冻土试验微机控制系统研究与应用

根据人工冻土力学性能的特点和试验规程,研究在同一台试验机上,设计出冻土单轴抗压强度试验和单轴蠕变强度试验的微机控制系统,系统设置了应力控制加载、应变控制加载和蠕变试验三个独立系统,并可以根据人为要求设定试验参数和微机控制试验;系统记录了全部试验数据,设置了查询、报表和图形等输出功能。文中介绍了冻土试验微机控制系统的关键技术,给出了冻土试验实例,对冻土力学性能的研究以及冻土试验机研制有较好的参考价值。

A Study and Application on Computer Control System for Frozen Soil Experiments

According to the characteristic of the mechanics performance of artificial frozen soil and experimental rules, a computer controlled system for artificially frozen soil was developed at a single testing machine. The machine can carry on tests not only for the compression strength of single axis but also for the creep strength of single axis. In the experiment system three individual loading ways were set up and allowed to be chosen according to the test demands. They are the stress control, strain control and creep test. At the same time, the system can completely assign experiment parameters according to requests and carry on the computer to control tests. The system can write down all test data, and has the outputting functions of setting up inquiry, report form and figure, etc. The key technology of the computer controlled system was introduced. A few of experiment examples were presented. The results have valuable reference meaning for studying frozen soil mechanics experiments and for manufacturing frozen soil testing machines.