摘要
以厦门市海沧货运通道(马青路-疏港通道段)公路隧道工程海新2号隧道进洞口残积砂质黏土直剪试验为背景,对残积砂质黏土直剪试验数据处理方法中的图解法、TREND函数法和最小二乘法进行对比分析,详细阐述各方法计算原理、计算过程、计算结果等。图解法、TREND函数法和最小二乘法均利用库仑方程进行推导演变,得到的土体黏聚力c和内摩擦角φ均相同,这从侧面反映了3种方法的合理性。综合对比可知,TREND函数法和最小二乘法计算过程较复杂,图解法较简便、适用,可将其应用于实际工程中残积砂质黏土直剪试验数据处理中。
Based on the direct shear test of residual sandy clay at the entrance of Haixin No.2 Tunnel of Xiamen Haicang Freight Corridor(form Maqing Road to Shugang Corridor)Highway Tunnel project,the graphical method,TREND function method and least square method are compared and analyzed.The calculation principle,calculation process and calculation results of each method are described in detail.The graphical method,the TREND function method and the least square method all use the Coulomb equation to deduce the transformation,and the obtained soil cohesion and internal friction angle are all the same,which reflects the rationality of the three methods from the side.The comprehensive comparison shows that the calculation process of the TREND function method and the least square method is more complicated,while the graphical method is simple and applicable,and it can be applied to the data processing of the residual sandy clay direct shear test in practical engineering.
作者
陈小江
CHEN Xiaojiang(Xiamen Zhongping Highway Survey and Design Institute Co.,Ltd.,Xiamen,Fujian 361008,China)
出处
《施工技术（中英文）》
CAS
2022年第3期50-53,共4页
Construction Technology
基金
国家自然科学基金(51608141)
贵州省科技基金(黔省专合字〔2012〕63号,黔科合平台人才〔2017〕5788)
贵州大学培育基金(〔2020〕44号)。
关键词
隧道工程
道路工程
黏土
直剪试验
数据处理
tunnel engineering
road engineering
clay
direct shear tests
data processing
