大坝应力、应变监测的几个问题

Several Questions of Stress Strain Monitoring on Concrete Dam

分析了大坝应力、应变监测中经常遇到的几个问题,指出合理地选择应力、应变监测仪器的类型和正确的安装埋设方法是确保获得稳定、可靠数据的关键,论证了差阻式仪器是适合于大体积混凝土的埋入式仪器,阐述了埋入式应变计的基准值选择重要性和选择方法,分析并论证了三维坐标法是适宜的应变计组安装方式,提出了改进无应力计结构的建议,讨论了混凝土压应力计的选择问题以及锚杆应力计、锚索测力计的施工安装问题,并对应力、应变的"人工比测"问题进行了探讨。

It is indicated that the type of rational choice the monitoring gauge for stress strain and correct installed and embedded method is the key that insured acquired of stabilized and reliable data. The Carlson instruments is the embedded instruments suited for mass concrete has demonstrated. The essentiality of the benchmark data chosen and choice method for embedded strain has expatiated. It has analyzed and demonstrated that the three-dimensional coordinate method is the fitting install method for strain group. The advice for improve on construction of no-stress strain has presented. The question of choice at pressure cell for concrete,and the construction installing of anchor bar stress meter and load cell has discussed,and discussed question of manual contrast measure at stress strain monitoring.