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Reflected amplitude of elastic wave at free surface Xueying Yang1,a, Bo Zhang2,b and Dunfu Zhang3,c 1Shandong Urban Construction Vocational College, Jinan , Shandong P.R.China 250014 2School of Civil Engineering, Shandong University, Jingshi Road 17923#, Jinan, Shandong P.R.China 250061, Corresponding Author 3 School of Civil Engineering, Shandong University, Jingshi Road 17923#, Jinan, Shandong P.R.China 250061 a274679821@qq.com, bzhangbo1977@sdu.edu.cn, czhangdf@sdu.edu.cn Keywords: elastic wave; reflected amplitude; free surface.
Introduction The elastic wave theory is one of the most important theories in the engineering application[1][2].The elastic wave has many advantages such as long propagation distance, strong penetration capability and so on[3][4][5].
The elastic wave theory has been widely used in many fields such as seismic exploration, hydraulic engineering, civil engineering, marine survey , exploration engineering and so on[6][7].
The introduction of engineering wave theory.

The Finite Element Model Study of the Pre-twisted Timoshenko Beam Changhong Chen1,a, Ying Huang 2,b, Jian Shan 3,c 1Institute of Mechanics and Civil Engineering, Northwestern Polytechnical University, Xi’an, China 2College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, China 3College of Civil Engineering, Southeast University, Nanjing,China achanghong.chen@nwpu.edu.cn, bcch-by@163.com, cshanjian@hotmail.com Keywords: Pre-twisted; Timoshenko beam; Finite element; Stiffness matrix, ANSYS Abstract: The paper studies a new mechanical model of pre-twisted Timoshenko beam.
Naturally twisted beams have wide range applications in aviation, mechanical engineering, such as rotating helicopter blades, gears and turbine blades, and so on.
Displacement Modes In order to more accurately solve practical engineering problems in the pre-twisted beam, we must give an effective numerical methods.
Engineering Mechanics, 2009,26 (6) :166-171 [In Chinese] [6] Chen Xingshen, Chen Weiheng.
Computer Methods in Applied Mechanics and Engineering 1998 (165): 43-127 [8] Zhang Zhiyong.

Experimental Study of Flexural Tensile Strength of Sand Concrete Plates Reinforced with Metallic Fibers Saloua Melais1,a, Meriem Fakhreddine Bouali1,b,* 1Department of Civil Engineering, Faculty of Sciences & Technology, University of Mohamed Cherif Messaadia, Souk Ahras, Algeria as.melais@univ-soukahras.dz, b,*m.bouali@univ-soukahras.dz Keywords: Sand concrete, plates, traction strength, metallic fiber, granulated slag.
European journal of environmental and Civil Engineering, (2017). doi:10.1080/19648189.206.1277372
[13] Huang Chenkui & Zhao Guofan, Properties of Steel Fibre Reinforced Concrete Containing Larger Coarse Aggregate, Civil Engineering Department, Dalian University of Technology, Dalian 116023, (1995) China March
Batson, Mechanics of crack arrest in concrete, American Society of Civil Engineers Proceedings, Journal of the Engineering Mechanics Division 89 (EM3) (1963) 147–168
Barakat, Salah Altoubat, Concrete welding using steel fibers, Civil and Environmental Engineering, University of Sharjah, Sharjah, United Arab Emirates,(2010)

A Numerical Evaluation of Insulated CFRP-Strengthened RC Beams Exposed to Fire Baris Sayin1,a and Erdem Damcı2,b 1PhD, Visiting Scholar, Department of Civil Engineering and Engineering Mechanics, The University of Arizona, 85721, Tucson-Arizona, USA 2Assist.
Hamid Saadatmanesh, Department of Civil Engineering and Engineering Mechanics, The University of Arizona for his technical guidance and support.
Conference on Advance in FRP Composites in Civil Engineering, CICE 2010.
Lu: China Civil Eng.
Bergmeister, Ed.: Proceedings of the 3rd International PhD Symposium in Civil Engineering.

Experimental program of indoor model research about single pile negative friction CHEN Chang-liu1,a, WEI Song-qi 2,b ,YE Shuai-hua3,c and LIU Yan 4,d 1School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2 School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 3School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 4 China Mobile Group Gansu Co.
Through the experimental study on the reduced scale model, we can deepen the understanding of the action mechanism of negative skin friction resistance of the pile, which could guide the engineering practice and design.
(2) The test can provide meaningful guidance for the engineering design and practice.
Reference [1] Johannessen I J，Bjerrum L，Measurement of the Compression of a Steel Pile to Rock due to Settlement of the Surounding Clay．Proceedings of the Sixth International Conference on Soil Mechanics and Foundation Engineering．Montreal，1965，V01．2：261-264
[5] Endo M，Minou A，Kawasaki T，Shibata T．Negative Skin Friction Acting on Steel Pipe Pile in Clay,Proceedings of the Seventh International Conference on Soil Mechanics and Foundation Engineering,Mexico City, 1969, V01．2：85-92.

On the Seismic Performance of Elevated Water Tanks and their Control Using TLDs Aparna (Dey) Ghosh1,a, Soumi Bhattacharyya 2,b, Anuja Roy 3,c 1Associate Professor, Department of Civil Engineering, Bengal Engineering and Science University, Shibpur, Howrah, India 2Junior Research Fellow, Department of Civil Engineering, Bengal Engineering and Science University, Shibpur, Howrah, India 3Research Scholar, Department of Civil Engineering, Bengal Engineering and Science University, Shibpur, Howrah, India aaparnadeyghosh@gmail.com, bsoumibhttchr86@gmail.com, canuja.civil@gmail.com Keywords: Elevated Water Tank, Tuned Liquid Damper, Seismic Vibration Control Abstract.
Presently, there are several worldwide applications of the TLD as a passive vibration mitigation device in civil engineering structures [9].
Sun, Parametric studies on tuned liquid damper (TLD) using circular containers by free-oscillation experiments, Structural Engineering/Earthquake Engineering, JSCE. 5(1988) (2) 381–391
Dargush, Passive energy dissipation systems in structural engineering, Wiley, UK. (1997) [10] A.
Bridge & Structural Engineer, xxiii(1993), (1)

A Computational Study on Tensioned Fabric Structure in the Form of Richmond’s YEE Hooi Min1,a*, ARABI Natasha Zureena1,b, ABD MALEK Nurul Afiqah1,c , ROHIM Rohamezan1,d and YUSUFF Amer 1,e 1Faculty of Civil Engineering, Universiti Teknologi MARA, 13500 Permatang Pauh, Pulau Pinang, Malaysia a*yhooimin@yahoo.com, bnate111092@gmail.com, cfie.malique@gmail.com, drohamezan627@ppinang.uitm.edu.my, eameryusuff@ppinang.uitm.edu.my Keywords: Form-finding, tensioned fabric structure, initial equilibrium shape, minimal surface, Richmond’s and nonlinear analysis method.
D. dissertation, School of Civil Engineering, Universiti Sains Malaysia, Pulau Pinang, Malaysia, 2011
Abdul Hadi, Soap film Enneper model in structure engineering, in Advanced Materials, Structures and Mechanical Engineering: Proceedings of the International Conference on Advanced Materials, Structures and Mechanical Engineering, Incheon, South Korea, May 29-31, 2015
Abdul Hadi, Enneper in Tensioned Fabric Structures Engineering Development, in Conference on Mathematical and Computational Methods in Science and Engineering, 2015
Abdul Hadi, Tensioned Fabric Structures with Surface in the Form of Chen-Gackstatter and Monkey Saddle, International Journal of Structural and Civil Enginering Research, Vol. 4, No. 4, pp. 331-335, 2015

A Finite Element Analysis of Cold-Formed Z-purlins Supported by Sandwich Panels Olga Tusnina Moscow State University of Civil Engineering (MGSU) 129337, Russia, Moscow, Yaroslavskoe shosse, 26 lazoltus@mail.ru Keywords: Thin-walled structures; Z-purlins; Finite element analysis; Sandwich panels Abstract.
Nowadays buildings based on lightweight steel skeletons are widespread in civil and industrial engineering.
Design of modern steel roofing via improved distortional approach: Proceedings of the 11th WSEAS International Conference on sustainability in Science Engineering, Timisoara, Romania Vol.
Experimental research and integrated FEM modelling for sheet roof covering with thermal insulation: Mechanics and Mechanical Engineering, Vol. 14, No. 2 (2010), 183-192 pp

Nonlinear Stability Analysis on the concrete casting step of Long-span Concrete-filled Steel Tube Arch Bridge WANG Ji 1,a ，ZHANG Ming-zhong2,b，GUO Xiao-li2,c 1 The Design and Research Institute, Wuhan University of Technology, No.122, Luoshi Road, Wuhan, 430070, P.R.China. 2 School of Civil Engineering and Architecture, Wuhan University of Technology, No.122, Luoshi Road, Wuhan, 430070, P.R.China.
a hmywj@263.net, bzmzfj@126.com, cgxl201@whut.edu.cn Keywords: concrete-filled steel tube (CFST) arch bridge; finite element; construction process; nonlinear; stability Abstract: In recent years, concrete-filled steel tube (CFST) was developed and used extensively in civil engineering in China.
Engineering situation Engineering background Jingyang River Bridge is located in the west of Jingyang town which is in the middle reaches of Qingjiang in Hubei province of China.

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Journal of Seismic Engineering and Engineering vibration, 27-3(2007), p.95-103 [7]Yang Z.C. and Yu Z.F.
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Recent advance in research on damage diagnosis for civil engineering structures [J].
China Civil Engineering Journal, 36-5(2003), p.105-110 [11]Zong Z.H., etc.