Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Waterproof curtain and column hammer bottom expanded pile composite foundation and construction method thereof
The invention discloses a waterproof curtain and column hammer bottom expanded pile composite foundation and a construction method thereof. The difficulties of high railway foundation treatment cost, high treatment difficulty and the like become main limiting factors of current collapsible loess area passenger and special roadbed engineering. The device comprises a waterproof curtain which is arranged in a soil body layer below a cushion layer, and the top of the waterproof curtain is fixedly connected into the cushion layer; a subgrade body, a subgrade bed bottom layer and a subgrade bed surface layer are sequentially arranged above the cushion layer; a column hammer bottom expansion pile is arranged in a soil body range between the two waterproof curtains; a drainage ditch is arranged outside a slope toe of the roadbed body, and the column hammer bottom expanding piles are distributed in a regular triangle mode in a mode of hole jumping driving and row and row separation mode. By arranging the waterproof curtain, it is guaranteed that the foundation is not affected by external water permeation, meanwhile, the column hammer bottom expanding piles are arranged to seal surface water permeation and improve the bearing capacity of the foundation, the potential risk that the railway roadbed foundation is soaked in water is avoided, and the roadbed foundation treatment cost is greatly reduced.
本发明公开了一种阻水帷幕加柱锤底扩桩复合地基及其施工方法。铁路地基处理成本高、处理难度大等难点已成为当前湿陷性黄土区客专路基工程的主要限制因素。本发明包括阻水帷幕，设置于垫层下方的土体层中，顶部固定连接于垫层中；垫层上方依次设置有路基本体、基床底层和基床表层；两道阻水帷幕之间的土体范围内设置柱锤底扩桩；路基本体坡脚外设置有排水沟，柱锤底扩桩采用跳孔打，隔排隔行，正三角形布桩。本发明通过设置阻水帷幕保证地基不受外界水渗透影响，同时设置柱锤底扩桩封闭地表水渗入和提高地基承载力，避免铁路路基地基受水浸泡的潜在风险，大幅降低路基地基处理的成本。
Waterproof curtain and column hammer bottom expanded pile composite foundation and construction method thereof
The invention discloses a waterproof curtain and column hammer bottom expanded pile composite foundation and a construction method thereof. The difficulties of high railway foundation treatment cost, high treatment difficulty and the like become main limiting factors of current collapsible loess area passenger and special roadbed engineering. The device comprises a waterproof curtain which is arranged in a soil body layer below a cushion layer, and the top of the waterproof curtain is fixedly connected into the cushion layer; a subgrade body, a subgrade bed bottom layer and a subgrade bed surface layer are sequentially arranged above the cushion layer; a column hammer bottom expansion pile is arranged in a soil body range between the two waterproof curtains; a drainage ditch is arranged outside a slope toe of the roadbed body, and the column hammer bottom expanding piles are distributed in a regular triangle mode in a mode of hole jumping driving and row and row separation mode. By arranging the waterproof curtain, it is guaranteed that the foundation is not affected by external water permeation, meanwhile, the column hammer bottom expanding piles are arranged to seal surface water permeation and improve the bearing capacity of the foundation, the potential risk that the railway roadbed foundation is soaked in water is avoided, and the roadbed foundation treatment cost is greatly reduced.
本发明公开了一种阻水帷幕加柱锤底扩桩复合地基及其施工方法。铁路地基处理成本高、处理难度大等难点已成为当前湿陷性黄土区客专路基工程的主要限制因素。本发明包括阻水帷幕，设置于垫层下方的土体层中，顶部固定连接于垫层中；垫层上方依次设置有路基本体、基床底层和基床表层；两道阻水帷幕之间的土体范围内设置柱锤底扩桩；路基本体坡脚外设置有排水沟，柱锤底扩桩采用跳孔打，隔排隔行，正三角形布桩。本发明通过设置阻水帷幕保证地基不受外界水渗透影响，同时设置柱锤底扩桩封闭地表水渗入和提高地基承载力，避免铁路路基地基受水浸泡的潜在风险，大幅降低路基地基处理的成本。
Waterproof curtain and column hammer bottom expanded pile composite foundation and construction method thereof
一种阻水帷幕加柱锤底扩桩复合地基及其施工方法
ZHANG RAN (Autor:in) / YU JINING (Autor:in) / CHEN HAO (Autor:in) / LI XIAOLUN (Autor:in) / WANG YINGMING (Autor:in) / GAO ZHIWEI (Autor:in) / LIU JUAN (Autor:in) / WANG DUOQING (Autor:in) / WANG YANING (Autor:in)
22.11.2022
Patent
Elektronische Ressource
Chinesisch
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