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大跨度焊接钢箱梁斜拉桥的施工控制技术具有控制目标多元性、调控手段局限性、温度效应影响显著性等特点。针对这些特点采用神经网络控制技术 ,应用施工现场模拟温度场、施工实时仿真控制计算、施工过程应力预警监控等技术手段 ,在南京长江第二大桥南汊斜拉桥的施工控制实施中实现了不进行索力调整过程而完成多元目标监控任务并且主梁合龙精度达到国际领先水平的控制结果
The construction control technology of long-span welded steel box girder cable-stayed bridge has the characteristics of diversification of control objectives, limitations of control measures and significant effect of temperature effect. In view of these characteristics, the neural network control technology, the application of simulated temperature field in the construction site, the real-time simulation control calculation of the construction process and the early warning and monitoring of the construction process are implemented in the construction control implementation of the Nanxun Cable-stayed Bridge of the Second Nanjing Yangtze River Bridge To carry out the cable force adjustment process to complete the multi-target monitoring tasks and the main beam closure accuracy reached the international advanced level of control results