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Atanasiu Faculty of Civil Engineering and Architecture, "Gh.
Recent results of research in computational earthquake engineering highlights the real need for re-evaluation of dynamical models of constructions, after they have experienced several seismic events.
The re-evaluation should be based on their real engineering performance of the structure experience during several earthquakes.
Recent research in the field highlights the real need for adjustment of structural models, especially for large-scale civil engineering structures, after each seismic event.
Since in earthquake engineering the practitioners are using mostly information concerning the eigenvalues, the correction of the stiffness matrix should be based on measured eigen-frequencies of the undamped system, which are easily to be recorded.

The optimization of mechanized earthwork processes Lucia Paulovičová1,a* 1Slovak University of Technology in Bratislava, Faculty of Civil Engineering, Bratislava, Slovakia axpaulovicoval@stuba.sk Keywords: earthworks, machines, optimization, multi-criteria methods Abstract.
The aim of this paper is to show the possibilities of the using the selected multi-criteria method in the area of civil engineering, especially in the earthwork processes and gives the structured approaches with evaluation of selected alternatives of machines.
PhD dissertation, Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 1973
Canadian journal of civil engineering, vol. 25, no. 3, pp. 604-617, 1998
Procedia Engineering, 15, pp. 4205–4210

DATA BASE FOR PUNCHING SHEAR STRENGTH OF REINFORCED CONCRETE SLABS AND EVALUATION FOR CCES EQUATION Qiuning Yang 1,2,a, Mingjie Mao 1,2,b and Sumio Hamada 3,c 1 School of Civil and Hydraulic Engineering; Ningxia University; Yinchuan 750021; China 2 Engineering Technique Research Center for water Saving Irrigation and Water Resources; Yinchuan 750021; China 3 Department of Civil Engineering; Yamaguchi University; Ube 7558611 Japan ayangqn@nxu.edu.cn, bmaomj@nxu.edu.cn, cshamada@yamaguchi-u.ac.jp Keywords: reinforced concrete slab, punching shear strength, data base, factor of safety, compressive strength, steel ratio, effective slab depth, evaluation.
The data have been collected from ACI5 journal, Journal of Japan Society of Civil Engineering6, and some other journals.
[3] Yukio Maeda and Shigeyuki Matsui: “punching shear load equation of reinforced concrete slabs,” Journal of Construction Management and Engineering , No.348/ V-1.pp.133-141.1984.8 [4] CCES, “GB50010-2002, ”China Civil Engineering Society, 2002 [5] ACI Committee 318: “Building Code Requirements for Reinforced Concrete (ACI 318-83),” ACI 1983 [6] JSCE, “Standard Specification for Concrete structures-2002, ”Japan Society of Civil Engineering, 2002 [7] AIJ: “Design Standards of Reinforced Concrete, ” Architectural Institute of Japan, 1991.4 [8] Eurocode2,“Design of Concrete Structural-Part 1 : General Rules and Rules for Buildings,” (ENV 1992-1-1), December 1991 [9] BS 8110-85, “Structural Use of Concrete,” British Standards Institute , London , 1985 [10] Comite’ Euro-International du Beton, “CEB-FIP Model Code 1990,” CEB Bulletind Information, No213/214, Lausanne, Switzerland, May 1993 [11] Yoshio Kakuta, Akio Ito and Yosihio Fujita: “Experimental Study on Punching Strength of
Reinforced Concrete Slabs,” Journal of Japan Society of Civil Engineering, No.229 pp.105-115, 1974.9 [12] Tadayoshi Ishibasi, and Keiichi Saito: “The Punching Shear of Reinforced Concrete Slab-consideration,” JCI Annual Convention e No.6, pp.629-632, 1984 [13] Elstner, Richard, C.
[30] Sumio Hamada, Kenji Nakagawa and Masuo Naruoka: “On The Treatment of Censored Data In Fatigue Test,” Journal of Japan Society of Civil Engineering , No.189, pp.99-105, 1971.5 [31] Yamada, T., Nanni, A. and Endo, K.: “Punching Shear Resistance of Flat Slabs: Influence of Reinforcement Type and Ratio,” ACI Structural Journal, Sep.

Optimization Design of Earthquake-Resistant Structure Taking Discrete Variables into Account Hui Ji1, a and Hongsheng Zhao 2, b 1Department of Civil Engineering, Taiyuan University, Taiyuan 030009, Shanxi, China 2College of Mechanical Engineering Taiyuan University of Technology ,Taiyuan , Shanxi, China, ajihui1965@126.com, bh_s_zhao@126.com Keywords: Earthquake-Resistant Structure; Discrete Variable; Structural Module; Objective Function; Multiple-Target Optimization Design Abstract.
The theory and methods presented in this paper will be helpful for the structural design engineers and the researchers.
It can raise the design quality, promote design efficiency and reduce engineering cost, and so as bring a huge economic interest.
In this paper, according to the characteristics of civil engineering, the discrete sectional dimensions are taken as the design variables, an optimization program for shear frame structure is programmed [2], and the program has been applied to the practical calculation example, and the function relation formula between the energy and the construction cost has been set up, and this work will be helpful for the construction unit to choose the best plan.
Reference [1] Wang Shuyu, etc., (1991), Theory and Methods of Optimization and Their Engineering Applications, Hangzhou,Zhejiang University press.

Physical based techniques for monitoring corrosion in RC Zhupeng Zheng1,2, a and Yu Song2,b* 1Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen, China 2Department of Civil Engineering, Xiamen University, Xaimen, China axpeng@xmu.edu.cn, bsongyu@xmu.edu.cn *Corresponding Author: Associate Professor Yu Song, E-mail: songyu@xmu.edu.cn Keywords: steel reinforced concrete; steel corrosion; monitoring; physical based techniques Abstract: It is imperative to develop effective techniques to monitor the condition of steel corrosion in reinforced concrete (RC) for ensuring structural serviceability and durability.
Introduction Corrosion of steel and rebar in concrete structures is one of the most frequent causes for the failure of civil infrastructures such as sea tunnels.
Some researches on monitoring corrosion in RC by FBG have been done by the authors of this paper and a new corrosion sensor based on FBG is ultimately used in civil infrastructures [13, 14].
Materials in Civil Engineering, vol. 25, no. 8, (2013):1022-1029
Lei, Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors, Frontiers of Mechanical Engineering in China, vol 4. no. 3,(2009):.316-319

Study and Comparison of Characteristics of Models of Hollow-Core Slabs, Reinforced Concrete and Steel-Fiber Concrete SURIANINOV Mykola1,a, NEUTOV Stepan1,b, KORNEIEVA Iryna1,c* and SYDORCHUK Maryna1,d 1Odessa State Academy of Civil Engineering and Architecture, street Didrikhson, 4, 65029, Odesa, Ukraine asng@ogasa.org.ua, bneutov.stepan@gmail.com, ckorneevairinaborisovna@gmail.com, dmarinasidorchyk@ukr.net Keywords: floor slab, model, experimental studies, steel-fiber concrete, steel fiber, bearing capacity, deformability, crack resistance.
Introduction Hollow core slabs are widely used in industrial and civil engineering.
, Department of Civil and Environmental EngineeringPolitecnico di Milano, Milan, Italy, Materials and Structures 52 (1), . doi.org/10.1617/s11527-018-1302-0
Structural Engineering Research Group.
Department of Civil and Environmental Engineering.

Nonlinear Static Analysis for Progressive Collapse Potential of RC Building WANG Tie-cheng1,a , LI Zhi-ping2,b 1 School of Civil Engineering, Tianjin University /Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin300072, China 2 School of Civil Engineering, Tianjin University, Tianjin300072, China a wangtiechengtj@126.com, blizhiping_ren@sina.com Keywords: progressive collapse; nonlinear static analysis; concrete structures; alternative load path; numerical simulation; floors.
Introduction After several disastrous building collapses, progressive collapse has become a hot issue in civil engineering.
[3] Toshikazu Kabeyasawa, in: ATC&SEI 2009 Conference on improving the Seismic Performance of Existing Building and Other Structures.(2009) [4] Lu Xin-zheng , Lin Xu-chuan , Ye Lie-ping , Li Yi , Tang Dai-yuan, in: Engineering mechanics, vol.27, (2010)p.64-70.

., Ph.D, professor of the department of information systems, technologies and automation construction, Galkin Andrey G. phd student, Moscow State University of Civil Engineering, 129337, Russia, Moscow, Yaroslavskoyeshosse, 26.
Moscow State University of Civil Engineering, 129337, Russia, Moscow, Yaroslavskoyeshosse, 26.
However, the development of information technologies eliminates the need in hypotheses and assumptions that have been applied by engineers in the pre-computer period.
Elastic Plastic Cylindrical Shells Strength under Static Loading and Unloading, Industrial and Civil, 1-10 [2]Geniev G.A., Kurbatov A.S., Samedov F.A.
Proceedings of Moscow State University of Civil Engineering.

Unbonded prestressing was originally introduced by the American engineer E.
Newmark, Statistical analysis of the response of nonlinear systems subjected to earthquakes, in: Civil Engineering Studies SRS-468, Illinois Univ.
Dept. of Civil Engineering, (1979)
Wu: China Civil Eng.
Civil Eng.

Analysis on Self-centering Capacity of Prefabricated Frame Joints Yun ZOU1,a, Hui LIN2,b, Wei-qiang MA1,c 1School of Environment Civil Engineering, Jiangnan University, Wuxi Jiangsu 214122, China; 2School of Civil Engineering, Tongji University, Shanghai 20092, China.
China Civil Engineering Journal.2010, 1(43):403-410
[6]Xiaoning CAI, Shaoping MENG, Weiwei SUN: Experimental research on self-centering frame side joint’s seismic performance[J](IN CHINESE).China Civil Engineering Journal. 2012, 45(12):29-37.