Abstract: Simplified computation of truss arch bridge is mainly simplified computation of influence line of level force. Approximate computational formula for influence line of level force has been derived in this article. According to this formula the table for computation has been given. It provides consultation for the workers engaging in engineering design. This article also introduces briefly the simplified computational method for other members of truss arch.

摘要： 桁架拱桥的简化计算主要是水平推力影响线的简化计算,本文推导出水平推力影响线的近似计算公式、列出数值用表,供从事工程设计的同志查用。本文也简要地介绍了桁架拱桥其它一些杆件的简化计算方法。