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A platform for research: civil engineering, architecture and urbanism
Method for grouting and wall protection of a soft stratum pile foundation through steel casing
The invention belongs to the technical field of constructional engineering, and relates to a method for grouting and wall protection of a soft stratum pile foundation through a steel casing. The method for grouting and wall protection of the soft stratum pile foundation through the steel casing comprises the steps that grouting pipes are arranged on the outer wall of the machined steel casing at equal intervals in the circumferential direction, and a plurality of layers of upper and lower grout overflowing holes are formed in each grouting pipe; after the steel casing provided with the grouting pipes is installed on a hard plastic stratum, grout is pressed and injected into a top grouting opening, the grouting pressure is adjusted according to the thickness of a soft stratum, grout with acertain thickness is pressed and grouted according to the wall of a grouting hole, and the grout flows out of a bottom grout outlet at first and then flows out of all layers of grout overflowing holesin sequence from bottom to top; after grouting is completed, the steel casing is pulled out, the pulling-out process is slowly carried out, the gap of the steel casing is filled with grout in a supplementing manner till the steel casing is completely pulled out, and a grout protection wall with certain strength is formed after the grout at the position of the original steel casing reaches the strength; and then pile foundation construction is conducted according to a conventional pile foundation. The construction cost is reduced, and the working efficiency is improved.
本发明属于建筑工程技术领域，涉及一种软弱地层桩基利用钢护筒注浆护壁的方法。涉及的一种软弱地层桩基利用钢护筒注浆护壁的方法为在加工好的钢护筒外壁沿圆周等间距布置注浆管，每根注浆管上布置有上下多层所述的溢浆孔；将安装有注浆管的钢护筒安装至硬塑地层后，对顶部注浆口进行压注浆液，根据软弱地层厚度，调整注浆压力，按照注浆孔壁压注一定厚度浆液，浆液首先通过底部出浆口流出，然后由下向上依次通过每层溢浆孔流出；注浆完成后，拔出钢护筒，拔出的过程缓慢进行使浆液补注填充钢护筒空隙，直至全部拔出，原钢护筒的位置泥浆达到强度后形成一定强度的浆护壁；然后按照常规桩基进行桩基施工。本发明降低了施工成本，提高了工作效率。
Method for grouting and wall protection of a soft stratum pile foundation through steel casing
The invention belongs to the technical field of constructional engineering, and relates to a method for grouting and wall protection of a soft stratum pile foundation through a steel casing. The method for grouting and wall protection of the soft stratum pile foundation through the steel casing comprises the steps that grouting pipes are arranged on the outer wall of the machined steel casing at equal intervals in the circumferential direction, and a plurality of layers of upper and lower grout overflowing holes are formed in each grouting pipe; after the steel casing provided with the grouting pipes is installed on a hard plastic stratum, grout is pressed and injected into a top grouting opening, the grouting pressure is adjusted according to the thickness of a soft stratum, grout with acertain thickness is pressed and grouted according to the wall of a grouting hole, and the grout flows out of a bottom grout outlet at first and then flows out of all layers of grout overflowing holesin sequence from bottom to top; after grouting is completed, the steel casing is pulled out, the pulling-out process is slowly carried out, the gap of the steel casing is filled with grout in a supplementing manner till the steel casing is completely pulled out, and a grout protection wall with certain strength is formed after the grout at the position of the original steel casing reaches the strength; and then pile foundation construction is conducted according to a conventional pile foundation. The construction cost is reduced, and the working efficiency is improved.
本发明属于建筑工程技术领域，涉及一种软弱地层桩基利用钢护筒注浆护壁的方法。涉及的一种软弱地层桩基利用钢护筒注浆护壁的方法为在加工好的钢护筒外壁沿圆周等间距布置注浆管，每根注浆管上布置有上下多层所述的溢浆孔；将安装有注浆管的钢护筒安装至硬塑地层后，对顶部注浆口进行压注浆液，根据软弱地层厚度，调整注浆压力，按照注浆孔壁压注一定厚度浆液，浆液首先通过底部出浆口流出，然后由下向上依次通过每层溢浆孔流出；注浆完成后，拔出钢护筒，拔出的过程缓慢进行使浆液补注填充钢护筒空隙，直至全部拔出，原钢护筒的位置泥浆达到强度后形成一定强度的浆护壁；然后按照常规桩基进行桩基施工。本发明降低了施工成本，提高了工作效率。
Method for grouting and wall protection of a soft stratum pile foundation through steel casing
一种软弱地层桩基利用钢护筒注浆护壁的方法
WANG JIAFU (author) / ZHANG HUA (author) / LI YANMING (author) / WU HONGSHENG (author) / MA HUIJIE (author)
2020-12-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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