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本文扼要介绍重庆长江大桥预应力T型刚构的设计、施工和检验。大桥共八孔,全长1,120米,主跨174米,为目前国内同类型桥最大跨径。文中对设计计算作了简介与评价。挠度和预拱度的确定与实际接近,并在施工过程中用卡尔曼滤波法反复校正。深水桥墩的高桩承台结构,用直径23.4米的双壁钢围堰施工。滑模技术在本桥应用较广,并创造性地推广于箱梁施工,取得良好效果。完工后进行了较广泛的荷载检验。大桥于1980年7月通车。
This article briefly introduces the design, construction and inspection of prestressed T-shaped rigid frame of Chongqing Yangtze River Bridge. Bridge a total of eight holes, a total length of 1,120 meters, the main span of 174 meters, is currently the largest span of the same type of bridge. The article made a brief introduction and evaluation of design calculation. Determine the deflection and pre-camber close to the actual, and in the construction process using Kalman filter correction method. Deep-pile piers pile cap structure, with a diameter of 23.4 m double-walled steel cofferdam construction. Slip-mode technology is widely used in this bridge, and creatively popularized in the box girder construction, and achieved good results. After completion of a more extensive load test. Bridge opened to traffic in July 1980.