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A platform for research: civil engineering, architecture and urbanism
Rotary excavating and hole forming construction method for pile foundation in gravel area with holes prone to collapse
The invention provides a rotary excavating and hole forming construction method for a pile foundation in a gravel area with holes prone to collapse, and belongs to the technical field of building construction. The method comprises the steps of construction preparation, rotary excavating drill drilling, concrete backfilling, secondary drilling, continuous drilling, pile foundation pouring and the like. The construction preparation step comprises the steps of instrument preparation, construction scheme making and emergency preparation. The concrete backfilling step further comprises the steps of pouring guide pipe erecting and plain concrete pouring. Plain concrete is C20 fine stone plain concrete. According to the method, the plain concrete and the gravel area are mixed, the geological condition is improved, the strength of the hole walls of the formed holes is improved, hole collapse is prevented again, the pile foundation drilling speed is increased, the pile foundation drilling quality is improved, construction reworking is prevented, the labor cost and the mechanical cost are saved, economic losses are reduced, the delay of the construction period influenced by hole collapse is reduced, the construction efficiency is improved, the construction period is shortened, the problem that the pile foundation in the large-particle-size gravel area with undercurrent cannot be formed is effectively solved, and precious experience is accumulated for later similar projects.
本发明提供了一种易塌孔砾石区桩基旋挖成孔施工方法，属于建筑施工技术领域，该方法包括施工准备、旋挖钻钻孔、混凝土回填、二次钻孔、继续钻孔和浇筑桩基等步骤，其中，施工准备步骤包括器械准备、制定施工方案和应急准备步骤，混凝土回填步骤还包括架设浇筑导管和浇筑素混凝土步骤，素混凝土为C20细石素混凝土，该方法利用素混凝土与砾石区进行混合，改善地质条件，增大成孔孔壁的强度，防止再次塌孔，提高了桩基钻孔的速度和质量，防止施工返工，节省人工和机械费用，减少经济损失，降低塌孔影响施工工期的延误，提高施工效率，压缩工期，有效解决了有暗流的大粒径砾石区桩基无法成孔的难题，为以后的类似工程积累了宝贵的经验。
Rotary excavating and hole forming construction method for pile foundation in gravel area with holes prone to collapse
The invention provides a rotary excavating and hole forming construction method for a pile foundation in a gravel area with holes prone to collapse, and belongs to the technical field of building construction. The method comprises the steps of construction preparation, rotary excavating drill drilling, concrete backfilling, secondary drilling, continuous drilling, pile foundation pouring and the like. The construction preparation step comprises the steps of instrument preparation, construction scheme making and emergency preparation. The concrete backfilling step further comprises the steps of pouring guide pipe erecting and plain concrete pouring. Plain concrete is C20 fine stone plain concrete. According to the method, the plain concrete and the gravel area are mixed, the geological condition is improved, the strength of the hole walls of the formed holes is improved, hole collapse is prevented again, the pile foundation drilling speed is increased, the pile foundation drilling quality is improved, construction reworking is prevented, the labor cost and the mechanical cost are saved, economic losses are reduced, the delay of the construction period influenced by hole collapse is reduced, the construction efficiency is improved, the construction period is shortened, the problem that the pile foundation in the large-particle-size gravel area with undercurrent cannot be formed is effectively solved, and precious experience is accumulated for later similar projects.
本发明提供了一种易塌孔砾石区桩基旋挖成孔施工方法，属于建筑施工技术领域，该方法包括施工准备、旋挖钻钻孔、混凝土回填、二次钻孔、继续钻孔和浇筑桩基等步骤，其中，施工准备步骤包括器械准备、制定施工方案和应急准备步骤，混凝土回填步骤还包括架设浇筑导管和浇筑素混凝土步骤，素混凝土为C20细石素混凝土，该方法利用素混凝土与砾石区进行混合，改善地质条件，增大成孔孔壁的强度，防止再次塌孔，提高了桩基钻孔的速度和质量，防止施工返工，节省人工和机械费用，减少经济损失，降低塌孔影响施工工期的延误，提高施工效率，压缩工期，有效解决了有暗流的大粒径砾石区桩基无法成孔的难题，为以后的类似工程积累了宝贵的经验。
Rotary excavating and hole forming construction method for pile foundation in gravel area with holes prone to collapse
一种易塌孔砾石区桩基旋挖成孔施工方法
ZHANG XIN (author) / LIU XIANPING (author) / MA GUANGZHUANG (author) / HOU QINGMIN (author) / YIN FEI (author)
2021-12-03
Patent
Electronic Resource
Chinese
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