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Pile foundation steel casing capable of controlling stratum deformation and construction method thereof
The pile foundation steel casing comprises a steel casing body, a grouting pipe, an outer side horizontal pressure sensor and an inner side grouting pressure sensor, the steel casing body comprises an inner layer steel wall, an outer layer steel wall and connecting reinforcing ribs, and the grouting pipe is arranged between the inner layer steel wall and the outer layer steel wall of the steel casing body; the connecting reinforcing ribs comprise longitudinal reinforcing ribs and transverse reinforcing ribs which are attached to the outer circumferential face of the inner-layer steel wall and the inner circumferential face of the outer-layer steel wall in a staggered mode, the steel casing located at the lowest end of the pile foundation steel casing is a drilling section, the steel casing above the drilling section is a connecting section, the outer circumferential face of the steel casing of the drilling section is concaved inwards to form an assembling groove, and the assembling groove is connected with the connecting section. The outer side horizontal pressure sensor and the inner side grouting pressure sensor are installed on a drilling section. The invention further provides a construction method of the pile foundation steel casing capable of controlling stratum deformation. The method has the beneficial effects that by dynamically implementing synchronous grouting, different amounts of grout can be injected according to the change of the pressure of soil layers with different depths during pipe drawing, so that the horizontal deformation of the soil body of the stratum can be effectively controlled.
本发明公开了一种可控地层变形的桩基钢护筒，包括钢护筒、注浆管、外侧水平压力传感器以及内侧注浆压力传感器，钢护筒包括内层钢壁、外层钢壁以及连接加强筋，注浆管设置于钢护筒的内层钢壁和外层钢壁之间，连接加强筋包括纵向加筋肋和交错贴附于内层钢壁外周面和外层钢壁内周面上的横向加筋肋，位于桩基钢护筒最下端的钢护筒为钻进段，该钻进段上方的钢护筒为连接段，钻进段的钢护筒的外周面向内凹陷形成装配凹槽，外侧水平压力传感器和内侧注浆压力传感器安装于钻进段。本发明还提供了一种可控地层变形的桩基钢护筒的施工方法。本发明的有益效果：通过动态实施同步注浆，可以实现拔管时根据不同深度的土层压力的变化而注入不同量的浆液，从而可以有效控制地层土体水平变形。
Pile foundation steel casing capable of controlling stratum deformation and construction method thereof
The pile foundation steel casing comprises a steel casing body, a grouting pipe, an outer side horizontal pressure sensor and an inner side grouting pressure sensor, the steel casing body comprises an inner layer steel wall, an outer layer steel wall and connecting reinforcing ribs, and the grouting pipe is arranged between the inner layer steel wall and the outer layer steel wall of the steel casing body; the connecting reinforcing ribs comprise longitudinal reinforcing ribs and transverse reinforcing ribs which are attached to the outer circumferential face of the inner-layer steel wall and the inner circumferential face of the outer-layer steel wall in a staggered mode, the steel casing located at the lowest end of the pile foundation steel casing is a drilling section, the steel casing above the drilling section is a connecting section, the outer circumferential face of the steel casing of the drilling section is concaved inwards to form an assembling groove, and the assembling groove is connected with the connecting section. The outer side horizontal pressure sensor and the inner side grouting pressure sensor are installed on a drilling section. The invention further provides a construction method of the pile foundation steel casing capable of controlling stratum deformation. The method has the beneficial effects that by dynamically implementing synchronous grouting, different amounts of grout can be injected according to the change of the pressure of soil layers with different depths during pipe drawing, so that the horizontal deformation of the soil body of the stratum can be effectively controlled.
本发明公开了一种可控地层变形的桩基钢护筒，包括钢护筒、注浆管、外侧水平压力传感器以及内侧注浆压力传感器，钢护筒包括内层钢壁、外层钢壁以及连接加强筋，注浆管设置于钢护筒的内层钢壁和外层钢壁之间，连接加强筋包括纵向加筋肋和交错贴附于内层钢壁外周面和外层钢壁内周面上的横向加筋肋，位于桩基钢护筒最下端的钢护筒为钻进段，该钻进段上方的钢护筒为连接段，钻进段的钢护筒的外周面向内凹陷形成装配凹槽，外侧水平压力传感器和内侧注浆压力传感器安装于钻进段。本发明还提供了一种可控地层变形的桩基钢护筒的施工方法。本发明的有益效果：通过动态实施同步注浆，可以实现拔管时根据不同深度的土层压力的变化而注入不同量的浆液，从而可以有效控制地层土体水平变形。
Pile foundation steel casing capable of controlling stratum deformation and construction method thereof
一种可控地层变形的桩基钢护筒及其施工方法
CHEN FUBIN (author) / XU YAN (author) / LI PENG (author) / RUAN SHIQIANG (author) / LIU YUAN (author) / CHEN RENPENG (author)
2022-07-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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