摘要
利用"APDL语言编程"建立拱桥施工过程中9个工况的实体有限元模型,并利用该模型分析施工过程中拱肋应力的变化规律,结果表明:拱肋下表面应力值均大于上表面应力值;两侧拱脚及L/4与3L/4的应力变化呈对称趋势;张拉系梁钢束N5时,拱脚附近应力达到最大值,L/4、3L/4和拱顶应力最大值出现在桥面系施工结束后。
Nine 3-D finite element models of arch bridge were established with the APDL languag in current software, the force situations of the arch bridge under construction were analyzed with those above models. The results showed that the stress of under arch-rib contrasted is larger than the up arch-rib, and the stress of arch-foot as well as L/4, 3L/4 of the arch-rib exhibits symmetrical characteristics, and in addition, the Stress of arch foot reaches maximum when pre-stressed steel N5 is strained, while the Stress of L/4 and 3L/4 arch-rib reaches maximum when the construction is completed.
出处
《科学技术与工程》
2008年第14期4022-4026,共5页
Science Technology and Engineering
