摘要
为研究荷载的横向作用位置对箱梁的剪滞效应的影响,通过对瑞斯纳假定做一些修改,用能量变分法建立其微分方程,并得到其理论解答,进一步导出挠度计算公式,并对其进行了分析.由数值算例可知,根据本文公式计算出的结果与ANSYS计算结果吻合良好,这证实对假定所做修改的正确性.
To study the effect of the location of the transverse load on the shear lag in box girder, Reissner assumption was modified. Differential equations were established by the energy variational method, and its theoretical value was obtained. On the basis, the formula for calculating the deflection was derived and analyzed. According to the numerical example, the result from the equations in the work was close to that from ANSYS, which showed that the modification on the assumption was correct.
出处
《甘肃联合大学学报（自然科学版）》
2009年第6期37-39,共3页
Journal of Gansu Lianhe University :Natural Sciences
关键词
桥梁工程
剪力滞
薄壁箱梁
挠度
bridge engineering
shear lag effect
thin-walled box girder
deflection
