【摘要】 销接钢结构广泛应用于结构工程中。销孔间隙会使体系产生初始几何位移 ,并对结构的承载力产生不容忽视的影响。笔者提出折减刚度的概念 ,对销结钢结构体系的稳定承载力进行了一次逼近 ,这提供了一种新方法和新思路。在算例中对六四式铁路军用梁标准三角拼组简支梁考虑初始几何位移对梁的稳定承载力进行了分析 ,给出了该结构考虑稳定时的临界跨度更多还原

【Abstract】 The pin connected steel structure, as a kind of pre cast structures, is widely used in structural engineering. Because of the interstice between pin and pinhole, the initial geometric displacement is generated, and then the bearing capacity of the structure is reduced. In this paper, by using the concept of reduced rigidity, the stability bearing capacity of the pin-connected steel structure is approached approximately, which put forward a new method and new ideas. As the examples, the stability bearing capacity of simply supported steel beam with the initial geometric displacement is studied. The critical span of structure with stability is obtained.更多还原