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1990年国家地震局把上海改列为七度防震区,要求上海的房屋按七度区设防。上海的老房子大多是30年代建造的,问题相当严重。1992年前建成的1.8亿千万平方米的建筑中,没有抗震设防的,也大多数是居民住的建筑。上海的弄堂房子有新式里弄、成排里弄、个体单条里弄等三类,旧式里弄有3600万平方米,其中有解放初期造的,有文革前盖的,也有文革期间盖的,不少是没有抗震性能的砖泥结构房屋。这一部分房屋一旦发生灾害可能比石库门房子更大。许多电影院的防震能力也很差,只能看门面,不能看里面。外滩附近及有关道路上还有不少景观建筑都需要加固,如七重天宾馆上面的钢筋混
In 1990, the State Seismological Bureau changed the name of Shanghai to a seven-degree earthquake-resistant zone, requiring Shanghai’s houses to be fortified in the seventh district. Most of the old houses in Shanghai were built in the 1930s and the problem was rather serious. Of the 180 million square meters of buildings built before 1992, there is no seismic fortification, and most of them are residential buildings. There are three types of alley houses in Shanghai, such as the new alley, the rows of alley and the individual alley. There are 36 million square meters in the old style, including the early period of the liberation, the front cover of the Cultural Revolution, and the cover during the Cultural Revolution Earthquake performance of brick and mortar structure housing. This part of the housing disaster may be greater than the Shikumen house. Many cinema shockproof ability is poor, can only see the facade, can not look inside. Near the Bund and the road there are many landscape architecture needs to be reinforced, such as the seven days above the hotel reinforced