电缆融冰雪温度荷载对桥梁受力性能影响分析

Analysis on Influence of Cable Melting Ice-snow Temperature Load on Mechanical Property of Bridge

发热电缆融雪化冰技术是通过电缆加热主动预防和清除道路结冰积雪的方法,在道路结构中已成功应用,但该技术在桥梁结构中应用的研究却比较少,尤其是电缆发热时产生的附加温度荷载对桥梁结构受力的影响程度方面的研究。以一座四塔五跨斜拉桥为工程背景,通过有限元数值模拟分析,研究电缆融冰雪温度荷载对桥梁结构受力性能的影响,并对电缆除冰方案的可行性从结构受力的角度进行初步评价。

The heating cable melting ice-snow technology is a method of cable heating actively to prevent and to clean up the ice and snow on road, and has been successfully applied in the road structure. However, the study on the application of this technology in the bridge structure is less, especially the influences of the additional temperature load produced in the cable heating on the mechanical properties of bridge structure.Taking a four-pylon five-span cable-stayed bridge as the engineering background, and by the finite element numerical simulation analysis, this paper analyzes the influence of cable melting ice-snow temperature load on the mechanical property of bridge structure, and preliminarily evaluates the feasibility of cable melting ice scheme from the mechanical property of bridge structure.