A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for adding pile foundation after excavation of foundation pit
The invention relates to a construction method for adding a pile foundation after excavation of a foundation pit. The construction method comprises the following steps: 1, the position of the added pile foundation is determined according to the design requirement and the relative position relationship between the pile foundation and a constructed engineering pile or a stand column pile and an existing main body structure or a support; 2, a foundation pit is constructed to a raft according to the construction scheme, a corresponding pile casing is reserved for the newly-added pile foundation before the raft is constructed according to the position of the newly-added pile foundation, and a cover plate is arranged on the pile casing after the raft is constructed; 3, main body structures are built back according to the construction scheme, and corresponding holes are reserved above the position of the newly-added pile foundation before construction of each layer of main body structure; and 4, after the main body structures are built back and the first-layer structure meets the design strength requirement, the cover plate of the pile casing is taken down, the pile casing is lengthened to the position above the first-layer floor slab of the main body structures, and a newly-added pile foundation is constructed on the first-layer floor slab of the main body structures through piling equipment. By presetting the pile casing, it is ensured that the pile foundation is smoothly increased, and the construction safety is high.
本发明涉及一种基坑开挖后增加桩基的施工方法，包括如下步骤：步骤1：根据设计需求，及与已施工的工程桩或立柱桩、已有主体结构或支撑的相对位置关系，确定新增桩基的位置；步骤2：根据施工方案施工基坑至筏板，根据新增桩基的位置在所述筏板施工前为新增桩基预留相对应的护筒，在筏板施工后在所述护筒上设置盖板；步骤3：根据施工方案回筑主体结构，并在每一层主体结构施工前在新增桩基的位置的上方预留相对应的洞口；步骤4：当主体结构回筑完，且首层结构达到设计强度要求后，取下护筒的盖板，接长护筒至主体结构的首层楼板之上，利用打桩设备在主体结构的首层楼板上施工新增桩基。本发明通过预设护筒，确保桩基顺利增加，且施工安全性高。
Construction method for adding pile foundation after excavation of foundation pit
The invention relates to a construction method for adding a pile foundation after excavation of a foundation pit. The construction method comprises the following steps: 1, the position of the added pile foundation is determined according to the design requirement and the relative position relationship between the pile foundation and a constructed engineering pile or a stand column pile and an existing main body structure or a support; 2, a foundation pit is constructed to a raft according to the construction scheme, a corresponding pile casing is reserved for the newly-added pile foundation before the raft is constructed according to the position of the newly-added pile foundation, and a cover plate is arranged on the pile casing after the raft is constructed; 3, main body structures are built back according to the construction scheme, and corresponding holes are reserved above the position of the newly-added pile foundation before construction of each layer of main body structure; and 4, after the main body structures are built back and the first-layer structure meets the design strength requirement, the cover plate of the pile casing is taken down, the pile casing is lengthened to the position above the first-layer floor slab of the main body structures, and a newly-added pile foundation is constructed on the first-layer floor slab of the main body structures through piling equipment. By presetting the pile casing, it is ensured that the pile foundation is smoothly increased, and the construction safety is high.
本发明涉及一种基坑开挖后增加桩基的施工方法，包括如下步骤：步骤1：根据设计需求，及与已施工的工程桩或立柱桩、已有主体结构或支撑的相对位置关系，确定新增桩基的位置；步骤2：根据施工方案施工基坑至筏板，根据新增桩基的位置在所述筏板施工前为新增桩基预留相对应的护筒，在筏板施工后在所述护筒上设置盖板；步骤3：根据施工方案回筑主体结构，并在每一层主体结构施工前在新增桩基的位置的上方预留相对应的洞口；步骤4：当主体结构回筑完，且首层结构达到设计强度要求后，取下护筒的盖板，接长护筒至主体结构的首层楼板之上，利用打桩设备在主体结构的首层楼板上施工新增桩基。本发明通过预设护筒，确保桩基顺利增加，且施工安全性高。
Construction method for adding pile foundation after excavation of foundation pit
一种基坑开挖后增加桩基的施工方法
DING JIANLEI (author) / ZENG SHUPING (author) / MAN HAIDA (author) / ZHANG NING'AN (author) / QIN WUCHUAN (author) / QIAN YUSHENG (author)
2021-09-21
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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