The existing construction monitoring and controlling methods are profoundly researched and contrasted according to the features of pc continuous rigid frame bridge . the structure state parameters are estimated by discrete linear system , kallman filtering method and back coupling technology . and these method and theory are applied and proved in construction control of hong - shui river long span bridge 根据pc连续刚构桥的特点,通过对现有的预测控制方法的深入研究和对比分析,采用了离散线性系统和卡尔曼滤波法进行结构状态参数估计及反馈控制的技术体系,然后进行了实桥验证和应用。
This paper proposes optimum level of completion of construction stage and optimum level of construction completion of state of accomplished bridge of long span continuous rigid frame bridges , proposes optimum completion state and optimum construction stage of long span continuous rigid frame bridges , level of construction completion are used to evaluate approach degree between construction and design 方法提出大跨度连续刚构桥的最优节段施工完成度、最优成桥施工完成度、最优节段施工状态和最优成桥施工状态的概念,并利用施工完成度来评价桥梁施工过程与成桥状态对设计和规范的满足程度。
Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis . then , seismic response analytical models and non - isolated continuous rigid frame bridges are set up , while considering the interaction of soil - pile - structure and traveling wave effect simultaneously . finally , the seismic time history response of the two models is calculated by means of the finite element method , and the results show that the isolated bridge posses powerful earthquake resistance 首先论述了公路大跨径桥梁的地震反应分析方法,其中包括桩-土-结构相互作用、行波效应等因素对结构物的影响;其次,利用结构矩阵分析中的主从变换和逆步变换,推演了几个特殊单元的刚度矩阵,包括橡胶隔震层单元和带刚域构件单元;最后,考虑桩-土-结构相互作用和行波效应的结合,分别建立隔震与非隔震连续刚构桥地震反应分析模型,通过有限元法对两种结构进行时程分析,结果表明:隔震层上部结构的地震加速度反应、位移反应均明显减小,这说明隔震的连续刚构桥具有很好的抗震能力。