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A Comparative Research on Thermal Stresses Calculated from Different Element Models of a Concrete Continuous Box-Girder Bridge Feng Xu1,a, Bo Wang 2,b, Hailong Zhang3,c 1,2,3 School of Civil Engineering & Mechanics, Huazhong University of Science & Technology,Wuhan 430074 CHINA a xufeng1979917@163.com, bwangbohust@126.com, czhhlhust@163.com Keywords: concrete continuous box-girder, gradient temperature load, thermal stress, beam element, solid element.
Introduction Many previous experimental/theoretical researches (e.g.[1,2]) and engineering accidents indicated that the temperature effect upon bridge structures may be notable, in some circumstances, even much more prominent than that caused by live loads.
Bridge engineers have given more and more weight to temperature effect, as an outcome of which the gradient temperature distribution along vertical direction in cross section that specified in China's code (JTG D60-2004) was redefined referring to the specifications of AASHTO[3,4].
Calculated from the beam model, total thermal stress results at top of the deck centre in the middle cross section of the mid-span closure segment is -8.08MPa, while the result from the solid model is -8.74MPa (See Figure 8(a)), which is close enough to -8.08MPa in engineering issue.
Froli, in: Statistical Analysis of Thermal Actions on a Concrete Segmental Box-girder Bridge, Journal of the International Association for Bridge and Structural Engineering (IABSE) Vol.10, No.1(2000), p. 111-116 [3] Ministry of Communication of the People's Republic of China: General Code for Design of Highway Bridge and Culverts (JTG D62-2004) (China Communications Press, Beijing 2004) [4] American Association of State Highway and Transportation Officials (AASHTO): LRFD bridge design specifications (2004), 3rd Ed., Washington, D.C

Introduction Diamond saw blades are widely used in the civil engineering such as stone machining, sawing of various cement and concrete road surface.
Wang: Tool Engineering Vol. 35(7) (2001), p. 21 [2] Y.N.
Wang: Tool Engineering Vol. 35(8) (2001), p. 10 [3] Y.Q.
Li: Diamond & Abrasive Engineering Vol. 2(11) (1999), p. 2 [4] G.Y.
Hayasaka, et al: Journal Society for the Japan Society for Precision Engineering Vol. 45(8) (1999), p. 35 [6] J.M.

Parallel Heat Transfer Model of a Panel with Phase Change Material for Thermal Storage Applications Computed on Graphics Processing Units Lubomir Klimes1,a, Pavel Charvat1,b, Milan Ostry2,c, Josef Stetina1,d 1Brno University of Technology, Faculty of Mechanical Engineering, Technicka 2896/2, 616 69 Brno, Czech Republic 2Brno University of Technology, Faculty of Civil Engineering, Veveri 331/95, 602 00 Brno, Czech Republic aklimes@fme.vutbr.cz, bcharvat@fme.vutbr.cz, costry.m@fce.vutbr.cz, dstetina@fme.vutbr.cz Keywords: Heat transfer model, Phase change materials, PCM panel, latent heat, Thermal energy storage, Parallelization, GPGPU, Graphics processing units.
Nowadays, optimal design in engineering requires to perform mathematical modeling and computer simulations by means of numerical models.
FSI-S-14-2355 and by research and scientific activities of NETME Centre, regional R&D centre built with the financial support from the Operational Programme Research and Development for Innovations within the project NETME Centre (New Technologies for Mechanical Engineering), Reg.
Stefanescu: Science and Engineering of Casting Solidificiation (Springer, New York 2010) [9] S.V.

Shear Strength of Reinforced Concrete Frame Column by Neural Network Model Xi Liu1,a, Hui Wei1,b, Tao Wu1,c , Boquan Liu1,d, Yu Zhang1,e 1School of Civil Engineering, Chang’an University, Xi’an, Shaanxi, China alliuxii@163.com, bweihuichd@163.com, cwutao@chd.edu.cn, dbqliu@chd.edu.cn, e470795672@qq.com Keywords: reinforced concrete; frame column; BP-ANN model; shear capacity Abstract.
References [1] Tao Wu, Xi Liu, Guohua Xing: Engineering mechanics, Vol. 30 (2013), p.195 (In Chinese) [2] Cladera Bohigas A, in: Shear design of reinforced high-strength concrete beams, University Politècnica de Catalunya, 2003
[3] Sanad A, Saka M P: Journal of Structural Engineering, Vol. 127(2001), p.818 [4] Yi Che, Jie You, Dongpo Xu: Building structure ,Vol. 41(2011), p. 223(In Chinese) [5] Demir F: Construction and building Materials, Vol. 22(2008), p.1428 [6] Cladera A, Mari A R : Engineering Structures, Vol. 26(2004), p. 917 [7] Cladera A, Mari A R: Engineering structures, Vol. 26(2004), p.927 [8] Yang K H, Ashour A F, Song J K: Int.

Cardiff School of Engineering, Division of Mechanical Engineering Cardiff University, Queen's Buildings, The Parade, PO Box 925 Cardiff, UK, CF24 0YF Email: Beckp1@cf.ac.uk Key Words: Acoustic Emission, Moment Tensor Analysis, Concrete.
In concrete engineering, AE has been used as both a technique to investigate the structural integrity of concrete structures and as an aid to study the material properties.
Rhys Pullin at Cardiff School of Engineering, Cardiff University and Mr Timothy Bradshaw of Physical Acoustics LTD for their valuable efforts during these experiments.
"A review of acoustic emission in civil engineering with emphasis on concrete" Journal of Acoustic Emission, Vol. 8, No. 4, (1989), pp 93-98

Numerical Study on Buckling Behaviour of Composite Cylindrical Shells under Axial Compressive Load with Asymmetric Meshing Technique Zia ul Rehman Tahir a, Parthasarathi Mandal b School of Mechanical, Aerospace and Civil Engineering University of Manchester, Pariser Building, Sackville Street, M13 9PL, UK a ziartahir@uet.edu.pk, b p.mandal@manchester.ac.uk Keywords: Composite Cylindrical Shell, Finite Element Analysis, Perturbation Technique, Asymmetric Meshing Technique, Linear Eigenvalue Analysis, Non-linear Riks Analysis Abstract.
Acknowledgment The first author thanks to University of Engineering and Technology, Lahore, Pakistan for financial support for Ph.D. studies under Faculty Development Programme.
Variational Methods in Engineering, Southampton University Press, University of Southampton, Southampton, GB, 1972
Bathe, Finite Element Procedures in Engineering Analysis, Prentice Hall, New Jersey, 1982
Bisagni, Numerical analysis and experimental correlation of composite shell buckling and post-buckling, Composites Part B: Engineering, 31 (2000) 655-667

Study on Industrial Water-saving System －Taking the Ningdong Energy and Chemical Base as an Example Juan Liu1,2,3,a, Cheng Yang1,b and Juping Zhang1,2,3,c 1School of Civil and Hydropower Engineering, Ningxia University 2Project Research Center of China Ministry of Education on Utilization of Water Resources for Agricultural Purposes in the Dry Areas 3Ningxia Research Center on Technology of Water-Conservation Irrigation and Control of Water Resources Utilization 489 Rd.
Water supply project of the Ningdong Base mainly includes Ningdong water supply project, Da quan waterworks, Sun Mountain water supply engineering, mine drainage water use, utilization of reclaimed water, and the local surface water resources engineering.
Table 1 The statistical chart of the base water supply quantity Water supply project Quantity of water supply (104 m3) Percentage (%) Ningdong water supply project 2767.00 63.31 Da quan waterworks 857.73 19.62 sun mountain water supply engineering 116.00 2.65 mine drainage water use 630.00 14.41 Utilization of reclaimed water 0.00 0.00 surface water resources engineering 30.00 0.69 Total 4400.73 100.00 Prediction of water consumption in different period.

., Nanchang, Jiangxi, China 2 Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi, China a 184821309@qq.com, b Corresponding author:1004459382@qq.com Keywords: tunnel lining, diseases, model test, 2-D numerical simulation, GPR Abstract.
And the acquisition parameters were selected based on the Nyquist's Theorem and engineering experiences.
A Laboratory Simulation of High Frequency GPR Responses of Damaged Tunnel Liners [J].The International Society for Optical Engineering.2010.40 (11):805-811
Chinese Journal of Geotechnical Engineering (in Chinese), 2012, 34 (6): 1160- 1165
Chinese Journal of Engineering Geophysics.

Kalam3,d, and MAULINDA Ayu4,e 1Department of Mechanical and Industrial Engineering, Universitas Syiah Kuala, Banda Aceh 23111, INDONESIA 2Department of Mechanical Engineering, Universitas Negeri Padang, 25173 Padang, Sumatera Barat, INDONESIA 3School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, AUSTRALIA 4Undergraduate Study Program, Mechanical Engineering Department, Universitas Syiah Kuala, Banda Aceh 23111, INDONESIA arudi.kurniawan@usk.ac.id, b∗zahrul.fuadi@usk.ac.id, cdieter@ft.unp.ac.id dMdAbul.KALAM@uts.edu.au, eayu.maulida070601@gmail.com Keywords: Friction, Wear, Bacterial Cellulose, Eco-Friendly, Polyolester, Abstract.
Introduction Efforts to minimize energy losses caused by friction and wear through the use of fluid lubricants have been widely conducted in mechanical engineering.

Udalova2,d, A.S.Salov2e 1Kharkiv National University of Civil Engineering and Architecture, Department of Mechanization of Construction Processes, Sumska st. 40, 61002, Ukraine 2Ufa State Petroleum Technological University, Mendeleeva St. 195, Ufa, 450000, Russia avvinnichenko@ukr.net, bvryazanov@hotmail.com, cgabitov.azat@mail.ru, dvakil2004@mail.ru, esalov@list.ru Keywords: Cement composition, hydration of oxides, hydrocarbonate.
The following recommendations are to be followed when engineering exterior walls of vibropressed concrete blocks to prevent efflorescence in the masonry surface: - Three-layer exterior walls made of small piece materials are to be designed with air space for drying the insulation applied, with the thickness thereof being taken as 4-6cm; - Upper edges of all raised parts (cornices, blocking courses, and band courses) should have slope outside for water outlet and drip edges; - Upper surface of cornices, blocking courses, and band courses should be covered by metal; - Overflow structures such as outlet pipes, rainwater heads, gutters and canopies are to be installed; - Exterior surface of brick masonry should be protected by water-repellent compositions (basement wall is to be hydrophobizated) The following recommendations are to be followed when making exterior walls of vibropressed concrete blocks to prevent efflorescence: - Application of materials (cement, aggregates, chemical
Reasons for appearance and control methods of efflorescence formation on surface of engineering structures // Proceedings of the 1st conference on concrete and reinforced concrete problems “Concrete at the turn of the third Millenium”.
Stages of efflorescence occurrence in exterior wall surface of buildings // Construction bulletin of the Russian Academy, Proceedings of “construction” section of the Russian Academy of Engineering (2009) 44-45
Series: Engineering sciences V 9 No 6.2 (2013) 22-24