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前言 对土压力的测试,是一项比较困难的项目。其原因在于,一方面被测土体情况比较复杂;另一方面对测力元件(压力盒)本身的精度和埋设情况,还没有得到满意的结果。但是,为了直观地了解土压力情况,目前国内外很多地下工程仍然采取埋设压力盒或其它测力元件的办法,直接观测作用于结构物上的土压力情况,以便对照与理论值加以验正。在这方面,如果方法得当,可以得到较为满意的效果。
Preface The test of earth pressure is a more difficult project. The reason is that, on the one hand, the situation of the soil under test is rather complicated; on the other hand, the accuracy and embedding of the load cell (pressure box) itself have not been satisfactorily achieved. However, in order to understand the situation of earth pressure intuitively, many underground engineering at home and abroad still adopt the method of embedding pressure boxes or other force measuring elements to directly observe the earth pressure acting on the structure so as to check the comparison with the theoretical value. In this respect, if the method is properly adopted, satisfactory results can be obtained.