Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for solving pile foundation over-filling and sediment in karst region
The invention discloses a construction method for solving pile foundation over-filling and sediment in karst regions. The method comprises the following steps: a rotary pile drilling machine or a down-the-hole hammer is adopted to guide a hole, the diameter of the guide hole is 20-100mm larger than that of a tubular pile, and a proper amount of fine aggregate concrete is poured into the range of abearing stratum at the lower end part of the tubular pile. After the prestressed high-strength concrete pipe pile is conveyed to be close to the bottom of a hole, a hammering pile driver or a staticpressure machine is started, a gap between the pipe wall and the hole wall of the pipe pile is filled with fine aggregate concrete poured into the pile end in advance through extrusion, the pile end is stabilized, and the sediment problem is solved. The method well solves the difficult problems of pile foundation over-filling and pile bottom sediment in karst regions. Compared with a traditional cast-in-place pile, the cast-in-place pile has obvious advantages in the aspects of construction quality, construction period and engineering investment.
本发明公开了一种解决岩溶地区桩基超灌和沉渣的施工方法，包括以下步骤：采用旋挖桩机或潜孔锤引孔，引孔直径比管桩直径大20~100mm,在管桩下端部入持力岩层范围灌入适量的细石混凝土；将预应力高强度混凝土管桩送到接近孔底后启动锤击打桩机或静压机，将通过挤压预先灌入桩端的细石混凝土填充管桩管壁与孔壁空隙，以稳固桩端和解决沉渣问题。该方法很好地解决了岩溶地区桩基超灌和桩底沉渣的难点问题。在施工质量、施工周期及工程投资方面比传统的灌注桩有明显的优势。
Construction method for solving pile foundation over-filling and sediment in karst region
The invention discloses a construction method for solving pile foundation over-filling and sediment in karst regions. The method comprises the following steps: a rotary pile drilling machine or a down-the-hole hammer is adopted to guide a hole, the diameter of the guide hole is 20-100mm larger than that of a tubular pile, and a proper amount of fine aggregate concrete is poured into the range of abearing stratum at the lower end part of the tubular pile. After the prestressed high-strength concrete pipe pile is conveyed to be close to the bottom of a hole, a hammering pile driver or a staticpressure machine is started, a gap between the pipe wall and the hole wall of the pipe pile is filled with fine aggregate concrete poured into the pile end in advance through extrusion, the pile end is stabilized, and the sediment problem is solved. The method well solves the difficult problems of pile foundation over-filling and pile bottom sediment in karst regions. Compared with a traditional cast-in-place pile, the cast-in-place pile has obvious advantages in the aspects of construction quality, construction period and engineering investment.
本发明公开了一种解决岩溶地区桩基超灌和沉渣的施工方法，包括以下步骤：采用旋挖桩机或潜孔锤引孔，引孔直径比管桩直径大20~100mm,在管桩下端部入持力岩层范围灌入适量的细石混凝土；将预应力高强度混凝土管桩送到接近孔底后启动锤击打桩机或静压机，将通过挤压预先灌入桩端的细石混凝土填充管桩管壁与孔壁空隙，以稳固桩端和解决沉渣问题。该方法很好地解决了岩溶地区桩基超灌和桩底沉渣的难点问题。在施工质量、施工周期及工程投资方面比传统的灌注桩有明显的优势。
Construction method for solving pile foundation over-filling and sediment in karst region
一种解决岩溶地区桩基超灌和沉渣的施工方法
XU JIAN (Autor:in) / LI DALANG (Autor:in) / LIU HAO (Autor:in) / ZOU MINGLI (Autor:in) / YUAN KUN (Autor:in)
09.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Karst area pile foundation construction method and karst area pile foundation construction device
| Europäisches Patentamt | 2022
High-pressure pre-filling karst cave pile foundation construction method
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2022