【作者】 张宏仁；

【导师】 郑山锁；

【作者基本信息】 西安建筑科技大学 ， 结构工程， 2010， 硕士

【摘要】 型钢高强高性能混凝土(SRHSHPC)组合结构以其优良的抗震性能被广泛应用于实际工程中,而目前有关此类结构地震损伤的研究资料较少。本文通过试验研究、理论分析和数值模拟分析相结合的手段,对组合结构的损伤规律进行了深入研究,进而提出了一种适用于SRHSHPC框架结构的地震损伤模型。基于课题组前期进行的SRHSHPC框架结构拟静力试验研究结果,揭示了梁、柱构件破坏与局部结构破坏以及整体结构破坏三者之间的关系。在试验研究和理论分析的基础上,采用ANSYS分析软件对该试验模型进行了数值模拟分析,数值模型中合理考虑了混凝土与型钢之间的粘结滑移作用,重点得到了各个构件的滞回曲线,从而为整体结构损伤模型参数的确定提供了数据支撑。结合试验结果进行理论分析,根据SRHSHPC框架结构的损伤演化过程,通过合理假定,采用加权系数法建立了基于构件损伤的SRHSHPC框架结构地震损伤模型。在建立整体模型的过程中,通过比较分析,选取了位置权重系数和损伤值权重系数二者组合的形式作为结构层损伤权重系数。计算结果与试验结果的对比表明,本文所建立的地震损伤模型能够较好地描述SRHSHPC框架结构的地震损伤演化过程与损伤程度,反映构件损伤、局部结构损伤以及整体结构损伤三者之间迁移演化规律。更多还原

【Abstract】 Owing to excellent seismic behavior, steel reinforced high strength and high performance concrete(SRHSHPC)composite structures have been applied in the engineering widely. However, the references of seismic damage are less about SRHSHPC composite structures. In this paper, the damage properties of composite structures was studied by combining physical model experiment, theoretical analysis and numerical simulation, and then a damage model which is suitable for SRHSHPC composite structures was proposed.Based on the test of SRHSHPC frame structure carried out by companion previously, the relationship of member, local structure and global structure failure was studied. Then the ANSYS was used to simulate the test of SRHSHPC frame structure by considering the bond-slip effect between steel and concrete. Finally, the hysteretic curves of all members were obtained which can supply the data for determining the damage parameter.Combined physical model experiment and theoretical analysis, according to the damage evolution process of SRHSHPC frame structure, the seismic damage model of SRHSHPC frame structure was proposed using weighting coefficient method and given reasonable assumption. The combination of location weighting coefficient and damage index was used as structure story damage weighting coefficient to establish the global damage model by comparison and analysis. Comparison of the calculated results with test ones indicates that the seismic damage model given can appropriately describe the damage evolution process of SRHSHPC frame structure, and reflect the effect of migration and transformation from member damage to structure damage.更多还原