Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cast-in-situ bored pile construction method
The invention provides a cast-in-situ bored pile construction method, and belongs to the technical field of cast-in-situ bored pile construction. The method comprises the steps that a pile casing is buried in a pile position on the ground, and part of the pile casing is exposed out of the ground; drilling is carried out to form a hole; a hole is drilled in the soil layer in the pile casing to forma pile hole, and mud is injected into the pile casing during drilling; the mud is prepared from water, clay, bentonite and a copolymer filtrate reduction reagent, and the mass ratio of the water to the clay to the bentonite to the copolymer filtrate reduction reagent is (0.9-1) : (0.3-0.5) : (0.07-0.09) : (0.005-0.015); a reinforcement cage is placed in the pile hole; and concrete is poured intothe pile hole to the preset height to form the cast-in-situ bored pile. Chemical mud is adopted for wall protection construction of sand soil, the self-supporting strength of the hole wall of the pilehole can be enhanced, the wall protection effect is improved, and the hole collapse probability is effectively reduced.
本发明提供一种钻孔灌注桩施工方法，属于钻孔灌注桩施工技术领域，所述方法包括：在地面的桩位埋设护筒，所述护筒的部分露出地面；钻进成孔：向所述护筒内的土层钻孔以形成桩孔，钻孔时向所述护筒内注入泥浆；其中，所述泥浆包括水、粘土、膨润土和共聚物降滤试剂，且所述水、所述粘土、所述膨润土和所述共聚物降滤试剂的质量比为(0.9～1)：(0.3～0.5)：(0.07～0.09)：(0.005～0.015)；向所述桩孔内放置钢筋笼；向所述桩孔内浇筑混凝土至预设高度以形成钻孔灌注桩。采用化学泥浆进行砂类土的护壁施工，能增强桩孔孔壁的自立强度，增加护壁效果，有效降低塌孔几率。
Cast-in-situ bored pile construction method
The invention provides a cast-in-situ bored pile construction method, and belongs to the technical field of cast-in-situ bored pile construction. The method comprises the steps that a pile casing is buried in a pile position on the ground, and part of the pile casing is exposed out of the ground; drilling is carried out to form a hole; a hole is drilled in the soil layer in the pile casing to forma pile hole, and mud is injected into the pile casing during drilling; the mud is prepared from water, clay, bentonite and a copolymer filtrate reduction reagent, and the mass ratio of the water to the clay to the bentonite to the copolymer filtrate reduction reagent is (0.9-1) : (0.3-0.5) : (0.07-0.09) : (0.005-0.015); a reinforcement cage is placed in the pile hole; and concrete is poured intothe pile hole to the preset height to form the cast-in-situ bored pile. Chemical mud is adopted for wall protection construction of sand soil, the self-supporting strength of the hole wall of the pilehole can be enhanced, the wall protection effect is improved, and the hole collapse probability is effectively reduced.
本发明提供一种钻孔灌注桩施工方法，属于钻孔灌注桩施工技术领域，所述方法包括：在地面的桩位埋设护筒，所述护筒的部分露出地面；钻进成孔：向所述护筒内的土层钻孔以形成桩孔，钻孔时向所述护筒内注入泥浆；其中，所述泥浆包括水、粘土、膨润土和共聚物降滤试剂，且所述水、所述粘土、所述膨润土和所述共聚物降滤试剂的质量比为(0.9～1)：(0.3～0.5)：(0.07～0.09)：(0.005～0.015)；向所述桩孔内放置钢筋笼；向所述桩孔内浇筑混凝土至预设高度以形成钻孔灌注桩。采用化学泥浆进行砂类土的护壁施工，能增强桩孔孔壁的自立强度，增加护壁效果，有效降低塌孔几率。
Cast-in-situ bored pile construction method
一种钻孔灌注桩施工方法
GULIZAILA AIMAIERJIANG (Autor:in) / CHEN YUNZE (Autor:in) / YANG FAN (Autor:in) / WEI HONGGANG (Autor:in) / YANG ZHIGANG (Autor:in) / GAO RUNBAO (Autor:in) / MENG SHUHAO (Autor:in) / YANG BILIANG (Autor:in) / BIAN YUBAO (Autor:in)
13.10.2020
Patent
Elektronische Ressource
Chinesisch
Cast-in-situ bored pile water stop structure and cast-in-situ bored pile construction method
| Europäisches Patentamt | 2021