可靠性理论在丁坝稳定分析中的应用探讨

Discussion on the application of reliability theory in stability analysis of spur dike

针对航道整治建筑物可靠度设计分析方法相对落后的现状,系统地阐述了丁坝可靠度设计的原理与方法。在对丁坝类整治建筑物现状调查及损毁原因分析的基础上,开展了抛石丁坝可靠度和设计使用年限的初步研究,给出抛石块体稳定受力模型,推导了丁坝可靠性功能函数和极限状态方程,可为整治工程设计和维护提供参考。

Considering the unadvanced reliability design and analysis of the waterway regulation structures at present, we expounded the principle and method of the spur dike＇s reliability design. Based on the status survey and the damage reason analy- sis of the spur dike regulation structures, we carried out the research on the reliability degree and the design working life of the spur dike, put forward the mechanical stability model of riprap blocks, and derived the performance function and limit state equation of the spur dike＇s reliability, which provide references for design and maintenance of regulation engineering.