A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground engineering open excavation lateral extension construction method
The invention relates to an underground engineering open excavation lateral extension construction method. The method comprises the following steps that the height H of an existing structure is obtained; when H is smaller than or equal to 3 m, sloping unloading is conducted on covering soil on the existing structure, a foundation pit enclosure structure is constructed, grouting reinforcement is conducted on a soil body on the excavation side of the foundation pit, isolation piles are constructed on the excavation side of the existing structure, the foundation pit is excavated, a newly-built structure is constructed after excavation is completed, and connection construction of the newly-built structure and the existing structure is completed; when H is greater than 3m, constructing an enclosure structure of the foundation pit to be excavated, grouting and reinforcing a soil body on one side, far away from the existing structure, of the foundation pit, constructing an isolation pile on one side, far away from the newly-built structure, of the existing structure, excavating the foundation pit, and grouting and jacking a soil body below the existing structure after excavation is completed; according to the construction method disclosed by the invention, the problem of lateral extension construction of the existing structure under different conditions can be solved according to local conditions.
本发明涉及一种地下工程明挖侧向扩建施工方法，包括以下步骤：获取既有结构的自身高度H；当H≤3m时，对既有结构上覆土进行放坡卸载，施工基坑围护结构，对基坑开挖侧土体进行注浆加固，在既有结构开挖侧施工隔离桩，对基坑进行开挖，开挖完成后施工新建结构并完成新建结构与既有结构的接驳施工；当H＞3m时，施工待开挖基坑的围护结构，对基坑远离既有结构的一侧土体进行注浆加固，在既有结构远离新建结构的一侧施工隔离桩，对基坑开挖，开挖完成后对既有结构下方土体进行注浆顶升，对新建结构进行施工并完成新建结构和既有结构的接驳施工，本发明的施工方法能够因地制宜地解决不同条件下既有结构侧向拓建施工问题。
Underground engineering open excavation lateral extension construction method
The invention relates to an underground engineering open excavation lateral extension construction method. The method comprises the following steps that the height H of an existing structure is obtained; when H is smaller than or equal to 3 m, sloping unloading is conducted on covering soil on the existing structure, a foundation pit enclosure structure is constructed, grouting reinforcement is conducted on a soil body on the excavation side of the foundation pit, isolation piles are constructed on the excavation side of the existing structure, the foundation pit is excavated, a newly-built structure is constructed after excavation is completed, and connection construction of the newly-built structure and the existing structure is completed; when H is greater than 3m, constructing an enclosure structure of the foundation pit to be excavated, grouting and reinforcing a soil body on one side, far away from the existing structure, of the foundation pit, constructing an isolation pile on one side, far away from the newly-built structure, of the existing structure, excavating the foundation pit, and grouting and jacking a soil body below the existing structure after excavation is completed; according to the construction method disclosed by the invention, the problem of lateral extension construction of the existing structure under different conditions can be solved according to local conditions.
本发明涉及一种地下工程明挖侧向扩建施工方法，包括以下步骤：获取既有结构的自身高度H；当H≤3m时，对既有结构上覆土进行放坡卸载，施工基坑围护结构，对基坑开挖侧土体进行注浆加固，在既有结构开挖侧施工隔离桩，对基坑进行开挖，开挖完成后施工新建结构并完成新建结构与既有结构的接驳施工；当H＞3m时，施工待开挖基坑的围护结构，对基坑远离既有结构的一侧土体进行注浆加固，在既有结构远离新建结构的一侧施工隔离桩，对基坑开挖，开挖完成后对既有结构下方土体进行注浆顶升，对新建结构进行施工并完成新建结构和既有结构的接驳施工，本发明的施工方法能够因地制宜地解决不同条件下既有结构侧向拓建施工问题。
Underground engineering open excavation lateral extension construction method
一种地下工程明挖侧向扩建施工方法
WU SHENGZHI (author) / XING CHENG (author) / WANG GONGZE (author) / CHEN JIAN (author) / GUO JILONG (author) / CAI JINGMING (author) / LIN ZICHEN (author)
2024-10-29
Patent
Electronic Resource
Chinese
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