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Pile-supported soft soil roadbed reinforcing structure and reinforcing method
The invention discloses a pile-supported soft soil roadbed reinforcing structure and a reinforcing method. The pile-supported soft soil roadbed reinforcing structure comprises a solidified sludge filling embankment layer, a pile-supported soft soil roadbed reinforcing layer, a pile-supported soft soil roadbed reinforcing layer and a pile-supported soft soil roadbed reinforcing layer which are sequentially arranged from top to bottom, the three-dimensional geocell reinforced cushion layer is formed by filling a three-dimensional geocell with potassium magnesium phosphate cement solidified sludge; the shallow soft soil solidification layer is formed by in-situ stirring and solidification of soft soil through a soil solidifying agent; a pile bearing structure of a cement mixing pile group; and a bearing layer; the upper end of the pile bearing structure of the cement mixing pile group extends into the shallow soft soil solidification layer, and the lower end of the pile bearing structure of the cement mixing pile group extends into the bearing layer. On the basis of the concept of using local materials and treating waste with waste, an environment-friendly sludge curing technology is introduced, and in-situ curing of soil between shallow piles is conducted, a cement mixing pile group serves as a pile bearing structure, a three-dimensional geocell replaces a two-dimensional geogrid, and sludge solidified soil serves as a reinforced cushion layer filling material and roadbed filler; the method has the outstanding advantages of improving the rib-soil interface friction force, controlling differential settlement, preventing lateral deformation and the like.
本发明公开了一种桩承式软土路基加固结构和加固方法，所述桩承式软土路基加固结构包括：包括自上而下依次设置的：固化淤泥填筑路堤层；三维土工格室加筋垫层，由磷酸钾镁水泥固化淤泥填充三维土工格室形成；浅部软土固化层，由土壤固化剂原位搅拌软土固化形成；水泥搅拌桩群的桩承结构；和持力层；所述水泥搅拌桩群的桩承结构的上端伸入所述浅部软土固化层，下端伸入所述持力层。本发明基于就地取材、以废治废理念，引入淤泥环保固化技术，通过浅层桩间土原位固化、水泥搅拌桩群作为桩承结构、三维土工格室代替二维土工格栅、淤泥固化土作为加筋垫层填充材料及路基填料等方式，具备提高筋土界面摩擦力、控制不均匀沉降、防止侧向变形等突出优势。
Pile-supported soft soil roadbed reinforcing structure and reinforcing method
The invention discloses a pile-supported soft soil roadbed reinforcing structure and a reinforcing method. The pile-supported soft soil roadbed reinforcing structure comprises a solidified sludge filling embankment layer, a pile-supported soft soil roadbed reinforcing layer, a pile-supported soft soil roadbed reinforcing layer and a pile-supported soft soil roadbed reinforcing layer which are sequentially arranged from top to bottom, the three-dimensional geocell reinforced cushion layer is formed by filling a three-dimensional geocell with potassium magnesium phosphate cement solidified sludge; the shallow soft soil solidification layer is formed by in-situ stirring and solidification of soft soil through a soil solidifying agent; a pile bearing structure of a cement mixing pile group; and a bearing layer; the upper end of the pile bearing structure of the cement mixing pile group extends into the shallow soft soil solidification layer, and the lower end of the pile bearing structure of the cement mixing pile group extends into the bearing layer. On the basis of the concept of using local materials and treating waste with waste, an environment-friendly sludge curing technology is introduced, and in-situ curing of soil between shallow piles is conducted, a cement mixing pile group serves as a pile bearing structure, a three-dimensional geocell replaces a two-dimensional geogrid, and sludge solidified soil serves as a reinforced cushion layer filling material and roadbed filler; the method has the outstanding advantages of improving the rib-soil interface friction force, controlling differential settlement, preventing lateral deformation and the like.
本发明公开了一种桩承式软土路基加固结构和加固方法，所述桩承式软土路基加固结构包括：包括自上而下依次设置的：固化淤泥填筑路堤层；三维土工格室加筋垫层，由磷酸钾镁水泥固化淤泥填充三维土工格室形成；浅部软土固化层，由土壤固化剂原位搅拌软土固化形成；水泥搅拌桩群的桩承结构；和持力层；所述水泥搅拌桩群的桩承结构的上端伸入所述浅部软土固化层，下端伸入所述持力层。本发明基于就地取材、以废治废理念，引入淤泥环保固化技术，通过浅层桩间土原位固化、水泥搅拌桩群作为桩承结构、三维土工格室代替二维土工格栅、淤泥固化土作为加筋垫层填充材料及路基填料等方式，具备提高筋土界面摩擦力、控制不均匀沉降、防止侧向变形等突出优势。
Pile-supported soft soil roadbed reinforcing structure and reinforcing method
一种桩承式软土路基加固结构和加固方法
YIM MYUNG-GIL (author) / WANG DONGXING (author) / PU LONGJIN (author) / LI SHIZHEN (author) / ZHU JIAYE (author)
2022-05-17
Patent
Electronic Resource
Chinese
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