Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for large-diameter bored pile to penetrate through sand layer in water
The invention relates to the technical field of building construction, in particular to a construction method for a large-diameter bored pile to penetrate through a sand layer in water. The construction method comprises the steps of construction preparation and pile position lofting, pile casing inserting and driving, slurry preparation, drilling, primary hole cleaning, reinforcement cage lowering, guide pipe mounting, secondary hole cleaning, concrete pouring and pile foundation detection. According to the method, the construction technology that the large-diameter bored pile penetrates through the sand layer in water is optimized, so that the pile forming quality of the large-diameter bored pile of a deepwater foundation is efficiently guaranteed, and precious experience is provided for the construction technology and the acceptance standard of the large-diameter bored pile of the deepwater foundation in the railway industry. According to the method, the mud performance of the bored pile when the bored pile passes through a quicksand layer is optimized, so that the hole collapse phenomenon is effectively avoided. According to the method, an existing rotary excavating drill bit is optimized and improved, so that the drilling efficiency of the bored pile is improved, drill bit abrasion is reduced, and construction benefits are obvious.
本发明涉及建筑施工技术领域，特别涉及一种水中大直径钻孔桩穿越砂层施工方法，所述的施工方法包括：施工准备及桩位放样→插打护筒→泥浆调制→钻进→一次清孔→下放钢筋笼→安装导管→二次清孔→灌注混凝土→桩基检测。本方法优化了水中大直径钻孔桩穿越砂层施工工艺，高效的保证了深水基础大直径钻孔桩成桩质量，为铁路行业深水基础大直径钻孔桩施工技术和验收标准提供了宝贵的经验。本方法优化了钻孔桩在穿越流沙层时的泥浆性能，有效避免了塌孔现象。本方法对现有旋挖钻钻头进行了优化改进，既提高了钻孔桩钻进效率，又降低了钻头磨损，施工效益明显。
Construction method for large-diameter bored pile to penetrate through sand layer in water
The invention relates to the technical field of building construction, in particular to a construction method for a large-diameter bored pile to penetrate through a sand layer in water. The construction method comprises the steps of construction preparation and pile position lofting, pile casing inserting and driving, slurry preparation, drilling, primary hole cleaning, reinforcement cage lowering, guide pipe mounting, secondary hole cleaning, concrete pouring and pile foundation detection. According to the method, the construction technology that the large-diameter bored pile penetrates through the sand layer in water is optimized, so that the pile forming quality of the large-diameter bored pile of a deepwater foundation is efficiently guaranteed, and precious experience is provided for the construction technology and the acceptance standard of the large-diameter bored pile of the deepwater foundation in the railway industry. According to the method, the mud performance of the bored pile when the bored pile passes through a quicksand layer is optimized, so that the hole collapse phenomenon is effectively avoided. According to the method, an existing rotary excavating drill bit is optimized and improved, so that the drilling efficiency of the bored pile is improved, drill bit abrasion is reduced, and construction benefits are obvious.
本发明涉及建筑施工技术领域，特别涉及一种水中大直径钻孔桩穿越砂层施工方法，所述的施工方法包括：施工准备及桩位放样→插打护筒→泥浆调制→钻进→一次清孔→下放钢筋笼→安装导管→二次清孔→灌注混凝土→桩基检测。本方法优化了水中大直径钻孔桩穿越砂层施工工艺，高效的保证了深水基础大直径钻孔桩成桩质量，为铁路行业深水基础大直径钻孔桩施工技术和验收标准提供了宝贵的经验。本方法优化了钻孔桩在穿越流沙层时的泥浆性能，有效避免了塌孔现象。本方法对现有旋挖钻钻头进行了优化改进，既提高了钻孔桩钻进效率，又降低了钻头磨损，施工效益明显。
Construction method for large-diameter bored pile to penetrate through sand layer in water
水中大直径钻孔桩穿越砂层施工方法
CHEN YUBO (Autor:in) / SHEN CHAOCHAO (Autor:in) / ZHAO HAIBO (Autor:in) / LIU CHENGHONG (Autor:in) / MA LIANG (Autor:in) / WANG YINGMEI (Autor:in) / WU ZHEXI (Autor:in) / JI CHANGYONG (Autor:in) / ZHANG KUI (Autor:in) / BAI WENQING (Autor:in)
06.08.2021
Patent
Elektronische Ressource
Chinesisch
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