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“逆作法”是近十几年国际建筑界将地下连续墙施工技术用于带有多层地下室的高层建筑工程而发展起来的施工新技术。目前世界各国的高层建筑,一般都筑有地下室,法、意及欧州一些国家的高层建筑在地面以下都有3～6层地下室,最多达8～9层;日本也都有3层以上的地下室;美国则更多,一般为6～7层。带有单层或两层地下室的多高层建筑,按传统的“开敞”法进行基坑施工,一般先构筑地下基坑围护结构工程,再进行基坑土方开挖,完成钢筋混凝土底板工序后,自下而上构筑各层地下室内部结构工程,待基础地下室工程完成后,再进行地上楼层结构工程
The “reversal method” is a new construction technology developed by the international construction community in the past decade in which underground continuous wall construction technology is applied to high-rise building projects with multi-story basements. At present, high-rise buildings around the world generally have a basement. High-rise buildings in France, Italy, and European countries have 3 to 6 basements below the ground, with a maximum of 8 to 9 floors. Japan also has a basement with more than 3 floors. The United States is more, generally 6 to 7 floors. For multi-storey buildings with single or double basements, the conventional “open” method is used for the foundation pit construction. Generally, the underground foundation pit retaining structure works are first constructed, and then the excavation of the foundation pit is carried out to complete the procedure of the reinforced concrete floor. Afterwards, each floor of the underground building will be constructed from the bottom up, and after the completion of the basic basement, the ground floor will be constructed.