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Effect of fly ash on the early age cracking performance of cement paste Ping Zhang1, Guanguo Liu2,3, Chaoming Pang1, Bing Du1, Honggen Qin1 1 School of Materials Science and Engineering, Jiangsu Key Laboratory of Civil Engineering Material, Southeast University, Nanjing, 211189, PR China 2 College of Mechanics and Materials, Hohai University, Nanjing 210098, PR China 3 Jiangsu Transportation Institute Co., Ltd., Key Laboratory of Large-span Bridge Health Inspection & Diagnosis Technology Ministry of Communications, Nanjing 211112, PR China Keywords：Fly ash; Early contraction; Early cracking; X-CT Abstract：The X ray computed tomography (X-CT) was applied to test the cracking resistance of cement paste, and the hydration process was monitored to study the effect of fly ash on the early age cracking performance.
Studies on the microstructures and mechanical behaviors of engineering materials examined using CT technology have been reported worldwide [6,7].
References: [1] China Civil Engineering Society，Durability of Concrete Structures Design and Construction Guidelines, _CCES01-2004
Study of concrete deterioration under immersion in simulated seawater [C]. 2012 International Conference on Civil, Architectural and Hydraulic Engineering, 2012.08.10-12,Zhangjiajie, China:2330-2333,2012

Seismic Response of the Asymmetric Structure Isolated by the Friction Sliding Bearings Jianqiang Wang 1, a, Yonggang Ding 2,b and Dawang Li 3,c 1School of Civil Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China 2School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, Henan, 450052, China 3School of Civil Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China awjq1975@163.com, bdyg9606@126.com, cduxy@szu.edu.cn Keywords: Base-Isolated Structure; Friction Sliding Bearing; Eccentricity of Superstructure; Torsional Stiffness of Superstructure; Seismic Response Abstract.
Li: Earthquake Engineering and Engineering Vibration, Vol.23 No.1 (2003), p.145 (in Chinese)

Theoretical analysis of natural vibration frequency for unbonded prestressed concrete beams Li Fengge 1, a, Li Rong 1,b 1 School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010,P.R.China alfg0626@sohu.com, bliuqiaoe74@163.com Keywords: unbonded prestressing, concrete beams, frequency, variable stiffness Abstract.
Introduction Prestressed concrete structure has been widely used in civil engineering.
Acknowledgements This work was financially supported by The Inner Mongolia Natural Science Foundation (2010MS0718) References [1] Saiidi M, Douglas B and Feng S: Journal of Structural Engineering, Vol.120(1994), p 233-241
Grace and Brian Ross: Journal of Structural Engineering, Vol.122(1996), p 643—650
(in Chinese) [5]Li Rige, YANG Guoli and ZHANG Yaoting: Journal of Civil, Architectural & Environmental Engineering,Vol. 31(2009),p.1-5(in Chinese) [6]Deng Zhiheng: Journal of Guanxi University.

Shaking table tests were conducted on it in the National Center for Research on Earthquake Engineering.
In order to understand the seismic analysis on those safety-related nuclear structures, a shaking table test was frequently used in the civil engineering field and this testing method was useful to learn the dynamic properties and seismic responses under the historical or artificial earthquakes.
And the designed scale-down R/B specimen tested in shaking table is a successful case of the civil engineering and nuclear energy industry field in Taiwan.
Hiroshi: Proc. of 11th World Conference on Earthquake Engineering.
Hou: 21st International Conference on Nuclear Engineering.

Application of ANSYS in Grid Structure Hongjiang Chen1,a, YueHai Wu2,b 1Vocational technical college in Jiangxi Normal University of science and technology in china 2robotics industry department of shanghai ABB Engineering Co.
Space grid structure of modern large span structure engineering in the most commonly used structure form.
Introduction Space grid structure with light, transparent characteristics, suitable for large area, large span, now has become a civil engineering large-span structure used in most structural form.
Civil Engineer in structure stress analysis, such as ANSYS often hope that through the use of large-scale finite element analysis software to calculate.
LINK8 [6] - dimensional bar (or truss) unit is a wide engineering application of bar element, for example can be used to simulate: truss, cable, connecting rod, spring and so on.

Displacement field study on the full width of rigid airport pavement to aircraft loadings Xianmin Zhang1, a, Qian Dong1, b 1 Airport College, Civil Aviation University of China, China acauczxm@126.com, b0205dongqian@163.com Keywords: airport engineering; rigid airport pavement; the full width of pavement; FEM; vertical displacement Abstract.
China Civil Engineering Journal, 2007, 4(4):60-65.
Journal of Traffic and Transportation Engineering, 2009, 6(3):39-44.
(In Chinese) [6] MHJ 5004—10Code for design of cement concrete pavement civil transport airports[S].Beijing: China Communications Press, 2010(In Chinese)

Parametric Analysis of Bearing Behavior for Curved Box-girders of Large Span Steel Structure Zhong Hu1,a, Dayi Ding2,b, Yuanqing Wang3,c, Liyuan Liu3,d, Haiying Wan4,e 1 Building Quality and Safety Supervision Station of Hefei, No.182 Road, Huoqiu, Hefei, China; 2Wuzhou Engineering Design and Research Institute, China North Industries Group Corporation, Beijing 100053, China; 3Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 4School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; ahuzhong126@126.com, bdingdayi@wuzhou.com.cn, cwang-yq@mail.tsinghua.edu.cn, dliuly03@163.com,ewanhy8858@163.com Key words: curved box-girder, section, plate thickness, curvature, parametric analysis, finite element analysis Abstract: The curved box-girders of Hefei Xinqiao International Airport Terminal were taken as a background of this article.
Proceeding of the 11th International Symposium on Structural Engineering, 2010 ][[] Yuanqing Wang, Liyuan Liu, Dayi Ding, Yongjiu Shi, Haiying Wan.
Li: Journal of engineering mechanics, 2000, 126(10): 1111 -1114 ][[] Byung H.
Yoo, F: Journal of engineering mechanics, 2005, 131(2): 167 -176 ].
Parametric analysis of the axis curvature was carried out[[] Ghani Razaqpur, Li Hangang: Computing in Civil and Building Engineering. 1993: 469-476 ][[] Zhang Duoxing, Qing Guocheng.

Design of Simple-supported Reactive Powder Concrete Railway Bridge with Span of 32m Zhigang Yana, Wenyu Jib, Mingzhe Anc School of Civil Engineering, Beijing Jiaotong University, Beijing, China ayanzhg@bjtu.edu.cn, bwyji@bjtu.edu.cn, cmzhan@bjtu.edu.cn Keywords: Reactive Powder Concrete; Design; Railway Bridge; Simple-Supported Beam.
It is useful for the design and application of RPC in structure engineering.
As a promising engineering material, RPC has been used for pedestrian bridge[3,4], arch bridge[5], and other structure engineering.
Structural Engineering International: Journal of the International Association for Bridge and Structural Engineering (IABSE), Vol. 15 ( 2005), p 32-34
China Civil Engineering Journal, Vol. 42 (2009), p 126-132.

An improved shearing displacement law for analyzing pile-soil interaction Jiang Xue-liang 1,2,a , Yang Hui1,b and Fu Jun3 (1School of Civil Engineering and mechanics, Central South University of Forestry and Technology , ChangSha, China ; 2School of Civil Engineering , HuNan City University ,YiYang ,China 3Southwest Electric Power Design Institute, ChengDu 610021,china aemail: iamjxl@tom.com (corresponding author), bemail:yanghui-dd@163.com Key words: Pile-soil slip on interfaces, Pile-soil interaction, Improved shearing displacement law, Parameter back analysis, Numerical simulation Abstract: The Soil Improved shearing displacement law is used to analyze Pile-soil interaction and this method can consider stratified foundation, but can’t consider pile-soil slip.
In another aspect, the choise of rock-soil mechanical parameters is very important in geotechnical engineering.
Fig 6 Distribution of pile side frictional resistance References: [1] Yang Lin-de etc, Back Theory and Engineering Practice of Geological Engineering ,Science Press,Beijing,1996
[6] Luo Ding-an, Numerical simulation method and program design of engineering structure, TianJin University Press, Tianjin,1995
[8] Li Su-hua, Academic Study on Bearing Capacity of End- Bearing Piles,China Civil Engineering Journal, 6(2003)100-104

Application of Controller Pilot Data Link Communication in The Training for Air Traffic Controller Zheng Xiang1, a, Weijun Pan1, b, Yu Tang2, c 1College of Air Traffic Management, Civil Aviation Flight University of China (CAFUC) 2Guanghan Sub-College, Civil Aviation Flight University of China (CAFUC) Guanghan 618307, Sichuan, China axz3_83@163.com, bpanatc@sina.com, cdolphin_zero@msn.com Keywords: Controller Pilot Data Link Communication (CPDLC), Aeronautical Telecommunication Network (ATN), Future Air Navigation System (FANS), Air Traffic Control (ATC) Abstract.
Fig. 4 Controller menu in CPDLC-based training system Fig. 5 Pilot menu in CPDLC-based training system Framework of Training Air Traffic Controller with CPDLC System As the largest “university of civil aviation” in Asia, Civil Aviation Flight University (CAFUC) is the only full-time regular institution of higher education for civil aviation pilots and air traffic controllers.
Acknowledgements This work is supported by Education Foundation of Civil Aviation Administration of China (CAAC).
[6] Human Engineering Guidance for Data Link Systems.