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ANN-based Structure Optimization with Fatigue Reliability Constrains Lirong Shaa and Yue Yangb Jilin Architecture and Civil Engineering, Changchun,China aslshelly2008@sohu.com, bguo.xueli@ascl.jlu.edu.cn Keywords: Artificial neural network; Optimization; Fatigue reliability; Response surface method Abstract.
Engineering Structures, 27 (2005), p. 1408–1418
Computer Methods in Applied Mechanics and Engineering, 191(2002), p. 3491-3507
Metal Fatigue in Engineering, seconded.
Journal of Basic Engineering ,85(1963), p. 528–534

Introduction Durability and construction life prediction of concrete structures is the hot topics of architectural engineering.
It gets more and more attention to civil engineering because it’s higher early strength, better permeability and micro-expansion properties than Portland cement.
It was mainly used in construction, marine engineering, emergency repair and anti-seepage engineering, producing significant technical and economic results [5, 6].
Depending on the corrosion risk of the environment to cement, corrosion threshold values also in a range of 0.4% to 1.0% at engineering generally.
Engineering design requires that thickness of protective layer of the longitudinal reinforced concrete not less than 40mm; when there is no cushion should not less than 70mm.

Comparative Study of Gobi Soil Subgrade Settlement Forecasting Methods for Double Line 2 of Lanzhou-Xinjiang Railway Zhihong Nie1, a , Li-Kun 2,b 1 School of Civil Engineering, Central South University, Chang-Sha 401175 China 2 The First Survey and Desibn Institute of China Railway, Xi-An 710043 China a niezhih@126.com, b leekun_lz@sina.com Keywords: Gobi soil subgrade, curve fitting, settlement forecasting.
The curve fitting method is widely used in practical engineering owing to its high accuracy and simple data processing.
Journal of Traffic and Transportation Engineering, 2002(04): Page 7-10
Soil Engineering and Foundation, 2005(03): Page 52-55
[3] Qian Yulin & Ding Yi, Forecasting Settlement of Roadbed and its Engineering Application.

Derailment Analysis of Tilting Railway Vehicles with Wind Loads Yung-Chang Cheng1, a, Chin-Te Hsu1,b, Te-Wen Tu2,c, Chern-Hwa Chen3,d, Meng-Ju Tsai1,e 1Department of Mechanical and Automation Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung, 811, Taiwan 3Department of Mechanical Engineering, Air Force Institute of Technology, Kaohsiung, 820, Taiwan 4Department of Civil and Environmental Engineering, National University of Kaohsiung, Kaohsiung, 811, Taiwan ayccheng@nkfust.edu.tw, bu9615923@nkfust.edu.tw, ctu123@ms17.hinet.net, dchchen@nuk.edu.tw, eu9914814@nkfust.edu.tw Keywords: Tilting vehicle system, wind loads, tilting angle, derailment quotient.
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Vol.212, No.1, (1998), pp. 1-6
Journal of Bridge Engineering, Vol.8, No.1, (2003), pp.46-55
Journal of the Chinese Society of Mechanical Engineers, Vol.32, No.2, (2011), pp.119-130
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Vol.255, (2011).

Engineering Fracture Mechanics, Vol. 69(2002), p.367
Engineering Structure, Vol. 26(2004), p.1165
Nuclear Engineering and Design, Vol. 224(2003), p.253
Nuclear Engineering and Design, Vol. 195(2000), p.261
Engineering Mechanics, Vol. 25(2008), p.219(In Chinese).

Study on Calibration for Parameters of Johnson-Cook Constitutive Equation JianGuang Li1, 2, a, JieDong Cao3 1College of Engineering, Peking University, Beijing, 100871, China 2College of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, China 3 Institute of Applied Physics and Computation Mathematics of Peking, Beijing, 100088, China aljg2003@mail.ustc.edu.cn Keywords: Material Parameters for Numerical Simulation, Johnson-Cook Constitutive Equation, Quasi-Static Test MTS, Impact Compression test SHPB, Parameters Calibration.
H. proposed a constitutive model in 1983[1] in order to deal with large strain deformation, high strain rate and high temperature of ductile metal in engineering problem.
The engineering strain in the specimen can be expressed as following: (8) After the formula(7) is introduced to the formula(8), following formula will be got: (9) Then engineering strain rate of the specimen is easily got by differentiated formula (9): (10) The stresses at the ends of the specimen can be got by Hooke’s law: ; (11) In which A0 is the initial cross sectional area of the specimen.
Then average stress of the specimen is expressed as following: (12) According to assumption of uniform stress in the specimen and forces equilibrium of the ends of specimen, we can get following formula: (13) Using formula (13) and (12), the engineering strain, engineering strain rate and stress in the specimen are respectively as following: (14) (15) (16) We know that the equivalent stress and strain are equal to the true stress and
The engineering stress and strain can be change into the true stress and strain using the following relations: (17) Parameters Calibration of Johnson-Cook Constitutive Model In order to calibrating parameters of the Johnson-Cook constitutive equation, the following three steps must be done.

Long and Short Human Hair Fiber-Reinforced Polymer Composites: Mechanical Properties for Engineering Applications Segundo Manuel Espín-Lagos1,a, Anahí Raquel Reinoso Arias1,b, Jorge Patricio Guamanquispe-Toasa1,c, and Enrique Mauricio Barreno Avila1,d,* 1Facultad de Ingeniería Civil y Mecánica, Universidad Técnica de Ambato, Ambato, Ecuador asespin@uta.edu.ec, bareinoso2464@uta.edu.ec, cjp.guamanquispe@uta.edu.ec denriquebarrenoavila@gmail.com Keywords: Human Hair Composite Material, Volumetric Fraction, Mechanical Properties.
Introduction Nowadays, composite materials are the favorite material choice for many engineering applications; they have been the market’s dominant material which not only resist more than other materials, but also have outstanding mechanical properties. [1-2] In the last decade, biological products have become an innovative reinforcement for composite materials, from an economic and ecological perspective.[3-4] Unsurprisingly, there is a rise in environmental awareness in the world that has sparked interest in the research and development of these materials. [5] Bio fibers have a plethora of advantages over traditional reinforced materials.[6] In this experimental study, the research team worked with hair fibers, which are composed of three structures: cuticle, cortex and medulla. [7] The cuticle is the outermost part of the hair fiber.

3D FEM analysis on settlement characteristics of composite foundation using ram-compacted pile in high-speed railway Shi cong1, Huang yong1, Liu rui1 1 Department of Architectural and Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China Keywords: High-Speed Railway; Ram-Compacted Pile; Fem; Settlement and Deformation Abstract: In engineering practice, there is an increasing application of ram-compacted pile composite foundation for its economical and environmental consideration.
However, Beijing-shanghai high-speed railway is located in country’s east coast region where geological condition is poor for engineering consideration.
ENGINEERING MECHANICS(19(3)), 90-94

Comparison and Analysis on Four International Seismic Isolation Design Codes for Bridge Tieyi Zhong 1, a, Jiying Lv1 and Junhui Feng2 1 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China 2 Guiyang Municipality Development and Reform Commission, Guiyang 550081, China atyzhong2008@163.com Keywords: bridge, seismic isolation, lead rubber bearing, code comparison.
As one kind of primary passive vibration control technology, the seismic isolation technology provides a new way for anti-seismic of bridge and has got initial application in practical bridge engineering.
Study on Elastoplastic Bridges Seismic Isolation System, Journal of Structural Engineering, 123 (4): 489-498, 2000
Engineering Structures, 2002,24: 1001-1013

Identification and Evaluation of Steel Structure After Fire Lan Yao1,a, Yumin Liu2,b, Yongzhi Zuo2,c and Qiaozhi Lu2,d 1College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China 2Beijing Building Construction Research Institute Co., Ltd., Beijing 100039, China awl8594@sina.com, blymsfjd@163.com, czuoyongzhi@tsinghua.org.cn, dluqiaozhi@126.com Keywords: fire; redistribution of internal forces; steel structure; identification.
From the results of this appraisal, suggestions are made which could be regarded as a guide in similar engineering projects in the future.
In the practical engineering, the surface of steel artifacts is usually covered with a certain thickness of the fireproofing coatings, it is not an ideal component, but existing deviations between theory and practice.
[4] GB 50205-2001, Code for Construction Quality Acceptance of Steel Structure Engineering