在铁路建筑物中,一般地说,工民建及给水工程建筑物仅承受静载作用,而桥梁不仅承受静载,还承受列车反复动载作用,因而产生所谓疲劳问题,对钢筋就有附带的特殊要求。下面以桥梁为例,综述使用钢筋的有关问题。一、使用国产钢筋 In railway structures, in general, workers and civil works and water supply engineering structures are subjected to static load only. However, bridges not only bear static load but also undergo repeated dynamic loading of trains, causing so-called fatigue problems and attaching steel bars Special requirements. Take the bridge below as an example to summarize the problems related to the use of steel bars. First, the use of domestic steel