摘要
介绍三峡工程临时船闸双金属标的埋设和观测。在三峡工程临时船闸中，双金属标作为基准点使用。在安装时，特别强调双金属标钢管和铝管的线膨胀系数，必须采用权威单位的实测值，绝不能采用理论值，否则所计算的钢管长度改正数会不准确，从而歪曲垂直位移监测成果。
The double-metal marks for is one of the reference marks for vertical displacement measurement. Its advantage is that the precision of measurement will be improved if it is used to modify the deformation caused by temperature. Steel tubes and aluminium tubes have different linear expansion coefficients. so these coefficients should be measured before embedment of double-metal marks so that the modified length of steel tube will be correct.
出处
《大坝观测与土工测试》
2000年第3期55-56,共2页
Dam Observation and Geotechnical Tests
