等截面圆弧无铰拱是常见的结构,但圆弧空腹拱却比较少见。因为一般空腹拱跨度较大,在拱轴线设计理论上认为圆弧拱受力条件较差,跨度大时,宜采用悬链线、抛物线、多心圆等变曲率的线型。为探讨这一问题,近年 Cross-section arc hingeless arch is a common structure, but arc fasting arch is relatively rare. Because of the large span of the fasting arch generally, in arch axis design theory that arc arch under poor stress conditions, the span is large, should be used catenary, parabolic, multicolored circles and other variable curvature line. In order to explore this issue, in recent years