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Research on Restoring Force Model of High Strength Concrete-Filled Steel Tubular Columns Kai-Ze Ma a Department of Civil Engineering., Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, China atopmkz@126.com Keywords: high strength concrete-filled rectangular steel tubular columns, restoring force model, axial load ratios, confinement effect coefficient, slenderness ratio.
Journal of Structural Engineering (ASCE), 13:2,169-179
Earthquake Engineering and Engineering Vibration, 20:4, 56-65.
Earthquake Engineering and Engineering Vibration, 25:5, 95-103.
Earthquake Engineering and Engineering Vibration, 27:1, 99-103.

Li:Materials Science and Engineering A, vol.380, (2004),p.378
Khoei:Transaction A:Civil Engineering, Vol.17(5),(2010),p.372-385
Genel and S.Eksi:Engineering Failure Analysis.
Billaudeau: Engineering Fracture Mechanics, Vol.73,(2006),p.112-133
Su: 2011 SREE Conference on Engineering Modelling and Simulation (CEMS 2011), p.35–40

Study on Service Life of OPC and HPC in Marine Environment Chen Haoyu1,a 1Tianjin Port Engineering Institute of CCCC First Harbour Engineering Company Ltd Tianjin 300222 China achenhaoyu2006@163.com Keywords: Bonder ability, Diffusion coefficient, Time-dependent parameter, Chloride ion concentration of surface, Degradation effect coefficient, Service life Abstract.
Introduction In the 21st century, concrete is the most primary structure material in basic engineering construction.
There is a long coastline in southeast of China, most of the basic engineering construction is concentrated there many concrete structure serviced no more than 20 years.
Diffusion theory of Cl- in concrete has very important theoretical value and practical significance to extend the service lives of civil engineering structures.
[3] Corrosion Prevention Technical Specification for Concrete Structures of Marine Harbour engineering (JTJ275-2000).

Application of computational fluid dynamics (CFD) used in simulation of flow distribution for air condition ZHANG Zheng , WANG Jin-feng , XIE Jing , TANG Yi aemail: 522017934@qq.com, bemail: jfwang@shou.edu.cn, cemail: jxie@shou.edu.cn (College of Food Science and Technology, Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai Ocean University, Shanghai 201306, China) Keywords:Air condition; Energy-saving; Comfort; CFD; Numerical Simulation Abstract.
The generation of CFD can be traced back to the early 1930s, along with many engineering numerical computing technology, computer technology, and now is widely used in thermal power, machinery, aerospace, civil engineering, water conservancy, environmental chemicals, HVAC and air purification field.
References [1] Wu D M, Gao L, Practical Computational Fluid Dynamics Foundation [J] Harbin : Harbin Engineering University Press, 2008
Applied Thermal Engineering, 2008, 28 (14–15): 1853-1864
Applied Thermal Engineering, 2006, 26 (14–15): 1737-1745

Journal of Management in Engineering, 14(2008), pp. 67-76
Journal of Construction Engineering and Management, 132 (2008) p. 871-881
Omuh, Competitive Strategies of Indigenous Construction Firms, International Journal of Civil Engineering and Technology, 8(10), 2017, pp. 350–362 [8] F.Y.Y.
Journal of Construction Engineering and Management, 134 (12), p. 983-990
Journal of Management in Engineering, 29(2), pp. 133-139 [12] S.

The Ljungstrom Air Preheater 1920: An International Historic Mechanical Engineering Landmark
IJRDO – Journal of Mechanical and Civil Engineering, Volume 2, Issue 6, ISSN-2456-1479 [6] Jiang, L. (2021).
Applied Thermal Engineering, 163
International Journal of Applied Research in Mechanical Engineering, 163–170. https://doi.org/10.47893/ijarme. 2012.1030K
International Journal of Advanced Research in Engineering and Applied Sciences. www.garph.co.uk

Experimental Study of Short-term Creep Characteristics Base on Step Loading-Unloading Method for Hard Rock Fu-jun Zhang1 Chuan-xiao Liu2 1Library of Shandong University of Science and Technology, Qingdao ,Shandong 266590 2College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Tai’an Shandong 271018 Keywords: step loading-unloading; isochronous stress-strain curves; Gauss distribution; correlative coefficient; short-term creep experiment Abstract.
Therefore, creep hard rock research became an important and even unevadable topic in aspect of theoretical analysis, experimental proof, engineering design and application process.
References: [1] Jun Sun.Rheology and its application in engineering of rock or soil[M].Beijing:Chinese Architectural Industry Press,1999(in Chinese) [2] Li-jun Zhang, Chuan-xiao Liu.
Creep theory of soft rock and its engineering application[J].Chinese Journal of Rock Mechanics and Engineering, 2004,23(10):1635-1639(in Chinese) [5] Hai-ping Yuan, Ping Cao, Wan Wen,et al.Study on creep rules of soft and intricate ore-rock under step load and unload[J].Chinese Journal of Rock Mechanics and Engineering, 2006,25(8):1575-1581(in Chinese) [6] Guang-zhe Deng, Wei-shen Zhu.
Engineering mechanics of soft rock[M].

Thesis, Civil Eng.
Journal of Geotechnical Engineering, ASCE, 111(8) 1985 1008-1019
Tikrit Journal of Engineering Sciences, 23(1) 2016 20-31
Thesis, Water Resource Engineering Department, University of Mosul, Iraq, 2007
Journal of the Geotechnical Engineering Division, ASCE, 109(1) 1983 1-14.

There has been not one program about the 3D methods that can be used widely in the engineering.
Hovland, in: Division Proceedings of the American Society of Civil Engineers, Vol. 103 (1977), p. 971-986
Zhang, in: Journal of Geotechnical Engineering, ASCE, Vol. 114 (1988), p. 658-671
Wang, in: Chinese J. of Geotechnical Engineering, Vol. 23 (2001), p. 524-529.
Deng, in: Chinese J. of Geotechnical Engineering, Vol. 25 (2003), p. 611-614.

Study on effects of sea ice on nonlinear seismic responses of single-column pier subject to different types of earthquakes Fu-qiang Qi1,a, Bo Song1, b 1School of Civil & Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China asafety-star@163.com, bsongbo@ces.ustb.edu.cn Key Words: Sea Ice; Single-column Pier; Earthquake; Nonlinear Seismic Response Abstract: The seismic response analysis model of a single-column pier surrounded by sea ice was established and it analyzed the nonlinear seismic response of the pier subject to different types of earthquakes.
Introduction The ice period can be 3-4 months in Bohai Sea, and the large span bridges, offshore engineering structures are subject to both seasonal frozen and hydrodynamic pressure.
In foreign history, there have been several serious structural damages of offshore engineering subject to ice load and earthquake.
How to design the offshore engineering and guarantee the engineering structures safe operation is still a challenge and problem to engineering professionals.
The Proceedings of the Second International Offshore and Polar Engineering Conference, San Francisco, USA , 1992, 2, 764-771