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| PRELIMINARY ANALYSIS ON CRACKING OF SUBGRADE IN QINGSHUIHE EXPERIMENTAL SECTION OF QINGHAI-TIBET RAILWAY |
| Wang Yinsheng，Jia Haifeng，Li Yong，Dou Shun |
| (Northwest Research Institute，China Railway Engineering Corporation，Lanzhou 730000 China) |
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Abstract There are many cracks in subgrade in Qingshuihe experimental section after a freezing-thawing cycle. Different quantity of cracking occurs in the subgrade constructed by different engineering measures. Based on detailed investigation information of subgrade in Qingshuihe experimental section，the occurrence reason of cracking and classification of the cracking are studied. The situations of cracking in subgrade constructed by different engineering measures are also analysed.
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Received: 02 March 2003
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2003, Vol. 22 
