爆炸作用下建筑结构抗连续倒塌控制理论与方法

With the urgent needs of blast resistant protection and design of civil structures in China, this project is planned to systematically carry out researches on theory and method for progressive collapse resistance and control of building structures under blast load or the combined effects of blast and fire, aimed at the international forefront of the related fields. Firstly, the damage and failure mechanical model for building materials and structural components under blast load or the combined effects of blast and fire will be studied for further establishment of the dynamic constitutive model and failure criteria for typical building materials, and the element model for structural elements. Secondly, through studying and establishing the effective progressive collapse analysis method for building structures under blast load or the combined effects of blast and fire, the progressive procedure and damage of typical building structures will be simulated to investigate their progressive collapse mechanism and modes. Finally, the relationship between the possible collapse modes for building structures under blast load or the combined effects of blast and fire will be investigated. Based on the results, the constructional measures, intelligent control methods and new structural systems, which can be used to prevent the progressive collapse of building structures, would be proposed. Theory and method of progressive collapse resistance and control of building structures will be established accordingly. The achievements of this project will provide solid theoretical foundations and technical supports for progressive collapse resistant design of new buildings, progressive collapse capacity evaluation and retrofit of exist buildings and establishment of progressive collapse resistant design standards of building structures, improving the safety of building structures under possible blast load or the combined effects of blast and fire.

本项目拟针对我国民用建筑结构抗爆防护的迫切需求，瞄准相关领域的国际前沿，系统开展爆炸荷载或与火灾联合作用下建筑结构抗连续倒塌控制理论与方法研究。通过研究爆炸荷载或与火灾联合作用下建筑材料和构件损伤破坏的力学模型，建立典型建筑结构材料的动态本构关系及失效准则，提出相应的结构构件的单元模型；通过研究爆炸荷载或与火灾联合作用下建筑结构连续倒塌的高效数值分析方法，模拟典型结构形式的建筑结构的连续倒塌过程，揭示建筑结构的连续倒塌机制与模式；通过研究爆炸荷载或与火灾联合作用下建筑结构倒塌模式间的关系，提出控制建筑结构倒塌过程的构造措施、智能控制方法以及新结构体系，建立建筑结构连续倒塌模式控制的理论与方法。研究成果将为新建建筑结构抗连续倒塌设计和既有建筑结构抗连续倒塌性能评估与加固设计提供坚实的科学技术支撑，从而提高大型建筑结构的抗连续倒塌能力，并为制订我国建筑结构抗连续倒塌设计标准提供重要的理论依据。

项目针对我国民用建筑结构抗爆防护的迫切需求，系统开展了爆炸荷载或与火灾联合作用下建筑结构抗连续倒塌控制理论与方法研究。通过研究爆炸荷载或与火灾联合作用下建筑材料和构件损伤破坏的力学模型，建立典型建筑结构材料的动态本构关系及失效准则，提出相应的结构构件的单元模型；通过研究爆炸荷载或与火灾联合作用下建筑结构连续倒塌的高效数值分析方法，模拟典型结构形式的建筑结构的连续倒塌过程，揭示建筑结构的连续倒塌机制与模式；通过研究爆炸荷载或与火灾联合作用下建筑结构倒塌式间的关系，提出控制建筑结构倒塌过程的构造措施以及控制方法，建立建筑结构连续倒塌模式控制技术。项目出版学术专著1本，发表期刊论文42篇，其中SCI检索27篇，EI检索14篇；申请国家专利4项；培养青年教师6名，培养博士生6名、硕士生20名。主办大型国际学术会议5次，出席国际学术会议并作报告10人次，其中特邀报告1人次。研究成果为新建建筑结构抗连续倒塌设计和既有建筑结构抗连续倒塌性能评估与加固设计提供了坚实的科学技术支撑，从而提高大型建筑结构的抗连续倒塌能力，并为制订我国建筑结构抗连续倒塌设计标准提供重要的理论依据。