A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a construction technology of a foundation pit adjacent to a building. The construction technology is characterized by comprising the following steps that A, an existing building foundation is machined and constructed, specifically, a1, the existing building foundation is measured and positioned; a2, a lateral channel is excavated downwards from an external soil layer of theexisting building foundation till the bottom face of the lateral channel is lower than the bottom face of the existing building foundation; a3, horizontal chambering is conducted from the bottom of the bottom face of the lateral channel to a position below the existing building foundation, and vertical deep excavation is conducted after chambering is conducted from the bottom end of the lateral channel to the position below the existing building foundation to form a supporting hole; a4, concrete is poured into the inner wall of the supporting hole to form a reinforcing pile; and B, the foundation pit is constructed, specifically, foundation pit excavation and foundation pit side wall reinforcing are conducted on the outer side of the building. Through the scheme, the reinforcing pile is used for supporting and bearing force on the existing building, the step-slope distance needed during the construction of the foundation pit is reduced, finally, excessive supporting in the foundationpit is not needed while foundation pit construction is conducted near the building, and the effective area of the foundation pit is guaranteed.
本发明公开了一种相邻有建筑物的基坑的施工工艺，其技术要点是，包括以下步骤：步骤A、既有建筑物基础加工施工：a1、测量定位既有建筑物基础；a2、既有建筑物基础的外部土层向下开挖侧向通道，至侧向通道底面低于既有建筑物基础底面；a3、在侧向通道底面的底部向既有建筑物基础下方进行水平扩孔，并在侧向通道底端扩孔至既有建筑物基础下方后竖直深挖形成支撑孔；a4、在支撑孔内壁上灌注砼形成加固桩；步骤B、基坑施工，在建筑物外侧进行基坑开挖与基坑侧壁加固。通过上述方案，利用加固桩对既有建筑物进行支撑受力，降低基坑在施工时所需要的放坡距离，最终实现在建筑物附近进行基坑施工的同时无需在基坑内进行过多支护，保障基坑的有效面积。
The invention discloses a construction technology of a foundation pit adjacent to a building. The construction technology is characterized by comprising the following steps that A, an existing building foundation is machined and constructed, specifically, a1, the existing building foundation is measured and positioned; a2, a lateral channel is excavated downwards from an external soil layer of theexisting building foundation till the bottom face of the lateral channel is lower than the bottom face of the existing building foundation; a3, horizontal chambering is conducted from the bottom of the bottom face of the lateral channel to a position below the existing building foundation, and vertical deep excavation is conducted after chambering is conducted from the bottom end of the lateral channel to the position below the existing building foundation to form a supporting hole; a4, concrete is poured into the inner wall of the supporting hole to form a reinforcing pile; and B, the foundation pit is constructed, specifically, foundation pit excavation and foundation pit side wall reinforcing are conducted on the outer side of the building. Through the scheme, the reinforcing pile is used for supporting and bearing force on the existing building, the step-slope distance needed during the construction of the foundation pit is reduced, finally, excessive supporting in the foundationpit is not needed while foundation pit construction is conducted near the building, and the effective area of the foundation pit is guaranteed.
本发明公开了一种相邻有建筑物的基坑的施工工艺，其技术要点是，包括以下步骤：步骤A、既有建筑物基础加工施工：a1、测量定位既有建筑物基础；a2、既有建筑物基础的外部土层向下开挖侧向通道，至侧向通道底面低于既有建筑物基础底面；a3、在侧向通道底面的底部向既有建筑物基础下方进行水平扩孔，并在侧向通道底端扩孔至既有建筑物基础下方后竖直深挖形成支撑孔；a4、在支撑孔内壁上灌注砼形成加固桩；步骤B、基坑施工，在建筑物外侧进行基坑开挖与基坑侧壁加固。通过上述方案，利用加固桩对既有建筑物进行支撑受力，降低基坑在施工时所需要的放坡距离，最终实现在建筑物附近进行基坑施工的同时无需在基坑内进行过多支护，保障基坑的有效面积。
Construction technology of foundation pit adjacent to building
一种相邻有建筑物的基坑的施工工艺
2020-08-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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