随着交通运输业的发展,对原有桥梁的加宽、加固、加强的课题,愈来愈受到各国桥梁界的广泛重视。我省地处长江三角洲经济区及上海经济区,一些干线上大吨位及集装箱的车辆增多,交通量增大,高速车流面对宽路窄桥,事故多发。为此,今年我们对沪宜(上海-宜兴)、宁杭(南京-杭州)公路的桥梁进行初步摸底,对其它二条线上 With the development of the transportation industry, the issues of widening, reinforcing and strengthening existing bridges have drawn increasing attention from the bridge community in various countries. The province is located in the economic zone of the Yangtze River Delta and Shanghai Economic Zone. Some highways and containers on trunk lines have increased in number and traffic volume has increased. High-speed traffic faces narrow roads with wide roads and heavy accidents. To this end, this year we have a preliminary survey of the bridges of Shanghai-Yixing (Shanghai-Yixing) and Nanjing-Hangzhou (Nanjing-Hangzhou) highways and on the other two lines