直接快剪试验的常见问题及解决方法
|
摘要
土的抗剪强度是土的重要力学指标之一,它代表土体在外力作用下抵抗剪切滑动的极限强度。直接快剪试验以其操作简单、原理明确被认为是用来检测土的抗剪强度的一种有效方法。基于直接快剪试验的原理,研究了在直接快剪试验过程中影响试验结果的各项因素,如土的均匀性、直剪速率、含水率与液性指数等。研究表明:土的均匀性、直剪速率、含水率与液性指数对直接快剪试验结果都有很大的影响。最后,针对这些问题,给出了相应的解决办法,完善了试验的具体操作过程,使试验数据更加合理可靠、接近样品的真实值。
The shear strength of soils is one of the important mechanical properties,which represents the ultimate strength of soils resisting the shear sliding under the external load.According to the simple opertations and clear principle,the direct shear test,as an effective method,is used to detect the shear strength of soils.Based on the basic principle of the direct shear test,the effects of the various factors,such as uniformity of soils,shear rate,moisture content,liquidity index were investigated.The research indicates that the uniformity of soils,the shear rate,the moisture content,the liquidity index have great effects on the experimental results.Finally,some suggestions were given,and the detailed operations and steps were modified.The experimental data obtained using the proposed method are reasonably and reliably.
The shear strength of soils is one of the important mechanical properties,which represents the ultimate strength of soils resisting the shear sliding under the external load.According to the simple opertations and clear principle,the direct shear test,as an effective method,is used to detect the shear strength of soils.Based on the basic principle of the direct shear test,the effects of the various factors,such as uniformity of soils,shear rate,moisture content,liquidity index were investigated.The research indicates that the uniformity of soils,the shear rate,the moisture content,the liquidity index have great effects on the experimental results.Finally,some suggestions were given,and the detailed operations and steps were modified.The experimental data obtained using the proposed method are reasonably and reliably.
引文
[1]阴光华,陈清军.不同土介质模型对相互作用体系地震反应的影响分析[J].结构工程师,2009,25(4):85-90.Yin Cuanghua,Chen Qingjun.Study on influence of different soil constitutive models on seismic responses of interaction systems[J].Structural Engineers,2009,25(4):85-90.(in Chinese)
[2]杜金龙,杨敏.邻近基坑桩基侧向变形加固控制分析[J].结构工程师,2008,24(5):93-99.Du Jinglong,Yang Min.Deflection control analysis of pile adjacent to deep excavation[J].Structural Engineers,2008,24(5):93-99.(in Chinese)
[3]周德源,张风岭.软土地基上多层房屋设计的几个问题[J].结构工程师,1998,14(3):30-32.Zhou Deyuan,Zhang Fengling.Some problems in the design of multi-story building on soft soil site[J].Structural Engineers,1998,14(3);30-32.(in Chinese)
[4]张吉顺,华斌.土与不同桩侧表面粗糙度接触面剪切试验研究[J].结构工程师,2011,27(3):114-118.Zhang Jishun,Hua Bin.Study on shear test between??soil and pile surface with different roughnesses[J].Structural Engineers,2011,27(3):114-118.(in Chinese)
[5]李晓军,江丽华,张聪.单轴贯人试验与直剪试验抗剪强度参数关系的试验研究[J].公路,2011,3:128-131.Li Xiaojun,Jiang Lihua,Zhang Cong.Shear strength parameter comparison of uniaxial penetration test and direct shear test[J].Highway,2011,3:128-131.(in Chinese)
[6]骆大春,程昌华,刘明维.膨胀土抗剪强度实验研究[J].中国水运,2007,7(12):90-92.Luo Dachun,Cheng Changhua,Liu Mingwei.Testing study on shear strength of expansive soils[J].China Water Transport,2007,7(12):90-92.(in Chinese)
[7]李银平,蒋卫东,刘江,等.湖北云应盐矿深部层状盐岩直剪试验研究[J].岩石力学与工程学报,2007,26(9):1767-1772.Li Yinping,Jiang Weidong,Liu Jiang,et al.Direst shear tests for layered salt rocks of Yunying salt mine in HuBei proving[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1767-1772.(in Chinese)
[8]杨磊.黄土抗剪强度特性分析[J].水利与建筑工程学报,2010,8(3):163-169.Yang Lei.Analysis of characteristics about shear strength of loess[J].Journal of Water Resources and Architectural Engineering,2010,8(3):163-169.(in Chinese)
[9]王林浩,白晓红,冯俊琴.压实黄土状填土抗剪强度指标的影响因素探讨[J].岩土工程学报,2010,32(增刊2):132-135.Wang Linhao,Bai Xiaohong,Feng Junqin.Discussion on shearing strength influencing factors of compacted loess-like backfill[J].Chinese Journal of Geotechnical Engineering,2010,32(S2):132-135.(in Chinese)
[10]马克生,吴海生,赵跃亭.粉土在直剪试验中的强度特性研[J].科技情报与开发经济,2009,19(5):165-166.Ma Kesheng,Wu Haisheng,Zhao Yuetdng.Research on the strength characteristics of silt in the direct shear experiments[J].Sci-tech information development&economy,2009,19(5):165-166.(in Chinese)
[11]梁斌,莫凯.不同含水率下重塑红黏土抗剪强度特性的研究[J].山西建筑,2010,36(4):101-102.Liang Bin,Mo Kai.Research on remodelling red clay's shear strength with different moisture ratio[J].Shanxi Architecture,2010,36(4):101-102.(in Chinese)
[2]杜金龙,杨敏.邻近基坑桩基侧向变形加固控制分析[J].结构工程师,2008,24(5):93-99.Du Jinglong,Yang Min.Deflection control analysis of pile adjacent to deep excavation[J].Structural Engineers,2008,24(5):93-99.(in Chinese)
[3]周德源,张风岭.软土地基上多层房屋设计的几个问题[J].结构工程师,1998,14(3):30-32.Zhou Deyuan,Zhang Fengling.Some problems in the design of multi-story building on soft soil site[J].Structural Engineers,1998,14(3);30-32.(in Chinese)
[4]张吉顺,华斌.土与不同桩侧表面粗糙度接触面剪切试验研究[J].结构工程师,2011,27(3):114-118.Zhang Jishun,Hua Bin.Study on shear test between??soil and pile surface with different roughnesses[J].Structural Engineers,2011,27(3):114-118.(in Chinese)
[5]李晓军,江丽华,张聪.单轴贯人试验与直剪试验抗剪强度参数关系的试验研究[J].公路,2011,3:128-131.Li Xiaojun,Jiang Lihua,Zhang Cong.Shear strength parameter comparison of uniaxial penetration test and direct shear test[J].Highway,2011,3:128-131.(in Chinese)
[6]骆大春,程昌华,刘明维.膨胀土抗剪强度实验研究[J].中国水运,2007,7(12):90-92.Luo Dachun,Cheng Changhua,Liu Mingwei.Testing study on shear strength of expansive soils[J].China Water Transport,2007,7(12):90-92.(in Chinese)
[7]李银平,蒋卫东,刘江,等.湖北云应盐矿深部层状盐岩直剪试验研究[J].岩石力学与工程学报,2007,26(9):1767-1772.Li Yinping,Jiang Weidong,Liu Jiang,et al.Direst shear tests for layered salt rocks of Yunying salt mine in HuBei proving[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1767-1772.(in Chinese)
[8]杨磊.黄土抗剪强度特性分析[J].水利与建筑工程学报,2010,8(3):163-169.Yang Lei.Analysis of characteristics about shear strength of loess[J].Journal of Water Resources and Architectural Engineering,2010,8(3):163-169.(in Chinese)
[9]王林浩,白晓红,冯俊琴.压实黄土状填土抗剪强度指标的影响因素探讨[J].岩土工程学报,2010,32(增刊2):132-135.Wang Linhao,Bai Xiaohong,Feng Junqin.Discussion on shearing strength influencing factors of compacted loess-like backfill[J].Chinese Journal of Geotechnical Engineering,2010,32(S2):132-135.(in Chinese)
[10]马克生,吴海生,赵跃亭.粉土在直剪试验中的强度特性研[J].科技情报与开发经济,2009,19(5):165-166.Ma Kesheng,Wu Haisheng,Zhao Yuetdng.Research on the strength characteristics of silt in the direct shear experiments[J].Sci-tech information development&economy,2009,19(5):165-166.(in Chinese)
[11]梁斌,莫凯.不同含水率下重塑红黏土抗剪强度特性的研究[J].山西建筑,2010,36(4):101-102.Liang Bin,Mo Kai.Research on remodelling red clay's shear strength with different moisture ratio[J].Shanxi Architecture,2010,36(4):101-102.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心