圆弧拱管可以跨越较大河道等障碍物，已在给水、供气等工程中得到广泛应用。本文给出圆弧形拱管在半跨水重作用下内力的计算公式并将其编制成内力计算系数表，可供工程设计使用。 Circular arch pipe can span large obstacles such as rivers, has been in water supply, gas supply and other projects have been widely used. In this paper, the calculation formula of the internal force of arc-shaped arch pipe under the action of half-crossing water weight is given and compiled into the internal force calculation coefficient table, which can be used for engineering design.