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A platform for research: civil engineering, architecture and urbanism
Slurry spraying pile construction method for foundation reinforcement
The invention relates to a slurry spraying pile construction method for foundation reinforcement. The slurry spraying pile construction method comprises the steps that slurry is prepared and transported, and the specific gravity of cement slurry is controlled; pre-stirring and sinking, after the stirrer and related equipment operate normally, the stirrer rotates, cuts soil and sinks, and drilling is stopped when a drill bit sinks to a designed depth position; slurry spraying stirring is lifted for the first time, after a stirring shaft drills downwards to the designed depth, cement slurry is pressed into the foundation, and the slurry spraying amount is automatically recorded through a computer; and slurry spraying and stirring are repeated, when the drill bit is lifted away from the original ground, slurry spraying and stirring are conducted at the same time, drilling is stopped after the drill bit reaches the slurry spraying pile bottom, slurry spraying is continuously conducted for 1-2 min, and the stirring head rotates reversely from the slurry spraying pile bottom and is lifted to the ground. The obtained guniting pile body is high in strength and good in uniformity, the bearing capacity of the collapsible loess composite foundation is obviously improved, collapsibility is obviously reduced and improved, it is guaranteed that bridges and culverts are stable, sedimentation does not occur, the pile forming effect and quality are effectively improved, it is guaranteed that the cement mixing amount effect is maximized, the pile forming stress is uniform and reasonable, and economic benefits are high.
本发明涉及一种用于地基加固的浆喷桩施工方法，其包括浆液的制备与运输，控制水泥浆的比重；预搅下沉，搅拌机及相关设备运行正常后，搅拌机旋转切土下沉，钻头下沉至设计深度位置时，停止钻进；第一次提升喷浆搅拌，搅拌轴下钻到设计深度后，将水泥浆压入地基中，并通过电脑自动计录喷浆量；重复喷浆搅拌，当钻头提升远离原地面时，再边喷浆边搅拌，至喷浆桩底后停止钻进并连续喷浆1‑2min，搅拌头自喷浆桩底反转提升至地面。本发明得到的喷浆桩身强度高，桩身均匀性良好，湿陷性黄土复合地基承载能力提升显著，明显降低改善湿陷性，保证桥涵稳定、不发生沉降，有效提高成桩效果及质量、确保设计水泥掺量效果最大化，且成桩受力均匀合理、经济效益高。
Slurry spraying pile construction method for foundation reinforcement
The invention relates to a slurry spraying pile construction method for foundation reinforcement. The slurry spraying pile construction method comprises the steps that slurry is prepared and transported, and the specific gravity of cement slurry is controlled; pre-stirring and sinking, after the stirrer and related equipment operate normally, the stirrer rotates, cuts soil and sinks, and drilling is stopped when a drill bit sinks to a designed depth position; slurry spraying stirring is lifted for the first time, after a stirring shaft drills downwards to the designed depth, cement slurry is pressed into the foundation, and the slurry spraying amount is automatically recorded through a computer; and slurry spraying and stirring are repeated, when the drill bit is lifted away from the original ground, slurry spraying and stirring are conducted at the same time, drilling is stopped after the drill bit reaches the slurry spraying pile bottom, slurry spraying is continuously conducted for 1-2 min, and the stirring head rotates reversely from the slurry spraying pile bottom and is lifted to the ground. The obtained guniting pile body is high in strength and good in uniformity, the bearing capacity of the collapsible loess composite foundation is obviously improved, collapsibility is obviously reduced and improved, it is guaranteed that bridges and culverts are stable, sedimentation does not occur, the pile forming effect and quality are effectively improved, it is guaranteed that the cement mixing amount effect is maximized, the pile forming stress is uniform and reasonable, and economic benefits are high.
本发明涉及一种用于地基加固的浆喷桩施工方法，其包括浆液的制备与运输，控制水泥浆的比重；预搅下沉，搅拌机及相关设备运行正常后，搅拌机旋转切土下沉，钻头下沉至设计深度位置时，停止钻进；第一次提升喷浆搅拌，搅拌轴下钻到设计深度后，将水泥浆压入地基中，并通过电脑自动计录喷浆量；重复喷浆搅拌，当钻头提升远离原地面时，再边喷浆边搅拌，至喷浆桩底后停止钻进并连续喷浆1‑2min，搅拌头自喷浆桩底反转提升至地面。本发明得到的喷浆桩身强度高，桩身均匀性良好，湿陷性黄土复合地基承载能力提升显著，明显降低改善湿陷性，保证桥涵稳定、不发生沉降，有效提高成桩效果及质量、确保设计水泥掺量效果最大化，且成桩受力均匀合理、经济效益高。
Slurry spraying pile construction method for foundation reinforcement
一种用于地基加固的浆喷桩施工方法
LIU SHIPENG (author) / LI ZHENGHU (author) / DING PENGWEN (author) / LI MING (author) / DU KAI (author) / WEI YUZE (author) / GAO JIANSHE (author) / ZHAO WEICHEN (author) / NIE ZHIYING (author) / ZHANG WENFENG (author)
2022-09-13
Patent
Electronic Resource
Chinese
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