摘要
基于有限元软件ABAQUS建立了温度场数值模型,对不同工况下桥面升温状况进行仿真分析,以碳纤维发热线为电加热介质研究了在江苏徐州地区碳纤维发热线线功率、铺设深度和铺设间距对融冰化雪工程中桥面升温状况及桥面温度分布的影响规律。结果表明:碳纤维发热线周围温度梯度较大。碳纤维发热线的线功率、铺设深度和铺设间距对桥面的温度场分布和桥面升温时间均有一定的影响,较大的线功率、较小的铺设深度和铺设间距有利于较快的升高桥面温度,提高融冰化雪效率。综合考虑融雪效果、耗电量和施工便捷性,建议碳纤维发热线的线功率为35 w/m,铺设深度为10 cm,铺设间距为12 cm。
Based on ABAQUS Finite Element Method,a numerical model of the temperature field on bridge deck was established.This study was conducted in Xuzhou area.Jiangsu Province.The carbon fiber heater was used for electric heating.The impact of the power line,the laying depth and spacing in the ice and snow melting project on the healing conditions and temperature distributions on the bridge deck was analyzed.The results showed that:temperature gradient surrounding carbon fiber heater was higher than that in the rest area.The larger power lines,smaller laying depth and spacing could facilitate the temperature heating speed on bridge decks,and improve the efficiency of ice and snow melting.Considering the effects of snow melting,power consumption and construction of convenience,we recommend carbon fiber heater line power 35w/m.the laying depth 10 cm,the laying spacing 12 cm.
出处
《上海公路》
2016年第2期7-11,90,共5页
Shanghai Highways
基金
江苏省交通运输重大科技项目(2011Y02-1)
关键词
碳纤维发热线
桥面融冰化雪
铺设结构
有限元法
Carbon fiber heater line
Bridge deck de-icing and snow melting
Laying structure
FEM
