新型全预制叠合剪力墙体及其结构体系的抗震性能研究

Large efforts are focusing on the economical multi-story and high-rise housing and office construction recently in China. Based on the engineering concept and principle of sustainable development, a new full prefabricated laminated wall panel and its structural system are proposed in this research. The new structural system takes the independent functional unit for factory prefabricating, and all-assembly modular cell technique is applied for the field erect, to ensure the structure in its whole life cycle, including the construction, maintenance, remove and re-use stages, is ultimately satisfied the rules of energy saving and environmental protection, as well as to meet the requirements of sustainable development. According to the characteristics of the new structural system, theoretical and numerical analyses, static tests on full scale wall panels and shake table tests on reduced-scale model are employed for the research work, followed a technical route from component to overall model structure and from model test to actual engineering project. The comprehensive studies on the bearing mechanisms and hysteretic model of the laminated wall, the main structural member of the proposed structural system, and the seismic capacity of the new full prefabricated laminated concrete wall structure will be carried out. Through the potential findings of the seismic behavior of the structural system and measure for seismic performance improvement, the goal of the project is to push the new structural system going to the practical engineering application, as well as a promotion to the sustainable upgrade on the national construction industry.

本项目以我国现阶段的大量多高层经济型居住及办公房屋建设为背景，基于工程可持续发展的理念和原则，提出了一种新的全预制叠合剪力墙体及其结构体系。该结构体系以具有独立功能的结构单元为预制对象，采用模块化全装配技术，确保结构在其建造、维护、拆除和再利用等环节最大限度地实现节能环保，以满足工程可持续发展的要求。针对该结构体系的特点，采用理论研究、数值分析、足尺墙体模型低周反复加载试验和缩尺整体结构模型模拟地震振动台试验相结合的方法，遵循从构件到整体、从模型结构到实际工程的技术路线，开展该结构体系关键结构构件（全预制叠合墙体）的承载机理、力学模型和全预制叠合剪力墙结构体系的整体抗震性能研究，探讨全预制叠合墙体和全预制叠合剪力墙结构的抗震性能及其评价方法和提高其抗震性能的改进措施，以促进该结构体系的工程应用，推动国家建筑产业的可持续发展升级。

项目结合我国现阶段大规模建筑工业化和大力推动智能建造的重大需求，采用理论研究、数值仿真分析和模型试验相结合的方法，对一种新型全预制叠合剪力墙体及其结构体系的抗震性能进行了系统研究。该新结构体系采用全新的“螺栓-钢梁-套筒”连接方案，为全装配干式连接方式，完全避免了现场湿作业，适合大规模模块化预制建筑建造。项目所完成的工作内容包括：1）新型全预制叠合剪力墙体的足尺模型低周反复加载试验；2）新型全预制叠合剪力墙体的破坏模式、受力机理和抗震性能分析；3）新型全预制叠合剪力墙体的数值模拟方法的建立；4）全预制叠合剪力墙结构体系的整体模型模拟地震振动台试验；5）新型全预制叠合剪力墙结构的受力机理和抗震性能分析，包括横向拉结螺栓的受力机理和竖向套筒的传力机制研究等；6）新型全预制叠合剪力墙结构体系的数值模拟方法的建立；7）新型全预制叠合剪力墙体的实用设计方法及构造措施研究。项目给出了该新结构体系从连接节点、墙体构件到结构体系抗震性能的系列试验结果、数值分析模型和仿真分析结果，以及全装配式连接节点和该结构体系的设计方法和构造措施，供实际工程设计使用。综合项目研究工作成果，本课题所提出的全预制叠合剪力墙体连接方案及其结构体系能可靠地传递和抵御地震荷载。新型全预制叠合剪力墙结构体系具有很好的抗震性能，可以在实际工程中大量推广使用。