A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Integrated drill rod detection flushing device and construction method for old pile foundation
The invention discloses an integrated drill rod detection flushing device and a construction method for an old pile foundation. The bottom of a drill rod of an inner sleeve facility is an angle drill, and the angle drill is in a cone shape with the wide upper portion and the narrow lower portion; the outer guide pipe of the jacket facility is connected with the water injection pipe and the pressurizing device through a three-way pipe; a certain gap between the drill rod and the guide pipe is used for injecting high-pressure water between inner and outer sleeve gaps for the pressurizing device; the drill rod and the guide pipe are connected in a welded mode, the drill rod is connected in a threaded mode, and the guide pipe is connected in a screwed mode. The purposes that holes are formed in the peripheries of a single pile and multiple piles at the same time, and soil around the piles absorbs water to be dispersed and cracks into fragments and particles are achieved; after pile body soil is separated from the pile, a hole is formed in the middle suitable position below the exposed pile top through a water drill, a high-strength steel pipe with the same size as the hole and a hoisting machinery steel wire rope penetrate into the hole to hoist the old pile out, and the problem that disturbance is caused to the structural safety of surrounding buildings in the pile foundation treatment process is solved.
一种一体化钎探冲水装置及对旧桩基的施工方法，内套设施钎杆的底部为角钻，角钻呈上宽下窄的锥形；外套设施外导管通过三通管与注水管、加压装置图中未画出连接；钎杆与导管之间有一定空隙为加压装置注入内外套空隙之间的高压水；钎杆与导管为焊接连接，钎杆接长采用螺纹连接，导管接长采用丝扣连接。本发明达到单根桩及多根桩桩周同时成孔，使桩周土发生吸水分散、崩裂成碎块和碎粒目的；在桩身土与桩脱离后，在外露桩顶以下中间适宜位置用水钻开孔，穿入同孔大小高强钢管及起重机械钢丝绳将旧桩吊出，消除桩基处理过程中对周围建构筑物的结构安全造成扰动问题。
Integrated drill rod detection flushing device and construction method for old pile foundation
The invention discloses an integrated drill rod detection flushing device and a construction method for an old pile foundation. The bottom of a drill rod of an inner sleeve facility is an angle drill, and the angle drill is in a cone shape with the wide upper portion and the narrow lower portion; the outer guide pipe of the jacket facility is connected with the water injection pipe and the pressurizing device through a three-way pipe; a certain gap between the drill rod and the guide pipe is used for injecting high-pressure water between inner and outer sleeve gaps for the pressurizing device; the drill rod and the guide pipe are connected in a welded mode, the drill rod is connected in a threaded mode, and the guide pipe is connected in a screwed mode. The purposes that holes are formed in the peripheries of a single pile and multiple piles at the same time, and soil around the piles absorbs water to be dispersed and cracks into fragments and particles are achieved; after pile body soil is separated from the pile, a hole is formed in the middle suitable position below the exposed pile top through a water drill, a high-strength steel pipe with the same size as the hole and a hoisting machinery steel wire rope penetrate into the hole to hoist the old pile out, and the problem that disturbance is caused to the structural safety of surrounding buildings in the pile foundation treatment process is solved.
一种一体化钎探冲水装置及对旧桩基的施工方法，内套设施钎杆的底部为角钻，角钻呈上宽下窄的锥形；外套设施外导管通过三通管与注水管、加压装置图中未画出连接；钎杆与导管之间有一定空隙为加压装置注入内外套空隙之间的高压水；钎杆与导管为焊接连接，钎杆接长采用螺纹连接，导管接长采用丝扣连接。本发明达到单根桩及多根桩桩周同时成孔，使桩周土发生吸水分散、崩裂成碎块和碎粒目的；在桩身土与桩脱离后，在外露桩顶以下中间适宜位置用水钻开孔，穿入同孔大小高强钢管及起重机械钢丝绳将旧桩吊出，消除桩基处理过程中对周围建构筑物的结构安全造成扰动问题。
Integrated drill rod detection flushing device and construction method for old pile foundation
一种一体化钎探冲水装置及对旧桩基的施工方法
SUN QIANG (author) / XU HANGHANG (author) / YANG CHAO (author) / YU JIE (author) / FENG WEIGANG (author) / LI LEI (author) / ZHANG QIANG (author)
2022-05-27
Patent
Electronic Resource
Chinese
Pile foundation drilling construction method combining down-the-hole drill with impact drill
| European Patent Office | 2020
Sleeve type drill bit and composite pile foundation construction method
| European Patent Office | 2022
| European Patent Office | 2016