论文部分内容阅读
将圆形均布荷载作用下的文克勒地基板出现环状裂缝时的板划分为二个区域,环内屈服区仍采用刚塑性假设,而环外弹性区采用线弹性假设,进而推导得到了文克勒地基上板极限承载力的弹塑性解,其中,环状裂缝出现位置由板承载力最小化条件求出,从而弥补了现有刚塑性理论解中不能确定环状裂缝出现位置的缺陷,使理论解更完备且具有良好的拓展性.分析结果表明,梅依尔霍夫的地基板承载力的解偏大且在圆形均布荷载相对半径ρa=2.925时发散,在ρa=0.09~0.70范围时,梅氏解偏大6%~10%.最后,为简便使用给出了弹塑性解的板极限承载力系数φE回归式.
In the case of annular crack, the plate under the circular uniform load is divided into two zones. The yield zone in the inner ring still adopts the rigid plastic assumption, while the outer elastic zone adopts the linear elastic assumption, and then derives The elastic-plastic solution of the ultimate bearing capacity of the Winkler foundation is obtained. The location of the annular cracks is obtained by minimizing the bearing capacity of the slab so as to make up for the inability to determine the location of the annular cracks in the existing solution of the rigid-plastic theory The results show that when the weight of the base plate of the solution is large, the solution of the weight of the base plate of the solution is divergent, and when the relative radius of the uniform circular load ρa = 2.925, In the range of 0.09 ~ 0.70, the Mie ’s solution deviates by 6% ~ 10% .Finally, the elastic-plastic solution of the ultimate bearing capacity coefficient φE regression is given for ease of use.