Research on Simple Joint System and Performance Monitoring for Reduction of Environmental Load

我们将基于细观力学研究了材料特性的纤维增强胶凝复合材料应用于钢结构的梁柱节点和柱基础，并在开发简单节点系统和性能监测系统方面进行了如下研究，以降低环境荷载1。试验验证了纤维增强胶凝复合材料简支梁-柱节点的性能，明确了节点长度要求，实现了简支梁-柱节点结构简单，且节点性能相当于或高于焊接和螺栓连接体系。为了获得定量损伤监测的分析数据，以某部分钢筋混凝土框架为例，分析了层间剪力-相对位移与损伤程度的关联关系。基于剪切断裂力学模型建立的等效刚度更适用于纤维增强胶凝复合材料简支梁-柱节理试验的节理弹簧模型。阐明了对结构构件的迟滞特性进行可靠评价是可能的。为了用有限元方法分析纤维增强胶凝复合材料节理系统的微观断裂和变形特性，对其压缩软化特性进行了试验和分析研究。试验验证了纤维增强胶凝复合材料简易柱基节理的性能，明确了节理长度要求，使其结构简单，节理性能等于或高于预埋柱基节理。在研究过程中，总体明确了采用可回收低成本材料的简单接头系统具有高生产率和可靠性的可能性，以及所提出的简单接头系统的适用性条件。少

We have applied fiber reinforced cementitious composites, which material characteristics have been studied based on micro-mechanics, to the beam-column joint and column base in steel structures, and have achieved the following research on the development of simple joint system and performance monitoring system in order to reduce the environmental load.1.The performance of the simple beam-column joint employing fiber reinforced cementitious composites was verified experimentally, and the required joint length was clarified, in which simple construction and the equivalent or higher joint performance than the welding and bolting joint systems were achieved.2.In order to obtain the analytical data for the basis of the quantitative damage monitoring, a part of the reinforced concrete frame was considered, and the story shear-relative displacement relation was analyzed in association with the damage level.3.The equivalent stiffness formulated based on the shear fracture mechanical model was … More applied to the joint spring model for the experiment on the simple beam-column joint employing fiber reinforced cementitious composites. It was clarified that the reliable evaluation on the hysteresis characteristics of structural members is possible.4.In order to evaluate the microscopic fracture and deformation characteristics of joint systems employing fiber reinforced cementitious composites by means of finite element method analysis, the experimental and analytical examinations were carried out for the compression softening characteristics.5.The performance of the simple column base joint employing fiber reinforced cementitious composites was verified experimentally, and the required joint length was clarified, in which simple construction and the equivalent or higher joint performance than the embedded column base were achieved.6.In the research duration, it has been overall clarified that the simple joint system employing recycle and low-cost materials is possible with high productivity and reliability, as well as the applicability condition of the proposed simple joint system. Less