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本文简单地回顾了我国近代在混凝土拱桥形式方面的发展概况,并介绍了几种主要混凝土拱桥的构造特点及适用场合。在混凝土拱桥设计理论方面着重讨论了考虑混凝土徐变引起的恒载内力变化,以及截面强度验算的有关问题;对拱桥的空间作用,上承式拱桥荷载横向分布的简化计算作了阐述。文中还介绍了在软土地基上下部结构形式的发展及其主要特点,以及桥台按变形协调理论的计算要点。
This article briefly reviews the development of the concrete arch bridge in modern times in our country, and introduces the structural features and applicable situations of several major concrete arch bridges. In the aspect of the design theory of concrete arch bridge, the problems of considering the change of the constant load internal force caused by concrete creep and the checking of the cross-section strength are discussed emphatically. The space function of the arch bridge and the simplified calculation of the transverse load distribution of the load-bearing arch bridge are expounded. The article also introduces the development of the substructure structure and its main features on the soft soil foundation, as well as the calculation points of the abutment deformation coordination theory.