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Stability Analysis of Steel Pipe with Large Diameter under Radial Pressure during Deep Shaft Construction Jizhao Zhang School of Civil Engineering and Architecture,Anhui University of Science and Technology, Huainan, Anhui 232001, China E-mail: jzhzhang@aust.edu.cn Keywords: Industrial building; stability anaylsis; radial pressure; experimental research; numerical simulation Abstract.
Fig.7 The buckling nonlinear failure Fig.8 Loading-displacing of the buckling failure Conclusions Based on experiment and numerical simulation results, following conclusions can be gained: 1)The failure of steel pipe under radial press depends on the critical force of stability, it’s far less than its yield strength, it’s acquired according to Eq.5, between pcr and t/r is linear relation in Eq.5. 2)By mean of numerical simulation, the critical force of stability depending on a thin-walled cylindrical shell of elastic distortion can guidance engineering practice, but it’s inaccuracy, the result according to Eq.5 locates between linear and nolinear. 3) The critical force of stability in engineering practice is acquired by experiment, it’s less than the result of Eq.5, and it is 10%.
Exploration engineering, 2008,35(1):27~29(In Chinese) [4]Tieyun Cheng, Huishen Sheng.
Analysis of engineering example based on ANSYS [M].Beijing: China railway publishing house, 2007(In Chinese)

Constantinescu 3,c , Radu Negru1,d 1 University Politehnica of Timisoara, Department of Strength of Materials, ROMANIA 2 Lublin University of Tehnology, Faculty of Civil and Sanitary Engineering, POLAND 3 University Politehnica of Bucharest, Department of Strength of Materials, ROMANIA a msvina@mec.upt.ro, bt.sadowski@pollub.pl, cdancon1@form.resist.pub.ro, dradun@mec.upt.ro Keywords: polyurethane foam, impregnation, tensile test, three point bend test, compression test.
The engineering stress - engineering strain curve highlights the nonlinear behaviour of the polyurethane foams in compression, Fig. 3.
Epoxy impregnated foam 0 2 4 6 8 100.0 0.2 0.4 0.6 0.8 εεεε [mm/mm] σσσσ [MPa] 1 mm/min 5 mm/min 10 mm/min 20 mm/min a. effect of loading direction b. effect of loading rate Fig. 4 Engineering stress - engineering strain curves from compression tests It can be observed in Fig. 4.a the anisotropic behaviour of foam.

SEM and XRD Investigation on Mechanism of Expansion and High-Early-Strength of a Cementitious Composited Grouting Material Guochen Sanga, Haobo Zhangb and Yiyun Zhuc Institute of Water Resources and Hydro-Electric Engineering, Xi’an University of Technology, Xi’an 710048, Shaanxi, China asanggc2002@126.com, bhaobaozhang@163.com, czyyun@xaut.edu.cn Keywords: Cement-Based Grout; SEM; XRD; Strength; Expansion; Ettringite Abstract.
Introduction In civil engineering, grouts with non-shrinkage and high early strength are used for the grouting of generators, turbines, engines, etc., and also used for bridge bearing seats, power transmission towers and structural steel columns.
However, the non-shrinkage or expansion properties of engineering grouting materials have depended on various expansive agents that are generally unstable, and therefore not a benefit to the construction quality.
Up to now, the properties of this OPC-CAC blend cements system in grouts for engineering applications have been reported seldomly, especially, with respect to microstructural development of the system.
Aïtcin： Cement and Concrete Research, Volume 33, Issue 5, （2003），p. 635-641 [5] Hong-xia Wang，and Xing Wang：Concrete, No. 10（ 2008） （In Chinese） [6] Wu Yao; and Kai Yang： Corrosion Science and Protection Technology, No.2（2008） （In Chinese） [7] Zaozhan Sun, Sujuan Liu, Songtao Lin, and Yongjin Xie： Nuclear Engineering and Design, Vol. 216, 1-3（2002）p. 213-220（In Chinese） [8] C.

Ecological Fishway Installed with Arc-type Baffles Jiayuan Wanga, Jing Congb, Di Cui , Fei Yu and Liquan Xiec, Department of Hydraulic Engineering, Tongji Univ., Shanghai awjy0580@yahoo.cn, bcongjingtj@126.com, cxie_liquan@tongji.edu.cn Keywords: Ecological fishways, Arc-type baffle, Water flow orifice, Debris orifice Abstract.
Fishways are hydraulic structures allowing fishes upstream migration through engineering constructions in the rivers[3].
Journal of hydraulic engineering ASCE, Vol 129 (2003), p.341-347 [2] S.
Journal of Civil Engineering ASCE, Vol 16(2) (2012), p.265-272 [3] L.
Journal of hydraulic engineering ASCE, Vol 133 (2007), p.160-172 [4] C.

A New Numerical Simulation System for A Flexible Beam with Imbedded Fluid Ning Ma1, a, Hui Xu1,b and Jianwei Wang2,c 1 School of Aerospace, Xi’an Jiaotong University/State Key Library for Strength and Vibration of Mechanical Structures, Xi’an, 710049, China 2 School of Civil Engineering and Architecture,Henan University of Technology,Zhengzhou, 450052,China a maning625@163.com, bxuhui@mail.xjtu.edu.cn, clygxywjw@163.com Keywords: interior inlay viscous fluid unit (IVFU); flexible beam; self-adaptability; an expansive FLUENT UDF computing system.
Introduction Flexible structures have been widely applied in many engineering fields, such as aerospace industry, high-speed railways, turbine blades, robot arms and high-rises, etc.
In the engineering field, the flexible structures require precise, speedy and stable control without residual vibration.
[3] Yang J N, Kim J H and Agrawal A K.: Journal of Structural Engineering. 2000, 126(12): 1427-1433
[6] Ji Cong，Xu Hui, Xu Linqin: Journal of Mechanical Science and Technology for Aerospace Engineering, 2007, 26:1130~1134.

Out-of-plane Stability Analysis of Crane Jib with Auxiliary Bracing Tengfei Wang1, a, Peng Lan1,b and, Nianli Lu1,c 1 School of Mechatronics Engineering; Harbin Institute of Technology; Harbin, China a tfwanghit@163.com, b lan_p@sina.com, c n.lu@hit.edu.cn Keywords: crane jib; out-of-plane stability; auxiliary bracing; deflection differential equation; buckling characteristic equation Abstract.
Engineering and Architecture. 1997,02:99-103
Harbin: School of Mechatronics Engineering Harbin University of Civil Engineering and Architecture, 1996
Harbin: School of Mechatronics Engineering Harbin Institute of Technology, 2013.

Zarina7,g 1,2,3,7Centre of Excellence Geopolymer & Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), 01000, P.O.
Box, D/A Pejabat Pos Besar, Kangar, Perlis, Malaysia 4School of Environmental Engineering, Universiti Malaysia Perlis (UniMAP), 02600 Jejawi, Perlis, Malaysia 5Civil Engineering Department, Petra Christian University, Jalan Siwalankerto 121-131, Surabaya 60236 Indonesia 6Department of Civil and Structural Engineering, Faculty of Engineering, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia arafizarazak@unimap.edu.my, bmustafa_albakri@unimap.edu.my, cvc@unimap.edu.my, dnizar@unimap.edu.my, edjwantoro.h@peter.petra.ac.id, fwhamidon@vlsi.eng.ukm.my, gzarinayahya@unimap.edu.my Keywords: geopolymer, artificial geopolymer aggregate, XRF, XRD, SEM.

Numerical Analysis of Wind Load for Multi-span Double-pitch ight Steel Roofs Xinlei Song1,a,Chengwei Huang1,b,Jian Zheng1,c,Qiongxian Gao1d 1Faculty of Civil Engineering, Kunming University of Science and Technology, Kunming, China a249479199@qq.com, b994048762@qq.com, c595737851@qq.com, d1808344101@qq.com Keywords: Light steel roof, Numerical simulation, Turbulence model, Wind pressure coefficient Abstract.
As computer software and hardware level and computational fluid mechanics rapidly develop in the last two decades, numerical simulation techniques have been playing an increasingly important role in the research of structural wind engineering field with distinct advantages.
FEM Model The paper builds two two-span double-pitch light steel structure models according to engineering practice.
Formula (1) is commonly used to calculate wind pressure coefficient of the measuring point in wind engineering
Wind loads determined according to the Load Code are not definitely accurate, and the most accurate way is to conduct numerical simulation for wind field according to engineering practice. 3) The paper gives common computing methods for local shape coefficients of 10° and 30° pitched multi-span double-pitch light steel roofs: the front half (from eave to roof ridge) of the first span on the windward side can refer to Article 8.3.3 (1) of Load Code (GB50009—2012); other parts may not multiply by the amplified coefficient 1.25 and directly use the shape coefficients stipulated in Article 8.3.1 of Load Code (GB50009—2012).

The Study on the Impact of Microbial Community Structure by the Different Intermediate Concentration of Pharmaceutical Wastewater Fuguang Gu 1,a, Zhaobo Chen2,b,*, Xiaoyu Wang3,c, Hongcheng Wang3,d, Jinyang Hao3,e 1 School of Mapping and exploration Engineering, Jilin architectural and civil engineering institute, Changchun 130118, China 2 College of Environment and Resources, Dalian Nationalities University, Dalian 116600, China 3 School of Materials Science & Chemical Engineering, Harbin engineering university, Harbin 15001, China awhygfg_77@163.com, bczbhdx@163.com, c 651343752@qq.com, d562332623@qq.com,e 271698666@qq.com Keywords: Microbial community, 7-ACA, DNA, PCR, DGGE Abstract.
In the field of environmental engineering, it is very important for the development of the microbial utilization to study on the dynamic characters of microorganism, population distribution, the genetic diversity and the community stability in some environmental condition.

Finite Element Analysis on Ultimate Bearing Capacity of Diagonally Stiffened Steel Plates with Different Span-depth Ratio Yi Yin1, a, Taotao Zhang2, b and Xiaodan Li1, c 1School of Civil Engineering, Chang 'an University, Xi'an 710061, China; 2 China Construction Third Engineering Bureau Co.
Therefore, the steel plate with small span-depth ratio could be used as lateral force resisting component in engineering applications.
Miao: Engineering Mechanics,Vol. 23 (2006) No.2, p.84-91.
Guo: Engineering Mechanics, Vol. 20 (2003) No.2, p.49-54.