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Rationalization of structural stiffness of offshore platform with rocking-wall Guyue Han1,a, Zhiwei Jiang2,b,Liwu Nie1,c, Jigang Zhang2,d 1Liaoning Technical College of Construction, Liaoyang, 111000, China 2School of Civil Engineering, Qingdao Technological University, Qingdao, 266033, China ahgyhit2008@163.com,bjayzw1@163.com, cnieliwu2008@163.com, dzhangjigang_hit@163.com Keywords: Offshore platform; rocking wall; rigidity; seismic behavior; new-typed structure Abstract.
Journal of Tongji University (Natural Science) Vol. 39-7 (2011), p.942-948 [2] ZHOU Ying, Lu Xilin: Journal of Building of Structures Vol. 32-9 (2011), p.1-10 [3] CAO Hai-yun, PAN Peng, etc.: Journal of Architecture and Civil Engineering, Vol. 28-1(2011), p.64-69 [4] QU Zhe, WADA Akira, YE Lie ping: Journal of Building of Structures Vol.32-9 (2011), p.11-19 [5] QU Zhe, YE Lie ping: JOURNAL OF EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION Vol. 31-4(2011), p.40-50 [6] Zhang Jigang,Zhuo Huanwen, Jiang Zhiwei: China Civil Engineering Journal, Vol.45-sup2 2012, p.151-155 [7] A.A.Golafshani, A.Gholizad: Journal of Constructional Steel Research, Vol. 65(2009), p.180-187

SEI/ASCE 7-05 minimum design loads for buildings and other structures Washington DC: American Society of Civil Engineers. 2005
China Civil Engineering Journal, 2008, 41(6): 1-8
China Civil Engineering Journal. 2009, 42(4): 48-54
Engineering Structures 23(2001):1383-1409
China Civil Engineering Journal. 2007, 40(9): 23-35

Acknowledgements This research was part of research project 2011 supported by the Structure and Materials Laboratory Department of Civil Engineering, Universitas Indonesia.
Apeagyei: Rutting as a function of dynamic modulus and gradation, Materials in Civil Engineering, ASCE Vol. 23(9) (2011), p.1302-1310
Amirkhanian: Rutting resistance of rubberized asphalt concrete pavements containing reclaimed asphalt pavement mixtures, Materials in Civil Engineering Vol. 19(6) (2007), p.475-483
Srinivasan: Evaluation of indirect tensile strength to identify asphalt concrete rutting potential, Asphalt Technology Program, Department of Civil and Environmental Engineering, West Virginia Univ., W.Va. (2004)
Transportation Engineering ASCE Vol. 130(4) (2004), p.486-494.

Uddin: Developments in Fiber-Reinforced Polymer (FRP) Composites for Civil Engineering (Woodhead Publishing Limited, United Kingdom 2013)
Ahmad, Proceeding of 3rd International Conference on Advances in Civil Engineering, Bangladesh (2016), p. 327
Chaudhary: New Materials in Civil Engineering (Butterworth-Heinemann, United Kingdom 2020)
Sohn: Sensor Technologies for Civil Infrastructures (Woodhead Publishing Limited, United Kingdom 2014)
Roberge: Handbook of Corrosion Engineering (McGraw-Hill, U.S.A. 2019)

Influence of Stirrup Corrosion on Shear Strength of RC Beams XIN XUE1, a, SEKI HIROSHI2,b and YU SONG3,c 1School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, P.R.
China 2Department of Civil and Environmental Engineering, School of creative Science and Engineering, Waseda University, Japan 3School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, P.R.
References [1] JSCE (Japan Society of Civil Engineers) , Structural performance of concrete structure with deteriorated materials, Concrete Technology Series, No.71.
Japan Society of Civil Engineers, Tokyo, 2006
Journal of Zhejiang University ( Engineering Science) , 42:1 (2008) 19-24

Effect of Alkaline Environment on Mechanical Properties of Molded Composite Reinforcement LAGIŇ Juraj1,a*, GIRGLE František2,b, KOSTIHA Vojtěch3,c, ROZSYPALOVÁ Iva4 and Petr Štěpánek5 1,2,3,5Brno University of Technology, Faculty of Civil Engineering, Institute of Concrete and Masonry Structures 4Brno University of Technology, Faculty of Civil Engineering, Institute of Building Testing alagin.j@fce.vutbr.cz, bgirgle.f@fce.vutbr.cz, ckostiha.v@fce.vutbr.cz, drozsypalova.i@fce.vutbr.cz, estepanek.p@fce.vutbr.cz Keywords: Composite Reinforcement, Bending, Bent Composite Reinforcement, Degradation, Alkali Abstract.
Japan: Research Committee on Continuous Fiber Reinforcing Materials, Japan Society of Civil Engineers; 1997
Second Research Committee on CFRM, Japan Society of Civil Engineers: Concrete Engineering Series, 1993, 3
Journal of Materials in Civil Engineering. 2020, 32(7), 1-12.
Key Engineering Materials. 2018, 760(1), 213-218.

Calculation of Bending Stiffness and its First Derivatives Related to Optimization of a Steel-reinforced Concrete Cross Section VENCLOVSKÝ Jakub1, a * and ŠTĚPÁNEK Petr1, b 1 Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republic avenclovsky.j@fce.vutbr.cz, bstepanek.p@fce.vutbr.cz Keywords: optimization, bending stiffness, moments of polygonal area.
Introduction Various principles of mathematical optimization have been applied extensively in civil engineering in order to increase the effectiveness of structural design ([1, 2]).
LO1408 “AdMaS UP - Advanced Materials, Structures and Technologies,” supported by the Ministry of Education, Youth and Sports under “National Sustainability Program I” and the project FAST-J-15-2846 “Design optimization of concrete structures” supported by Brno University of Technology, Faculty of Civil Engineering.
Ghareibeh, Reliability-based life-cycle management of highway bridges, in: Journal of Computing in Civil Engineering, 2001, vol. 15, is. 1, pp. 27-34
Plšek, Design optimization of concrete structures, Ph.D. dissertation, Brno University of Technology, Faculty of Civil Engineering, Brno 2011

Stream flows are widely spread in various spheres of science and engineering.
Thus, modern approach in complex solving of thermophysics, heating and ventilation problems in civil construction sphere is being implemented (V.
Modeling heat and humidity conditions at designing of buildings (2013) Bulletin of Civil Engineers, 3(38), pp. 117–121
To the issue of convergence at numerical modeling of the heat and air exchange in a ventilated premise (2013) Bulletin of Civil Engineers, 1(36), pp. 126–130
Ventiliatciia i otoplenie sudostroitelnykh proizvodstv [Ventilation and heating of shipbuilding yards] (2013) Civil Engineering Journal, 6 (41), pp. 7–11.

Numerical Simulation of Progressive Collapse and Study of Resisting Progressive Collapse of Spatial Grid Structures Based on ANSYS/LS-DYNA Youliang Fang a, Zhenzong Zhaob College of Civil Engineering and architecture, Hebei University, Baoding, Hebei, 071000, China afang_youliang@126.com, bzhaozz8686@163.com Key words: Spatial Grid Structure, Numerical Simulation, Resist Progressive Collapse, Divisional Design Method.
The divisional design method can improve resistance to progressive collapse obviously and is of certain reference value for engineering.
Consequently, it has been used in gymnasium, exhibition and civil engineering structure.
As more and more progressive collapse accidents happened, progressive collapse of large-span space structure attracts more and more attention in engineering field and be researched constantly.
In the engineering, progressive collapse of spatial grid structure is caused by bar bucking. 2.4 Control of progressive and the divisional design Abnormal load is unknown, uncontrollable and instantaneous.

Analytic Solution of Inverse Regression Equation for Evaluating Concrete Strength of Building Materials: Experimental and Application Jianwei Chen1, a, Youpo Su1,b and Haibin Chen1,c 1 College of Civil and Architectural Engineering, Hebei United University, Tangshan 063009, China aheuu2010@163.com, bsuyoupo@126.com, cchb1973@163.com Keywords: Analytic solutions, Concrete strength, Building materials, Non-destructive test.
Furthermore, two engineering examples are given, satisfactory results are obtained using the analysis method.
Introduction For a long time，concrete, as one of the main structure materials for modern civil engineering, are widely used in the construction engineering.
Nondestructive method and blocks with the same condition are common methods for the structural concrete strength in the actual engineering.
Two engineering examples are presented, satisfactory results, on the other hand, are obtained using the analysis method, in the last parts.