The installation methods are divided into the cold installation method and the pre - stressing installation method according to whether the temperature of zero stress condition is equal to the environment tenperature or not 根据零应力温度是否等于环境温度,将安装方式分为冷安装方式和预应力安装方式,预应力安装方式又包括预热安装方式和一次性补偿器安装方式。