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| 1 | Model test on dynamic characteristics of invert and foundation soils of high-speed railway tunnel显示文摘A dynamic model test(CL = 4) at different velocities of train,namely different loading frequencies,is carried out to study the dynamic characteristics of a high-speed railway tunnel invert and its foundation soils.Not only are the accelerations,dynamic coefficients,dynamic stresses of the invert and foundation soils emphatically analyzed,their relationship with the velocity of the train are discussed in detail.Through laboratory testing,the attenuation of vibration propagating from up the rails is obtained and the calculation formula of the speed influence coefficient of the tunnel invert is preliminarily established.The depth of the foundation soils influenced by vibration is also determined in this study.It is shown that the responses of the tunnel invert and foundation soils to vibration are slightly increased with the velocity of the train;circumferential stresses in the bottom of the invert are tensile stresses and maximum stresses appear under the foot of the rails;the dynamic soil pressures of the foundation decrease quickly with the distance away from the tunnel invert and an exponential relationship exists between them. | Huang Juan Yuan Tieying Peng Limin Yu Jun Ding Zude | 2015 | Earthquake Engineering and Engineering Vibration2015，14，3： | 10 |
| 2 | Experimental study on electrical conductivity of dunite at high temperature and pressure——The evidence of electrical conductivity of cold mantle in the Gaize-Lugu area显示文摘The electrical conductivities of the dunite from the Qinghai-Xizang (Tibetan) Plateau were measured with the impedance spectra method at 1.0-4.0 GPa and 643-1093 K. The experimental results indicated that activation enthalpies of the dunite are smaller than 0.9 eV, the conduction mechanism in dunite may be attributed to the mixed electrical conduction involving grain interiors and boundaries. On the basis of the results of this experiment, we can deduce that there exists cold mantle in the area of Gaize-Lugu in the Qinghai-Xizang (Tibetan) Plateau by reverse methods from the magnetotelluric sounding data (conductivity-depths profile) available for western Tibet. The result provides the present cold mantle viewpoint with strong proof on the basis of high temperature and pressure experiments. | WANG Duojun LI Heping LIU Congqiang ZHAO Zhidan MO Xuanxue GUO Tieying SU Gengli DING Dongye | 2001 | Chinese Science Bulletin2001，46，24： | 5 |
| 3 | Grey characteristics of microbanding of stalagmite in Shihua Cave, Beijing and its climatic signification(I)显示文摘 | Xiaoguang Qin Dongsheng Liu Ming Tan Tieying Li Jinpo Lü Zhaoyan Gu Houyuan Lü Zhongli Ding Zhengtang Guo Jiaqi Liu Gaozhong Nie | 1998 | Science in China Series D: Earth Sciences1998，，2： | 1 |
| 4 | Application of Image Processing for Pulsed-heating Infrared Thermography Quantitative Testing显示文摘 | Tang Huijun Ding Tieying Xue Shuwen Zong Mingcheng | 2001 | Journal of Northern Jiaotong University2001，23，2： | 1 |
| 5 | Grey characteristics of microbanding of stalagmite in Shihua Cave, Beijing and its climatic signification(I)显示文摘 | Xiaoguang Qin Dongsheng Liu Ming Tan Tieying Li Jinpo Lü Zhaoyan Gu Houyuan Lü Zhongli Ding Zhengtang Guo Jiaqi Liu Gaozhong Nie | 1998 | Science in China Series D: Earth Sciences1998，，2： | 1 |
| 6 | Grey characteristics of microbanding of stalagmite in Shihua Cave, Beijing and its climatic signification(I)显示文摘 | Xiaoguang Qin Dongsheng Liu Ming Tan Tieying Li Jinpo Lü Zhaoyan Gu Houyuan Lü Zhongli Ding Zhengtang Guo Jiaqi Liu Gaozhong Nie | 1998 | Science in China Series D: Earth Sciences1998，，2： | 1 |
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