连续式碳纤维自发热机场道面温升规律试验研究
|
摘要
针对布置连续式碳纤维线的自发热机场混凝土道面,分别制作了内设6K、12K、24K发热线的水泥混凝土板,并在不同室外环境、不同输入功率下进行了温升规律现场试验。试验结果表明:1距离发热线越近,温升越快,温度越高;2发热线间距为10cm时,板面不同位置的温差在3℃以内,温度均匀性良好;3温升效果主要由输入功率决定,当环境温度在-10℃且输入功率为382W/m2时,3.5h后板面温度即可超过3℃;4自然环境对板面温升影响显著,板面温度变化与环境温度变化趋势一致,环境温度降低3℃,板面温度将会随之降低20%以上;5混凝土道面板散热慢,可以利用余热进行融雪化冰。
Aiming at self-heating airfield concrete pavement with continuous carbon fiber heating wire,three cement concrete pavement slabs were made,which respectively inbuilt 6K,12 K and 24 K carbon fiber heating wire,and the temperature-rising law of plates were studied through field experiments in different natural environment and input power. The results indicate that the more closer the heating wire,the faster the temperature could rise and the higher temperature could reach. Temperature of different points on the same plane of each concrete slab surface was less than 3℃ when spacing was 10 cm,and the temperature uniformity was good. The results of temperatre-rising were mainly determined by the input power.The temperature of slab surface could rise to 0℃ after 3.5 hours with the-10℃ natural temperature and 382 W / m2 input power. The natural environment has significant effects on the temperature-rising of slab surface. The variation tendency of temperature on slab surface was always in correspondence with the environmental temperature. The temperature on the slab surface would reduce by more than 20% when the environment temperature reduced 3℃. The thermal dissipation of concrete slab changed slowly,and the surplus thermal energy could be used for melting snow and ice.
Aiming at self-heating airfield concrete pavement with continuous carbon fiber heating wire,three cement concrete pavement slabs were made,which respectively inbuilt 6K,12 K and 24 K carbon fiber heating wire,and the temperature-rising law of plates were studied through field experiments in different natural environment and input power. The results indicate that the more closer the heating wire,the faster the temperature could rise and the higher temperature could reach. Temperature of different points on the same plane of each concrete slab surface was less than 3℃ when spacing was 10 cm,and the temperature uniformity was good. The results of temperatre-rising were mainly determined by the input power.The temperature of slab surface could rise to 0℃ after 3.5 hours with the-10℃ natural temperature and 382 W / m2 input power. The natural environment has significant effects on the temperature-rising of slab surface. The variation tendency of temperature on slab surface was always in correspondence with the environmental temperature. The temperature on the slab surface would reduce by more than 20% when the environment temperature reduced 3℃. The thermal dissipation of concrete slab changed slowly,and the surplus thermal energy could be used for melting snow and ice.
引文
[1]张涛,李腾腾,李阳光.温度影响下结构损伤识别研究现状及展望[J].公路工程,2014,39(1):44-48.
[2]磨炼同.导电沥青混凝土的制备与研究[D].武汉:武汉理工大学,2004.
[3]Lee R.C.,et al.Bridge heating using ground source heat pipes[J].Transportation Research,1984,(1):51-57.
[4]高青,于鸣,刘小兵.基于蓄能的道路热融雪化冰技术及其分析[J].公路,2007,(5):170-174.
[5]唐祖全,李卓球,侯作富.导电混凝土融雪化冰机理分析[J].混凝土,2001,141(7):8-12.
[6]唐祖全,李卓球,钱觉时.碳纤维导电混凝土在路面除冰雪中的应用研究[J].建筑材料学报,2004,7(2):215-220.
[7]武海琴.发热电缆用于路面融雪化冰的技术研究[D].北京:北京工业大学,2005.
[8]李炎锋,武海琴,王贯明,等.发热电缆用于路面融雪化冰的实验研究[J].北京工业大学学报,2006,32(3):217-212.
[9]傅珍,王选仓,陆凯诠.山区高速公路桥面漫排式水热融雪系统应用[J].公路工程,2014,39(3):79-82.
[10]蔡浩田.具有融雪功能的连续碳纤维电热混凝土路板的研制[J].玻璃钢/复合材料,2009,(2):56-60.
[11]李洪磊.自发热技术在机场道面融雪化冰中的应用研究[D].西安:空军工程大学,2008.
[12]赵宏明.布置碳纤维发热线的混凝土路面及桥面融雪化冰试验研究[D].大连:大连理工大学,2010.
[13]陈龙,孙明清,李滨,等.碳纤维格栅混凝土电热路面的化冰试验研究[J].公路,2010,(4):175-179.
[14]熊竹,秦杰君.基于模拟实验的路面结冰预测研究[J].公路工程,2014,39(1):216-220.
[15]丁海滨,曾竟成,彭超义,等.碳纤维织物电阻特性研究[J].玻璃钢/复合材料,2014,(10):58-61.
[16]殷波.碳纤维复合材料加固混凝土板的有限元计算与分析[J].玻璃钢/复合材料,2010,(2):22-26.
[17]朱生盛,杨大志,秦永昊.水泥混凝土路面温度应力影响因素的有限元分析[J].公路工程,2013,38(1):122-123.
[2]磨炼同.导电沥青混凝土的制备与研究[D].武汉:武汉理工大学,2004.
[3]Lee R.C.,et al.Bridge heating using ground source heat pipes[J].Transportation Research,1984,(1):51-57.
[4]高青,于鸣,刘小兵.基于蓄能的道路热融雪化冰技术及其分析[J].公路,2007,(5):170-174.
[5]唐祖全,李卓球,侯作富.导电混凝土融雪化冰机理分析[J].混凝土,2001,141(7):8-12.
[6]唐祖全,李卓球,钱觉时.碳纤维导电混凝土在路面除冰雪中的应用研究[J].建筑材料学报,2004,7(2):215-220.
[7]武海琴.发热电缆用于路面融雪化冰的技术研究[D].北京:北京工业大学,2005.
[8]李炎锋,武海琴,王贯明,等.发热电缆用于路面融雪化冰的实验研究[J].北京工业大学学报,2006,32(3):217-212.
[9]傅珍,王选仓,陆凯诠.山区高速公路桥面漫排式水热融雪系统应用[J].公路工程,2014,39(3):79-82.
[10]蔡浩田.具有融雪功能的连续碳纤维电热混凝土路板的研制[J].玻璃钢/复合材料,2009,(2):56-60.
[11]李洪磊.自发热技术在机场道面融雪化冰中的应用研究[D].西安:空军工程大学,2008.
[12]赵宏明.布置碳纤维发热线的混凝土路面及桥面融雪化冰试验研究[D].大连:大连理工大学,2010.
[13]陈龙,孙明清,李滨,等.碳纤维格栅混凝土电热路面的化冰试验研究[J].公路,2010,(4):175-179.
[14]熊竹,秦杰君.基于模拟实验的路面结冰预测研究[J].公路工程,2014,39(1):216-220.
[15]丁海滨,曾竟成,彭超义,等.碳纤维织物电阻特性研究[J].玻璃钢/复合材料,2014,(10):58-61.
[16]殷波.碳纤维复合材料加固混凝土板的有限元计算与分析[J].玻璃钢/复合材料,2010,(2):22-26.
[17]朱生盛,杨大志,秦永昊.水泥混凝土路面温度应力影响因素的有限元分析[J].公路工程,2013,38(1):122-123.