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(1)《铁路路基设计规范》规定护墙可采用50号、75号两种水泥沙浆砌筑,没有规定各自的适用范围。一些深路堑中的高大护墙,有的为两级或两级以上护墙,施工中采用了50号水泥沙浆砌筑(建设单位、设计单位和施工单位均认为符合要求)。再加上砌筑质量不好,护墙成了危墙。例如:浙赣线K597～+520～+702深路堑中的两级护墙,1992年建成,验收时因左侧护墙开裂等原因未通过,将左侧护墙做了些局部返工(凿缝重勾)以后,至1993年才交给工务段。1994年6月又发生右侧护墙开裂、臌凸,危及行车安全,只好拆除重建。造
(1) The Code for Design of Railway Embankment stipulates that two kinds of cement mortar masonry, No. 50 and No. 75, can be used for retaining wall, and there is no stipulation on the applicable scope of each. Some of the deep cuttings in the high retaining wall, and some two or more than two retaining walls, the construction of 50 cement mortar masonry (construction units, design units and construction units are considered to meet the requirements). Coupled with the poor quality masonry, parapet walls have become dangerous. For example: Zhejiang-Jiangxi line K597 ~ + 520 ~ + 702 deep cut in the two retaining walls, built in 1992, acceptance due to the left side wall cracking and other reasons did not pass, the left side of the retaining wall to do some rework (chisel After the heavy hook), until 1993 to the work section. June 1994 and the right side of the parapet cracking occurs, 臌 convex, endanger driving safety, had to demolition reconstruction. Made