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Online since: June 2012
Authors: Romildo Dias Toledo Filho, V.C. Marques, Edgar Bacarji
D.3,c
1Escola de engenharia civil da UFG - Praça Universitária s/n.
CEP 74605-220 - Goiânia - Goiás – Brazil 2Escola de engenharia civil da PUC – Av.
CEP 74605-010 - Goiânia - Goiás – Brazil 3Civil Engineering Department, COPPE, Universidade Federal do Rio de Janeiro, P.O.
In the field of civil construction there is a great variety of materials with potential to be reused.
CEP 74605-220 - Goiânia - Goiás – Brazil 2Escola de engenharia civil da PUC – Av.
CEP 74605-010 - Goiânia - Goiás – Brazil 3Civil Engineering Department, COPPE, Universidade Federal do Rio de Janeiro, P.O.
In the field of civil construction there is a great variety of materials with potential to be reused.
Online since: May 2012
Authors: Shu Wang Yan, Bing Chuan Guo, Li Qiang Sun, Wei Li
Application of a crust layer for improving dredge with vacuum pressure
Shuwang Yan1, a, Bingchuan Guo1, b, Liqiang Sun1,c and Wei Li 2,d
1 School of Civil Engineering, Tianjin University, Tianjin, 300072, China;
2 Tianjin Port Group Limited Company, 300456, China
ayanshuwang@tju.edu.cn, bgbc0608@163.com, cslq0532@163.com, dliiwei2012@163.com
Keywords: Crust, Dredge fill, finite element, bearing capacity, vacuum preloading, PVD installation.
We make the experimental study, theoretical analysis and validation of engineering practice.
To verify applications of the crust in practical engineering, simulate and calculate field conditions by the finite element.
Chinese Journal of Rock Mechanics and Engineering, 2011, 30(5): 1073-1080.
We make the experimental study, theoretical analysis and validation of engineering practice.
To verify applications of the crust in practical engineering, simulate and calculate field conditions by the finite element.
Chinese Journal of Rock Mechanics and Engineering, 2011, 30(5): 1073-1080.
Online since: May 2011
Authors: Yu Zhang
Calculation of the Natural Frequencies of Transverse Vibration of Complex Beams Using the Differential-Matrix Equations
Yu Zhang1, a
1School of civil construction, Guizhou University, Caijiaguan, Guiyang, Guizhou, China 550003
aradpowa@gmail.com
Keywords: Beams; Transverse Vibration; Natural Frequency; Differential-Matrix Equation
Abstract.
A exponential circular beam which (a certain engineering constructure) outside radius is and inside radius is as shown in Figure 2, its length is l, the density is , the modulus of elasticity is E.
At last the natural frequencies of the transverse vibration of the exponential beam () are determined from Eq. (12) (15) Tab.1 The corresponding , value of the natural frequencies , of the exponential beam Iterative times 10 2.056351471 4.188994141 12 2.056203204 4.317116336 14 2.056200005 4.421806333 16 2.056199858 4.430661888 The transfer Matrix of beam of uniform and equal cross-section The composite beams exist in engineering.
In practical engineering ρ, A, E, J and l of the beam are known.
Zhang, in: 2010 International conference on mining engineering and metallurgical technology.
A exponential circular beam which (a certain engineering constructure) outside radius is and inside radius is as shown in Figure 2, its length is l, the density is , the modulus of elasticity is E.
At last the natural frequencies of the transverse vibration of the exponential beam () are determined from Eq. (12) (15) Tab.1 The corresponding , value of the natural frequencies , of the exponential beam Iterative times 10 2.056351471 4.188994141 12 2.056203204 4.317116336 14 2.056200005 4.421806333 16 2.056199858 4.430661888 The transfer Matrix of beam of uniform and equal cross-section The composite beams exist in engineering.
In practical engineering ρ, A, E, J and l of the beam are known.
Zhang, in: 2010 International conference on mining engineering and metallurgical technology.
Online since: March 2011
Authors: Wen Gai Lan, Xin Ming Zhao
Introduction
From 1960s, Kalman filtering theory has been efficiently applied in hydraulic engineering and communication engineering etc.
Because of its characteristics of prediction, correction and optimization, some research results of applying Kalman filtering theory in civil engineering has been obtained recently[1-4].
In fact, the back analysis of parameters has been widely used in practical engineering, especially in material parameters[14-17].
Because of its characteristics of prediction, correction and optimization, some research results of applying Kalman filtering theory in civil engineering has been obtained recently[1-4].
In fact, the back analysis of parameters has been widely used in practical engineering, especially in material parameters[14-17].
Online since: May 2011
Authors: Zheng Bao Lei, Xiao Yuan Zhang, Mu Xi Lei
Overall Design Method for Large Structure Crash Testing Laboratory
Zhengbao Lei 1,a, Xiaoyuan Zhang 2,b, Muxi Lei 3,c
1 Key Laboratory of Highway Engineering Changsha University of Science and Technology,Ministry of Education,Hunan Changsha 410004,P.R.China;
2 Engineering Research Center of Catastrophic Prophylaxis and Treatment of the and Traffic Safety Changsha University of Science and Technology, Ministry of Education, Hunan Changsha 410004,P.R.China;
3 School of Civil Engineering and Architecture, Changsha University of Science and Technology,Changsha 410004, P.R.China
a 909267364@qq.com, b feiyan00@126.com, c leimuxi@qq.com
Keywords: Shipping-bridge crash; Vehicle crash; Vehicle- barrier crash; Vehicle-traffic facilities crash; Laboratory; Design method
Abstract.
Acknowledgements The Study is Funded by the National Science and Technology Action Plan Project (2009BAG13A02), Hunan Province Key Academics (Vehicle Application Engineering) Construction Budget, JingZhu double-line Changsha to Xiangtan Highway Resource-saving and Environment-friendly Technology Demonstration Projects (Contract number: CXKJSF0107 and CXKJSF0108-4), hereby thank.
Acknowledgements The Study is Funded by the National Science and Technology Action Plan Project (2009BAG13A02), Hunan Province Key Academics (Vehicle Application Engineering) Construction Budget, JingZhu double-line Changsha to Xiangtan Highway Resource-saving and Environment-friendly Technology Demonstration Projects (Contract number: CXKJSF0107 and CXKJSF0108-4), hereby thank.
Online since: December 2012
Authors: Wei Dong Chen, Wen Miao Yang, Xue Kui Liu
Investigation into Attenuation of Underwater Shock Wave by Air Interlayer Using Material Point Method
Weidong Chen1, a, Wenmiao Yang1, b, Xuekui Liu2, c
1College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China
2Research Center of Satellite Technology, Harbin Institute of Technology, Harbin, China
achenweidong@hrbeu.edu.cn, byangwenmiao2008@163.com, cLiuxk@yahoo.com
Keywords: Underwater Explosion, Air Interlayer, Material Point Method, Shock Wave Attenuation
Abstract.
Engineering blasting Vol.13 (2007), pp.7-10
Computer Methods in Applied Mechanics and Engineering Vol.118(1994), pp.179-196.
Engineering blasting Vol.13 (2007), pp.7-10
Computer Methods in Applied Mechanics and Engineering Vol.118(1994), pp.179-196.
Online since: November 2012
Authors: Xing Hong Liu, Xiao Lin Chang, Yin Duan
Theory of Temperature Dynamic Control in Arch Dams and Its Application
Yin Duan1, a, Xinghong Liu2, b, Xiaolin Chang1, c
1State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
2School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China
aduanyin_0224@126.com, bliuxhphd@163.com, cchangxl@whu.edu.cn
Key words: Arch dam; Temperature Dynamic Control; Database System; Pipe cooling
Abstract: Main factors of the temperature control and crack prevention in arch dams are summarized.
Analysis on the causes of crack formation and the methods of temperature control and crack prevention during construction of super-high arch dames [J].Journal of Hydroelectric Engineering.
Dynamic analysis theory and practice for temperature control and cracking prevention of concrete arch dam [J].Chinese Journal of Rock Mechanics and Engineering.
Analysis on the causes of crack formation and the methods of temperature control and crack prevention during construction of super-high arch dames [J].Journal of Hydroelectric Engineering.
Dynamic analysis theory and practice for temperature control and cracking prevention of concrete arch dam [J].Chinese Journal of Rock Mechanics and Engineering.
Online since: October 2012
Authors: De Liang Chen, Jin Hua Yang
Nonlinear Dynamic Response of Piezoelectric Cylindrical Shell with Delamination under Hygrothermal Conditions
Yang Jinhua 1, a, Chen Deliang1
1 School of Civil Engineering and Architecture, Changsha University of Science & Technology, Hunan 410114, China
ayangjinhua01@tom.com
Keywords: nonlinear dynamic response, delamination, piezoelectric cylindrical shell, hygrothermal conditions, contact effect.
Introduction Piezoelectric materials are widely used in engineering because of their specific excellent properties.
Vol. 39 (2002), p. 1949 [11] Peng fan, Fu Yiming: Engineering Mechanics Vol. 19 (2002), p.49 [12] Li Hongyun,Liu Zhengxing: Acta Materiae Compositae Sinica Vol. 19 (2002), p.13 [13] Cheng Lejin, Xue Mingde and Hu Ning: Acta Materiae Compositae Sinica Vol. 20 (2003), p.88 [14] Yang Jinhua, Fu Yiming and Wang Yong: Engineering Mechanics Vol.23( 2006), p. 69 (in Chinese)
Introduction Piezoelectric materials are widely used in engineering because of their specific excellent properties.
Vol. 39 (2002), p. 1949 [11] Peng fan, Fu Yiming: Engineering Mechanics Vol. 19 (2002), p.49 [12] Li Hongyun,Liu Zhengxing: Acta Materiae Compositae Sinica Vol. 19 (2002), p.13 [13] Cheng Lejin, Xue Mingde and Hu Ning: Acta Materiae Compositae Sinica Vol. 20 (2003), p.88 [14] Yang Jinhua, Fu Yiming and Wang Yong: Engineering Mechanics Vol.23( 2006), p. 69 (in Chinese)
Online since: October 2012
Authors: Wen Lian Liu, Feng Qiang Dong, Xin Li, Han Mei Gong
Expansive Soil Damage to Buildings and the Treatment Methods in Jijie
Hanmei GONG 1 a, Wenlian LIU 1,2 b, Fengqiang DONG 2 c, Xin LI 3 d
1Department of Construction Engineering, Kunming University Of Science And Technology, 650024, Yunnan, China;
2 Kunming Prospecting Design Institute Of China Nonferrous Metals Industry,650051,Yunnan, China
3Fujian Provincial Institute of Architec Tural Design and Research, 350001, Fujian, China
a306756700@qq.com blwenl702@sina.com c408212373@qq.com d54355250@qq.com
Keywords: expansive soil;swell-shrink properties;building;damage;treatment methods
Abstract: By means of field sampling , laboratory test , field survey and data collection methods,
The characteristics of expansive soil were studied.
Figure 1 The indicate of landscape profiles in Jijie area Engineering characteristics Table 1 The indicators of physical and mechanical in survey area Survey area bulidings Water content (%) Liquid limit (%) Plastic limit (%) Liquidity index Plasticity index Free swelling ratio (%) Dongfanghong farm The second dormitory 27.9 52.3 30 <0 22.8 56 I-4/I-5 housing 23.5 39.6 23.9 <0 15.7 41 Gejiu City Smelter 18th quarter 29 47.3 28.2 <0 19.2 40.6 Original 4th quarter 20.2 44.6 25.3 <0 19.3 46.7 laboratory 19.7 47.8 26.2 <0 21.6 47.1 Honghe Prefecture Wire Factory Plastic, stranded line warehouse 28.2 51.3 28.8 <0 22.5 64.3 Bare wire workshop 20.6 48.4 29.5 <0 20.4 66.6 Through twice interviews and investigations in these three sites, May 2010 and January 2011, sampling 464 pieces of soil samples for experiment, the water content and the free expansion are shown in table 1, can be seen that the free expansion bigger than 40%, expansive soil in this area is middle to weak expansion potential
China Civil Engineering Society ninth soil mechanics and Geotechnical Engineering Conference (Volume Two ).
Figure 1 The indicate of landscape profiles in Jijie area Engineering characteristics Table 1 The indicators of physical and mechanical in survey area Survey area bulidings Water content (%) Liquid limit (%) Plastic limit (%) Liquidity index Plasticity index Free swelling ratio (%) Dongfanghong farm The second dormitory 27.9 52.3 30 <0 22.8 56 I-4/I-5 housing 23.5 39.6 23.9 <0 15.7 41 Gejiu City Smelter 18th quarter 29 47.3 28.2 <0 19.2 40.6 Original 4th quarter 20.2 44.6 25.3 <0 19.3 46.7 laboratory 19.7 47.8 26.2 <0 21.6 47.1 Honghe Prefecture Wire Factory Plastic, stranded line warehouse 28.2 51.3 28.8 <0 22.5 64.3 Bare wire workshop 20.6 48.4 29.5 <0 20.4 66.6 Through twice interviews and investigations in these three sites, May 2010 and January 2011, sampling 464 pieces of soil samples for experiment, the water content and the free expansion are shown in table 1, can be seen that the free expansion bigger than 40%, expansive soil in this area is middle to weak expansion potential
China Civil Engineering Society ninth soil mechanics and Geotechnical Engineering Conference (Volume Two ).
Online since: December 2012
Authors: Z X Wang, R Liu
Elastic-plastic Fracture Assessment for the Cracks Emanating from a Circular Hole under a Biaxial Loading Condition
Wang Z X a, Liu R b
Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu, China, 212013
a wzx-5566@163.com, b lrrb_007@163.com
Keywords: Hole-edge crack, Elastic-plastic fracture, Finite element analysis, Biaxial load, Failure assessment diagram.
Introduction There are inevitable holes, cracks or defects in engineering structures, which result in a series of problems, such as stress concentration and structural failure.
Since engineering components are made of tough metallic materials in the low-strength or medium-strength, before fracture or instability damage take place, there are a large amount of plastic deformations near holes, cracks or defects.
References [1] V.Shivakumar and R.G.Forman: International Journal of Fracture, Vol. 16(1980), p. 305 [2] C.W.Woo, Y.H.Wang, Y.K.Cheung: Engineering Fracture Mechanics,Vol. 32(1989), p. 279 [3] Y.Z.Chen, X.Y.Lin, Z.X.Wang: Applied Mathematics and Computation, Vol. 213(2009), p. 389 [4] J.H.Guo, Z.X.Lu, X.Feng: Acta Mechanica, Vol. 215(2010), p. 119 [5] X.Q.Yan and B.L.Liu: Mechanica,Vol. 47(2012), p. 221 [6] K.Ragupathy, K.Ramesh, D.Hall: Journal of Pressure Vessel Technology, Transactions of the ASME, Vol.132(2010), p. 114031 [7] R6, Revision 4, Assessment of the integrity of structures containing defects, including Amendments 1–7, British Energy Generation Ltd, Gloucester, UK (2009).
Introduction There are inevitable holes, cracks or defects in engineering structures, which result in a series of problems, such as stress concentration and structural failure.
Since engineering components are made of tough metallic materials in the low-strength or medium-strength, before fracture or instability damage take place, there are a large amount of plastic deformations near holes, cracks or defects.
References [1] V.Shivakumar and R.G.Forman: International Journal of Fracture, Vol. 16(1980), p. 305 [2] C.W.Woo, Y.H.Wang, Y.K.Cheung: Engineering Fracture Mechanics,Vol. 32(1989), p. 279 [3] Y.Z.Chen, X.Y.Lin, Z.X.Wang: Applied Mathematics and Computation, Vol. 213(2009), p. 389 [4] J.H.Guo, Z.X.Lu, X.Feng: Acta Mechanica, Vol. 215(2010), p. 119 [5] X.Q.Yan and B.L.Liu: Mechanica,Vol. 47(2012), p. 221 [6] K.Ragupathy, K.Ramesh, D.Hall: Journal of Pressure Vessel Technology, Transactions of the ASME, Vol.132(2010), p. 114031 [7] R6, Revision 4, Assessment of the integrity of structures containing defects, including Amendments 1–7, British Energy Generation Ltd, Gloucester, UK (2009).