海外工程岩土抗震参数选取

随着境外项目的增多,经常遇到海外工程如何选用岩土抗震参数的问题。部分国家抗震区划图或研究资料不足,且中标抗震体系与海外差异较大,参数选取往往会影响整个项目的造价。关于岩土抗震参数的研究很多,但系统性的总结研究不多,特别是针对具体项目如何应用研究不足,工程实例少,实用性不强。结合某境外地勘项目,对比分析国外标准与中标抗震参数的差异以及选取时的注意事项,提出了参数选取流程。给出了部分工程案例分析,为以后海外项目抗震参数的选取提供指导意见。

Selection of geotechnical seismic parameters for overseas projects

With the increase of overseas projects,there are often problems in how to select geotechnical seismic parameters.Some national seismic zoning maps or research data are insufficient,and the Chinese standard seismic system is quite different from overseas countries,and the selection of parameters will affect the cost of the whole project.There are a lot of researches on seismic parameters of geotechnical engineering,but there are few systematic summary researchs,especially on how to apply them to specific projects,with few engineering examples and weak practicability.Combined with an overseas geotechnical investigation project,this paper makes a comparative analysis of the differences between foreign standards and Chinese standards in seismic parameters as well as the precautions in selection,and puts forward the process of parameter selection.Some engineering cases are analyzed to provide guidance for the selection of seismic parameters of overseas projects.