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Introduction Circular plate has a wide range of applications in civil engineering subgrade.
It get the quick development both in theory and application [6-7]，and have got some results in the research of the subgrade plate beam structure [8-10] which started to get the attention in the civil engineering.
Journal of Engineering Mechanics.
Vol.32(2002) , p.526 (in Chinese) [8] Zhang Weixing , Pang Hui: Engineering Mechanics.
Vol.17(2000) , p.138 (in Chinese) [9] Zeng Xiangyong, Zhangyao: Engineering Mechanics.

The Basic Research of Internal Combustion Engine Performance in Different Swirl Ratio Xiao She Jia1,a, Yong Feng Liu2,b, Li Yi3,c, Yan Shi4,d 1School of Mechanical-electronic and Automobile Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China 2School of Mechanical-electronic and Automobile Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China 3New Technologies and Materials Department, BAIC MOTOR Corporation, Ltd.
Chinese Journal of Mechanical Engineering,2012,25(5):1011-1015 [4] Liu Yongfeng, Zhang Youtong.
Simulation and experiment for three-dimensional combustion temperation field in direct-injection diesel engine[J], Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering, 2007.43(2),196～201 [5] Kern Y.Kang, Rolf D.Reitz.
Journal of Engineering for Gas Turbines and Power, 2000, (122): 570-578 [6] M.Auriemma, G.Caputo, F.E.Corcione, et al.

The Meticulous Analysis of Skew Beam Based on the Space Skew Beam Element Method Xiangfeng Xu 1,2 a, Feng Zhang 3, b, Guangzhi Qi 3, c 1School of civil engineering, Shandong Jiaotong University, Jinan China 2 School of civil engineering and architecture, Changsha university of science &technology, Changsha China 3Shandong University, Geotechnical and Structural Engineering Research center ,Jinan China a 404943332@qq.com, bzhangfeng2008@sdu.edu.cn, c 249282876@qq.com Keyword: skew bridge, principle of minimum potential, stiffness matrix, beam element, inclined support Abstract：When a skew bridge is analyzed, it is difficult to treat skew boundary conditions with general space beam element in single beam calculation of skew beam bridge.
Extend the application scope of skew element, which is more suitable for engineering analysis.
Acknowledgement This work was financially supported by Changsha university of science &technology bridge engineering key laboratory open fund (10KA16)< Bearing performance assessment method of single box double room PC box girder after cracking > Reference: [1] Huang Pingming.
Seismic analysis and assessment of a skew highway bridge[J] Engineering Structures,2000,22(11):1433-1452.
Engineering Structures, 2004, 26(8): 1127–1142.

Currently, ontologies are widely used in knowledge engineering, artificial intelligence and computer science, etc [5].
Vorakulpipat : Advanced Engineering Informatics, 2010. 24(2): p. 219-228
Gómez-Pérez, Ontological Engineering: Principles, Methods, Tools and Languages, in Ontologies for Software Engineering and Software Technology, C.
[7] El-Diraby T A, Lima C, Feis, B.: Journal of Computing in Civil Engineering, 2005, 19(4): 394-406
[12] Wetherill, M., et al.: Journal of Computing in Civil Engineering, 2007. 21(2): p. 78-89.

Aiming at the engineering status of the shortage of natural sand and the contradictory between workability and strength surplus emerging in the design of low strength high flowing concrete(LHC), this paper has proposed a mix design method of LHC with low cement content prepared by manufactured sand (MS).And then verifies the feasibility of the method through experiments.
This method, which designs strength according to water to cement ratio (W/C) and workability according to paste content, has solved the above problems emerging in current engineering .It can not only decrease the cost and improve project quality, but also save resource and protect the environment. 2.
Compressive strength was determined by testing 150mm×150mm×150mm cubes according to the Chinese national standard GB/T 50081-2002[7].Chloride ion permeability was measured using 100mm×100mm×50mm specimens by NEL method based on Nernst－Einstein equation and electric testing apparatus for diffusion coefficient of chloride ion of concrete, according to the Chinese Civil Engineering Society Standard CCES 01-2004[8]. 2.3 Mix design The designed strength grade of the concrete is C30.Slump within the range of 160±20mm, good cohesiveness and water retention are required by workability.
From what have been discussed above, considering workability, durability, cost and regarding the mass of SF as part of MS, the mix proportion of LHC with low cement content prepared by MS can be determined as C:W:MS:CS:FA:SP=336:185:782:1087:47:4.70(SF content 11%) or 336:185:829: 1087:0:4.94(SF content 16%).The former mix proportion can be firstly used in practical engineering while the remote areas lacking fly ash can adopt the latter one. 4.
[8] China Civil Engineering Society.

Elasto-Plastic Earthquake Response Analysis of High-Speed Railway Bridge Fabricated Isolation Bearings Lingkun Chena, Lizhong Jiangb , Peng Liuc School of Civil Engineering and Architecture, Central South University, Changsha, 410075 China aemail: lingkunchen08@hotmail.com, bemail: lzhjiang@mail.csu.edu.cn, cemail: lop868@163.com, Keywords: high-speed railway bridge; isolation bearings; earthquake response; elasto-plastic analysis Abstract: Basin rubber bearings are frequently used in high-speed railway bridge or passenger special line railway bridge, lead rubber bearings (LRB) are infrequently used in those railway bridges nowdays, the study on earthquake-resistant capability of railway bridge fabricated isolation bearing - the intelligent and functional structure - would be beneficial in engineering practices.
Introduction With the progressive development of high-speed railway in the world, especially in China recently, more and more attention has been paid to the study on vehicle-bridge dynamic analysis when high-speed trains passes over a bridge on the field of civil engineering.
Proceedings of 3rd World Conference on Earthquake Engineering, New Zealand, 1965
Park: Analytical Modeling of Inelastic Seismic Response of R/C Structures, Journal of Structural Engineering, Vol. 116(4) (1990), p. 996-1017

Applicability analysis of the dynamic test method to the frequency Xiaoyun Meng1, a, Fu Ma 2, b 1 Department of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China 2 Department of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China amengxiaoyunyun@126.com bs991400218@sina.com Keywords: theoretical analysis method; dynamic test method; frequency; Abstract.
Engineering Situation The first contract section of Chang-jin provincial highway from Nan Wang zhuang to Si tu section highway engineering, the third part Ba gong River Bridge used of 30m box girder, which adopt field pre-mixed concrete construction, the bridge was still unfinished when it was tested, it was in the prestress tension and mortar intrusion simply supported condition.
Left1-1 boun- -dary beam Left1-4 boundary beam Left2-3 centre sill Left2-2 centre sill Fig. 1 Layout drawing of beams Field measurement of dynamic test method For ensuring engineering quality, tracking test is often needed in practical engineering.
Real-time monitoring the quality of bridge is inconvenience in bridge engineering, various quality defects appear because of the influence of construction conditions and engineering geology, which will influence the bridge quality.
Dynamic testing technology is a multidisciplinary and complex inter discipline, the test objects are engineerings with hidden engineering properties, many influencing factors and uncertain construct quality.

Force Calculation of Shunqiao Trench-buried Inverted Siphon Structure Dongyu Ji1,a，Wenliang Ma2,b 1Department of Civil Engineering, Hunan Urban Construction College, Xiangtan, Hunan, 411101, China 2School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, Henan, 450011, China ahnjdy@126.com, bhljmwl@126.com Keywords: Shunqiao Inverted Siphon, Finite Element Method, Analysis Path.
Introduction Shunqiao inverted siphon engineering is located main canal of Shanmen reservoir irrigated area, which is located Li county in Hunan province.
Inverted siphon engineering distances Upstream of the canal is 16.5 km, the basin area that is controlled by inverted siphon engineering is 2.99 million mu.
The engineering adopts to trench-buried inverted siphon structure, inverted siphon is reinforced concrete pipe structure, concrete strength grade of inverted siphon is C15, rebar is Ⅱ grade.
Foundation of inverted siphon engineering is clay[2], compression modulus of the clay E3=24 MPa, Poisson ratio3=0.32.

Nanoindentation Applied to Materials with an Inner Structure Jiří Němeček1,a 1Czech Technical University in Prague, Faculty of Civil Engineering, Department of Mechanics, Thákurova 7, 166 29 Prague, Czech Republic ajiri.nemecek@fsv.cvut.cz Keywords: nanoindentation, microstructure, fiber, animal hair, PVA, carbon Abstract.
Němeček et al., Identification of micromechanical properties on metal foams using nanoindentation, Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing.
Edinburgh: Civil-Comp Press (2011) 1-12

Review of Renewable Energy in Iran Mohammad Reza Asadi 1,a, Mahmoud Baghban Torgadri 2,b and Mahdi Moharrampour 3,c 1Department of Mechanical Engineering, Islamic Azad University, Buinzahra branch, Qazvin, Iran 2Department of Agriculture Engineering, Islamic Azad University, Varamin branch, Tehran, Iran 3 Young researchers club, Islamic Azad University buinzahra Branch, buinzahra, Iran aasadi_reza2007@yahoo.com, bmahmoud.baghban@yahoo.com, cm62.mahdi@yahoo.com Keywords: Petroleum, Geothermal, Biomass, Wind, Energy Abstract.
Biomass potential Agricultural wastes, animal wastes, corrupting waste materials, civil waste- waters, and industries waste water are the most important resource of biomass.
The presence of biomass resources in the country either civil wastes vegetating resources or agricultural wastes and benefiting from such energy producing sources, not only may supply a part of country’s energy needs but also may reduce its environmental effects out of it.
Benefiting from such resources and energy producing sources may request its special technology with a step forward for obtaining a fixed economic social green wide scope and also may cause a civil, plentiful and creation of new jobs.