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Influence of the Load-Bearing System of a High-Rise Building on Its Stiffness IVANKOVA Olga1, a* and KONECNA Lenka 1, b 1Slovak University of Technology in Bratislava, Faculty of Civil Engineering, Department of Structural Mechanics, Radlinskeho 11, 813 68 Bratislava, Slovakia aolga.ivankova@stuba.sk, blenka.konecna@stuba.sk Keywords: static analysis, dynamic analysis, modal analysis, high-rise building, load-bearing system, eigen mode, eigenfrequency, seismic areas in Slovakia Abstract.
The advances in the technology, the development of new materials and the extension of cities are the reasons of this trend in civil engineering.
Melcer, Dynamics of civil structures, first edition, University of Zilina, Zilina, 2000, 199 pp
Diploma work, Slovak University of Technology in Bratislava, Faculty of Civil Engineering, Department of structural mechanics, Bratislava, 2003.

PDF417 Barcode and Its Application in Aviation Spare Parts Management Xu-Sheng Gan1,a, Jing-Shun Duanmu2,b and Jian-Guo Gao2,c 1 XiJing College, Xi’an, Shaanxi, 710123, China 2 Material Management and Safety Engineering College, Air Force Engineering  University, Xi’an, Shaanxi, 710051, China a ganxusheng123@163.com, b dmhz521@yahoo.com.cn, c gjg123@163.com Keywords: PDF417 barcode; Automatic identification; Aviation spare parts; Aviation management; Data storage Abstract.
At present, in China's civil aviation, the information identification and input in aviation spare parts management still rely on visual identification for aviation spare parts sign characters.
It can be an effective solution to avoid the error-prone and low efficiency of manual input for aviation spare parts supply and management of civil aviation department, and has far-reaching significance to improve the aviation spare parts supply and management ability of civil aviation department.
If the technology is used and promoted in all production factories and depots of aviation spare parts, the work of aviation spare parts support and management of China's civil aviation can improved to a new level.
Journal of Ordnance Engineering College, 14(2), (2002), 25-29 [6] MIL–STD–1189B, Standard department of defense bar code symbology.

Design of Underground Engineering Analogy Based on Fuzzy Comprehensive Evaluation Model LEI Jinshenga, JIN Zhengtaob, BAO Leic and WEN Liangd College of Civil Engineering & Architecture, China Three Gorges University, Yichang,China alei-jinsheng@163.com, bjk350044387@yahoo.cn, c460357749@qq.com, d657056652@qq.com Keywords: fuzzy comprehensive evaluation method; underground engineering; engineering analogy method; classification of surrounding rock; support parameters Abstract.
In the design of underground engineering analogy, the division of rock mass level and the selection of support parameters are affected by many uncertain factors which share characteristics of random and obscurity.
Introduction The design of the underground supporting structure engineering analogy is the general steps: collection of engineering geological data, according to some kind of surrounding rock classification system to classify engineering rock mass, according to classification results based on past experience (direct analogy) or specification table (indirect analogy) to find out the type of supporting structure and parameters, as an initial design parameters[1,2].
In underground engineering the initial data and the surrounding rock mass classification have certain fuzziness, in underground engineering analogy design, fuzzy comprehensive evaluation model for the division of the surrounding rock level and support parameters selection will be reasonable, close to the actual effect.
References: [1]Yicai Wang, Tunnel Engineering, People's Communications Press, Beijing, 2006.

Research on the Technical and Economic Evaluation Model of Energy-saving Buildings Qiankun Wang1, a, Qian Huang2, b 1, 2 School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, Hubei, 430070, China a wangqk@mail.whut.edu.cn, bonlinehqq@163.com Keywords: Technical and Economic Evaluation Model; Energy Saving Rate; Renewable Energy Contribution Rate; Increased Capital Ratio; Payback Period of Investment Abstract.
ER shows technical evaluation of energy-saving palisade structure system, and energy saving rate has national standard which is an important factor to the designer; CR is to show technology of the use of new energy; IR is the add capital relative to the civil part of the investment due to we use new material, new energy and equipment; P reflects the speed of the investment recovery.
This part will be transformed into the increased cost rate related to civil engineering cost, so it can reflect the discretion of the amount after we use energy-saving technologies.
(6) there, : Add cost caused by energy-saving palisade structure system, Yuan; : Add cost caused by renewable energy system, Yuan; : Proposed building area, m2; : Proposed building civil cost, Yuan/ m2.
This model could be used in design phase and is help to let owner and designer learn the technical and economic index of energy-saving building in advance, apply energy saving construction scheme for the proposed revision, provide the basis for the optimization and avoid the waste of time, money and human in engineering construction.

Research of construction subcontracting enterprise competence based on GA-BP neural network YAN Xi-kang1,2,a , WANG Jing-yu1,b 1 College of Civil Engineering, Hebei University of Technology, Tianjin 300401, P.
China 2 Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, P.
CHINA CIVIL ENGINEERING JOURNAL.7 (2011) 157-164.
CHINA CIVIL ENGINEERING JOURNAL. 7, (2007) 93-98.

Influence of Oxygen Plasma Surface Treatment of PET Micro Fibers on Flexural Strength of Reinforced Cement Pastes TREJBAL Jan1,2,a∗, BARTOŠ Jan1,2,b, KOPECKÝ Lubomír1,2,c, RYPAROVÁ Pavla1,d and POTOCKÝ Štěpán3,e 1Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague, Czech Republic 2UCEEB, Czech Technical University in Prague, Třinecká 1024, 273 43 Buštěhrad, Czech Republic 3Institute of Physics, AS CR, v.v.i., Cukrovarnická 10, 162 00 Prague, Czech Republic ajan.trejbal@fsv.cvut.cz, bjan.bartos@fsv.cvut.cz, clubomir.kopecky@fsv.cvut.cz, dpavla.ryparova@fsv.cvut.cz, epotocky@fzu.cz Keywords: Cement Paste; PET Micro Fiber Reinforcement; Four-Point Bending Test.
The authors also thank the Center for Nanotechnology in Civil Engineering at the Faculty of Civil Engineering CTU in Prague and the Joint Laboratory of Polymer Nanofiber Technologies of the Institute of Physics Academy of Science of the Czech Republic and the Faculty of Civil Engineering CTU in Prague.

Numerical Modeling of the Constitutive Relationship of a Soft Rock Using a 3-D Elastic Visco-Plastic Model * Su Lijun1 , Liao Hongjian2 and Yin Jianhua1 1 Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China 2 Department of Civil Engineering, Xi’an Jiaotong University,Shaanxi, China Keywords: soft rock, constitutive relationship, equivalent time, strain softening, consolidated undrained triaxial test, time-dependent ABSTRACT In this paper, a diatomaceous soft rock is studied.
It is often encountered in civil engineering constructions.
Many engineering disasters of hydraulic structures worldwide were caused by existing of soft rock stratum [1].
More and more civil structures are constructed on soft rock, so it is essential to study the mechanical behavior of soft rock.

Research on Modal Analysis of Aero-engine Key Parts Structure Damage Huang Yanxiao 1,a* , Li Shuming2,b and Zhang Ying3,c 1Vocation Technology College, Civil Aviation University of China, Tianjin, 300300, China 2Aeronautical Engineering College, Civil Aviation University of China, Tianjin, 300300, China 3Aeronautical Engineering College, Civil Aviation University of China, Tianjin, 300300, China aoldsea0592@163.com (corresponding author), bsmli5806@163.com, cy_zhang@cauc.edu.cn Keywords: aero-engine; structure parts; structure damage; modal analysis Abstract.
Acknowledgements This work is supported by the major safety production accident prevention key science and technology project in 2015 (Research on Aircraft Engine Safe Operation Monitoring Technology Based on big data (Project No. tianjin-0001-2015AQ)) and the Fundamental Research Funds for the Central Universities (Civil Aviation University of China, Project No.3122014C005).
Mechanical Engineering & Automation, 2014, (3):P122-124 [3] Yang Hui, Zhang Jin, Nie jingxu, Hou Guicang.
Computer Methods in Applied Mechanics and Engineering, 2008, 197(50) : 4830- 4839

Elasticity of Calcium Silicate Brick Masonry Wall due to Sulphate Attack WAN Ibrahim M H 1,a, ABU BAKAR B H 2,b, MEGAT Johari M A3,c and RAMADHANSYAH P J4,d 1 Faculty of Civil & Enviromental Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor, Malaysia 2, 3, 4 School of Civil Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang, Malaysia a haziman@uthm.edu.my, b cebad@eng.usm.my, ccemamj@eng.usm.my, drama07d@yahoo.com Abstract The aim of this study is to investigate the behaviour of the calcium silicate brick masonry wall exposed to sulphate condition.
The test was carried out in Heavy Structures Laboratory, School of Civil Engineering, University Sains Malaysia.
Journal of Materials in Civil Engineering,20, 63-70

Effect of Different C3A Content on Rheological Parameters in Paste Mixtures Kemal Karakuzu1,a, Veysel Kobya1,b, Ali Mardani1,c* Burak Felekoğlu2,d, Kambiz Ramyar3,e 1Department of Civil Engineering, Bursa Uludag University, 16059, Bursa, Turkey 2Department of Civil Engineering, Dokuz Eylül University, 35390, Izmir, Turkey 3Department of Civil Engineering, Ege University, 35040, Izmir, Turkey akarakuzu.kemal@gmail.com, bv.kobya@gmail.com, *cali.mardani16@gmail.com dburak.felekoglu@deu.edu.tr, ekambiz.ramyar@gmail.com Keywords: PCE, rheology, viscosity, C3A, compatibility Abstract.
Ramyar, Effect of cement C3A content on properties of cementitious systems containing high-range water-reducing admixture, Journal of Materials in Civil Engineering. 29 (2017) 04017066 [3] A.