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A platform for research: civil engineering, architecture and urbanism
Construction method for dismantling large-span pre-stressed cast-in-place box girder
The invention relates to a construction method for dismantling a large-span pre-stressed cast-in-place box girder, which comprises the following steps: S1, dismantling an accessory structure, and dismantling bridge deck pavement and traffic facilities on a box girder; S2, cutting an expansion joint, breaking concrete at the expansion joint of the box girder, and cutting off connecting steel bars, angle steel and bolts at the expansion joint; S3, cutting the box girder, firstly, adopting a disk lock scaffold for building a dismantling scaffold which tightly abuts against the bottom plate of the concrete box girder and the wing plates on both sides, and cutting the box girder by adopting a diamond wire saw, wherein the dismantling sequence of the box girder is as follows: symmetrically cutting wing plates on two sides, releasing web steel strands, cutting a left web, cutting a box type top plate, cutting a right web and cutting a box chamber bottom plate; and S4, hoisting and dismantling the beam blocks, and specifically, transferring and abandoning the cut beam blocks to a designated place through hoisting equipment. The construction method has the effect of safely and rapidly dismantling the large-span pre-stressed cast-in-place box girder.
本申请涉及一种用于大跨预应力现浇箱梁拆除施工方法，其包括以下步骤，S1、附属结构拆除，拆除箱梁上桥面铺装和交通设施；S2、伸缩缝切割，将箱梁伸缩缝处的混凝土破除，并割断伸缩缝处的连接钢筋、角钢和螺栓；S3、箱梁切割，首先采用盘扣支架搭设拆除支架，架体将混凝土箱梁箱体底板及两侧翼板顶实；采用金刚石绳锯切割箱梁；其中箱梁的拆除顺序为：两侧翼板对称切割、腹板钢绞线放张、左侧腹板切割、箱式顶板切割、右侧腹板切割、箱室底板切割；S4、吊拆梁块，采用吊装设备将切割的梁块运弃至指定地点。本申请具有对大跨预应力现浇箱梁进行安全快速的拆除的效果。
Construction method for dismantling large-span pre-stressed cast-in-place box girder
The invention relates to a construction method for dismantling a large-span pre-stressed cast-in-place box girder, which comprises the following steps: S1, dismantling an accessory structure, and dismantling bridge deck pavement and traffic facilities on a box girder; S2, cutting an expansion joint, breaking concrete at the expansion joint of the box girder, and cutting off connecting steel bars, angle steel and bolts at the expansion joint; S3, cutting the box girder, firstly, adopting a disk lock scaffold for building a dismantling scaffold which tightly abuts against the bottom plate of the concrete box girder and the wing plates on both sides, and cutting the box girder by adopting a diamond wire saw, wherein the dismantling sequence of the box girder is as follows: symmetrically cutting wing plates on two sides, releasing web steel strands, cutting a left web, cutting a box type top plate, cutting a right web and cutting a box chamber bottom plate; and S4, hoisting and dismantling the beam blocks, and specifically, transferring and abandoning the cut beam blocks to a designated place through hoisting equipment. The construction method has the effect of safely and rapidly dismantling the large-span pre-stressed cast-in-place box girder.
本申请涉及一种用于大跨预应力现浇箱梁拆除施工方法，其包括以下步骤，S1、附属结构拆除，拆除箱梁上桥面铺装和交通设施；S2、伸缩缝切割，将箱梁伸缩缝处的混凝土破除，并割断伸缩缝处的连接钢筋、角钢和螺栓；S3、箱梁切割，首先采用盘扣支架搭设拆除支架，架体将混凝土箱梁箱体底板及两侧翼板顶实；采用金刚石绳锯切割箱梁；其中箱梁的拆除顺序为：两侧翼板对称切割、腹板钢绞线放张、左侧腹板切割、箱式顶板切割、右侧腹板切割、箱室底板切割；S4、吊拆梁块，采用吊装设备将切割的梁块运弃至指定地点。本申请具有对大跨预应力现浇箱梁进行安全快速的拆除的效果。
Construction method for dismantling large-span pre-stressed cast-in-place box girder
一种用于大跨预应力现浇箱梁拆除施工方法
ZHANG PENG (author) / ZHOU YANG (author) / SUN QIANG (author) / MA SHAOJUN (author) / JIN LIJUN (author) / GAO MINGSHENG (author) / WU JINKE (author) / WANG PENG (author) / ZHANG WEI (author) / TANG MING (author)
2021-08-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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