一、前言土压力盒是进行土压力和土反力量测的基本工具,种类很多。按其传感方式可分为两类:一种是钢弦式;因体积较大,多用于原型观测。另一种是电阻应变片式,体积可在大范围内变化,在原型观测和模型试验中均有应用。用于模型试验的土压力盒,根据试验目的和试验条件,对外形尺寸、量程范围,灵敏度 First, the preface Soil pressure box is the basic tool for measuring earth pressure and soil reaction force measurement, many types. According to the sensing method can be divided into two categories: one is the steel string type; due to the larger volume, more for prototype observation. The other is resistance strain gauge, the volume can vary widely, both in prototype observation and model test. Soil pressure box for model test, according to the purpose of the test and test conditions, the appearance size, range, sensitivity