改革开放的大好形势,促使上海城市建设发生了日新月异的变化.近20年来上海以国内外前所未有的速度,大规模高标准地建成了总长425公里的轨道交通网络,为开发利用地下空间开拓了快速通道。与此同时,上千幢高于百米的超高层建筑及其配套建设的地下建筑如雨后春笋般蓬勃而起,人防工程、地下车库、地 The excellent situation of reform and opening up has brought about the rapid changes in the urban construction in Shanghai. Over the past 20 years, Shanghai has built a rail transit network of 425 km in length and at a high standard with unprecedented speed both at home and abroad, opening up a fast track for the development and utilization of underground space aisle. At the same time, thousands of high-rise buildings above 100 meters and their supporting underground structures have mushroomed, civil air defense projects, underground garages,