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本刊1979年第5期上发表了北京铁路分局魏庆昌同志《隧道内整体道床的病害分析和设计探讨》一文,觉得有一定的道理,但该文作者忽视了整体道床施工时的具体情况,在分析道床混凝土的开裂、失强时认为造成病害的主要原因是:“列车冲击荷载的经常作用,加剧道床底部与地基接触面的冲击磨擦,使地基表面的岩石颗粒磨碎……地下有压水反复冲淘而形成空洞”。实际上地下水所冲淘的并不是地基表面被冲击磨擦产生的岩石颗粒,而是施工时残留在道床混凝土与基底之间的一层厚薄不
Published in 1979 No. 5 1979 comrades of Beijing Railway Branch Comrade Wei Qingchang “Tunnel Road bed disease analysis and design of a discussion” that there is a certain truth, but the authors ignore the specific circumstances when the overall track bed construction, in the Analysis of roadbed concrete cracking, loss of strength that the disease caused by the main reason is: “The frequent impact of train load, exacerbating the contact between the foot bed and the foundation of the impact of friction, so that the ground surface of the rock particles crushed underground water pressure ... Amoy repeatedly washed to form a hollow. ” In fact, the scouring of groundwater is not the ground surface of the rock particles produced by the impact of friction, but the construction of the residual layer of concrete between the bed and the basement of a layer of thickness is not