鲁甸地震震中某新建RC框架结构震害分析

来源 :第三届防灾减灾工程学术会议 | 被引量 : 0次 | 上传用户：junior9919

【摘要】

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【作者】

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钟湘林旭川胡阳阳王涛

【机构】

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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,河北三河065201

【出处】

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第三届防灾减灾工程学术会议

【发表日期】

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2015年12期

【关键词】

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混凝土框架结构破坏模式震害分析数值模拟

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2014年云南鲁甸发生6.5级地震,造成了大量建筑破坏与倒塌.在震中龙头山镇,出现了大面积抗震建筑底层垮塌的现象,特别是按《抗震设计规范》建筑建造的RC框架学校建筑仍出现了底层变形集中和"强梁弱柱"等破坏模式.在总结震害调查资料的基础上,采用弹塑性动力时程分析方法对龙头山镇的一栋新建三层学校框架结构进行了数值模拟.模型采用纤维梁单元建立纯框架模型,用厚壳模拟楼板对框架的加强效应.分析中的地震输入分别采用鲁甸地震中龙头山镇强震记录和E1-Centro地震波,并对该新建框架在地震中的行为进行了详细考察,结果表明,目前的抗震设计规范可使结构具有较高的延性和安全储备,但仍难以确保框架结构"强柱弱梁"破坏机制的实现。

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鲁甸地震震中某新建RC框架结构震害分析

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