大连世界贸易大厦是我国长江以北现有的最高建筑。建筑高度２４２ ２米 ,５４层。该工程施工场地狭小 ,主体结构高 ,高空作业多 ,建筑物周围距大连市天津街等３条重要交通道路最宽处仅１２米 ,安全施工难度大。但是 ,该工程从１９９８年５月９日开工至１９９９年９月１５日钢结 Dalian World Trade Building is the tallest building in the north of China’s Yangtze River. Building height of 242 2 meters, 54 layers. The construction site is small, the main structure of high, high altitude operations, the building around the city of Tianjin, Tianjin Road and other three major transport routes at its widest point only 12 meters, the safety of construction is difficult. However, the project started from May 9, 1998 to September 15, 1999