基于静力法的中菲标准水平地震作用比较

Comparison about horizontal seismic action between Chineseand Philippine codes based on static procedure

为方便中国工程师与菲律宾工程师沟通,了解菲律宾标准水平地震作用计算,对中国GB 50011-2010《建筑抗震设计规范》及菲律宾NSCP C101-10《菲律宾国家结构标准》两部标准中静力方法计算水平地震作用进行介绍.对水平地震作用的各个参数如地震重要性系数、设防烈度、场地类别、场地动力放大系数谱、强度折减系数等一一进行对比分析,并进一步探讨中标及NSCP C101-10标准各参数的异同.通过具体算例比较中标及NSCP C101-10标准水平地震作用的大小,结果表明对于同一场地、同一建筑两部标准水平地震作用的高低主要取决于强度折减系数.

To exchange idea with Philippine engineers conveniently for Chinese engineer and to know calculation about horizontal seismic action of Philippine code NSCP C101-10 National Structural Code of the Philippines,this paper introduces calculation about horizontal seismic action based on static procedure in GB 50011-2010 Code for seismic design of buildings and NSCP C101-10.The comparison are made about the parameters of horizontal seismic action such as seismic importance factor,seismic design intensity,soil profile type,site dynamic amplification factor spectrum and strength reduction factor in Chinese and NSCP C101-10codes respectively;and then the further discussion is made about same and difference of these parameters.The total base shear is compared between Chinese code and NSCP C101-10code with examples.The results show that level of horizontal seismic action based on Chinese code and NSCP C101-10code for the same building in the same site depends on strength reduction factor R.