| 基于多尺度模型的装配整体式混凝土框架结构抗震性能分析 |
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| 引用本文： | 张望喜,王冠杰,庞博,易伟建.基于多尺度模型的装配整体式混凝土框架结构抗震性能分析[J].重庆大学学报(自然科学版),2023,46(10):61-70. |
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| 作者姓名： | 张望喜 王冠杰 庞博 易伟建 |
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| 作者单位： | 1.湖南大学，土木工程学院，长沙 410082;2.湖南大学，工程结构损伤诊断湖南省重点实验室，长沙 410082 |
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| 基金项目： | 国家自然科学基金资助项目(52078201)。 |
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| 摘 要： | 装配工艺的要求和连接接缝的引用使装配式混凝土结构的数值模拟分析面临新的挑战，计算效率与模拟精度之间的矛盾变得更加突出。基于通用有限元软件ABAQUS，采用多尺度建模，模拟分析了装配整体式混凝土框架结构的抗震性能。首先，基于装配整体式混凝土梁柱子结构的试验数据，验证了多尺度单元界面连接方法的正确性。然后，对装配整体式混凝土框架结构的多尺度模型进行了静力推覆分析和动力弹塑性时程分析，并与现浇混凝土框架结构的地震响应和损伤情况进行比较。结果表明，多尺度建模能有效提高计算精度并降低计算成本，很好地模拟装配整体式混凝土框架结构的破坏特征和整体结构的抗震性能；与现浇结构相比，装配整体式框架结构在单向静力推覆作用下抗侧刚度更小、延性更好，在7度罕遇地震作用下抗震性能相近，顶层最大位移增大了3.8%；多尺度建模方法可用于装配式混凝土结构分析。
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| 关 键 词： | 装配整体式框架 多尺度模型 静力推覆分析 时程分析 抗震性能 |
| 收稿时间： | 2021/6/10 0:00:00 |
Seismic performance analysis of monolithic precast concrete frame structure based on multi-scale model |
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| ZHANG Wangxi,WANG Guanjie,PANG Bo,YI Weijian.Seismic performance analysis of monolithic precast concrete frame structure based on multi-scale model[J].Journal of Chongqing University(Natural Science Edition),2023,46(10):61-70. |
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| Authors: | ZHANG Wangxi WANG Guanjie PANG Bo YI Weijian |
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| Affiliation: | 1.College of Civil Engineering, Hunan University, Changsha 410082, P. R. China;2.Hunan Provincial Key Lab on Damage Diagnosis for Engineering Structures, Hunan University, Changsha 410082, P. R. China |
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| Abstract: | Due to assembly technology requirements and the introduction of connection seams, the numerical simulation and analysis of prefabricated concrete structures face new challenges. The trade-off between computational efficiency and simulation accuracy becomes increasingly apparent. Based on the general finite element software ABAQUS, in this study a multi-scale modelling approach is used to simulate and analyse the seismic performance of monolithic precast concrete frame structures. Firstly, the correctness of the interface connection method for multi-scale units is validated using experimental data from monolithic precast concrete beam and column substructure. Then, static pushover analysis and dynamic elastic-plastic time-history analysis are performed on the multi-scale model featuring a monolithic precast concrete frame structure. Subsequently, the seismic response and damage of this model are compared with those of a cast-in-place concrete frame structure. The results show that multi-scale modeling effectively improves calculation accuracy and reduces calculation costs. It aptly replicates the failure characteristics of monolithic precast concrete frame structure and overall seismic performance. Compared with the cast-in-place structure, the monolithic precast frame structure exhibits lower lateral stiffness and superior ductility under unidirectional static forces. When subjected to a rare 7-degree earthquake, their seismic performance remains comparable, with a modest 3.8% increase in maximum top-floor displacement. Furthermore, this study underscores the applicability of the multi-scale modelling method in the analysis of prefabricated concrete structures. |
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| Keywords: | assembled monolithic frame multi-scale model static pushover analysis time-history analysis seismic performance |
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