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A platform for research: civil engineering, architecture and urbanism
Pipeline deep foundation pit support construction method
The invention discloses a pipeline deep foundation pit support construction method. The method includes the steps: performing localization to obtain the coordinates of excavation connection points ofpipelines needing to be connected, determining the positions of a foundation pit and steel sheet piles, and then carrying out surveying and setting out at the positions of the foundation pit and the steel sheet piles; carrying out first water lowering, wherein the water level is lowered to be below the bottom of a heavy excavation groove through water lowering pipes on the outer side of the foundation pit; carrying out heavy excavation slope settling and steel sheet pile driving construction, and carrying out second water lowering, wherein the water level is lowered to be below the bottom of the foundation pit through the water lowering pipes; and carrying out earth excavation in a cofferdam defined by the steel sheet piles, and carrying out butt-joint connection of the pipelines after excavation of the foundation pit is completed. The method effectively solves the technical problems of pipeline foundation pit support construction through the steel sheet piles in a high-water-level quicksand layer, has high pertinence, operability and safety performance, reduces construction risks, and has low construction costs.
本发明公开了一种管道深基坑支护施工方法，包括：定位需要连接管道的开挖连接点坐标，确定基坑及钢板桩的位置，然后进行基坑及钢板桩位置的测量放线；第一次降水，在基坑外侧采用降水管井将水位降低至大开挖槽底以下；大开挖放坡和钢板桩打桩施工，进行第二次降水，采用降水管井将水位降低至基坑底部以下；钢板桩围成的围堰内土方开挖，待基坑挖掘完成后进行管道的对接。本发明有效解决了钢板桩在水位较高流砂层管道基坑支护施工的技术难题，针对性强，可操作性强，安全性能高，降低了施工风险，施工成本低。
Pipeline deep foundation pit support construction method
The invention discloses a pipeline deep foundation pit support construction method. The method includes the steps: performing localization to obtain the coordinates of excavation connection points ofpipelines needing to be connected, determining the positions of a foundation pit and steel sheet piles, and then carrying out surveying and setting out at the positions of the foundation pit and the steel sheet piles; carrying out first water lowering, wherein the water level is lowered to be below the bottom of a heavy excavation groove through water lowering pipes on the outer side of the foundation pit; carrying out heavy excavation slope settling and steel sheet pile driving construction, and carrying out second water lowering, wherein the water level is lowered to be below the bottom of the foundation pit through the water lowering pipes; and carrying out earth excavation in a cofferdam defined by the steel sheet piles, and carrying out butt-joint connection of the pipelines after excavation of the foundation pit is completed. The method effectively solves the technical problems of pipeline foundation pit support construction through the steel sheet piles in a high-water-level quicksand layer, has high pertinence, operability and safety performance, reduces construction risks, and has low construction costs.
本发明公开了一种管道深基坑支护施工方法，包括：定位需要连接管道的开挖连接点坐标，确定基坑及钢板桩的位置，然后进行基坑及钢板桩位置的测量放线；第一次降水，在基坑外侧采用降水管井将水位降低至大开挖槽底以下；大开挖放坡和钢板桩打桩施工，进行第二次降水，采用降水管井将水位降低至基坑底部以下；钢板桩围成的围堰内土方开挖，待基坑挖掘完成后进行管道的对接。本发明有效解决了钢板桩在水位较高流砂层管道基坑支护施工的技术难题，针对性强，可操作性强，安全性能高，降低了施工风险，施工成本低。
Pipeline deep foundation pit support construction method
管道深基坑支护施工方法
ZHAO YUYING (author) / MIAO JUNTING (author) / RU GUOZHONG (author)
2020-10-09
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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