A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground storey-adding method for existing building in operation
The invention belongs to the field of constructional engineering, and relates to an underground storey-adding method for an existing building in operation, which comprises the following steps of: when the existing building is a building with a pile foundation in operation, supporting an enclosure structure by utilizing the residual bearing capacity of the existing pile foundation and the horizontal rigidity of the existing foundation, and then downwards excavating shallow earthwork to form a construction space; the underpinning pile foundation is constructed through micro-disturbance low-clearance construction equipment; a hydraulic jack is arranged between the basement conversion top plate and the existing foundation and can adjust deformation of the existing building in real time according to settlement monitoring data, and safety of the existing building in operation is guaranteed. The problem of deformation control of the existing building in operation and the problem of stress conversion in the excavation stage of the underground space are solved, the application range of the low-clearance underpinning pile in underground space development of the existing pile foundation building is widened, the horizontal rigidity of the existing foundation and all layers of additionally-built structures is fully utilized, and a large number of temporary horizontal supporting systems are omitted.
本发明属于建筑工程领域的一种运营中既有建筑的地下增层方法，步骤包括：当既有建筑为运营中的带桩基础建筑，可利用既有桩基的剩余承载力，利用既有基础的水平刚度支撑围护结构，然后向下开挖浅层土方形成施工空间，采用微扰动低净空施工设备施工托换桩基；地下室转换顶板与既有基础之间设置液压千斤顶，液压千斤顶可根据沉降监测数据实时调整既有建筑的变形，确保运营中的既有建筑的安全。解决了运营中既有建筑的变形控制问题、地下空间开挖阶段受力转换问题，拓宽了低净空托换桩在既有桩基础建筑地下空间开发中的应用，其充分利用既有基础和各层增建结构的水平刚度，免除大量临时水平支撑体系。
Underground storey-adding method for existing building in operation
The invention belongs to the field of constructional engineering, and relates to an underground storey-adding method for an existing building in operation, which comprises the following steps of: when the existing building is a building with a pile foundation in operation, supporting an enclosure structure by utilizing the residual bearing capacity of the existing pile foundation and the horizontal rigidity of the existing foundation, and then downwards excavating shallow earthwork to form a construction space; the underpinning pile foundation is constructed through micro-disturbance low-clearance construction equipment; a hydraulic jack is arranged between the basement conversion top plate and the existing foundation and can adjust deformation of the existing building in real time according to settlement monitoring data, and safety of the existing building in operation is guaranteed. The problem of deformation control of the existing building in operation and the problem of stress conversion in the excavation stage of the underground space are solved, the application range of the low-clearance underpinning pile in underground space development of the existing pile foundation building is widened, the horizontal rigidity of the existing foundation and all layers of additionally-built structures is fully utilized, and a large number of temporary horizontal supporting systems are omitted.
本发明属于建筑工程领域的一种运营中既有建筑的地下增层方法，步骤包括：当既有建筑为运营中的带桩基础建筑，可利用既有桩基的剩余承载力，利用既有基础的水平刚度支撑围护结构，然后向下开挖浅层土方形成施工空间，采用微扰动低净空施工设备施工托换桩基；地下室转换顶板与既有基础之间设置液压千斤顶，液压千斤顶可根据沉降监测数据实时调整既有建筑的变形，确保运营中的既有建筑的安全。解决了运营中既有建筑的变形控制问题、地下空间开挖阶段受力转换问题，拓宽了低净空托换桩在既有桩基础建筑地下空间开发中的应用，其充分利用既有基础和各层增建结构的水平刚度，免除大量临时水平支撑体系。
Underground storey-adding method for existing building in operation
一种运营中既有建筑的地下增层方法
WENG QIPING (author) / WANG WEIDONG (author) / SU YINJUN (author) / CHEN YONGCAI (author)
2024-10-18
Patent
Electronic Resource
Chinese
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