弧形铸钢支座在我国铁路小跨度桥梁上使用极其广泛。二十几年来,使用情况基本良好,但也发现一些应予重视的问题,即少量支座上座板锚栓断裂。在无产阶级文化大革命中,狠批了设计工作中的“三脱离”倾向,设计工作深入现场,在工人师傅的帮助下,曾先后四次对五个铁路局的重点病害桥作了认真的调查。现将调查情况及初步分析综述如下。支座锚栓病害程度不一。少数严重的,一孔梁一端的支座锚栓全部断掉,或一片梁一端的8个锚栓全部断光,病害轻的,一个支座上只断了一个或有的已弯折,但尚未断掉。在所调查过的病害支座上,锚栓断裂特征大同小 Arc cast steel bearings in China’s railway bridge using a very wide span. In the past two decades, the usage situation was basically good, but some problems that should be paid attention to were found. That is, a few anchor bolts on the anchor plate break. During the Great Proletarian Cultural Revolution, he severely criticized the tendency of “three departures” in the design work and conducted in-depth design work. With the help of workers’ masters, he conducted four serious investigations into the key disease bridges of the five railway administrations . The investigation and preliminary analysis are summarized below. Stand anchor bolt disease levels. A few serious, one hole at one end of the anchor bolts all broken off, or a piece of beam at the end of the eight anchor bolt all the light, the disease light, only a broken one or some have been bent, but Not broken yet. In the investigation of the disease support, anchor bolt fracture characteristics of the same size