2月10日,天津117大厦第3道桁架层最后一段巨型桁架上弦3SHJ-11吊装就位,标志着117大厦第3道即首道双层桁架顺利合龙。该大厦共设有9道环形带状桁架层,其中有3道是双层桁架,此次安装的桁架高度11.8m,顶部标高164m,总用钢量达到2106t,箱形梁及组合节点共计108件,为全国最大双层桁架。为保证施工,项目选用2台全国最大的塔吊—— On February 10, the last section of the third truss layer of Tianjin 117 Building, truss 3SHJ-11 was hoisted in place, marking the successful concluding of the third lane of the 117th building, the first double-deck truss. The building has a total of nine circular belt truss layer, of which three are double truss, the height of the installation of the truss 11.8m, the top elevation of 164m, the total amount of steel to 2106t, a total of box beam and the combined node 108 Pieces, the country’s largest double-truss. To ensure construction, the project selected 2 sets of the country’s largest tower crane -