Search results

Simulation and Analysis of Stroke-controlled Tube Hydroforming By Finite Element Method Zhenli Gao 1,a, Jianwei Yang 1,b, Yunping Dou 1,c , Jianjun Liu 1d, Boyan Tang 1,e and Meixia Yuan 1,f Department of Mechanical and Electronic Engineering Beijing university of Civil Engineering and Architecture Beijing China agaozhenli@bucea.edu.cn, byangjianwei@bucea.edu.cn, cdouyunping@bucea.edu.cn dliujianjun@bucea.edu.cn, etangboyan@bucea.edu.cn, fyuanmeixia@bucea.edu.cn Keywords: stroke-controlled tube Hydroforming work piece analysis finite element method Abstract.
References [1] Nader Asnafi , Anders Skogsgardh：Materials Science and Engineering A279 (2000) 95–110 [2] B.J.
Hashmi：Finite Elements in Analysis and Design 39 (2002) 137–151 [4] Gao zhenli, Dou yunping, Yao dan：Journal of Beijing university of civil engineering and architecture.

Analysis for Interaction of Pile Group of Variable Stiffness Composite Foundation ZHANG Sufen1, a ZHANG Jianhui2 WANG xiaoyang 1 1Department of Mechanical Engineering ,North China Institute of Aerospace Engineering, Langfang, 065000,China 2College of Civil Engineering and Architecture,Hebei University, Baoding,071002,China aemail:zsf810425@126.com Key words: variable stiffness, composite foundation, pile-group, interaction, stiffness matrix Abstract.
China Civil Engineering Journal, 2002,35(4):103–108,in chinese.

Theoretical Research of Vertical Crack Propagation in Overlaid Cement Concrete Pavement Yuanyuan Gao1, a, Haijing Jin2,b, Tao jia 3,c 1College of Civil Engineering and Mechanics, Yan Shan University , Qinhuangdao 066004, China 2Facilities Office, Yan Shan University, Qinhuangdao 066004, China 3 College of Civil Engineering and Mechanics, Yan Shan University , Qinhuangdao 066004, China agaoyuanyuan2286@163.com, bjinhj0708@163.com, c18713520620@163.com Keywords: Cement concrete pavement, Fourier transform, Dislocation density function, Singular integral equation, Stress intensity factor Abstract.
Journal of Solid Mechanics and Material Engineering,2002,45(3): 371-378
Highway Engineering,2008.33(2):139-142.

Influence of saturation degree on deamplification of P1 wave through multilayered porous media Mehiaoui Hadjebar Mahdia Yasmina1, a *, Hadid Mohamed.1,b and Berrah Mounir Khaled2,c 1 National School of Public Works, Rue Sidi Garidi, Algiers, Algeria 2 Department of Civil Engineering, Ecole Nationale Supérieure Polytechnique, 10 Avenue Hassan Badi, Algiers, Algeria amahdia_y@yahoo.fr, bhadid_mohamed2003@yahoo.fr, cmkberrah@yahoo.fr Keywords: P1 wave; deamplification; coherency; porous media; saturation degree.
The analysis of dynamic transient phenomena in fluid-saturated porous media is of great interest in earthquake geotechnical engineering and geophysics because of its relationship with soil liquefaction problems.
Research report N° R84-09, MIT, Depart. of Civil Engin., Cambridge, Massachusetts, USA. (1984) [2] D.
Sato, Effect of hydraulic interface conditions on seismic reflection and transmission. 11th European Conference on Earthquake Engineering, Balkema, Rotterdam. (1998) [7] J.
Yang, Saturation effects on horizontal and vertical motions in a layered soil-bedrock system due to inclined SV waves, Soil Dynamics and Earthquake Engineering. 21 (2001) 527-536

A Study on flexural bearing capacity of RC Beams combination strengthened with CFRP by Comparative Experiments Chen Xiaoqiang1, a, Jia Bin1, b, Yao Huachuan1, c, Zhang Yu1 1Department of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, 621010, China aChenxiaoqiang@swust.conl, bJiabin216@126.com, c369770836@qq.com Keywords: CFRP, Replacing concrete, Plating bar, RC beam Abstract: This paper compares the flexural bearing capacity, rigidity, and ductility of the reinforced RC beams after comparative tests of reinforcing RC beams by three different ways: directly bonding CFRP, bonding CFRP after replacing concrete and bonding CFRP after replacing concrete and planting bar.
References [1] Zhou ji, Zhao Shaowei: Study on Bending Performance of Different Damaged Concrete Beams Reinforced with Carbon Fiber Cloth (Subgrade Engineering, 2010.2) [2] Bu Liangtao, Song li: Experimental and theoretical study on flexural behavior of RC beams strengthened with carbon fiber plates(CFP) (Journal of Building Structures, 2007.2) [3] Tan Yuanxiong, Zhang Jianhua: Application of the Local Replacement Technology of Concrete Member (Guangdong Architecture Civil Engineering, 2010.5
) [4] Chen Shangjian, Liu Haibo: Application of concrete-replacing method to structural reinforcement design (Engineering Journal of Wuhan University,2008.7)

The failure model of the subway station under blast loading Li Lixin1,a, Li Man2,b, Geng Xiaolong3,c 1,2,3School of Civil Engineering, Shenyang Jianzhu University, Shenyang, Liaoning, 110168, China alilixin1966@163.com, blimanjz021@163.com, cgengxiaolong_208@163.com Keyword：blast loading; subway station; failure mode Abstract: Based on The subway station of the blast in typical pressure load model, apply ABAQUS finite element analysis software，analysis the dynamic response of the numerical simulation in the metro station under the explosion peak load.
Li Lixin （1966-）male, professor .Mainly engaged in underground structures and civil engineering constructure and management of the research.
Engineering Mechanics 2010.27（9）240-247
International Journal of Impact Engineering,1992,12(3) 345-360

The Removal of High NH3-N Concentration in Wastewater by Chemical Precipitation Weihua Song 1, 2, a,Jun YIN 1, b,Jianhui Wang 1,3, c 1.School of Municipal and Environmental Engineering, Harbin Institute of Technology,Harbin 150090, China; 2.The City College of Jilin Architecturaland Civil Engineering Institute,Changchun 130021, China; 3.
Jilin Architecturaland Civil Engineering Institute,Changchun 130000, China a swh_123@163.com, bhityunyin@163.com, c huiwang111@tom.com Keywords:　high NH3-N concentration wastewater; ammonia nitrogen; struvite; crystallization Abstract:　A lab-scale study was conducted to precipitate the ammonia from high NH3-N concentration wastewater in the form of magnesium ammonium phosphate(MAP) by applying such chemicals such as MgCl2·6H2O and KH2PO4.The influences of pH value, reactive time and removal rate of ammonia nitrogen were tested.The results shows that the feasible pH values of crystallization and precipitation were between 8 and 10.
(In Chinese) [3] Hong CHEN, Haoxiang LI．Experimental research on removal of nitrogen and phosphorus in enhanced sequencing batch reactor activated sludge process［J］．Journal of Zhejiang University(Engineering Science), 2004, 38(9)：1235-1238．

Temperature Field in Simply Supported Laminated Beam Hai QIANa, Ding ZHOUb, Weiqing LIUc College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, P.
Taking the sandwich beam (three layers) which is widely used in the civil engineering as example, its top and lowest layers are made by steel while the middle layer is produced by concrete.
[6] J.Argyris, L.Tenek: Computer Methods in Applied Mechanics and Engineering Vol.129 (1996), p. 53-79
[7] J.Argyris, L.Tenek and F.Oeberg: Computer Methods in Applied Mechanics and Engineering Vol.120 (1995), p. 271-301.

Analytic Solution of Inverse Regression Equation for Evaluating Concrete Strength of Building Materials: Theory and Method Jianwei Chen1, a, Youpo Su1,b and Haibin Chen1,c 1 College of Civil and Architectural Engineering, Hebei United University, Tangshan 063009, China aheuu2010@163.com, bsuyoupo@126.com, cchb1973@163.com Keywords: Inverse regression, Analytic solutions, Building materials, Concrete strength.
Introduction Concrete, as one of the main structure materials for modern civil engineering, are widely used in the construction engineering.
Analytic Solution of Inverse Regression Equation Based on the specification of the rebound method, the number of test area for the actual engineering or test block is not less than 10, and if the size of one direction is less than 4.5 m, the size of another direction is less than 0.3 m, and then the number of test area can be properly reduced but not less than 5.

An Experimental Study on Mechanical Behavior of Superelastic Niti Shape Memory Alloy Bar Subjected to Torsion Haijun Zhoua, Honghong Huangb and Hua Zhangc College of Civil Engineering, Shenzhen University, Shenzhen, 518060, China ahaijun@szu.edu.cn, bhuanghonhon@163.com, csibuleya@163.com Keywords: Shape Memory Alloys; Mechanical Behavior; Experimental Tests; Superelasticity, Torsion.
Introduction Shape memory alloys have its own advantages for application in engineering vibration control.
Due to the few exploratory studies about big size SMA bar subjected to cyclic uniform torsion, this paper reports an experiment study on mechanical performance of a SMA bar under cyclic uniform torsional loading, for the purpose of potential application of aseismic device in civil engineering.
McCormick, et al:Journal of Structural Engineering-Asce Vol.130(2004) , p.38