This paper discusses aluminium heat welding principle, the application of aluminium heat welding technology in welding crane rails and infect of long rail temperature stress on buildings.

• 摘要介绍了铝热焊原理及其焊长钢轨技术在焊接起重机轨道中的应用，并对长钢轨温度应力对建筑物的影响进行了深入分析。