国内外内河航道整治工程护面块体稳定性计算对比

Comparison of stability calculation for armor block in inland waterway regulation project by Chinese and international methods

水流冲刷作用下整治建筑物护面块体的稳定性计算是内河航道整治工程设计的重要组成部分。随着国内设计企业参与海外工程越来越多,设计人员掌握国内外工程中常用的不同标准和计算方法尤为重要。介绍了国外工程中常用的Pilarczyk方法、英国水力研究院推荐的Escarameia and May方法、美国标准Maynord方法以及国内《航道工程设计规范》和《堤防工程设计规范》中的设计方法。通过对比,总结梳理各种计算方法的差异性,并通过工程实例进一步验证。结果表明,中国规范操作相对简单,但考虑的影响因素较少;国外常用方法考虑更为全面,适用范围更广,但计算过程相对复杂。

Stability calculation for armor block in regulation structures under current scour is important for the design of an inland waterway regulation project.As more and more Chinese design companies are involved in overseas projects,design engineers must master different standards and calculation methods commonly used in projects both in China and abroad.This paper introduces the Pilarczyk method commonly adopted in foreign projects,the Escarameia and May method recommended by HR Wallingford,the American standard Maynord method,and methods proposed in the Design Code for Waterway Engineering and Code for design of levee project of China.Through comparison,the paper summarizes the differences between these calculation methods and further verifies them through engineering examples.The results show that calculation based on Chinese codes is relatively easy to be implemented,but it only considers fewer influencing factors.On the contrary,the commonly used foreign methods are more comprehensive and have a wider application range,but they involve a relatively complicated process.