考虑结构-土-结构相互作用的区域建筑群震害评估
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朱钦泉(1995-),男,硕士研究生,主要从事建筑震害预测方法研究。E-mail:1376979522@qq.com。

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四川省国际科技创新合作/港澳台科技创新合作项目(2019YFH0120);国家自然科学基金面上项目(51978428)


Seismic damage assessment of regional buildings considering structure-soil-structure interaction
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    摘要:

    建筑群震害评估计算对城市区域地震损失评估和震后快速援助救灾有着重要意义。考虑到地震中建筑物相互作用对震害的影响,进行考虑结构间相互作用的区域建筑群震害评估计算。在已有的基于结构-土-结构动力相互作用(SSSI)分析的简化离散模型基础上,扣除基础转动对输出响应的影响,引入基础上部建筑结构非线性多自由度模型,得到考虑SSSI的简化的非线性多自由度离散模型,建立考虑SSSI的区域建筑群震害评估方法。以四川大学望江校区的建筑群在汶川地震中的震害评估为例,采用该方法对该校区建筑群在汶川地震中的震害进行评估计算。同时,也对未考虑SSSI情况下的该校区建筑群震害进行计算。运用HAZUS对建筑群在汶川地震中的震害进行计算。通过对比分析实际震害调查数据、HAZUS震害计算结果和本文建筑群震害计算结果可知,相比HAZUS震害计算结果,本文建筑群震害计算结果更接近实际震害调查数据;与未考虑SSSI的建筑群震害计算结果相比,考虑SSSI的建筑群震害计算结果精确度更高,更能反映建筑群的实际震害情况。

    Abstract:

    The earthquake damage assessment of buildings is of great significance to the assessment of earthquake loss in urban areas and the rapid relief after earthquake. In this paper, the seismic damage assessment of regional buildings considering the interaction between structures was carried out. The existing simplified discrete model based on the analysis of structure-soil-structure dynamic interaction (SSSI) was first adopted. On this basis, the influence of foundation rotation on the output response was deducted, and the nonlinear multi-degree of freedom model of superstructure was introduced. Then, the simplified nonlinear multi-degree of freedom discrete model considering SSSI was obtained, and the seismic damage assessment method of regional buildings considering SSSI was established. Finally, the seismic damage assessment of buildings in Wangjiang Campus of Sichuan University during the Wenchuan earthquake was carried out by using the proposed method. The seismic damage of buildings in Wangjiang Campus without considering SSSI was also calculated by using the HAZUS. The actual seismic damage survey data, the HAZUS calculation results, and the calculation results of the proposed method in this paper were compared and analyzed. The results indicated that compared with the HAZUS results, the seismic damage calculation results of the proposed method are closer to the actual survey data; compared with the seismic damage calculation results of buildings without considering SSSI, the accuracy of those considering SSSI is higher and can better reflect the actual earthquake damage of buildings.

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朱钦泉,熊峰,葛琪,吕洋,翟盼盼.考虑结构-土-结构相互作用的区域建筑群震害评估[J].地震工程学报,2022,44(4):835-843. ZHU Qinquan, XIONG Feng, GE Qi, Lü Yang, ZHAI Panpan. Seismic damage assessment of regional buildings considering structure-soil-structure interaction[J]. China Earthquake Engineering Journal,2022,44(4):835-843.

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  • 在线发布日期: 2022-08-04