Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tubular pile end bottom expanding grouting construction method
The invention belongs to the technical field of foundation construction, and discloses a tubular pile end bottom expanding grouting construction method. The method comprises the following steps of adopting a tubular pile with an opening at the end part, after the tubular pile is driven into a soil body to a designed depth, starting to spray slurry from a position A below the pile end, gradually lifting and rotating a grouting pipe in the slurry spraying process, stopping slurry spraying until a position B of a soil plug in the tubular pile is reached, forming an expanded base between the position A and the pile end, and forming a grouting soil plug between the pile end and the position B. According to the method, grouting is carried out in the pipe pile construction process, so that the expanded head is formed at the pile end, meanwhile, the soil plug grouted to a certain height forms the grouting soil plug, the bearing area of a single pile is effectively increased, and the bearing capacity of a pile foundation is improved.
本发明属于地基基础施工技术领域，公开了一种管桩桩端扩底注浆施工方法，采用端部开口的管桩，在管桩打入土体至设计深度后，从桩端以下的A位置开始喷浆，喷浆过程中注浆管逐步上提和旋转，直到管桩内土塞的B位置处，停止喷浆，在所述A位置和所述桩端之间形成扩底，在所述桩端和所述B位置之间形成注浆土塞。本发明通过在管桩施工过程中进行注浆，从而在桩端形成扩大头，同时注浆至一定高度的土塞形成注浆土塞，有效增加了单桩的承载面积，提高了桩基承载力。
Tubular pile end bottom expanding grouting construction method
The invention belongs to the technical field of foundation construction, and discloses a tubular pile end bottom expanding grouting construction method. The method comprises the following steps of adopting a tubular pile with an opening at the end part, after the tubular pile is driven into a soil body to a designed depth, starting to spray slurry from a position A below the pile end, gradually lifting and rotating a grouting pipe in the slurry spraying process, stopping slurry spraying until a position B of a soil plug in the tubular pile is reached, forming an expanded base between the position A and the pile end, and forming a grouting soil plug between the pile end and the position B. According to the method, grouting is carried out in the pipe pile construction process, so that the expanded head is formed at the pile end, meanwhile, the soil plug grouted to a certain height forms the grouting soil plug, the bearing area of a single pile is effectively increased, and the bearing capacity of a pile foundation is improved.
本发明属于地基基础施工技术领域，公开了一种管桩桩端扩底注浆施工方法，采用端部开口的管桩，在管桩打入土体至设计深度后，从桩端以下的A位置开始喷浆，喷浆过程中注浆管逐步上提和旋转，直到管桩内土塞的B位置处，停止喷浆，在所述A位置和所述桩端之间形成扩底，在所述桩端和所述B位置之间形成注浆土塞。本发明通过在管桩施工过程中进行注浆，从而在桩端形成扩大头，同时注浆至一定高度的土塞形成注浆土塞，有效增加了单桩的承载面积，提高了桩基承载力。
Tubular pile end bottom expanding grouting construction method
一种管桩桩端扩底注浆施工方法
GAO ZHENFENG (Autor:in) / ZHOU RONGFENG (Autor:in) / WANG XIAO (Autor:in) / JIANG XIAOQIANG (Autor:in) / LI CAO (Autor:in)
10.09.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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