青藏铁路拉萨河特大桥的设计理念

The Design Theory of the Lhasa River Bridge in Qinghai-Tibet Railway

青藏铁路拉萨河特大桥桥型的设计理念按藏民文化习俗引入哈达、经幡的柔美飘逸以及青藏高原连绵起伏的雪山意象。经过严谨的设计与优化,确定结构形式为钢管混凝土连续拱桥。该桥主桥采用的五跨三拱连续梁—系杆拱组合体系的双层叠拱结构,为国内首次采用,技术含量较高。

According to the Tibet culture and custom, the design theory of Lhasa River extra-long bridge in Qinghai-Tibet railway applying the beautiful Hada and sutra flag, as well as the snow mountain scene of Tibet altiplano. After the strict design and optimization, it was confirmed that its form is the concreted continues arch bridge with steel pipe. The bridge applies the continuous girder with five spans and three arches ≠the double-deck and overlap arch structure of tie bar combined system, which was applied firstly in China with high-technical content.