智能控温防冻桥面的构思和设计

中国冬季天气寒冷，路面桥面容易结冰，南方结冰期近1个月，北方时间更长.结冰引起的交通事故和高速公路关闭带来巨大的社会影响和经济损失，故急需采取有效的方法防止路面结冰.利用在桥面铺装层中的钢筋网，修改一个方向的钢筋为钢管，钢管中敷设发热丝，对桥面加热，整个电路使用控制系统根据温度变化自动控制.当桥面温度低于2 ℃时，控温系统自动接通电源，发热丝发热，加热桥面，当桥面温度高于20 ℃时，控温系统自动断开电源，发热丝停止加热桥面，从而实现温度智能可控，并且低温时路面不会结冰，故障时易于检修，车辆能安全通行.

Design of Bridge Deck with Intelligent Temperature Control and Deicing System

It is cold winter in China,and the cold weather lasts almost one month in south China and even longer in the north.So,the road surface and bridge deck get iced up easily.The traffic accidents and high-way closures caused by icing will bring huge negative social influence and economic losses,so it is necessary to take effective decicing methods.However,some of the current deicing methods,have both advantages and disadvantages.Accordingly,this paper proposes a new method:replace a row of reinforcement steel bar with steel pipes in the steel mesh and lay heating wires in the pipes to heat up he bridge deck.The entire circuit control system takes the advantage of automatic temperature control.When the deck temperature is lower than 2 ℃,the temperature control system automatically switch on the power,and wires warm up;when the deck temperature is higher than 20 ℃,the temperature control system automatically switch off the power,wires stop warming.In this way,intelligent temperature control is achieved,and at the same time,the deck will not be iced up in low temperature.This system is easy to repair when with a fault,thus ensuring safe transportation.