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A platform for research: civil engineering, architecture and urbanism
Open caisson construction method and open caisson structure
According to the open caisson construction method, an open caisson structure is adopted, the side wall of an open caisson box serves as a first stress point, an anchor pile fixing point position in the sinking direction of the open caisson box serves as a second stress point, a jack and an anchor rod mechanism are arranged in the sinking direction of the open caisson box, and the end, close to the second stress point, of the jack is connected with the first stress point; the end, away from the second stress point, of the jack is connected with the second stress point through an anchor rod mechanism; tensile force is applied to the anchor rod mechanism through jacking force of the jack, the tensile force pulls the open caisson box to sink, sinking construction of the open caisson box is achieved, the swelling slurry sleeve and the slurry conveying system are arranged outside the caisson in the sinking process, sinking friction force can be reduced, and disturbance to surrounding soil is reduced. The method overcomes the defects that a traditional open caisson has large disturbance on the periphery, the sinking posture of the open caisson is not easy to control, and sinking deflection is easy. Open caisson components in asymmetric shapes can be constructed, low-vibration, noise-free, safe and efficient open caisson construction can be achieved in a narrow space with limited construction space, the influence on surrounding buildings is reduced, and the open caisson construction method can be suitable for a low-clearance construction environment; the method is simple in step and convenient to construct, the construction cost is reduced, and wide application prospects are achieved.
本发明提供一种沉井施工方法以沉井结构，通过以沉井箱的侧壁作为第一受力点，以沉井箱下沉方向上的锚桩固定点位作为第二受力点，在沉井箱的下沉方向上设置千斤顶和锚杆机构，将千斤顶靠近第二受力点的一端与第一受力点连接，将千斤顶远离第二受力点的一端通过锚杆机构与第二受力点连接；通过千斤顶的顶升力对锚杆机构施加拉力，拉力牵引沉井箱下沉，实现沉井箱的下沉施工，下沉过程中在沉箱外部设置了膨润浆泥浆套和输浆系统，可以减少下沉摩擦力，并减少对周边土体的扰动。该方法解决传统沉井对周边扰动大、不容易控制沉井的下沉姿态容易沉偏的缺陷。可施工不对称形状的沉井构件，可在施工空间受限的狭小空间内实现低振动、无噪音、安全高效的沉井施工，减小对周边建筑物影响，能够适用于低净空施工环境；该方法步骤简单，施工方便，降低施工成本，具有广阔的应用前景。
Open caisson construction method and open caisson structure
According to the open caisson construction method, an open caisson structure is adopted, the side wall of an open caisson box serves as a first stress point, an anchor pile fixing point position in the sinking direction of the open caisson box serves as a second stress point, a jack and an anchor rod mechanism are arranged in the sinking direction of the open caisson box, and the end, close to the second stress point, of the jack is connected with the first stress point; the end, away from the second stress point, of the jack is connected with the second stress point through an anchor rod mechanism; tensile force is applied to the anchor rod mechanism through jacking force of the jack, the tensile force pulls the open caisson box to sink, sinking construction of the open caisson box is achieved, the swelling slurry sleeve and the slurry conveying system are arranged outside the caisson in the sinking process, sinking friction force can be reduced, and disturbance to surrounding soil is reduced. The method overcomes the defects that a traditional open caisson has large disturbance on the periphery, the sinking posture of the open caisson is not easy to control, and sinking deflection is easy. Open caisson components in asymmetric shapes can be constructed, low-vibration, noise-free, safe and efficient open caisson construction can be achieved in a narrow space with limited construction space, the influence on surrounding buildings is reduced, and the open caisson construction method can be suitable for a low-clearance construction environment; the method is simple in step and convenient to construct, the construction cost is reduced, and wide application prospects are achieved.
本发明提供一种沉井施工方法以沉井结构，通过以沉井箱的侧壁作为第一受力点，以沉井箱下沉方向上的锚桩固定点位作为第二受力点，在沉井箱的下沉方向上设置千斤顶和锚杆机构，将千斤顶靠近第二受力点的一端与第一受力点连接，将千斤顶远离第二受力点的一端通过锚杆机构与第二受力点连接；通过千斤顶的顶升力对锚杆机构施加拉力，拉力牵引沉井箱下沉，实现沉井箱的下沉施工，下沉过程中在沉箱外部设置了膨润浆泥浆套和输浆系统，可以减少下沉摩擦力，并减少对周边土体的扰动。该方法解决传统沉井对周边扰动大、不容易控制沉井的下沉姿态容易沉偏的缺陷。可施工不对称形状的沉井构件，可在施工空间受限的狭小空间内实现低振动、无噪音、安全高效的沉井施工，减小对周边建筑物影响，能够适用于低净空施工环境；该方法步骤简单，施工方便，降低施工成本，具有广阔的应用前景。
Open caisson construction method and open caisson structure
一种沉井施工方法及沉井结构
QIAN HAIBO (author) / JIANG TAO (author) / DAI JIN (author) / GENG ZHE (author) / SHAO CHANGHUA (author) / DONG YUGUANG (author) / CHEN ZHIMING (author)
2023-02-24
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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