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A platform for research: civil engineering, architecture and urbanism
Construction method of foundation pit close to subway tunnel
The invention relates to a construction method of a foundation pit close to a subway tunnel, which comprises the following steps of: 1, partitioning the foundation pit, dividing the side far away from a subway into a plurality of large partitions, and dividing the side close to the subway into a plurality of small partitions; underground diaphragm walls, engineering piles and trestle stand column piles on the periphery and in stages are constructed; 2, excavating a first layer of earth; 3, one large subarea close to the subway is excavated downwards till a foundation slab is completed; 4, the basement structure of the large partition is constructed back to the portion, close to one side of the small partition, of the underground first-layer structural beam plate; the adjacent small partitions are excavated downwards until the foundation slab is completed; step 5, completing the beam slab of the underground first-layer structure of the large subarea, and dismantling a second concrete support; underground first-layer structural beam plates are constructed in the small partitions; and 6, the first supporting trestles of the large subarea and the small subarea are synchronously dismantled, and synchronous construction is conducted till the basement roof structure is completed. Jumping pit excavation is adopted, small partition excavation intervenes in advance, and the construction speed is increased.
本发明涉及一种临近地铁隧道的基坑施工方法，包括：步骤1：对基坑进行分区，远离地铁侧划分为若干个大分区，靠近地铁侧划分为若干个小分区；施工四周和分期地下连续墙、工程桩及栈桥立柱桩；步骤2：首层土方开挖；步骤3：将靠近地铁的其中一个大分区向下开挖，直至基础底板完成；步骤4：将该大分区的地下室结构回筑至地下一层结构梁板临近小分区一侧的部分完成；向下开挖相邻小分区，直至基础底板完成；步骤5：将该大分区地下一层结构梁板完成，拆除第二道混凝土支撑；小分区施工地下一层结构梁板；步骤6：将大分区和小分区的首道支撑栈桥同步拆除，同步施工至地下室顶板结构完成。本发明采用跳坑开挖，小分区开挖提前介入，加快施工速度。
Construction method of foundation pit close to subway tunnel
The invention relates to a construction method of a foundation pit close to a subway tunnel, which comprises the following steps of: 1, partitioning the foundation pit, dividing the side far away from a subway into a plurality of large partitions, and dividing the side close to the subway into a plurality of small partitions; underground diaphragm walls, engineering piles and trestle stand column piles on the periphery and in stages are constructed; 2, excavating a first layer of earth; 3, one large subarea close to the subway is excavated downwards till a foundation slab is completed; 4, the basement structure of the large partition is constructed back to the portion, close to one side of the small partition, of the underground first-layer structural beam plate; the adjacent small partitions are excavated downwards until the foundation slab is completed; step 5, completing the beam slab of the underground first-layer structure of the large subarea, and dismantling a second concrete support; underground first-layer structural beam plates are constructed in the small partitions; and 6, the first supporting trestles of the large subarea and the small subarea are synchronously dismantled, and synchronous construction is conducted till the basement roof structure is completed. Jumping pit excavation is adopted, small partition excavation intervenes in advance, and the construction speed is increased.
本发明涉及一种临近地铁隧道的基坑施工方法，包括：步骤1：对基坑进行分区，远离地铁侧划分为若干个大分区，靠近地铁侧划分为若干个小分区；施工四周和分期地下连续墙、工程桩及栈桥立柱桩；步骤2：首层土方开挖；步骤3：将靠近地铁的其中一个大分区向下开挖，直至基础底板完成；步骤4：将该大分区的地下室结构回筑至地下一层结构梁板临近小分区一侧的部分完成；向下开挖相邻小分区，直至基础底板完成；步骤5：将该大分区地下一层结构梁板完成，拆除第二道混凝土支撑；小分区施工地下一层结构梁板；步骤6：将大分区和小分区的首道支撑栈桥同步拆除，同步施工至地下室顶板结构完成。本发明采用跳坑开挖，小分区开挖提前介入，加快施工速度。
Construction method of foundation pit close to subway tunnel
一种临近地铁隧道的基坑施工方法
DING JIANLEI (author) / SHAO HAIFENG (author) / MAN HAIDA (author) / ZHU JUN (author) / QIAN YUSHENG (author) / WANG SHAOCHUN (author) / WANG XIAOKANG (author) / REN YIDONG (author)
2023-06-30
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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