坝下涵管纵向内力计算与伸缩缝间距设计

Calculation on longitudinal inner forces and space design of expansion joints on embedded pipes below dam

建立了变温与均匀内水压力、土压力、管身自重及管内水重联合作用下的坝下涵管纵向拉力、纵向弯矩计算方法,导出了坝下涵管伸缩缝间距与轴向抗裂验算计算公式。

With effect of temperature change, inner water pressure, soil pressure, deadweight and water weight, the calcu- lation method on longitudinal inner force and flexural moment of embedded pipe below dam was established and the for- mulas of space design of expansion joints and crack resistance check were derived.