美国UBC97与中国建筑抗震设计规范近断层系数对比

发布时间：2018-07-03 04:38

本文选题：近断层系数 + 美国建筑统一标准　；参考：《地震工程与工程振动》2016年05期

【摘要】：本文介绍了美国《Uniform Building Code》1997使用Ca和Cv双参数确定抗震设计反应谱的方法。UBC97中规定,同时满足4个方面的条件:(1)建筑位于抗震设防4区;(2)断层是发震断层;(3)断层具备发生不小于M_w6.5级地震的能力;(4)断层距小于15 km,才需考虑近断层系数。近断层反应谱与非近断层反应谱主要有等效峰值加速度、等效峰值速度和反应谱特征周期3个方面的增大。隔震结构的近断层增大系数不小于传统抗震结构的近断层增大系数。中国建筑抗震设计规范只规定了隔震结构和进行性能抗震设计的结构,在同时满足发震断层和断层距2个方面的条件,才需考虑近断层增大系数。通过对比发现,UBC97关于近断层系数的规定更加系统、明确和全面。
[Abstract]:This paper introduces the method of determining the response spectrum of seismic design by using Ca and CV in < uniform Building Code > 1997 in the United States. At the same time, four conditions are satisfied: (1) the building is located in the 4th area of seismic fortification; (2) the fault is a seismogenic fault; (3) the fault has the ability to produce not less than Mw6.5 earthquake; (4) the fault distance is less than 15 km before the near-fault coefficient is considered. The near fault response spectrum and the non near fault response spectrum mainly have the equivalent peak acceleration, the equivalent peak velocity and the characteristic period of the response spectrum. The near fault increasing coefficient of isolated structure is not less than that of traditional seismic structure. The code for seismic design of buildings in China only prescribes isolation structures and structures for seismic performance design. The near fault increase coefficient should be considered only when the seismic occurrence fault and fault distance are satisfied at the same time. It is found that the near fault coefficient of UBC97 is more systematic, clear and comprehensive.
【作者单位】：云南省地震工程研究院;中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室;
【基金】：中央级公益性研究所所长基金(2013B20) 国家科技支撑计划项目(2014BAK03B01-06) 国家自然科学基金项目(51308517) 黑龙江自然科学基金项目(E2015069&E2015070)~~
【分类号】：TU352.11

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