城市高架声屏障结构预警技术探讨

A Discussion on Pre-Warning Technique for the Structural Safety of Elevated Road Sound Barrier

城市高架道路声屏障结构安全保障是有效防止因屏体结构松动引起跌落导致重大风险事故的重要环节。为提升现有人工巡检的效率,对城市高架声屏障屏体安全建立24h全天候监控,对标国家相关技术规范,基于有限元方法对屏体遇到强台风正面袭击时结构松动的各类场景进行了模型计算,提出采用倾角及红外传感器的联动模式。该技术可对直线式高架声屏障结构安全提供自动预警,以增强屏体巡检的效率,确保屏体结构稳定。

In order to improve the efficiency of the existing manual routine inspection and establish 24-hour monitoring of the safety of urban elevated sound barrier,various scenarios of its structural loosening were calculated when the screen encountered a strong typhoon frontal attack based on the finite element method whilst benchmarking the relevant national technical specifications.A mode has been proposed by adopting the linkage of inclination angle and infrared sensor.This technique could provide automatic pre-warning for the safety of linear elevated sound barrier structure,so as to enhance the efficiency of screen routine inspection and ensure the stability of screen structure.