不同吸力下膨胀土力学特性研究
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摘要
膨胀土的应用比较多,特别是在建设方面的应用,另外滑坡现象与膨胀土之间也有很大的关系,但是膨胀土特性比较特殊,在一定的环境下可能会发生不利现象,必须对膨胀土力学特性进行分析,了解其抗剪强度、泊松比和弹性等指标,分析不同吸力下应力应变曲线总体趋势,同时分析膨胀土在不同吸力下的力学特性,进而更好的控制膨胀土的稳定性,降低雨季山体滑坡现象的发生,为人们提供一个良好的生活环境。本文主要利用三轴压缩试验,研究不同吸力下膨胀土力学性质以及影响。
Expansive soil has wide applications, especially in building. There is also a strong relationship betweenlandslides and expansive soil, but expansive soil has special characteristics and in certain circumstances may occurunfavorable phenomena, we must analyze the mechanics characteristics of expansive soil, understand its shearstrength, Poisson's ratio, elasticity and other indicators, analyze the overall trend of stress-strain curve under differ-ent suction, and analyzes the mechanical properties of expansive soil under different suction, and thus better controlthe stability of expansion soil, reduce the landslides phenomenon in rainy season, and provide people with a good liv-ing environment. The paper mainly uses triaxial compression test, and studies the mechanical properties and influenc-es of expansive soil under different suction.
Expansive soil has wide applications, especially in building. There is also a strong relationship betweenlandslides and expansive soil, but expansive soil has special characteristics and in certain circumstances may occurunfavorable phenomena, we must analyze the mechanics characteristics of expansive soil, understand its shearstrength, Poisson's ratio, elasticity and other indicators, analyze the overall trend of stress-strain curve under differ-ent suction, and analyzes the mechanical properties of expansive soil under different suction, and thus better controlthe stability of expansion soil, reduce the landslides phenomenon in rainy season, and provide people with a good liv-ing environment. The paper mainly uses triaxial compression test, and studies the mechanical properties and influenc-es of expansive soil under different suction.
引文
[1]李志清.非饱和膨胀土力学特性及其工程处置研究[D].北京:中国科学院地质与地球物理研究所,2008.
[2]王道善.考虑应力历史的膨胀土力学特性试验研究[D].合肥:合肥工业大学,2013.
[3]陈善雄,李伏保,孔令伟,等.弱膨胀土工程特性及其路基处治对策[J].岩土力学,2006,27(3):353-359.
[4]李新明,孔令伟,郭爱国,等.考虑超固结比和应力速率影响的膨胀土卸荷力学特性研究[J].岩土力学,2013,(Z2):121-127.
[5]颜光辉.成都地区膨胀土力学特性试验研究[D].成都:西南交通大学,2013.
[6]蒋泽中.铁路路基膨胀土工程特性指标试验研究[J].成都:西南交通大学学报,2013,48(5):839-844,850.
[7]慕现杰,张小平.干湿循环条件下膨胀土力学性能试验研究[J].岩土力学,2008,29(Z1):580-582.
[8]JANBU N.Soil Compressibility as Determined byOedometer and Triaxial Tests[C].Wiesbaden:Proceedings 3rdEuropean Conference on Soil Mechanics and FoundstionEngineering,1998.
[9]CAI Zheng-yin,LI Xiang-song.Deformation Character-istics and Critical State of Sand[J].Chinese Joumal of Geo-teehnical Engineering,2004,26(5):697-701.
[2]王道善.考虑应力历史的膨胀土力学特性试验研究[D].合肥:合肥工业大学,2013.
[3]陈善雄,李伏保,孔令伟,等.弱膨胀土工程特性及其路基处治对策[J].岩土力学,2006,27(3):353-359.
[4]李新明,孔令伟,郭爱国,等.考虑超固结比和应力速率影响的膨胀土卸荷力学特性研究[J].岩土力学,2013,(Z2):121-127.
[5]颜光辉.成都地区膨胀土力学特性试验研究[D].成都:西南交通大学,2013.
[6]蒋泽中.铁路路基膨胀土工程特性指标试验研究[J].成都:西南交通大学学报,2013,48(5):839-844,850.
[7]慕现杰,张小平.干湿循环条件下膨胀土力学性能试验研究[J].岩土力学,2008,29(Z1):580-582.
[8]JANBU N.Soil Compressibility as Determined byOedometer and Triaxial Tests[C].Wiesbaden:Proceedings 3rdEuropean Conference on Soil Mechanics and FoundstionEngineering,1998.
[9]CAI Zheng-yin,LI Xiang-song.Deformation Character-istics and Critical State of Sand[J].Chinese Joumal of Geo-teehnical Engineering,2004,26(5):697-701.