A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-speed railway ballastless track foundation and treatment method
The invention relates to the technical field of railway engineering, in particular to a high-speed railway ballastless track foundation and a treatment method.The high-speed railway ballastless track foundation comprises gravel piles, CFG piles, pile caps, a cushion layer, an embankment body, a foundation bed bottom layer and geotechnical cloth, preloaded filling soil is arranged above the geotechnical cloth, and the foundation treatment mode that the discrete gravel piles and the rigid CFG piles are combined is adopted; the liquefaction characteristic of the sandy soil is solved by utilizing the replacement and compaction effects of the gravel piles; the CFG piles penetrate through the liquefied sand soil layer, so that the rigidity and the bearing capacity of the foundation are improved, and the deformation of the foundation is reduced; and finally, after preloading for not less than 6 months, post-construction settlement after embankment filling is eliminated. The treatment method is simple to operate, meets the environmental protection requirement and has wide popularization and application prospects.
本发明涉及铁路工程技术领域，具体涉及一种高速铁路无砟轨道地基及处理方法，包括碎石桩、CFG桩、桩帽、垫层、路堤本体、基床底层和土工布，土工布的上方设置有堆载预压填土，采用散体碎石桩和刚性CFG桩组合的地基处理方式，利用碎石桩的置换和挤密作用，解决了砂土的液化特性；利用CFG桩穿透液化的砂土层，提高了地基的刚度和承载力，减少地基变形；最后经过不少于6个月的堆载预压，消除路堤填筑后的工后沉降。该处理方法操作简单，符合环保要求，具有广阔的推广应用前景。
High-speed railway ballastless track foundation and treatment method
The invention relates to the technical field of railway engineering, in particular to a high-speed railway ballastless track foundation and a treatment method.The high-speed railway ballastless track foundation comprises gravel piles, CFG piles, pile caps, a cushion layer, an embankment body, a foundation bed bottom layer and geotechnical cloth, preloaded filling soil is arranged above the geotechnical cloth, and the foundation treatment mode that the discrete gravel piles and the rigid CFG piles are combined is adopted; the liquefaction characteristic of the sandy soil is solved by utilizing the replacement and compaction effects of the gravel piles; the CFG piles penetrate through the liquefied sand soil layer, so that the rigidity and the bearing capacity of the foundation are improved, and the deformation of the foundation is reduced; and finally, after preloading for not less than 6 months, post-construction settlement after embankment filling is eliminated. The treatment method is simple to operate, meets the environmental protection requirement and has wide popularization and application prospects.
本发明涉及铁路工程技术领域，具体涉及一种高速铁路无砟轨道地基及处理方法，包括碎石桩、CFG桩、桩帽、垫层、路堤本体、基床底层和土工布，土工布的上方设置有堆载预压填土，采用散体碎石桩和刚性CFG桩组合的地基处理方式，利用碎石桩的置换和挤密作用，解决了砂土的液化特性；利用CFG桩穿透液化的砂土层，提高了地基的刚度和承载力，减少地基变形；最后经过不少于6个月的堆载预压，消除路堤填筑后的工后沉降。该处理方法操作简单，符合环保要求，具有广阔的推广应用前景。
High-speed railway ballastless track foundation and treatment method
一种高速铁路无砟轨道地基及处理方法
ZHENG LIUYI (author) / FAN HOUGUI (author) / CHENG YUN (author) / ZHANG YI (author) / ZOU XINGPU (author) / MOMER (author) / WANG LIANG (author) / LIAO CHENGXIN (author) / CHENG QIHANG (author) / LI ZUOXIANG (author)
2022-07-29
Patent
Electronic Resource
Chinese
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