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A platform for research: civil engineering, architecture and urbanism
Forward and reverse combined complex deep and large foundation pit earth excavation organization construction method
The invention provides a forward and reverse combined complex deep and large foundation pit earth excavation organization construction method. The method comprises the steps that an unearthed trestle is deepened in design; constructing a waterproof curtain and a support pile; one-column one-pile construction and vertical column pile construction are carried out; constructing a precipitation well; earth excavation and cushion layer pouring are conducted; constructing an inner support; a water stop steel plate and a closing net are arranged; closing the dewatering well; and after the bottom plate is constructed, the hole is closed. In the foundation pit stage, an original one-column-one-pile structure is fully used as a vertical stress component of the integrated plate, a pile-wall integrated supporting pile is used as a horizontal supporting structure of the foundation pit, the integrated plate in the reverse construction area is used as horizontal restraining and supporting, all the structures are permanent structures and free of dismantling, and resource waste is reduced; the lower foundation pit trestle is reasonably arranged to serve as a channel for outward transportation of foundation pit earthwork in a foundation pit sequential construction area in combination with working conditions, a loop is formed by the lower foundation pit trestle and a road outside the foundation pit, the defect that an original long-arm excavator or a crane for a deep foundation pit is low in efficiency is overcome, the construction period is shortened, and implementation of the complex deep and large foundation pit and efficient outward transportation of earthwork are achieved.
本发明提供一种顺逆结合复杂深大基坑土方开挖组织施工方法，包括：出土栈桥设计深化；止水帷幕和支护桩施工；一柱一桩和立柱桩施工；降水井施工；土方开挖及垫层浇筑；内支撑施工；止水钢板、收口网设置；降水井封井；底板施工完后顺做洞口封闭。本发明在基坑阶段充分利用原有一柱一桩作为一体化板的竖向受力构件，桩墙合一支护桩作为基坑水平方向支挡结构，逆做区域一体化板作为水平约束和支撑，都是永久结构免拆除，减少了资源浪费；在基坑顺做区域结合工况条件，合理设置下基坑栈桥作为基坑土方外运的通道，与基坑外道路形成环路，改善了原有的深基坑用长臂挖机或者克令吊低效的弊端，有利于缩短工期、实现复杂深大基坑实施和土方高效外运。
Forward and reverse combined complex deep and large foundation pit earth excavation organization construction method
The invention provides a forward and reverse combined complex deep and large foundation pit earth excavation organization construction method. The method comprises the steps that an unearthed trestle is deepened in design; constructing a waterproof curtain and a support pile; one-column one-pile construction and vertical column pile construction are carried out; constructing a precipitation well; earth excavation and cushion layer pouring are conducted; constructing an inner support; a water stop steel plate and a closing net are arranged; closing the dewatering well; and after the bottom plate is constructed, the hole is closed. In the foundation pit stage, an original one-column-one-pile structure is fully used as a vertical stress component of the integrated plate, a pile-wall integrated supporting pile is used as a horizontal supporting structure of the foundation pit, the integrated plate in the reverse construction area is used as horizontal restraining and supporting, all the structures are permanent structures and free of dismantling, and resource waste is reduced; the lower foundation pit trestle is reasonably arranged to serve as a channel for outward transportation of foundation pit earthwork in a foundation pit sequential construction area in combination with working conditions, a loop is formed by the lower foundation pit trestle and a road outside the foundation pit, the defect that an original long-arm excavator or a crane for a deep foundation pit is low in efficiency is overcome, the construction period is shortened, and implementation of the complex deep and large foundation pit and efficient outward transportation of earthwork are achieved.
本发明提供一种顺逆结合复杂深大基坑土方开挖组织施工方法，包括：出土栈桥设计深化；止水帷幕和支护桩施工；一柱一桩和立柱桩施工；降水井施工；土方开挖及垫层浇筑；内支撑施工；止水钢板、收口网设置；降水井封井；底板施工完后顺做洞口封闭。本发明在基坑阶段充分利用原有一柱一桩作为一体化板的竖向受力构件，桩墙合一支护桩作为基坑水平方向支挡结构，逆做区域一体化板作为水平约束和支撑，都是永久结构免拆除，减少了资源浪费；在基坑顺做区域结合工况条件，合理设置下基坑栈桥作为基坑土方外运的通道，与基坑外道路形成环路，改善了原有的深基坑用长臂挖机或者克令吊低效的弊端，有利于缩短工期、实现复杂深大基坑实施和土方高效外运。
Forward and reverse combined complex deep and large foundation pit earth excavation organization construction method
一种顺逆结合复杂深大基坑土方开挖组织施工方法
SUN YONGWANG (author) / JIANG LEI (author) / MA HUAIZHANG (author) / ZHAO ZHITAO (author) / WANG ZHENGFEI (author) / KONG LINGWEN (author) / XU YIXUAN (author) / GAO XIAO (author) / YANG FAN (author) / YU KAI (author)
2024-08-23
Patent
Electronic Resource
Chinese
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