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A platform for research: civil engineering, architecture and urbanism
Construction method of tension-compression support light cofferdam
The invention discloses a tension-compression support light cofferdam construction method, and relates to the field of foundation pit construction, and the technical scheme is that the construction method comprises the following steps: S1, an excavation area of a foundation pit is calibrated in a construction area, and a plurality of steel casings are pre-buried in the excavation area; s2, steel pipe piles are embedded in the trend of the boundary line of the excavation area; s3, a foundation pit is excavated, and when the position 0.5 m below the designed elevation of a second support is excavated, a first enclosing purlin is installed on the outer side of the steel pipe pile; s4, pull supports are installed on the multiple steel casings along the boundary line of the excavation area; s5, mounting a second support; s6, when the cofferdam is excavated to be 0.5 m below the designed elevation of the pressing support, enclosing purlins are installed on the inner sides of the steel pipe piles at the designed positions; s7, pressing supports are installed on the multiple steel casings along the boundary line of the excavation area; and S8, after bottom sealing concrete pouring is completed, the pulling and pressing supports are dismantled. The method has the beneficial effects that the situation that a welding mode is used for solving the pulling force problem, stress concentration is caused by large foundation pit deformation, and cofferdam instability is caused is avoided.
本发明公开了一种拉压支座轻型围堰施工方法，涉及基坑施工领域，技术方案为，包括以下步骤：S1、在施工区域内标定出基坑的开挖区域，并在开挖区域内预先埋入若干个钢护筒；S2、沿开挖区域的边界线走向埋入钢管桩；S3、基坑开挖，当挖到第二道支撑设计标高以下0.5m时，在钢管桩的外侧安装第一道围檩；S4、沿开挖区域边界线的若干个钢护筒上安装拉支座；S5、安装第二道支撑；S6、围堰开挖到压支座设计标高以下0.5m时，在设计位置钢管桩内侧安装围檩；S7、沿开挖区域边界线的若干个钢护筒上安装压支座；S8、待封底混凝土浇筑完成拆除拉、压支座。本发明的有益效果是：避免了使用焊接方式解决拉力问题，因基坑变形大，导致应力集中，造成围堰失稳。
Construction method of tension-compression support light cofferdam
The invention discloses a tension-compression support light cofferdam construction method, and relates to the field of foundation pit construction, and the technical scheme is that the construction method comprises the following steps: S1, an excavation area of a foundation pit is calibrated in a construction area, and a plurality of steel casings are pre-buried in the excavation area; s2, steel pipe piles are embedded in the trend of the boundary line of the excavation area; s3, a foundation pit is excavated, and when the position 0.5 m below the designed elevation of a second support is excavated, a first enclosing purlin is installed on the outer side of the steel pipe pile; s4, pull supports are installed on the multiple steel casings along the boundary line of the excavation area; s5, mounting a second support; s6, when the cofferdam is excavated to be 0.5 m below the designed elevation of the pressing support, enclosing purlins are installed on the inner sides of the steel pipe piles at the designed positions; s7, pressing supports are installed on the multiple steel casings along the boundary line of the excavation area; and S8, after bottom sealing concrete pouring is completed, the pulling and pressing supports are dismantled. The method has the beneficial effects that the situation that a welding mode is used for solving the pulling force problem, stress concentration is caused by large foundation pit deformation, and cofferdam instability is caused is avoided.
本发明公开了一种拉压支座轻型围堰施工方法，涉及基坑施工领域，技术方案为，包括以下步骤：S1、在施工区域内标定出基坑的开挖区域，并在开挖区域内预先埋入若干个钢护筒；S2、沿开挖区域的边界线走向埋入钢管桩；S3、基坑开挖，当挖到第二道支撑设计标高以下0.5m时，在钢管桩的外侧安装第一道围檩；S4、沿开挖区域边界线的若干个钢护筒上安装拉支座；S5、安装第二道支撑；S6、围堰开挖到压支座设计标高以下0.5m时，在设计位置钢管桩内侧安装围檩；S7、沿开挖区域边界线的若干个钢护筒上安装压支座；S8、待封底混凝土浇筑完成拆除拉、压支座。本发明的有益效果是：避免了使用焊接方式解决拉力问题，因基坑变形大，导致应力集中，造成围堰失稳。
Construction method of tension-compression support light cofferdam
一种拉压支座轻型围堰施工方法
LIU WEI (author) / HU FENG (author) / CUI YANJI (author) / YANG SHUAI (author) / LU KAI (author) / DUAN JIWEI (author) / YANG GUANGTING (author) / WEN XIAOKANG (author) / WANG MINMIN (author) / GAI ZHONG (author)
2023-04-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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