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A platform for research: civil engineering, architecture and urbanism
Rapid reinforcing treatment method for silt foundation covered with miscellaneous fill
The invention discloses a rapid reinforcing treatment method for a silt foundation covered with miscellaneous fill. The method comprises the steps that (1) a geological drilling rig is adopted, and amiscellaneous fill layer and a silt layer are drilled in a pipe following manner and enter a lower covering bearing layer by 0.5m-1.0m; (2) a grouting pipe sleeved with a cloth bag is put down to thehole bottom; (3) a grouting pump is started, and water-permeable low-sand-rate concrete is injected in a segmented manner from bottom to top till the concrete is injected into the miscellaneous fill by 0.5m-2.0m; and (4) a next hole is constructed. According to the rapid reinforcing treatment method, the cloth bag compaction water guide pile technology is adopted, the cloth bag is adopted for limiting the situation that grouting slurry is diffused along a certain weak face, a regular pile column is formed, the sectional area of a water guide pile body is large, the pile body is a water guide pile, the permeability coefficient is large, dissipation of pore water pressure and pore water drainage can be accelerated, rapid drainage consolidation and compaction of a silt soil body around the pile can be achieved, meanwhile, the pile body with high strength is formed, the bearing capacity and the anti-shearing capacity of a composite stratum can be rapidly improved, and foundation settlementand displacement are reduced.
本发明公开了一种用于上覆有杂填土的淤泥地基的加固快速处理方法：(1)采用地质钻机，跟管钻进杂填土层和淤泥层，进入下覆持力层中0.5m～1.0m；(2)下入套有布袋的注浆管至孔底；(3)开启注浆泵，自下而上、分段注入透水性低砂率混凝土，直至注入杂填土中0.5m～2.0m；(4)对下一个孔进行施工。本发明采用布袋压密导水桩技术，采用布袋限制灌注浆体沿某一弱面扩散，形成较规则的桩柱，导水桩体截面积大，桩体为导水桩，渗透系数大，可加快孔隙水压力的消散和孔隙水排出，可实现对桩周淤泥土体快速排水固结与压密，同时形成了较高强度的桩体，可以达到快速提高复合地层的承载力和抗剪切能力，减少地基沉降和位移。
Rapid reinforcing treatment method for silt foundation covered with miscellaneous fill
The invention discloses a rapid reinforcing treatment method for a silt foundation covered with miscellaneous fill. The method comprises the steps that (1) a geological drilling rig is adopted, and amiscellaneous fill layer and a silt layer are drilled in a pipe following manner and enter a lower covering bearing layer by 0.5m-1.0m; (2) a grouting pipe sleeved with a cloth bag is put down to thehole bottom; (3) a grouting pump is started, and water-permeable low-sand-rate concrete is injected in a segmented manner from bottom to top till the concrete is injected into the miscellaneous fill by 0.5m-2.0m; and (4) a next hole is constructed. According to the rapid reinforcing treatment method, the cloth bag compaction water guide pile technology is adopted, the cloth bag is adopted for limiting the situation that grouting slurry is diffused along a certain weak face, a regular pile column is formed, the sectional area of a water guide pile body is large, the pile body is a water guide pile, the permeability coefficient is large, dissipation of pore water pressure and pore water drainage can be accelerated, rapid drainage consolidation and compaction of a silt soil body around the pile can be achieved, meanwhile, the pile body with high strength is formed, the bearing capacity and the anti-shearing capacity of a composite stratum can be rapidly improved, and foundation settlementand displacement are reduced.
本发明公开了一种用于上覆有杂填土的淤泥地基的加固快速处理方法：(1)采用地质钻机，跟管钻进杂填土层和淤泥层，进入下覆持力层中0.5m～1.0m；(2)下入套有布袋的注浆管至孔底；(3)开启注浆泵，自下而上、分段注入透水性低砂率混凝土，直至注入杂填土中0.5m～2.0m；(4)对下一个孔进行施工。本发明采用布袋压密导水桩技术，采用布袋限制灌注浆体沿某一弱面扩散，形成较规则的桩柱，导水桩体截面积大，桩体为导水桩，渗透系数大，可加快孔隙水压力的消散和孔隙水排出，可实现对桩周淤泥土体快速排水固结与压密，同时形成了较高强度的桩体，可以达到快速提高复合地层的承载力和抗剪切能力，减少地基沉降和位移。
Rapid reinforcing treatment method for silt foundation covered with miscellaneous fill
一种用于上覆有杂填土的淤泥地基的加固快速处理方法
SI FU'AN (author) / BIN BIN (author) / HUANG XIAOQIAN (author) / HE MOLI (author) / PENG CHUNLEI (author) / GUO ZEYANG (author) / PENG YUEJIN (author) / TAN XINYANG (author)
2020-11-06
Patent
Electronic Resource
Chinese
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