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A platform for research: civil engineering, architecture and urbanism
Construction method of open caisson close to wetland
The invention provides a construction method of an open caisson close to a wetland, and relates to the technical field of hydraulic engineering construction.The method comprises the following steps that S1, after a construction site is leveled, a foundation pit is excavated, and a cushion layer is laid; s2, well body manufacturing is conducted on the cushion layer, and after the strength of the first section of open caisson well body is qualified, open caisson construction is prepared; s3, open caisson construction is conducted, excavation and sinking are conducted layer by layer during construction from the center to the periphery, the well bottom is in a pot bottom shape, then a well body sinks, circulation is conducted till the well body sinks to the position 1 m of the designed elevation, and finally excavation is replaced by flushing of a high-pressure water gun for a soil layer 1 m; and S4, after the open caisson sinks to the designed elevation, plain concrete is used for bottom sealing construction. According to the open caisson construction method, the blade foot drainage method is adopted for open caisson construction, and the problems that when the open caisson near the wetland is constructed, a well body inclines and floats upwards, and the nearby ground surface settles are solved by controlling the sinking speed of the open caisson, excavating the bottom of the open caisson and the like.
本发明提供一种临近湿地的沉井施工方法，涉及水利工程施工技术领域，该方法包括如下步骤：S1、对施工场地进行平整后，开挖基坑，并铺筑垫层；S2、在垫层上进行井身制作，第一节沉井井身强度合格后，准备进行沉井施工；S3、进行沉井施工，施工时分层逐层开挖下沉，从中心向四周进行，使井底呈锅底形，然后使井身下沉，如此循环直到井身下沉至设计标高1m处，最后1m土层用高压水枪冲刷代替开挖；S4、沉井下沉至设计标高后，使用素混凝土封底施工。本发明采用刃脚排水法进行沉井施工，通过控制沉井下沉速度、锅底开挖等手段，解决了湿地附近沉井施工时容易发生井身倾斜、上浮、附近地表沉降等问题。
Construction method of open caisson close to wetland
The invention provides a construction method of an open caisson close to a wetland, and relates to the technical field of hydraulic engineering construction.The method comprises the following steps that S1, after a construction site is leveled, a foundation pit is excavated, and a cushion layer is laid; s2, well body manufacturing is conducted on the cushion layer, and after the strength of the first section of open caisson well body is qualified, open caisson construction is prepared; s3, open caisson construction is conducted, excavation and sinking are conducted layer by layer during construction from the center to the periphery, the well bottom is in a pot bottom shape, then a well body sinks, circulation is conducted till the well body sinks to the position 1 m of the designed elevation, and finally excavation is replaced by flushing of a high-pressure water gun for a soil layer 1 m; and S4, after the open caisson sinks to the designed elevation, plain concrete is used for bottom sealing construction. According to the open caisson construction method, the blade foot drainage method is adopted for open caisson construction, and the problems that when the open caisson near the wetland is constructed, a well body inclines and floats upwards, and the nearby ground surface settles are solved by controlling the sinking speed of the open caisson, excavating the bottom of the open caisson and the like.
本发明提供一种临近湿地的沉井施工方法，涉及水利工程施工技术领域，该方法包括如下步骤：S1、对施工场地进行平整后，开挖基坑，并铺筑垫层；S2、在垫层上进行井身制作，第一节沉井井身强度合格后，准备进行沉井施工；S3、进行沉井施工，施工时分层逐层开挖下沉，从中心向四周进行，使井底呈锅底形，然后使井身下沉，如此循环直到井身下沉至设计标高1m处，最后1m土层用高压水枪冲刷代替开挖；S4、沉井下沉至设计标高后，使用素混凝土封底施工。本发明采用刃脚排水法进行沉井施工，通过控制沉井下沉速度、锅底开挖等手段，解决了湿地附近沉井施工时容易发生井身倾斜、上浮、附近地表沉降等问题。
Construction method of open caisson close to wetland
一种临近湿地的沉井施工方法
ZHANG XINYI (author) / WEI JIE (author) / LANG YI (author) / ZHENG GUANGCAN (author) / LI HANWEN (author) / HONG JUNFENG (author) / YU SHIXIANG (author)
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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