摘要
本文通过介绍中国、日本、美国、英国、挪威的相关管道抗震规范,阐述了目前管道应变设计和性能设计的理念、方法以及对地震作用输入的要求。通过比较各国管道抗震设计规范,保证震后管道维持其服务功能的抗震设计理念已经得到了全世界范围的认可。现在的管道设计正向性能设计的方向发展,并提出了两级抗震设防的方法。其中,第二级以管道不发生泄漏为抗震设防目标,对管道的地震安全性评价工作提出了更高的要求,管道设计需要的地震动和地面永久变形参数也越来越多。在目前管道工程的地震安全性评价工作中,存在概率方法和确定性方法这两种方法并举的局面。针对管道的抗液化和滑坡设计,地面永久位移可以利用分解的地震安全性评价概率方法得到。针对管道的抗断设计,断层未来位错量的估计方法现在仍以确定性方法为主,概率方法因为断层位错量沿着破裂带的分布较为复杂仍有待进一步研究。
The idea and the request of seismic parameters for pipeline＇s performance design are introduced by comparing different countries＇ seismic codes, including China, Japan, USA and etc. The seismic design target obtained the world scope approval is that the pipeline continues to maintain its service function after an earthquake. At present, the pipeline seismic design is developing to the direction of Performance Based Design , and two levels of earthquake resistances garrisons has been proposed. The target of second level is avoiding the pipeline divulges after a scenic strong earthquake, leading a higher request to the evaluation of seismic safety for the pipeline engineering sites. The pipeline performance based design needs more parameters of strong ground motion and the ground permanent deformation. Different from the other engineering, both PSHA and DSHA are adopted to evaluate the seismic safety for a to estimate the PGD induced by liquefacti still determined by DSHA primarily, and pipeline engineering site. Disaggregate PSHA is proposed on and landslide. The PGD induced by fault movement is PSHA needs further studies.
出处
《国际地震动态》
2007年第9期29-35,共7页
Recent Developments in World Seismology
基金
国家科技支撑计划项目2006BAC13B02"地下工程与长输管线地震作用输入"
