移旧桥梁段，直至拆除全桥半幅；S6：调整交通管制，重复S2‑S5，逐跨完成剩余半幅旧桥梁板的拆除；S7：拆除盖梁；S8：拆除墩柱。实现在不中断主线交通的情况下，针对预制梁旧桥的结构特征，采用预先钻吊装孔，划线后，进行逐片分割、吊离、破碎，逐跨完成拆除的步骤，安全、快速的拆除现有预制梁旧桥。
Construction method for dismantling precast beam old bridge
The invention relates to the field of bridge demolition, in particular to a construction method for dismantling a precast beam old bridge, comprising the following steps: S1, traffic control is performed; S2, anti-collision isolation measures are set; S3, the anti-collision wall is dismantled; S4, the beam body is divided: according to an old bridge drawing, hoisting holes of which the diameters are not less than 150mm on wing plates are drilled on two sides of a web at a 1/4 position and a 3/4 position in the length direction of each beam along the wet joint through a drilling machine, a cutting line is drawn along a central line of the wet joint, and the beam body is divided along the cutting line to form independent beam sections; S5, beam section hoisting and moving, wherein old bridge sections are hoisted and moved span by span and piece by piece till the half range of the full bridge is dismantled; S6, traffic control is adjusted, the steps S2 to S5 are repeated, and dismantling of the remaining half old bridge plate is completed in a span-by-span mode; S7, a bent cap is dismantled; and S8, a pier column is dismantled. Under the condition that main line traffic is not interrupted, according to the structural characteristics of the old precast beam bridge, the steps of drilling hoisting holes in advance, scribing, segmenting piece by piece, hoisting away, crushing and completing dismantling span by span are adopted, and the existing old precast beam bridge is safely and rapidly dismantled.
本发明涉及桥梁拆除领域，特别涉及一种拆除预制梁旧桥的施工方法，包括如下步骤：S1：交通管制；S2：设置防撞隔离措施；S3：拆除防撞墙；S4:分割梁体：根据旧桥图纸，在每片梁长度方向的1/4处和3/4处的腹板两侧的翼板上，通过钻孔机，沿湿接缝钻直径不小于150mm的吊装孔，沿湿接缝中心线划切割线，沿切割线分割梁体，形成独立的梁段；S5：吊移梁段：逐跨逐片吊移旧桥梁段，直至拆除全桥半幅；S6：调整交通管制，重复S2‑S5，逐跨完成剩余半幅旧桥梁板的拆除；S7：拆除盖梁；S8：拆除墩柱。实现在不中断主线交通的情况下，针对预制梁旧桥的结构特征，采用预先钻吊装孔，划线后，进行逐片分割、吊离、破碎，逐跨完成拆除的步骤，安全、快速的拆除现有预制梁旧桥。
Construction method for dismantling precast beam old bridge
一种拆除预制梁旧桥的施工方法
LIN WEN (author) / WANG ZHENQI (author) / LIU ZHENGYU (author) / PAN BANGQUN (author) / ZOU MU'EN (author) / CAO YANG (author) / ZHOU YULIAN (author) / LI JIAZHU (author) / SU QIANG (author)
2022-02-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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