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School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China; a824151207@qq.com, b1063576617@qq.com Keywords：Cement；Fine powder; Graded broken stone; Compressive strength; Splitting tensile strength;Flexural strength Abstract: Ha Tai railway passenger dedicated line is a national key project of the eleventh five-year plan.
Figure 3 Regression analysis between compressive strength and flexural strength In figure 3,we can see the distribution of these scatters is uniform.There is a high fitting degree between compressive strength relationship between compressive strength and flexural strength and flexural strength.One this basis,we conclude a power-exponent equation about compressive strength and flexural strength.There is a certain practical significance in Engineering.
In order to facilitate the engineering application,we predicted the relationship between compressive strength and flexural strength of the gradred broken stone mixed with cement and fine powder which is commonly used.It is shown in table 4 power-exponent equation :Rz=0.7686Ry0.5215(R=0.9734) Table 4 Relationship between compressive strength and flexural strength compressive strength /Mpa 3.0 5.0 10.0 15.0 20.0 flexural strength /Mpa 1.36 1.82 2.55 3.16 3.67 Conclusion Through the above research,this paper draws three conclusions
There is a certain practical significance in Engineering.It will be convenient for the application in the engineering.
References: [1]JTG E30-2005, Test Methods of Cement and Concrete for Highway Engineering[S]

Vibration Test and Analysis for Indoor Steel Stair in Public Region Yingqian Ma1,a, Changqing Gong1,b and Xiaosong Ren1,c 1Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China akeira06@163.com, b8changqing_gong@tongji.edu.cn,crxs@tongji.edu.cn, Keywords: steel stair, site test, lateral vibration, vibration evaluation Abstract.
Without satisfactory guidance for this kind stair, engineers presently rely on experience and references index of the footbridge and floor.
Table 4 Weighted R.M.S. acceleration [cm/s2] Conditions Test results Numerical results arms-z arms-x arms-z arms-x 3w 13.06 2.20 15.13 1.54 4r -- -- 35.74 4.89 7w 20.52 4.83 17.01 3.49 14w -- -- 28.44 3.52 Conclusions and suggestion The vibration of the indoor steel stair in public region is studied by an engineering case.
References [1] Kerr S.C and Bishop N: Engineering Structures, Vol. 23 (2001), p.37-45
H., Pernica G. and Allen D.E: Canadian Journal of Civil Engineering.

Study on Performance and Characteristic of Microorganisms in a Waste-To-Energy System Amirhossein Malakahmad1, Noor Ezlin Ahmad Basri2, Sharom Md Zain2 1Civil Engineering Department, Faculty of Engineering, Universiti Teknologi PETRONAS, Tronoh 31750, Perak, Malaysia 2Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43650 Bangi, Selangor, Malaysia amirhossein@petronas.com.my, ezlin@eng.ukm.my, smz@eng.ukm.my Keywords: Anaerobes characterization, Anaerobic baffled reactor (ABR), Methane Abstract.
Zain: Production of Renewable Energy by Transformation of Kitchen Waste to Biogas, Case Study of Malaysia, Business, Engineering and Industrial Applications (ISBEIA), 2011 IEEE Symposium, (2011), p. 219 – 223 [4] Barber, W.P. & Stuckey, D.C: The Use of the Anaerobic Baffled Reactor (ABR) for Wastewater Treatment: A Review.
M: Biomethanation of Kitchen Waste and Sewage Sludge in Anaerobic Baffled Reactor, Symposium on Humanities, Science And Engineering (SHUSER 2012), IEEE Symposium, (2012), in press

The seismic testing has been applied widely in seismic research of civil engineering since the first pseudo-dynamic testing of the world was implemented by Takanashi[1] in Japan.
Earthquake Engineering and Structural Dynamics, Vol.21, No.1 (1992), p. 79-92 [3] Mosqueda G, Stojadinovic B, and Mahin S.
Earthquake Engineering Research Center, University of California, Berkeley (2005) [4] Nakashima M and Masaoka N.
Earthquake Engineering and Structural Dynamics, Vol.28 (1999), p. 393-420 [5] Dorka U E and Heiland D.
Earthquake Engineering and Structural Dynamics, Vol.36, No.1 (2007), p. 119-141

Leung 2, d and Arshad Munir3, e 1 Department of Mechanical Engineering, Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong 2 Department of Civil Engineering, Hong Kong University of Science & Technology, Clear Water Bay, Hong Kong 3 National Engineering and Scientific Commission, P.O Box 2801, Islamabad, Pakistan a mejkkim@ust.hk; b menaveed@ust.hk; crickywoo@ust.hk; d ckleung@ust.hk; e arshee@comsats.net.pk Keywords: Organoclay, CFRP, Hybrid composites, Interlaminar fracture resistance.
Part of the experiments was carried out when the NS (2nd author) was a visiting scholar at Hong Kong University of Science & Technology (HKUST) from the National Engineering and Scientific Commission of Pakistan.
Technical assistance from the Advanced Engineering Materials Facility (AEMF) and Materials Characterization and Preparation Facilities (MCPF), HKUST is appreciated.
Mai: Engineered Interfaces in Fiber Reinforced Composites (Elsevier, New York, 1998), p. 330.

Effect of Aging on the Low-Temperature Properties of Asphalt Mixture Ningli Li1, 2, a, Xinpo Zhao3, b, Caili Zhang1, c, Qingyi Xiao1, d and Huhui Li4, e 1College of Civil Engineering, Hebei University of Technology, Tianjin 300401, China 2The Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi'an 710064, China 3Tianjin Expressway Group Co.
,Ltd., Tianjin 300384, China 4CCCC-SHB Sixth Engineering Co.
Acknowledgements The authors thanks to the financially supports provided by the Ministry of Education Science and Technology Development Center, China (Fund No.20101317120007), Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University (Fund No.CHD2011SY003), and Natural Science Foundation of Hebei Province (Fund No.E2012202161).
References [1] JTG E20-2011, Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering, China Communications Press, Beijing, 2011
Shen, Road Engineering Materials, China Communications Press, Beijing, 2010.

Safety Risk Assessment of Highway Special Maintenance Project Based on BP Neural Network Wei Tiana, Huimin Lib, Ruiqi Yanc,Yunxiang Hu School of Civil Engineering, Xi’an University of Architecture &Technology, Xi’an, 710055, China atianwei3003@yahoo.com.cn, bli_huimin2005@126.com, cyrq1982@163.com Keywords: Highway, Special Maintenance Project, Safety Risk Assessment, BP Neural Network Abstract. 16 items of assessment indexes are selected to build up the safety risk assessment index system of special maintenance project according to the construction safety characteristics of highway special maintenance project, based on which, the safety risk assessment model of special maintenance project based on BP neural network is brought forward.
The confirming method of input sample data is as follows: plenty of reliable sample data can be gotten based on referring to assessment standard constitution method of “Construction Company Safety Assessment Criterion” and applying Delphi Technique Method and surveying and constituting “Safety Risk Index Assessment Criterion” and site survey for all special maintenance projects and questionnaire survey for engineers.
Referring to Table 2, the engineers give the assessment of the actual risk for the whole safety by collecting the former project historical information and analyzing and selecting the whole situation of finished road section of highway special maintenance project.
Therefore, there are 26 groups of sample data for the safety risk assessment and the 26 groups of sample input/output data are analyzed and collected by 18 engineers who have been working at the maintenance project for long time according to “Safety Risk Index Assessment Criterion” and “Safety Risk Grading Criterion”.
[6] Zongquan Yu and Han Yu: Neural Network Control(Xidian University Press, China 2009) [7] Sandhya Samarasinghe: Neural networks for applied sciences and engineering (Auerbach publications, USA 2007) [8] Zhuofu Wang.Project Management:Theory,Methods and Applications (China WaterPower Press, China 2007) [9] Kaili Zhou and Yaohong Kang: Neural Network Model and Matlab Simulation Programming(Tsinghua University Press,China 2005)

Failure conditions from push-out tests of a steel-concrete joint: experimental results Peter Helincks1,2,a, Wouter De Corte1,2,b, Jan Klusák3,c, Stanislav Seitl3,d, Veerle Boel1,2 and Geert De Schutter2 1Department of Construction, Faculty of Applied Engineering Sciences, University College Ghent, Schoonmeersstraat 52, 9000 Ghent, Belgium 2Department of Structural Engineering, Faculty of Engineering Sciences, Ghent University, Technologiepark-Zwijnaarde 904, 9000 Ghent, Belgium 3Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Žižkova 22, 616 62 Brno, Czech Republic apeter.helincks@hogent.be, bwouter.decorte@hogent.be, cklusak@ipm.cz, dseitl@ipm.cz Keywords: steel-concrete joint, epoxy, push-out test, shear bond strength, stress distribution Abstract.
References [1] Richard Liew J.Y., Sohel K.M.A. (2009), Lightweight steel-concrete-steel sandwich system with J-hook connectors, Engineering Structures 31, pp. 1166-1178 [2] Johnson R.P. (2000), Resistance of stud shear connector to fatigue, Journal of Constructional Steel Research 56, pp. 101-116 [3] Bouazaoui L., Perrenot G., Delmas Y., and Li A. (2007), Experimental study of bonded steel concrete composite structures, Journal of Constructional Steel Research 63, pp. 1268-1278 [4] Aboobucker M.A.M., Wang T.Y., and Richard Liew J.Y. (2009), An experimental investigation on shear bond strength between steel and fresh cast concrete using epoxy, The IES Journal Part A: Civil & Structural Engineering Vol. 2 (No. 2, May), pp. 107-115 [5] Guo Z.G., Cao S.Y., Sun W.M., and Lin X.Y. (2005), Experimental study on bond stress-slip behaviour between FRP sheets and concrete, Proceedings of the International Symposium on Bond Behaviour of FRP in Structures (BBFS 2005), pp. 77-84 [6] Sayed-Ahmed
E.Y., Bakay R., and Shrive N.G. (2009), Bond strength of FRP laminates to concrete: state-of-the-art review, Electronic Journal of Structural Engineering 9, pp. 45-61 [7] European Committee for Standardization (2004), Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings

The Construction Technology Development of Immersed Tunnel Shuiyu Li 1,a 1 Department of Civil Engineering, Shandong Jiao Tong University, Jinan, Shandong Province, China alishuiyu2011@163.com Keywords: Immersed Tunnel; Foundation Treatment; Connector Waterproof; Pipe Floating Shipped; Tube section of Sinking Abstract.
Summary With the progress of the underground space development, the role and importance of the underground engineering is increasingly apparent.
Traffic Engineering Science And Technology, 2002(3):15-27.
Municipal Engineering Technology [J]. 2007(25):490-494 (in Chinese) [3] Wenwu Yang.
Engineering Technology Development of Immersed Tunnel.

Western Engineering Research Center of Disaster Mitigation in Civil Engineering, Lanzhou Univ. of Tech., Lanzhou　730050, China;2.
With the development of the extensive use of isolation techniques in engineering structures, the simplified analysis of curved bridge isolated structure has attracted the attention of researchers. 
Earthquake Engineering and Structural Dynamics,1979, (7): 107~128
World Earthquake Engineering,2011,27(3): 142-145. ( In Chinese) [7] Li Wang, Xiyuan Zhou, Weiming Yan.
Engineering Echanics,2006.23(6): 77-84( In Chinese) [8] Hongnan Li, Linsheng Huo.