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城市街道或厂、矿区内,常因安装煤气管道、热力管线等将原有混凝土路面垂直破开,砌筑地沟,在其上面扣上承重的钢筋混凝土盖板。传统的作法是:先预制钢筋混凝土盖板,上部预留吊环,待地沟墙砌筑一定高度后,上部坐水泥砂浆,盖板扣上后再割除吊环,投入使用。但由于坐浆厚度不易掌握,常出现盖板翘棱或端部标高不一致,有时还因盖板就位调整用撬棍拨,导致坐浆走动,其后果必然造成盖板受力不均,降
Urban streets or factories, mining areas, often due to the installation of gas pipelines, heat pipelines, etc. The original concrete pavement broken vertically, masonry ditches, buckle on the load-bearing reinforced concrete cover. The traditional practice is: first prefabricated reinforced concrete cover, the upper part of the rings, to be ditched a certain height of the ditch wall, the upper sit cement mortar, cover the buckle and then cut off, put into use. However, due to the thickness of the seat is not easy to grasp, often appear Alice tilt or inconsistent end elevation, and sometimes due to cover adjustment in place with a crowbar dial, resulting in sitting around the pulp, the consequences will inevitably result in uneven cover force, down