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上海国际金融中心(以下简称国金中心)X2工程基坑面积逾5万m2,以地下连续墙相隔,分3个区先后施工。1区地下室施工期为117d,要支7道支撑,施工地下5层,且3区的第2道支撑须在1区底板全部完成后才可形成。为加快施工进度,在第4道支撑上搭设钢平台,逆作法施工部分地下2层夹层结构楼板,使之形成对撑,取消了T形墙,使地铁车站与外围的地下结构同步施工,地铁车站内外结构在地下1层合龙。该施工法缩短了工期,经济效果显著。
Shanghai International Financial Center (hereinafter referred to as the Golden Center) X2 project pit area of more than 50,000 m2, separated by continuous underground diaphragm, in three districts have construction. The construction period of basement 1 in area 1 is 117 days, with 7 supports and 5 underground floors. The support of the 2nd road in zone 3 shall be completed only after the floor of floor 1 is completely completed. In order to speed up the construction progress, a steel platform was set up on the support of the fourth track, and two floors of sandwich structure slabs in the underground were constructed by the reverse construction method to form a pair of supports. The T-shaped wall was canceled and the subway station was constructed synchronously with the underground structures in the periphery. Inside and outside the station structure in the basement layer 1 dragon. The construction method to shorten the construction period, the economic effect is significant.