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结合一座2孔10m×4.5m的钢筋混凝土箱涵,通过对比分析大跨箱涵结构在3种不同地基抗力系数下的受力情况,总结得出随着地基抗力系数的增大,上部荷载作用传递至箱涵底板跨中的效应减小,直至减为0的结论,从而将箱涵结构优化为刚架结构。
Combined with a 2-hole 10m × 4.5m reinforced concrete box culvert, by comparing and analyzing the stress of the box culvert structure under three different foundation resistance coefficients, the conclusion is drawn that with the increase of the foundation resistance coefficient and the upper load The effect of the transfer to the mid-span of the box culvert decreases until it is reduced to 0, which optimizes the box culvert structure as a rigid frame structure.