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A Study on Optimization of Middle Vent Shaft in Subway Tunnel Ventilation System Fang Lin1,a, Yanhua Zeng1, Xiaohan Zhou1 and Jianfeng He2 1The College of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China 2Pengshan Bureau of Housing and Urban, Pengshan, Sichuan, 620800, China afelyo@foxmail.com Key words: middle vent shaft; subway environment simulation; piston vent shaft Abstract: The air flow and temperature variation in the subway tunnel are different in the railway tunnel.
References [1] Kim Jung-Yup; Kim Kwang-Yong, Effects of Vent Shaft Location on the Ventilation Performance in A Subway Tunnel[J], Journal of Wind Engineering and Industrial Aerodynamics, Vol.97 No.5-6(2009): 174-179 [2] Krasyuk A.

Optimization of concrete with high volume of fly ash Adam Hubáček1,a, Martin Labaj2,b, Martin Ťažký3,c 1, 2, 3Technical University in Brno, Faculty of Civil Engineering, Department of Technology of Building Materials and parts, Veveří 331/95, 602 00 Brno, Czech Republic ahubacek.a@fce.vutbr.cz, blabajm1@study.fce.vutbr.cz, ctazkym@study.fce.vutbr.cz Keywords: fly ash, HVFA, concrete, optimization Abstract The demand for concrete structures grows worldwide, which raises fears about sustainable development of Portland cement production.
Acknowledgement Theoretical background for the presented results was obtained under financial support within the project FAST-S-15-2714 „Utilisation of high fly ash content concretes for special sections of engineering“.

Test research on strength of concrete shaft lining under salt disaster corrosion Xurong Li1,a, Hongguang Ji1,b, Jun Wang2,candChenglin Song1,d 1School of Civil and Enviromental Engineering,University of Science and Technology Beijing, Beijing,China 2School of Architecture Engineering,Shandong University of Technology,Zibo, Shandong , China alixr0911@163.com, bjihongguang@ces.ustb.edu.cn, clgdwangjun@126.com, dlianyi6789@163.com Key words: high strength concrete, composite salt disaster, erosion Abstract: In order to study the strength change of high strength concrete shaft lining structure in underground complex environment resisting composite salt damage erosion, C70 high strength concrete test specimens were made and composite salt disaster solutions of different concentrations were compounded.

Apparent Quality Control for the Self-compacting Concrete Jianjie Yu1,a, Weikang Yang1,b,Jieming Zou1,c and Rongwen Qiu1,d 1School of Civil Engineering, Nanchang HangKong University, NanChang 330063 China a geoyjj@163.com, byangweikang99@163.com, csanxiao11@sina.com, dm18720061626@163.com Key words: self-compacting concrete; apparent quality; mixture ratio；defoaming agent Abstract: The apparent quality of the concrete is its side performance and affects the aesthetic effect of the building.
Railway Engineering Society (In Chinese) Vol. 1 (2012), p. 88 [3] H.

Journel of Civil Engineering, 2000, 33 (5 ) : 1~12
Journal of Structural Engineering, ASCE 1996, 122(7):776～782

Shear Behavior of CFRP Prestressed Concrete Beams without Stirrups Zuohu Wang1,a, Xiuli Du2, b and Jingbo Liu1,c 1 Department of Civil Engineering, Tsinghua University, Beijing 100084, China 2 The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China awangzuohu@emails.bjut.edu.cn, bduxiuli@bjut.edu.cn, cliujb@tsinghua.edu.cn Keywords: Carbon fiber; Fiber reinforced plastics; Prestressed; Concrete beams; Shear behavior Abstract.

Models suitable for engineering applications express the deteriorations over time by means of thickness loss of the materials and they are usually based on short and/or long term field test exposures.
Journal of Materials in Civil Engineering

Seismic Analysis of the single-layered cylindrical grid shell Cheng Shen1, a,Chengwei Huang2,b,Yonglin Gao3,c 1Faculty of civil and architectural engineering,Kunming University of Science and Technology,Kun ming,650093,china a369245743@qq.com,b994048762@qq.com Keywords: Cylindrical grid shell, Dynamic peculiarity, Seismic response Abstract.
(3)Stochastic response analysis theory of structure under multidimensional seismic action Earthquake damage experience and theory indicate that the ground motion is a complex multidimensional movement when the earthquake happened,which includes three translational components and three rotating components.The responses of structure are different under the one-dimensional and multidimensional seismic action ,especially for some complex engineering structure(such as ocean platform, nuclear power plants, long-span space structure,and so on).

A NONLINEAR FINITE ELEMENT METHOD FOR FERROELECTRIC STRUCTURES WITH HYSTERESIS Huang Ruo-yu a, Wu Chang-chun b School of Civil Engineering & Mechanics, Shanghai Jiao Tong University, Shanghai 200240, China aruoyuhuang@sjtu.edu.cn, bccwu@sjtu.edu.cn Keywords: ferroelectrics; variational principle; finite element Abstract.
International J Engineering Science, 2002, 40(14):1553-1577

Introduction Reinforcement partitioned design method of complex shear walls was applied to engineering widely.
China Civil Engineering Journal. 2009(42): 43~50(in Chinese)) [2] Fu Xueyi, Qu Jiaxin, Wu Bing.