Experimental Study on Prefabricated Track Column of Vehicle Depot Installed with Grouting Sleeve
In order to improve the construction efficiency of track engineering in metro depot and reduce the cross operation of multiple construction companies,the research of the engineering application of prefabricated track columns is necessary.Prefabricated track column connected by grouting sleeve was designed and a test section was built,the pull-out test of the track embedded casing and the horizontal limit pushover test of the column were carried out.The test results show that,the bearing capacity of the prefabricated track column in the grouting sleeve installation mode is consistent with the theoretical calculation.The connection of grouting sleeve is reliable,and its mechanical performance meets the requirements of the standard.According to the test destruction form,the weakness of the prefabricated track column are studied and analyzed,and the product design is optimized.According to the construction practice of the test section,the installation process of prefabricated track column is summarized and optimized.The conclusion is that the prefabricated track column adopts the rebar grouting sleeve mode,which avoids the cross construction.It is convenient to install,reliable in quality and stress,and can shorten the construction period,facilitate the collaborative work of multiple sections and multiple construction teams,and can greatly improve the construction efficiency and track engineering quality.
metroprefabrication and assemblytrack columngrouting sleevemechanical testing
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