Study On The Causes And Treatment Methods For Uplifted Damage Of Basement

With the continuous development of the modern cities and building technology, and with the increasingly intense of the urban space, more and more high rise building were constructed with one or multistory basements. There are many buildings that were slanted and broken because of the underground water’s buoyance pressure, so the problems of the basement anti-floating are becoming more serious. The basement structure may instable because of the integral floating and its bottom slab or outside wall may crack by the non-uniform floating pressure, ever more its bottom slab will broke up in serious, which brought great loss to country. So mechanism research on the floating destruction of basement has important application value.This paper based on the studies of basement anti-floating and treatments after the floating destruction was mainly focused on the following several aspects.1. The theoretical basis and the method of the basement anti-floating design in China are introduced in detail. On the research of the Chinese current codes overall and the anti-floating design in euro code partly, then by the analysis and comparison of the Chinese code and euro code, the deficits of the domestic codes are pointed out.2. The partial floating destruction condition of a residential district’s underground garage in Hangzhou is described in detail. The cause of floating destruction is analyzed from some aspects in the design and the construction.3. This paper introduces the treatment of the underground garage after its floating, and analysis its merits and defects. According to contemporary methods of the basement anti-floating design, improvement suggestions are put forward finally.