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主要研究现代胶合木结构内嵌钢板螺栓连接节点力和位移的关系。连接节点处的位移主要由两部分组成:螺栓本身的变形以及木材相对于螺栓的变形(即木材和螺栓相互挤压时的变形)。基于材料力学和弹塑性力学,通过虚功原理和单位荷载法对内嵌钢板单个螺栓连接节点在承受单向荷载作用时的受力变形全过程进行了分析,推导出了两部分变形的关系式,并与试验结果进行了对比,结果吻合较好。研究成果可为我国现代胶合木结构的设计和使用提供参考。
The main research is the relationship between the force and displacement of the embedded steel plate bolting joint in modern veneer wood structure. The displacement at the connection node consists mainly of two parts: the deformation of the bolt itself and the deformation of the wood relative to the bolt (ie the deformation of the wood and the bolt when they are pressed against each other). Based on the mechanics of materials and elasto-plastic mechanics, the whole process of stress-strain deformation of a single bolted joint of steel plate under uniaxial load is analyzed by means of virtual work principle and unit load method. The relation between the two-part deformation is deduced , And compared with the test results, the results agree well. The research results can provide a reference for the design and application of modern laminated wood structure in our country.