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A platform for research: civil engineering, architecture and urbanism
High-speed railway ballastless track roadbed structure capable of preventing frost boiling and mud pumping and construction method of high-speed railway ballastless track roadbed structure
The invention provides a high-speed railway ballastless track subgrade structure capable of preventing frost boiling and mud pumping, a waterproof step is arranged on the longitudinal edge of a base plate of the subgrade structure, and a waterproof coating is arranged on the surface of the waterproof step; filling grooves with semicircular sections are formed in the transverse side surfaces of the base plates, and the filling grooves between the adjacent base plates and expansion joints above and below the filling grooves are filled with expansion sealing glue; cement is doped into graded broken stone of the graded broken stone foundation bed according to a certain proportion; a drainage layer composed of a capillary drainage plate and a sand cushion layer is arranged on the middle layer of the graded broken stone foundation bed, the tail end of the capillary drainage plate is communicated to a drainage blind ditch, and the drainage blind ditch is communicated with a drainage hole in the outer surface of the concrete shoulder pad through a drainage channel. The invention further provides a construction method of the roadbed structure, starting from three aspects of preventing rainwater from entering the surface layer of the foundation bed, improving and curing the surface layer of the foundation bed by grading broken stones, and optimizing and perfecting a drainage system, the disease problem is solved from the source, and the mud pumping disease of the ballastless track roadbed of the high-speed railway is effectively prevented.
本发明提供一种防止翻浆冒泥的高速铁路无砟轨道路基结构，该路基结构底座板纵向边缘设有隔水台阶，隔水台阶表面设有防水涂层；底座板横向侧表面开设有截面呈半圆形的填充槽，相邻底座板间的填充槽及其上下的伸缩缝内填充有膨胀封闭胶；级配碎石基床的级配碎石中，按照一定比例掺入水泥；级配碎石基床的中层设有由毛细排水板和砂垫层组成的排水层，毛细排水板的末端连通至排水盲沟，排水盲沟通过泄水通道连通混凝土护肩外表面的泄水孔。本发明还提供了上述路基结构的施工方法，从防止雨水进入基床表层、基床表层级配碎石改良固化、优化完善排水系统三个方面入手，从源头解决病害问题，有效防止高速铁路无砟轨道路基翻浆冒泥病害的发生。
High-speed railway ballastless track roadbed structure capable of preventing frost boiling and mud pumping and construction method of high-speed railway ballastless track roadbed structure
The invention provides a high-speed railway ballastless track subgrade structure capable of preventing frost boiling and mud pumping, a waterproof step is arranged on the longitudinal edge of a base plate of the subgrade structure, and a waterproof coating is arranged on the surface of the waterproof step; filling grooves with semicircular sections are formed in the transverse side surfaces of the base plates, and the filling grooves between the adjacent base plates and expansion joints above and below the filling grooves are filled with expansion sealing glue; cement is doped into graded broken stone of the graded broken stone foundation bed according to a certain proportion; a drainage layer composed of a capillary drainage plate and a sand cushion layer is arranged on the middle layer of the graded broken stone foundation bed, the tail end of the capillary drainage plate is communicated to a drainage blind ditch, and the drainage blind ditch is communicated with a drainage hole in the outer surface of the concrete shoulder pad through a drainage channel. The invention further provides a construction method of the roadbed structure, starting from three aspects of preventing rainwater from entering the surface layer of the foundation bed, improving and curing the surface layer of the foundation bed by grading broken stones, and optimizing and perfecting a drainage system, the disease problem is solved from the source, and the mud pumping disease of the ballastless track roadbed of the high-speed railway is effectively prevented.
本发明提供一种防止翻浆冒泥的高速铁路无砟轨道路基结构，该路基结构底座板纵向边缘设有隔水台阶，隔水台阶表面设有防水涂层；底座板横向侧表面开设有截面呈半圆形的填充槽，相邻底座板间的填充槽及其上下的伸缩缝内填充有膨胀封闭胶；级配碎石基床的级配碎石中，按照一定比例掺入水泥；级配碎石基床的中层设有由毛细排水板和砂垫层组成的排水层，毛细排水板的末端连通至排水盲沟，排水盲沟通过泄水通道连通混凝土护肩外表面的泄水孔。本发明还提供了上述路基结构的施工方法，从防止雨水进入基床表层、基床表层级配碎石改良固化、优化完善排水系统三个方面入手，从源头解决病害问题，有效防止高速铁路无砟轨道路基翻浆冒泥病害的发生。
High-speed railway ballastless track roadbed structure capable of preventing frost boiling and mud pumping and construction method of high-speed railway ballastless track roadbed structure
一种防止翻浆冒泥的高速铁路无砟轨道路基结构及其施工方法
WANG XIANG (author) / YAO CHENGZHI (author) / WANG YAN (author) / LI SHILIANG (author) / WANG YAFEI (author) / LI LI (author) / WANG YAWEI (author) / YANG QIXIANG (author) / WANG JUNTAO (author) / LEI MINGTANG (author)
2025-01-03
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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