一种预应力监测系统的现场应用研究

Research on Pre-stressed Concrete Monitoring System's Field application

本文以重庆西站东站房预应力混凝土结构为工程背景,对预应力结构的长期监测方法进行了研究。采用的方法为,通过锚索计监测预应力钢筋的内力变化,利用钢筋计和混凝土表面应变计测量普通钢筋应力和混凝土的表面应变,通过静力水准仪监测预应力混凝土梁的竖向变形——挠度。通过分析现场量测结果发现,本文方法可实时监测预应力混凝土梁的安全状态,了解梁的健康状况。

Based on the pre-stressed concrete structure of Chongqing West Railway Station＇s eastbuilding, this thesis makes research on the long term monitoring method to pre-stressed structure. Themethod is to measure vertical deflection deformation of beam with the hydrostatic leveling monitoringmeter, monitor pre-stressed reinforcement with anchor monitoring, and measure concrete strain;reinforcing bar meter measuring reinforcement force with surface strain meter. Through analyzing theresults, this method can be taken to make real-time monitor on the safety status of the pre-stressedconcrete, and judge the beam healthy condition.