预压装配式再生混凝土框架抗震性能及多性能目标协同优化

The use of precast structure is an important way to achieve the goal of building and housing industrialization, and meanwhile it is accordant with the concept of green building and green construction like the recycled concrete technique. More economic benefits and social efficiency can be attained by combing precast structure with recycled concrete technique, and this combined technique has a wide application prospect. However, very few researches could be found on precast recycled concrete structures. This project intends to study the failure mechanism and seismic behavior of precast prestressed recycled concrete frames, and propose performance indices for evaluating the structural performances under different earthquake intensities. Theoretically analysis models will be established through theoretical analysis and used for parameter analysis. Based on the above parameter analysis results, the susceptibility of hysteresis behavior, energy dissipation, strength and performance indices to various parameters will be analyzed, and the bearing capacity and deformation features will be better understood as well. An efficient and robust multidisciplinary design collaborative optimization algorithm and an adaptive variable complexity ensemble meta-models construction method will be firstly developed, and then a performance-based seismic design optimization method will be established. The results of this project can provide experimental data, theoretical basis and calculation method for relevant studies, code revisions and practical project application.

装配式结构是实现建筑工业化和住宅产业化的重要途径，它与再生混凝土技术一样符合绿色建筑和绿色施工理念。两者结合，能发挥更大环境和社会效益，应用前景广阔，但目前预制装配式再生混凝土结构研究甚少。本项目拟通过预压装配式再生混凝土框架拟静力和拟动力试验，研究其破坏机理和抗震性能，建立其在各级地震作用下性能水准的量化指标。并结合理论分析，建立其理论分析模型，同时进行参数分析。基于参数分析结果，分析其滞回性能、耗能能力、强度、刚度和各种性能指标对不同参数的敏感性，以期深入了解其承载能力和变形规律。此外，还开发一种高效稳定的多学科设计协同优化算法及一种具有自适应能力的变复杂度组合近似模型构建方法，并在此基础上建立预压装配式再生混凝土框架基于多性能目标的抗震优化设计方法。本项目研究成果可为预压装配式混凝土结构和再生混凝土结构的相关研究、规范制定及工程应用提供试验数据、理论基础和计算方法。

装配式结构和再生混凝土结构符合绿色建筑和绿色施工理念，而装配式结构是实现建筑工业化和住宅产业化的重要途径。装配式再生混凝土结构则能产生更大环境和社会效益，应用前景广阔，而预制装配式再生混凝土结构可见文献很少。本项目拟通过再生混凝土框架梁-柱节点和预压装配式框架的抗震试验，研究了相关再生混凝土结构的破坏机理和抗震性能，建立其在各级地震作用下性能水准的量化指标。基于参数分析结果，分析其滞回性能、耗能能力、强度、刚度和各种性能指标对不同参数的敏感性，以期深入了解其承载能力和变形规律。此外，给出了预压装配式再生混凝土框架基于多性能目标的抗震优化设计方法。本项目研究成果可为预压装配式混凝土结构和再生混凝土结构的相关研究、规范制定及工程应用提供试验数据、理论基础和计算方法。