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北京地铁西单站,是我国首座超浅埋暗挖的大跨度地下工程,位于西长安街的西单路口东侧正线下,地处繁华市区。车站主体为三拱两柱双层结构,车站正洞全长260米,宽26.14米,高13.5米。全期工程27道工序,25个分项,180余个子目,都要在统一部署下,实现力的转换与平衡。在不足2500平米的场地上,要利用两个竖井,出土17万方,并将10000多吨钢材、6.5万方混凝土输送到作业面,施工工艺集高难新于一体。我局1989年7月中标承担这项工程施工后,投入10个工程队,1600余人。我们按
Xidan Station of the Beijing Subway is the first large-scale underground excavation project in China. It is located at the west side of the Xidan intersection west of Chang’an Avenue and is located in the prosperous urban area. The main body of the station is a three-arch, two-post double-storey structure. The main entrance of the station is 260 meters long, 26.14 meters wide, and 13.5 meters high. There are 27 processes, 25 sub-items, and 180 sub-projects in the whole project, all of which must be converted and balanced under unified deployment. In the site of less than 2,500 square meters, it is necessary to use two shafts to unearth 170000 square meters, and transport more than 10,000 tons of steel and 65,000 square meters of concrete to the work surface. In July 1989, when the Bureau of China was awarded the bid to undertake the project construction, it invested 10 engineering teams and more than 1,600 people. We press