本文针对单钢板-混凝土组合（Single Steel-plate Concrete Composite，简称HSC）安全壳结构的力学性能和应用开展研究。从局部构造、单元板件以及结构体系三个层次，综合运用试验研究、理论分析和数值模拟等手段，探究了HSC安全壳结构的静力和动力性能，提出了模拟分析方法以及设计优化建议。主要研究成果如下：（1）设计并完成了19组共39个HSC局部构造抗拉性能试验，重点研究了约束模式、对拉钢筋端部锚固形式、连接件形式以及混凝土强度等参数的影响，考察了试件的破坏模式、承载力、荷载-滑移特性以及应变发展规律，分析了不同局部构造形式的传力机理和变形特征，给出了设计建议。（2）基于塑性极限分析法，推导了HSC局部构造极限抗拉承载力理论模型。开发了HSC局部构造抗拉性能分析有限元模型，对局部构造的破坏模式、承载力、刚度以及延性进行模拟。通过与抗拉性能试验结果对比，验证了理论和有限元模型的准确性。基于有限元模型开展了抗拉性能参数分析，给出了优化建议。（3）设计并完成了17个HSC单元板件抗冲击性能试验，重点研究了结构形式、局部构造形式、配箍率、钢板厚度以及加劲肋作用的影响，考察了试件的破坏模式以及动力响应特性，分析了试件的损伤分布和变形特征。（4）开发了HSC单元板件抗冲击性能的有限元模型，对单元板件的破坏模式、变形状态以及动力响应特性进行模拟。通过与抗冲击性能试验结果对比，验证了有限元模型的准确性。针对采用端锚型搭接式构造（TBOHS）和钩接式构造（TBIJC）的单元板件，基于有限元模型开展了参数分析，提出了抗冲击临界速度评估方法。（5）基于验证后的商用客机有限元模型，开发了HSC安全壳结构抗飞机撞击分析有限元模型，对安全壳结构的破坏模式、损伤变形分布以及动力响应特性进行了模拟。模型对比并选取了优化的边界条件形式，考察了撞击工况以及结构形式对HSC安全壳抗冲击性能的影响。本研究获得国家重点研发计划项目（2022YFC3802000）以及国家自然科学基金（51890903和52250003）的支持。
This dissertation focused on the mechanical behavior and application of the single steel-plate concrete composite (HSC) containment structures. Based on the three levels of configuration-component-structure, the dynamic and static mechanical behavior of the HSC containment structures were investigated by experimental research, theoretical analysis and numerical simulation. The main results and achievements of the research are as follows:(1) Pull-out tests were carried out on 19 groups (a total of 39 samples) of HSC connection specimens with different detail parameters. The effect of constraint mode, anchoring methods of the tie bar, connector forms and the concrete strength on the tensile resistance of the local specimens were mainly investigated. The failure modes, ultimate tensile resistance, load-slip characteristics and strain development of the specimens were analyzed. Furthermore, the deformation patterns and load-transferring mechanism of different connection methods were compared, and design suggestions were proposed.(2) The theoretical model of the ultimate tensile resistance of the HSC connection was derived based on plastic limit analysis. The finite element model of the connection was established, and failure mode, tensile resistance, stifness and ductility were analyzed. Both the theoretical model and the finite element model were validated against the experimental results, and optimization suggestions were proposed.(3) 17 impact tests on the HSC targets were completed to study the impact resistance of the HSC panel-element. The focus was on the effects of structural forms, connection methods, stirrup ratio, the thickness of steel plate, and the enhancement of stiffeners. The failure modes and dynamic response characteristics of the specimens were examined and the damage distribution and deformation characteristics of the panel-element were analyzed.(4) A finite element model was developed to evaluate the impact resistance of the HSC panel-element, in order to simulate failure mode, deformation state and dynamic response characteristics. By comparing the numerical and experimental results, the accuracy of the finite element model was verified. Parametric analysis was carried out based on the proposed finite element model for panel-element with either TBIJC or anchor-ended TBOHS, and the assessment method of the critical impact velocity was proposed.(5) Based on the verified finite element model of the commercial aircraft, a finite element model was developed for the impact analysis of the HSC containment structure, and the damage modes, deformation distribution and dynamic response characteristics of the containment structure were simulated. Based on the optimized boundary condition, the influence of impact conditions and structural forms on the impact behavior of the HSC containment structure was parametrically studied.This dissertation is sponsored by the National Key Research and Development Program of China (Grant No. 2022YFC3802000) and the National Natural Science Foundation of China (Grant No. 51890903 and 52250003).
