曲线钢箱梁主梁应力不均匀性研究

基金项目:

国家自然科学基金项目(50978232);河南省科技创新杰出青年基金项目(104100510027)

STUDY ON THE UNEVENNESS OF STRESS DISTRIBUTION OF CURVED STEEL BOX-GIRDER

1.
1. Zhengzhou Institute of Aeronautical Industry Management,Zhengzhou 450015,China;
2.
2. China Northeast Architectural Design and Research Institute Co.Ltd,Shenyang 110003,China;
3.
3. Zhengzhou Branch of Shenzhen Municipal Design &Research Institute Co.Ltd,Zhengzhou 450008,China

摘要: 结合某两跨曲线连续钢箱梁桥,采用有限元方法建立了全桥板壳模型,并计算得出钢箱梁桥在不同荷载作用下的应力。研究连续钢箱梁桥顶、底板应力分布不均的原因及规律。最后,提出应力分布不均匀系数概念,并给出了支座处和跨中应力分布不均匀系数的建议值。对今后同类连续钢箱桥的结构设计有一定的参考价值。
- 钢箱梁 /
- 曲线桥 /
- 有限元法 /
- 应力不均匀
Abstract: With regard to a two-span continuous curved bridge with steel box girder, finite element analysis modelwas established by using shell elements, and the stress of steel box girder was computed under different loadingconditions. The reason that results in unevenness of stress distribution at both top and bottom slab of curved steel boxgirder was studied through analysis, and the pattern of stress unevenness was also obtained in this paper. In the end, the unevenness coefficient of stress distribution at both support and mid-span of curved box-girder bridge was definedand a reasonable value was proposed, which may provide a reference for the design of similar bridge structures.
- steel box-girder /
- curved bridge /
- finite element method /
- stress unevenness