导言本文叙述了一种采用测量试样圆周应变的手段来测定圆柱试样的平均横向应变的方法。此方法是在试样周围绕一种金属丝,并用其电阻的改变来确定应变量。它的主要优点是测定的应变量为整个圆周的应变量,而不是某一点的应变量。它既可用于单轴压缩试验,也可用于不同侧压下的三轴压缩试 Introduction This paper describes a method for measuring the average lateral strain of a cylindrical specimen by means of measuring the circumferential strain of the specimen. This method is to surround a kind of wire around the sample and use its change of resistance to determine the amount of strain. Its main advantage is that the measured amount of strain is the amount of strain in the entire circumference, not the amount of strain in a certain point. It can be used for both uniaxial compression test and triaxial compression test with different lateral pressures.