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混凝土空间板柱结构震致落层倒塌的试验研究

吴 波 王明君 赵新宇

吴 波, 王明君, 赵新宇. 混凝土空间板柱结构震致落层倒塌的试验研究[J]. 工程力学, 2013, 30(1): 277-287. doi: 10.6052/j.issn.1000-4750.2011.06.0411
引用本文: 吴 波, 王明君, 赵新宇. 混凝土空间板柱结构震致落层倒塌的试验研究[J]. 工程力学, 2013, 30(1): 277-287. doi: 10.6052/j.issn.1000-4750.2011.06.0411
WU Bo, WANG Ming-jun, ZHAO Xin-yu. EXPERIMENTAL STUDY ON PANCAKE COLLAPSE OF RC SPACIAL SLAB-COLUMN STRUCTURES UNDER EARTHQUAKE[J]. Engineering Mechanics, 2013, 30(1): 277-287. doi: 10.6052/j.issn.1000-4750.2011.06.0411
Citation: WU Bo, WANG Ming-jun, ZHAO Xin-yu. EXPERIMENTAL STUDY ON PANCAKE COLLAPSE OF RC SPACIAL SLAB-COLUMN STRUCTURES UNDER EARTHQUAKE[J]. Engineering Mechanics, 2013, 30(1): 277-287. doi: 10.6052/j.issn.1000-4750.2011.06.0411

混凝土空间板柱结构震致落层倒塌的试验研究

doi: 10.6052/j.issn.1000-4750.2011.06.0411
基金项目: 国家自然科学基金重大研究计划培育项目(90815012);国家杰出青年科学基金项目(51025829);亚热带建筑科学国家重点实验室重点研究项目(2009ZA04)
详细信息
    通讯作者:

    吴 波

  • 中图分类号: TU375

EXPERIMENTAL STUDY ON PANCAKE COLLAPSE OF RC SPACIAL SLAB-COLUMN STRUCTURES UNDER EARTHQUAKE

  • 摘要: 开展了2个具有薄弱层的3层混凝土空间板柱结构模型的地震模拟振动台试验,采用加速度峰值逐级加大的El-Centro (NS) 波作为输入激励,直至薄弱层发生落层倒塌。量测了倒塌前、倒塌后模型各层的水平加速度响应,以及倒塌碰撞引发的薄弱层及其下层楼板的竖向加速度响应。模型M-2相比于模型M-1额外施加了附加配重。试验结果表明:1) 随着地震损伤程度的增加,模型的扭转效应有所增大;2) 倒塌前模型M-1和模型M-2的基本频率仅比初始值分别降低8.9%和4.7%,采用频率改变幅度进行结构倒塌预警可能是不现实的;3) 倒塌碰撞导致模型各层的水平加速度出现短时剧烈波动,波动期间模型M-1和模型M-2各层的绝对加速度最大值介于5g~10g之间,分别为倒塌前各层绝对加速度最大值的5倍~20倍和10倍~50倍;4) 倒塌碰撞引发的楼板竖向加速度高达30g~40g。
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  • 刊出日期:  2013-01-25

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