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Study on Mechanical Properties of the Composite Materials Film by Speckle Projection Method WenWen Liu a, Zhi Wang *,b,YunHai Du c, XianZhong Xu d, DaQuan Liu e and Li Shi f Department of Engineering Mechanics, Zhengzhou University, Zhengzhou, China aliuww22@163.com, bzhiwang2009@hotmail.com, czzu_dyh@zzu.edu.cn, dxianzhongxu@zzu.edu.cn, edada76@163.com, fshilihome@sina.com Corresponding author: Zhi Wang, Dr.; Tel: +86-371-67783367-2; E-mail: zhiwang2009@hotmail.com Keywords: Mechanical properties; Composite materials; Speckle projection; Digital image correlation method; Dynamic deformation measurement.
Introduction The use of composite materials is rapidly growing in various areas of engineering applications such as aeronautical, naval, mechanical and civil engineering [1,2].
References [1] Chawla KK: Composite Materials – Science and Engineering (Berlin: Springer 1987)
Yuen: Optics and Lasers in Engineering Vol.39 (2003), p. 479-488

Application and Analysis on Polypropylene Fibrous Concrete Yinghao Wang1, a, Xudong Liu2, b 1Architecture and Civil Engineering School, UST Inner Mongolia, Batou014010, China； 2CECEC AECOM CONSULTANTS CO., LTD., Lanzhou730050, China； awyh1978@sina.com, b364592055@qq.com Keywords: Polypropylene Fibrous Concrete, Freeze-thaw Circulation.
Introduction In design of cold regions engineering, concrete’s frost resistance is an important target, especially when freeze-thaw circulation occurred with high water content, multiphase damage medium such as water, ice and aggregate come into being easily.
When select fiber, pay attention to the physics and mechanical properties, stability, durability, hydrophilic and dispersive character to meet the demand of engineering. ⅳ.
Consumption of water and water reducer should be adjusted according to fibers’ fineness. ⅳ.In order to meet the demand of engineering, high quality polypropylene fiber should be selected. ⅴ.
Reference [1] Technical specification for fiber reinforced concrete structures, China Association for Engineering Construction Standardization, 2004.

A New Element Model of Solid Bodies Jiang Ke School of Civil Engineering and Architecture, Shaanxi University of Technology, Hanzhong, shaanxi, 723001, China kj5525@sina.com Keywords: solid body, element model, Elasticity, Hooke's law, truss element Abstract.
Introduction For the solution of engineering problems, we usually assuming that the constitutive model of materials is linearly elastic in order to simplify the calculation, the theory of elasticity is a mechanics for studying the stress, strain and displacement of elastic solid bodies under the action of applied forces.
According to the above method, when the engineering constants of material satisfy Equations (1), , , (1) The cross-sectional area of bars can be written as , , , , , (2) where, E1, E2, E3= Young's moduli in the 1-, 2-, and 3-directions(Note that the 1-, 2-, and 3-directions shown in Fig. 1 and Fig. 2 are three principal material directions), =Poisson's ratio, i.e., the negative of the transverse strain in the i-direction over the strain in the j-direction when stress is applied in the j-direction, i.e., for and all other stresses are zero, G23, G31, G12=shear moduli in the 2-3, 3-1, and 1-2 planes.
According to the above method, when the engineering constants of material satisfy Equations (3), (3) The cross-sectional area of bars can be written as , , (4) Plane Strain Problem.
According to the above method, when the engineering constants of material satisfy Equations (5), (5) The cross-sectional area of bars can be written as , , (6) where, E1, E2, E3= Young's moduli in the 1-, 2-, and 3-directions,=Poisson's ratio, i.e., the negative of the transverse strain in the i-direction over the strain in the j-direction when stress is applied in the j-direction, i.e., for and all other stresses are zero, G12=shear modulus in the 1-2 plane.

Slope stability analysis with finite element method LIU Jie-qun1, a, LIU Jin-long2,b 1 Department of Computer Science and Technology, Key Lab of Network and Intelligent Information Processing, Hefei University, Hefei 230601, China; 2 Department of Civil Engineering, Hefei University, Hefei 230022, China aljq109p@163.com, balnile@163.com Keywords: slope stability analysis; limiting equilibrium method; finite element method; factor of stability Abstract.
Due to the complexity of real slope and simplicity of factitious assumption, there are lots of limitations in slope stability analysis with the limiting equilibrium method, and the precision of safety factor of limiting equilibrium method is hardly satisfy the need of modern engineering and economic effects.
[3] Ying-ren Zheng, Shang-yi Zhao, Lu-yu Zhang: Engineering Science, Vol.10(2002), p.57.
(in Chinese) [5] Shang-yi Zhao, Ying-ren Zheng, Wei-min Shi, et al: Chinese Journal of Geotechnical Engineering, Vol.3(2002), p.343.
[7] Mao-tian Luan, Ya-jun Wu, Ting-kai Nian: Journal of Disaster Prevention and Mitigation Engineering, Vol.3(2003), p.1.

., Hungary 2Szent István University Ybl Miklós Faculty of Architecture and Civil Engineering, HU-1146, Budapest, Thököly street 74, Hungary 3Budapest University of Technology and Economics, Faculty of Civil Engineering HU-1111, Budapest, Műegyetem rkp. 3-9, Hungary atalamon.attila@gmail.com, b viktoria.sugar@gmail.com, c pusztaiferenc91@gmail.com Abstract There is an urgent need nowadays to reduce current levels of Greenhouse Gas emissions (hereinafter referred to as GHG).
The applicable engineering systems are prescribed by the third level.
Consequently the technical solutions necessary to meet the requirements differ in each building type, since either the original structures, engineering systems and the numeric values of the requirement are different [9].
Present paper was supported by the Hungarian Academy of Sciences Centre for Energy Research, the University of Debrecen and the Szent István University Ybl Miklós Faculty of Architecture and Civil Engineering.
References [1] Attila Talamon, Tamás Csoknyai PhD, Monitoring of a Performance oriented Policy Model for the Retrofit of Buildings Built with Prefabricated Technology, Environmental Engineering And Management Journal 10: (9) pp. 1355-1363

The Risk Management of the owner in the Bidding Process under the 2013 edition of the Valuation Mode of Bill of Engineering Quantity Guo Zhanglin1,a,Jia Ruihong2,b 1 Department of civil engineering,North China Institute of Science and Technology,East Yanjiao,Beijing,China,101601 2 College of Economics and Management, Hebei University of Engineering,Handan, Hebei ,056038 aemail: gg_zz_ll@163.com, bemail:tsqyjrh8725@126.com Keywords: owner;valuation risk;pricing standard; risk control Abstract.
Therefore, the worker who will prepare the bill of engineering quantity must be familiar with the bill of quantities specifications and possess the accurate method of calculating engineering.
Under normal circumstances, the contractor may be more clear the number of engineering of the projects than the owners.In most cases,once we found that  there is a big difference between the actual quantities and engineering signed by both parties, we will use the unbalanced quotes, which resulte in the transfer of risk to the owner,and the contractor will earn high profits in the event of engineering changes.
Quantitative Risk Analysis of Water Project Investment under the Current Valuation Models of Engineering Quantity Bill.
Analysis of Construction Engineering pricing contracts risk allocation.

Mix Proportion Design and Material Requirements of Road Recycled Aggregate Concrete Fengxiang Deng1, a, Sheng Li2,b 1Hunan Communications Research Institute, Changsha 410015, China, 2Changsha University of Science and Technology, Changsha 410004, China, aE-mail:dfengxiang@163.com, bE-mail:lishengttt@163.com Keywords: Road engineering; Recycled aggregate; Gradation; Fundamental characteristic; Experimental study.
(3) The preparation of recycled aggregate concrete by using waste concrete has been highly valued in the new engineering project.
It not only saves resources and energy, and reduces engineering construction cost and environmental pollution, but also promotes environmental protection and sustainable development of the civil engineering industry.
Acknowledgements This work is financially supported by the National Natural Science Foundation of China under Grant No.51178062 and 51008038, the Open Fund of Key Laboratory of Special Environment Road Engineering of Hunan Province under Grant No. kfj110401，and Higher School Science Research Project in Hunan Province under Grant No.12C0014.
[6] JTG E30-2005 Test Methods of Cement and Concrete for Highway Engineering[S].

Study and Practice on the Whole Process Evaluation Strategies of Green Building HE Kaiyuan1, a, WANG Yongchao2, b and Wang Feng3, c 1Institute of building technology, China CTDI Engineering Corporation, Chongqing, China 2 Institute of building technology, China CTDI Engineering Corporation, Chongqing, China 3College of architecture and civil Engineering, Yanshan University, Qinhuangdao, Hebei, China ahkyuan2006@126.com, bwyc181@126.com, cwf-bb@126.com Keywords: Green Building; Whole Process Evaluation; Green Strategies Abstract.
Because of involving many units, complicated operation and long construction, it is difficult to achieve the whole process identification of green building.It refines the assessment process of green building into conceptual design, predesign, construction drawing stage, green construction, completion and acceptance of construction, operation and maintenance respectively.Furthermore, the detail requirements and implementary strategies are expatiated in the article, combined with related theory and engineering design.
Additional, it analyzed on green strategies of evaluation based on an actual engineering to provide a reference for green building assessment.
Consequently, the owner should put forward clearly the requirements and standards of green construction during the engineering design and constructing bidding.

Engineering Neutron Diffraction Data Analysis with Inverse Neural Network Modeling Baris Denizer1,a, Ersan Üstündag1,b, Halil Ceylan2,c, Li Li3,d, and Seung-Yub Lee3,e 1Iowa State University, Materials Science and Engineering, Ames, IA 50011, U.S.A 2Iowa State University, Civil, Construction and Environmental Engineering, Ames, IA 50011, U.S.A 3Columbia University, Applied Physics and Applied Mathematics, NY 10027, U.S.A abarisdenizer@gmail.com, bustundag@iastate.edu,chceylan@iastate.edu,dll2311@columbia.edu, esl3274@columbia.edu Keywords:neutron diffraction, finite element, neural network, inverse analysis, constitutive law Abstract.Integration of engineering neutron diffraction data analysis and solid mechanics modeling is a powerful method to deduce in-situ constitutive behavior of materials.
Compression samples with different volume fraction of W (20, 40, 60, and 80%) were loaded in-situ with a neutron beam at the Los Alamos Neutron Science Center (LANSCE) using the SMARTS engineering diffractometer.
Wang, The application of neutron diffraction to engineering problems, Jom, 58 (2006) 52-57
Holden, A Canadian perspective on engineering strain measurements by neutron diffraction, Can.
Hollomon, Tensile deformation, Transactions of the American Institute of Mining and Metallurgical Engineers, 162 (1945) 268-290.

Mass-spring-damping model of saturated sands Lixiang Wu1, a, Xingmin Hou 1,b,Zhang Jia1,c 1 civil engineering college of Yantai university .Yantai, China atmwlx@126.com, bhouxm@ytu.edu.cn,czhangjia.lily0535@yahoo.com.cn Key Words: saturated sands; mass-spring-damping; reciprocity law equation; stiffness coefficients; damping coefficients Abstract: Based on the theory of elastic wave in saturated soils, the vertical vibration of a rigid circular footing resting on saturated sands is studied to obtain its analytical solution of dynamic compliance coefficients.
If theoretical results of saturated half-space are applied in engineering calculation, a practical method should be studied.
Journal of geotechnical engineering, 1999, 21(4): 392-397
Thesis, Institute of Engineering Mechanics, China Seismological Bureau, 2002
Earthquake Engineering and Structure Dynamics, 1986, 14: 683-703