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A platform for research: civil engineering, architecture and urbanism
Construction method for controlling settlement of railway ballast bed based on geogrid
The invention relates to a construction method for controlling settlement of a railway ballast bed based on a geogrid. The construction method comprises the following steps: firstly, selecting the aperture shape and the aperture size of the geogrid according to the speed of a railway line and the grain composition of used railway ballast; then, the tensile rigidity and tensile strength of the geogrid are selected according to the train running speed and the axle load; the laying position of the geogrid is determined, and the position can prevent the geogrid from being damaged by tamping; different geogrid laying methods are selected for reconstruction of a newly-built line and an existing line; when a next roll of geogrid is laid, the next roll of geogrid needs to be in lap joint with a previous roll of laid geogrid; and finally, railway ballasts on the geogrids are laid, tamping and tamping are conducted, the compaction degree of the ballast bed is inspected, and a basis is provided for solving the problem of railway site ballast bed settlement control.
本发明涉及一种基于土工格栅的控制铁路道床沉降的施工方法，首先根据铁路线路的车速以及所使用道砟颗粒级配选择土工格栅的孔径形状和孔径大小；其后，根据列车运行速度和轴重选择土工格栅的抗拉刚度和抗拉强度；确定土工格栅铺设的位置，该位置能避免捣固对土工格栅造成破坏；对新建线路和既有线路改造选择不同的土工格栅铺设方法；在铺设下一卷土工格栅的时候，需要将其与上一卷铺设好的土工格栅进行搭接；最后铺设土工格栅上面的道砟，进行捣固夯实，并对道床压实度进行检验，为解决铁路现场道床沉降控制难题提供依据。
Construction method for controlling settlement of railway ballast bed based on geogrid
The invention relates to a construction method for controlling settlement of a railway ballast bed based on a geogrid. The construction method comprises the following steps: firstly, selecting the aperture shape and the aperture size of the geogrid according to the speed of a railway line and the grain composition of used railway ballast; then, the tensile rigidity and tensile strength of the geogrid are selected according to the train running speed and the axle load; the laying position of the geogrid is determined, and the position can prevent the geogrid from being damaged by tamping; different geogrid laying methods are selected for reconstruction of a newly-built line and an existing line; when a next roll of geogrid is laid, the next roll of geogrid needs to be in lap joint with a previous roll of laid geogrid; and finally, railway ballasts on the geogrids are laid, tamping and tamping are conducted, the compaction degree of the ballast bed is inspected, and a basis is provided for solving the problem of railway site ballast bed settlement control.
本发明涉及一种基于土工格栅的控制铁路道床沉降的施工方法，首先根据铁路线路的车速以及所使用道砟颗粒级配选择土工格栅的孔径形状和孔径大小；其后，根据列车运行速度和轴重选择土工格栅的抗拉刚度和抗拉强度；确定土工格栅铺设的位置，该位置能避免捣固对土工格栅造成破坏；对新建线路和既有线路改造选择不同的土工格栅铺设方法；在铺设下一卷土工格栅的时候，需要将其与上一卷铺设好的土工格栅进行搭接；最后铺设土工格栅上面的道砟，进行捣固夯实，并对道床压实度进行检验，为解决铁路现场道床沉降控制难题提供依据。
Construction method for controlling settlement of railway ballast bed based on geogrid
一种基于土工格栅的控制铁路道床沉降的施工方法
ZHAO CHUANG (author) / LUO ZHENG (author) / BIAN XUECHENG (author) / CHEN YUNMIN (author)
2022-07-08
Patent
Electronic Resource
Chinese
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