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学者姓名：付跃升
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Abstract ：
Granular materials flow remains an outstanding issue in both nature and industry where typically a range of particle sizes are involved. The mixing and segregation processes of binary granular mixture with particles of identical sizes and with different densities subjected to vertical oscillatory excitation are investigated. The DEM experiments are conducted in the PFC3D, and the material parameters are fixed through the comparison between the numerical and laboratory experiments. Firstly, the deposition patterns of particles in different constraint chutes are studied. Secondly, the kinetic mechanism between uniform particles and mixed particles is compared, and the regular patterns are revealed. Finally, different kinetic mechanisms of the particles in different constraint chutes are studied, and it is proved that the mixed particles under constraint conditions get more kinetic energies and have a longer runout. © 2016, Chinese Society of Civil Engineering. All right reserved.
Keyword ：
Geotechnical engineering Geotechnical engineering Granular materials Granular materials Kinetic energy Kinetic energy Kinetics Kinetics Mixtures Mixtures Structure (composition) Structure (composition)
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| GB/T 7714 | Bi, Yu-Zhang , He, Si-Ming , Li, Xin-Po et al. Kinetic mechanism of mixed particles under constraint conditions [J]. | Chinese Journal of Geotechnical Engineering , 2016 , 38 (3) : 529-536 . |
| MLA | Bi, Yu-Zhang et al. "Kinetic mechanism of mixed particles under constraint conditions" . | Chinese Journal of Geotechnical Engineering 38 . 3 (2016) : 529-536 . |
| APA | Bi, Yu-Zhang , He, Si-Ming , Li, Xin-Po , Wu, Yong , Wang, Dong-Po , Fu, Yue-Sheng . Kinetic mechanism of mixed particles under constraint conditions . | Chinese Journal of Geotechnical Engineering , 2016 , 38 (3) , 529-536 . |
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混合颗粒的堆积问题一直是自然界以及工业界一个悬而未决的问题。研究的对象是相同密度不同尺寸的两相混合颗粒。通过三维离散元软件PFC3D建立高仿真数值模型并进行离散元数值试验,通过数值模拟和试验对比确定本次研究所用的参数。然后对不同条件斜槽下的颗粒堆积形态进行观察并总结其堆积规律;紧接着进一步测定相同体积条件下均匀颗粒和混合颗粒分别对结构体的动力荷载变化;最终通过研究不同斜槽约束条件下混合粒径条件下的颗粒流的运动情况并得到相应规律性的结果。通过研究发现,混合颗粒粒径条件下的颗粒流运动情况和均匀颗粒粒径条件下的颗粒流运动情况差异较大,颗粒分选对其动能的影响,有约束条件下的斜槽会增加颗粒流的滑程并提高...
Keyword ：
动能 动能 混合颗粒 混合颗粒 约束条件 约束条件 结构体 结构体
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| GB/T 7714 | 毕钰璋 , 何思明 , 李新坡 et al. 约束条件下粗细混合颗粒动力机理分析 [J]. | 岩土工程学报 , 2016 , 38 (03) : 529-536 . |
| MLA | 毕钰璋 et al. "约束条件下粗细混合颗粒动力机理分析" . | 岩土工程学报 38 . 03 (2016) : 529-536 . |
| APA | 毕钰璋 , 何思明 , 李新坡 , 吴永 , 王东坡 , 付跃升 . 约束条件下粗细混合颗粒动力机理分析 . | 岩土工程学报 , 2016 , 38 (03) , 529-536 . |
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2008年5月12日,发生在中国四川省的Ms8.0级地震触发了牛眠沟特大滑坡事故,并引发了高速远程滑坡碎屑流.其滑坡碎屑流横向移动距离约3.0 km,滑坡总体积约7.5×106 m3.由于地震滑坡碎屑化过程的复杂性,国内外对此项灾害的研究成果较少.又由于其动力过程的规模巨大,室内试验无法还原灾害的动力全过程.因此本文以牛眠沟地震滑坡引发的碎屑流为研究对象,对其动力全过程进行了详细的研究.本文采用了2D离散元模型对牛眠沟滑坡进行了数值模拟,数值模型的建立是在二维颗粒单元粘结的基础上完成的,此模型还原了牛眠沟地震滑坡碎屑化动力全过程,对各过程的模拟结果进行了详尽的分析.并且揭示了不同的摩擦系数情况下滑坡特性,对其滑移范围和滑移规律进行了分析和讨论.结果显示,启动及碎屑化阶段的破坏程度受自由面影响较大,地震引发的动能则是影响凌空飞行阶段和堆积结果的主要原因,并推算出实地摩擦系数在0.2 ～0.3.其研究成果对今后类似的研究有一定的参考价值,并对致灾范围预测具有指导意义.
Keyword ：
2D离散元 2D离散元 全过程 全过程 岩石边坡 岩石边坡 碎屑流 碎屑流 颗粒流 颗粒流
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| GB/T 7714 | 毕钰璋 , 付跃升 , 何思明 et al. 牛眠沟地震滑坡碎屑化全过程离散元模拟 [J]. | 中国地质灾害与防治学报 , 2015 , 26 (3) : 17-25 . |
| MLA | 毕钰璋 et al. "牛眠沟地震滑坡碎屑化全过程离散元模拟" . | 中国地质灾害与防治学报 26 . 3 (2015) : 17-25 . |
| APA | 毕钰璋 , 付跃升 , 何思明 , 吴永 . 牛眠沟地震滑坡碎屑化全过程离散元模拟 . | 中国地质灾害与防治学报 , 2015 , 26 (3) , 17-25 . |
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高速远程滑坡碎屑流以其极高的动能和超远的位移而著称，往往对其危害范围内的构筑物和人类活动等造成严重的破坏。其高速远程效应机理一直是国内外学者研究的热点，但其防灾减灾工程在目前仍没有形成一套完善的体系。基于此，采用2D离散元模型对四川绵竹清平文家沟地震滑坡引发的碎屑流及其运动过程进行了详尽研究。数值模型对现实模型进行了一定的简化。通过数值模拟实验，验证了实际工况下的文家沟碎屑流运动情况，并在此基础上研究了不同摩擦系数条件下的碎屑流堆积情况以及三种形状的防护结构体（重力式挡墙、倾斜式结构体、月牙形结构体）对碎屑流的耗能能力。通过研究发现：人工防护结构体可以很好地耗散碎屑流的动能；多层防护结构可以提高对碎屑流动能的耗散能力：月牙形结构体对于控制碎屑流滑程有明显的优势。所得结论对今后类似的研究具有一定的参考价值。
Keyword ：
2D离散元 2D离散元 文家沟 文家沟 新型防灾减灾结构 新型防灾减灾结构 碎屑流 碎屑流
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| GB/T 7714 | 毕钰璋 , 何思明 , 付跃升 et al. 基于离散元方法的高速远程滑坡碎屑流新型防护结构 [J]. | 山地学报 , 2015 , (5) : 560-570 . |
| MLA | 毕钰璋 et al. "基于离散元方法的高速远程滑坡碎屑流新型防护结构" . | 山地学报 5 (2015) : 560-570 . |
| APA | 毕钰璋 , 何思明 , 付跃升 , 王忠福 , 闫帅星 . 基于离散元方法的高速远程滑坡碎屑流新型防护结构 . | 山地学报 , 2015 , (5) , 560-570 . |
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Based on the minimum mean-square error approach, a computational method was proposed for locating the positions of underwater explosion sources. The verification experiments show that the proposed location method can meet with the test requirements when the quantity of the effective data observed by the pressure sensors is not less than four. Satisfactory computational results can still be obtained even if the accuracies of several test data are weak. The influencing factors of the computational error were discussed as follows: veracities of test data, position turbulence of test points, accuracies of model parameters and quantity of test points. Consequently, some suggestions were put forward about the location computation for underwater explosion sources.
Keyword ：
Error analysis Error analysis Location Location Mean square error Mean square error Testing Testing Underwater explosions Underwater explosions
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| GB/T 7714 | Long, Ren-Rong , Fu, Yue-Sheng , Zhang, Qing-Ming . A location method for underwater explosion source and error analysis [J]. | Explosion and Shock Waves , 2013 , 33 (2) : 181-185 . |
| MLA | Long, Ren-Rong et al. "A location method for underwater explosion source and error analysis" . | Explosion and Shock Waves 33 . 2 (2013) : 181-185 . |
| APA | Long, Ren-Rong , Fu, Yue-Sheng , Zhang, Qing-Ming . A location method for underwater explosion source and error analysis . | Explosion and Shock Waves , 2013 , 33 (2) , 181-185 . |
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提出了一种采用最小误差逼近法对水下爆源进行定位计算的方法.通过验证性实验表明,在有效传感器观测数据不小于4个的情况下,该方法完全可以满足现场测量的要求；该方法在个别测量数据准确性较差的情况下,仍能得出较好的计算结果.最后分析了测点数据准确性、测点布置紊乱度、模型参数的准确性和测点数量对计算误差的影响,提出了定位计算实验所需要注意的问题.
Keyword ：
最小误差逼近法 最小误差逼近法 水下爆炸 水下爆炸 爆源定位方法 爆源定位方法 爆炸力学 爆炸力学 误差分析 误差分析
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| GB/T 7714 | 龙仁荣 , 付跃升 , 张庆明 . 水下爆炸爆源定位方法与误差分析 [J]. | 爆炸与冲击 , 2013 , 33 (2) : 181-185 . |
| MLA | 龙仁荣 et al. "水下爆炸爆源定位方法与误差分析" . | 爆炸与冲击 33 . 2 (2013) : 181-185 . |
| APA | 龙仁荣 , 付跃升 , 张庆明 . 水下爆炸爆源定位方法与误差分析 . | 爆炸与冲击 , 2013 , 33 (2) , 181-185 . |
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The movement of reinforced concrete fragments driven by internal explosions was investigated, and a model was built in consideration of the interaction and deformation harmony between steel bars and concrete for the description of fragments movement. The calculated and experimental results indicate that the model is reasonable.
Keyword ：
explosion driven explosion driven internal explosion internal explosion Motion model Motion model reinforced concrete fragments reinforced concrete fragments
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| GB/T 7714 | Bi, Wu , Sheng, Fu Yue , Li, Chen et al. A Motion Model of Reinforced Concrete Fragments Driven by Internal Explosion [J]. | INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION , 2012 , 13 (7-8) : 495-499 . |
| MLA | Bi, Wu et al. "A Motion Model of Reinforced Concrete Fragments Driven by Internal Explosion" . | INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION 13 . 7-8 (2012) : 495-499 . |
| APA | Bi, Wu , Sheng, Fu Yue , Li, Chen , Kai, Zhang . A Motion Model of Reinforced Concrete Fragments Driven by Internal Explosion . | INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION , 2012 , 13 (7-8) , 495-499 . |
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The bulging process of reinforced concrete surface under internal blast loading was studied. A high-speed motion analysis system was used to record the dynamic bulging process of reinforced concrete surface to obtain its bulge contour, central displacement and bulging velocity curves. A separable reinforced concrete numerical model and fluid-solid interconnection method were used to predict the development of surface bulge in LS-DYNA. The experimental results show that the velocity of surface bulge is controlled mainly by the pressure of explosive gas, and the stress wave cracks the concrete initially. The blasting crater profile is similar to a ladder. Numerical simulation results show that the numerical model can be used to predict the bulging process of surface, and the numerical results coincide well with the experimental data.
Keyword ：
Computer simulation Computer simulation Explosives Explosives Numerical methods Numerical methods Numerical models Numerical models Reinforced concrete Reinforced concrete
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| GB/T 7714 | Shi, Dang-Yong , Zhang, Qing-Ming , Fu, Yue-Sheng et al. Experimental observation and numerical simulation on the bulging process of reinforced concrete surface under internal blast loading [J]. | Acta Armamentarii , 2010 , 31 (4) : 510-515 . |
| MLA | Shi, Dang-Yong et al. "Experimental observation and numerical simulation on the bulging process of reinforced concrete surface under internal blast loading" . | Acta Armamentarii 31 . 4 (2010) : 510-515 . |
| APA | Shi, Dang-Yong , Zhang, Qing-Ming , Fu, Yue-Sheng , Xia, Chang-Fu . Experimental observation and numerical simulation on the bulging process of reinforced concrete surface under internal blast loading . | Acta Armamentarii , 2010 , 31 (4) , 510-515 . |
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对内爆炸条件下钢筋混凝土表面鼓包运动规律进行研究.采用高速运动分析系统记录试件的表面鼓包运动,得到表面鼓包形状、中心位移和速度曲线.应用LS-DYNA程序,建立分离式钢筋混凝土模型,使用流体-固体耦合方法对表面鼓包运动进行数值计算.试验结果表明,表面鼓包速度主要受爆轰气体压力载荷控制,应力波使材料产生初期裂纹,同时试件漏斗坑形状呈阶梯型.数值模拟所得到的表面鼓包运动过程和破坏形貌与试验结果相比吻合较好.
Keyword ：
内爆炸 内爆炸 分离式模型 分离式模型 数值分析 数值分析 爆炸力学 爆炸力学 试验研究 试验研究 钢筋混凝土 钢筋混凝土
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| GB/T 7714 | 时党勇 , 张庆明 , 付跃升 et al. 内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析 [J]. | 兵工学报 , 2010 , 31 (4) : 510-515 . |
| MLA | 时党勇 et al. "内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析" . | 兵工学报 31 . 4 (2010) : 510-515 . |
| APA | 时党勇 , 张庆明 , 付跃升 , 夏长富 . 内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析 . | 兵工学报 , 2010 , 31 (4) , 510-515 . |
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Abstract ：
对内爆炸条件下钢筋混凝土表面鼓包运动规律进行研究。采用高速运动分析系统记录试件的表面鼓包运动，得到表面鼓包形状、中心位移和速度曲线。应用LS-DYNA程序，建立分离式钢筋混凝土模型，使用流固耦合方法对表面鼓包运动进行数值计算。试验结果表明，表面鼓包速度主要受爆轰气体压力载荷控制，应力波仅使材料产生裂纹，同时试件漏斗坑形状呈阶梯型。数值模拟所得到的表面鼓包运动过程和破坏形貌与试验相比吻合较好。
Keyword ：
内爆炸 内爆炸 分离式模型 分离式模型 数值计算 数值计算 流固耦合法 流固耦合法 表面鼓包运动 表面鼓包运动 钢筋混凝土 钢筋混凝土
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| GB/T 7714 | 时党勇 , 张庆明 , 付跃升 et al. 内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析 [C] //第九届全国冲击动力学学术会议论文集 . 2009 : 463-468 . |
| MLA | 时党勇 et al. "内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析" 第九届全国冲击动力学学术会议论文集 . (2009) : 463-468 . |
| APA | 时党勇 , 张庆明 , 付跃升 , 夏长富 . 内爆炸条件下钢筋混凝土表面鼓包的试验观测和数值分析 第九届全国冲击动力学学术会议论文集 . (2009) : 463-468 . |
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