桥梁监测系统中梁桥静力应变传感器的优化配置

Optimal placement of static strain sensors of beam bridge structure in bridge monitoring system

为了探索桥梁结构监测系统中静力应变传感器在梁桥中的优化配置,以简支梁桥为研究对象,以传递误差最小为优化准则建立了梁桥静力监测系统传感器优化的数学模型,根据简支梁截面弯矩与挠度的关系,建立了以控制截面挠度的传递误差为最小的目标函数,并采用遗传算法的优化计算方法,提出了适用于梁桥的基于传递误差最小准则的传感器优化配置方法。实例优化结果表明,简支梁桥的应变传感器,除在跨中控制截面布点外,其余应变传感器应均匀布置。

In order to optimize the placement of static strain sensors of beam bridge monitori system, taking the simply-supported bridge structure as the study object, the method about t optimal placement of static strain sensors is put forward, the mathematic modal of beam brid optimal placement sensor is established based on the minimal transmission error criterion. T objective function in which the deflection of control section will be minimum is established. T simulating results show that proportional spacing except for the static strain the key section. ng he ge he he sensors of beam bridge should be placed in 4 figs, 9 refs.