温度变化对可拆卸式强制对中架的稳定性分析

Analysis of stability for the temperature variation on a removable forced centering bracket

监测项目采用强制对中标志作为水平位移变形监测的基准点,针对这一情况,设计一种新型的可拆卸式强制对中架。对比分析可拆卸式强制对中架、传统混凝土对中标志及加保温措施的可拆卸式强制对中架的特性。对其稳定性测试方法进行论述,并通过试验获得实测数据。结果表明,这种可拆卸式对中架稳定性较好,能满足施测精度小于1mm的技术要求,并在相关工程中有较好的应用效果。

T his paper introduces a new design of the removable forced centering bracket ,w hich is focused on the situation of using forced centering symbols as the datum of the horizontal displacement in monitoring programs .By the characteristic contrasting of the removable forced ,traditional concrete and removable forced with thermal insulation centering brackets ,it discusses the stability for the methods through the measured data obtained by the tests . The removable centering bracket has a better performance for stability and can satisfy the technical requirement of the measurement precision w hich is less than 1 mm ,and additionally ,gets a better application to the engineering .