土方直剪试验数据采集管理系统的设计与实践

Design and Practice of Earthwork Direct Shear Test Data Collection and Management System

直剪试验被广泛应用于工程勘察中用来测定土的抗剪强度。针对直剪试验中,试验持续时间长、产生的测量数据多等特点,设计了一种基于VB6.0与USB7660多功能数据采集模块的数据采集与管理系统。详细介绍了系统的设计原理和实现方法,并对系统各部分的设计思路及实现过程进行了详细说明。实验表明,该系统基本能够满足在岩土工程勘察土方直剪试验过程中对测量数据采集与分析的要求。

Direct shear test is a basic experiment for geotechnical engineering investigation, which is widely used for measuring the shear strength of soil in engineering investigation for its simple and easy operation. In view of the characteristics of long duration and large amount of measurement data in direct shear test, a data collection and management system based on VB6.0 and USB7660 multifunction data acquisition modules was designed. The paper introduces this system about its design principle and realization method, and details the design ideas and realization process of each module. The experimental results show that this system can meet the requirements of measurement data acquisition and analysis in the earthwork direct shear test for geotechnical engineering investigation.