青藏铁路旱桥桥面遮阳对桥下及周边冻土太阳辐射影响

夏利江^1,², 周国庆^1,³, 刘宇翼³, 王涛³, 阴琪翔³

Effects of Sunshine-shield of Qinghai-Tibet Railway Land Bridge on the Solar Radiation of Underbridge and Surrounding Permafrost

Xia Lijiang^1,², Zhou Guoqing^1,³, Liu Yuyi³, Wang Tao³, Yin Qixiang³

图1 投影坐标为原点的影子运动轨迹
Fig.1 Original point shadow trajectory