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损失比是震害损失评估中一个至关重要的参数,它的取值是损失评估工作中一个十分重要的环节。尤其是大震时,大范围的房屋或各类工程结构遭到破坏,损失比取值微小的变化就会引起总损失值有较大的变动。因此,能够合理地给出损失比的取值范围对震害损失评估工作具有重要意义。针对铁路系统各组成部分的结构特点,采用适当的方法分别给出了铁路线路、挡土墙、梁式桥、拱桥、隧道、供电及通信电线路、机械设备和附属房屋建筑的损失比建议值范围,并与现行的国家标准进行了对比分析。
The loss ratio is a crucial parameter in earthquake damage assessment. Its value is a very important link in the loss assessment. Especially when a large earthquake occurs, a wide range of houses or various types of engineering structures are damaged. A slight change in the loss ratio will cause a large change in the total loss value. Therefore, it is of great importance to evaluate the loss of earthquake damage reasonably when the range of loss ratio is given. According to the structural characteristics of each component of the railway system, the loss of railway lines, retaining walls, beam bridges, arch bridges, tunnels, power supply and telecommunication lines, mechanical equipment and ancillary buildings are given respectively by the appropriate methods. And compared with the current national standards.