抛物线斜板拱桥的内力计算

当桥与该桥所位路线的障碍物斜交时，为适应线形和行车顺适，常需修建斜桥．抛物线斜桥以其不苛求支承条件与伸缩装置，又具拱式建筑曲线美和古朴大方等优点，为斜桥方案中优先考虑的桥型．但对抛物线斜板拱桥的受力计算尚无成熟理论，使之应用受到限制．对等截面抛物线斜板拱桥的受力情况进行了简要分析，用力法原理和弹性中心法导出了抛物线斜板桥的内力计算公式．

Internal force calculation of parabolic inclined slab arch bridge

Oblique bridge is often built when there is a oblique crossing between the bridge and obstruction lying in the route, where the bridge is in order to ensure line type and smooth traffic.Parabolic oblique bridge is often given priority in bridge design because it is simple,graceful and of fine lines, and do not make excessive demand for support and expansion equipment.However,it is restricted in application owing to the lack of a sound theory about the calculation of force of the parabolic oblique arch bridge.Through brief analysis of the force condition of the equal cross section parabolic inclined slab arch bridge, the calculation formulas of the internal forces are induced through force method and elastic center method.