绥棱县水利技术人员过去在粱式工程设计工作中,为了减少冻害因素,节省工程投资,多是采用缩减支墩个数的办法,从而增大了单跨梁的长度,这样就使小体积钢筋混凝土构件的纵向温变值有了显著的增加,温变应力过分集中,因此造成不同程 In the past, the water technical personnel of the Suoleng County worked to reduce the frost damage factors and save the project investment in the past. In order to reduce the number of piers, the length of the single span beam was increased, which resulted in a small volume. The longitudinal temperature change value of reinforced concrete members has increased significantly, and the temperature-varying stress is excessively concentrated, resulting in different distances.