岩土体深层水平位移测试间断期的位移增量算法  

Increment Algorithm of Deep Lateral Displacement in Rock and Soil Mass during Measuring Interims

作　　者：李国维[1,2,3] 王润[3] 胡龙生[4] 顾忠卫[1] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学道路与铁道工程研究所,江苏南京210098 [3]河海大学岩土工程科学研究所,江苏南京210098 [4]国家知识产权局专利局专利审查协作江苏中心,江苏苏州215000

出　　处：《公路交通科技》2014年第5期8-14,共7页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(41272327);江苏省自然基金项目(BK2011747);广东省交通科技重点项目(2009-01-001)

摘　　要：岩土体深层水平位移测试过程中经常面临更换测斜仪的问题,个别情况会产生测试数据不连续的测试间断现象,常规算法不能计算测试间断期的位移增量。依据滑动式测斜仪的测试原理和应用条件提出了新的测斜数据算法,即相邻测量的逐点增量对接法和单次测量的绝对位移法。相邻测量的逐点增量对接法是根据测试间断期先后2次来自不同仪器的测试数据来计算间断期的位移增量,原理简单,操作方便;单次测量的绝对位移法是仅根据间断期后单次测量数据算得间断期末不同深度的累计位移,无需间断期前的测量数据。工程实例应用表明:2种方法均能实现测试间断期的位移增量求解,二者的计算结果一致。Replacement of broken inclinometers is a common issue in the process of measuring lateral displacement of soils and rocks at deep depth. Test discontinuous phenomenon will be occurred on special cases, the regular method cannot calculate the increment of displacement in measuring interim. Based on the basic principle and application condition of the slip inclinometer, we proposed 2 new displacement increment algorithms, namely the point by point increment docking method which is based on adjacent measurement data, and the absolute displacement method which is based on the most recent data. The point by point increment docking method is based on the 2 measurement data of measuring interim from different inclinometers to calculate the displacement increment of the measuring interim, and the principle is simple and easy to operate. The absolute displacement method is only based on the single measurement data after measuring interim to calculate the accumulative increment of different depths after replacing inclinometer without considering the measurement data of the previous inclinometer. The application in a project shows that the displacement increment in measuring interim can be obtained by the 2 proposed methods. Good agreementhas been obtained between them.

关 键 词：道路工程 位移 逐点增量对接法 绝对位移法 测斜仪 

分 类 号：U412.22[交通运输工程—道路与铁道工程]