摘要
采用数值计算的方法分析了赵州桥上的两对伏拱对桥身拱轴线形状及拱券应力分布的影响.一方面阐明了伏拱的存在使桥体的圆弧形拱轴线与符合力学原理的恒载压力线十分接近.另一方面,说明伏拱的存在明显消除了桥体拱券中的拉应力,加强了桥体的安全性.从而对这座千年古桥的卓越力学性能有了进一步的认识.
Numerical computational method is employed to analysis the influence of shoulder-arch upon the style of arch-axis line and stress distribution in the bridge body. Through computation and contrast, we can safely conclude that on the one hand, original archaxis line matches well with the permanent-loaded compression line because of the shoulder-arch, on the other hand, the existence of shoulder-arch weakens the internal tensile stress and reinforces the sta- bility of the bridge body greatly.
出处
《力学与实践》
CSCD
北大核心
2001年第3期20-24,共5页
Mechanics in Engineering
基金
国家自然科学基金
关键词
赵州桥
拱轴线
伏拱
恒载压力线
力学性能
Zhaozhou Bridge, arch-axis line, should-arch, permanent-loaded compression line
