崇遵楚米I号大桥T形刚构转体桥施工控制技术

Construction Control Technolgy of Chumi No.1 Bridge with Rigid T-frame and Turn-body

T形刚构转体桥施工过程中,如何使成桥后的内力和线性满足实际规范要求,是施工中的难点。结合工程实例,采用最优控制理论与计算机相结合的技术,将主桥成桥线形和施工期结构变化状态作为线性离散,确定控制系统最优控制对象。采用卡尔曼波法建立离散模型,不断对各节段进行调整、控制。最后得出各节段的实际标高与预测标高和设计标高的变化趋势大致相同,实际标高围绕着预测标高和设计标高上下波动。

In rigid T-frame turn-body bridge construction,how to control the internal force and linear to meet the regulatory requirements is difficulty.In this paper,based on examples of the use of optimal control theory and computer technology,and taking the main bridge linear and structural changes in the state as a linear discrete-time,optimal control target is determined.Using the Kaerlmab method to discrete model,and through continuously adjusting the various stages and control,it is concluded that the actual elevation of every segment elevation and prediction elevation and design trends are more or less similar,and the actual elevation is forecast around the design elevation and prediction elevation.