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A platform for research: civil engineering, architecture and urbanism
Method for quickly treating soft construction surface of pile foundation in sandy soil area
The invention discloses a method for quickly treating a soft construction surface of a pile foundation in a sandy soil area. The working surface is in a foundation pit excavated in the sandy soil area. The method comprises the following steps that drainage ditches and guardrails are arranged on the periphery of the exterior of the foundation pit, a plurality of light well point dewatering wells used for blocking or reducing supply of underground water on the outer side of a site are drilled in the exterior of the foundation pit, and a plurality of light well point dewatering wells which are arranged in a longitudinal and transverse mode are drilled in the interior of the foundation pit; the multiple dewatering well pipes are lowered into the light well point dewatering wells outside the foundation pit and the light well point dewatering wells inside the foundation pit correspondingly, and the tops of the dewatering well pipes communicate with and are connected into a vacuum pump; and a simple observation well is arranged in the middle of a dewatering area, and after the water level is lowered to 1 meter, the foundation pit is rolled by an excavator until the ground surface of the foundation pit is free of water seepage and a soil layer is compacted. According to the method, the adverse effects of the underground high water level and the high stratum permeability of the construction site on the construction surface can be quickly solved at low cost, safe and smooth construction is guaranteed, and the positive effects on improving the construction efficiency and improving the engineering benefits are achieved.
本发明公开了快速处理砂土地区桩基软弱施工面方法，工作面为在砂土地区挖掘的基坑中，包括如下步骤：在基坑外部的四周设置排水沟以及护栏，并且在基坑外部钻设多个用于阻断或减少场地外侧地下水补给的轻型井点降水井，在基坑内部钻设多个呈纵横排列布置的轻型井点降水井；将多个降水井管分别下放至基坑外以及基坑内部的轻型井点降水井中，并且降水井管顶部连通接入真空泵；在降水区域中部设简易观察井，水位降升达到1米后，采用挖机对基坑进行碾压，直至基坑地表无渗水、土层压实。本发明能够快速、低成本的解决施工场地地下高水位、地层高渗透性对施工面的不利影响，保证施工安全顺利的进行，对提高施工效率和提高工程效益起到积极作用。
Method for quickly treating soft construction surface of pile foundation in sandy soil area
The invention discloses a method for quickly treating a soft construction surface of a pile foundation in a sandy soil area. The working surface is in a foundation pit excavated in the sandy soil area. The method comprises the following steps that drainage ditches and guardrails are arranged on the periphery of the exterior of the foundation pit, a plurality of light well point dewatering wells used for blocking or reducing supply of underground water on the outer side of a site are drilled in the exterior of the foundation pit, and a plurality of light well point dewatering wells which are arranged in a longitudinal and transverse mode are drilled in the interior of the foundation pit; the multiple dewatering well pipes are lowered into the light well point dewatering wells outside the foundation pit and the light well point dewatering wells inside the foundation pit correspondingly, and the tops of the dewatering well pipes communicate with and are connected into a vacuum pump; and a simple observation well is arranged in the middle of a dewatering area, and after the water level is lowered to 1 meter, the foundation pit is rolled by an excavator until the ground surface of the foundation pit is free of water seepage and a soil layer is compacted. According to the method, the adverse effects of the underground high water level and the high stratum permeability of the construction site on the construction surface can be quickly solved at low cost, safe and smooth construction is guaranteed, and the positive effects on improving the construction efficiency and improving the engineering benefits are achieved.
本发明公开了快速处理砂土地区桩基软弱施工面方法，工作面为在砂土地区挖掘的基坑中，包括如下步骤：在基坑外部的四周设置排水沟以及护栏，并且在基坑外部钻设多个用于阻断或减少场地外侧地下水补给的轻型井点降水井，在基坑内部钻设多个呈纵横排列布置的轻型井点降水井；将多个降水井管分别下放至基坑外以及基坑内部的轻型井点降水井中，并且降水井管顶部连通接入真空泵；在降水区域中部设简易观察井，水位降升达到1米后，采用挖机对基坑进行碾压，直至基坑地表无渗水、土层压实。本发明能够快速、低成本的解决施工场地地下高水位、地层高渗透性对施工面的不利影响，保证施工安全顺利的进行，对提高施工效率和提高工程效益起到积极作用。
Method for quickly treating soft construction surface of pile foundation in sandy soil area
快速处理砂土地区桩基软弱施工面方法
LU JIANSHU (author) / WANG TAO (author) / WANG YONGLIANG (author) / JIANG MINGJIE (author) / CAI NING (author)
2021-11-05
Patent
Electronic Resource
Chinese
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