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Seismic Behavior Test of Recycled RC Frame Column with Different Axial Compression Ratios Jinsong Fan1,a,*, An Zhou1,b, Lihua Chen1, Bingkang Liu1 1School of Civil Engineering, Hefei University of Technology, Hefei 230009, China afanjinsong163@163.com, bzhouangh@163.com Keywords: Recycled aggregate concrete (RAC), Recycled concrete column, Pseudo static test, Axial compression ratio, Hysteretic behavior, Dissipation capacity Abstract.
Recycled concrete is a kind of new construction materials, and now received more and more attention from researchers and engineers, since its application in engineering projects can well cater to the increasing requirements of development for economic and environment-friendly society.
Although some experiment results concerning the difference between normal aggregate from size-classified coarse limestone and recycled aggregate from crushed concrete waste showed the latter had lower stiffness, smaller compressive strengths and more complex failure mode or mechanism in the fracture zone, recycled aggregate concrete is still worth while to be studied for its wider application potentials due to some obvious benefits on the resource conservation, environment-friendly construction and development of new engineering materials.
The application of recycled aggregate concrete in structure engineering is still very much on the pilot phase and needs more intensive research on different forms of structure systems.
Falkner, “Seismic performance of frame structures with recycled aggregate concrete,” Engineering Structures, vol. 28, 2006, 1–8

Effect of Refrigerant Charge & Inlet Air Temperature on One A/C System Chengjun Pan 1,a, Yida Tang 1,b College of Architecture and Civil Engineering, Southwest University of Science and Technology, Mianyang, 621010, China aPanchengjunj@126.com,btyddyx@126.com Keywords: Two-phase flow; A/C System; Performance Abstract.
Kargilis, Design and development of automotive air conditioning systems, ALKAR Engineering Company, 2003
Brown, An experimental analysis of cycling in an automotive air conditioning system, Applied Thermal Engineering 20 (2000) 1039–1058
Euakit, Performance analyses of an automotive air conditioning system with R22/R124/R152A refrigerant, Applied Thermal Engineering 17 (11) (1997) 1085–1097
Cotton, multi-channel R134a two-phase flow measurement technique for automobile air conditioning system, 4th ASME/FED & JSME Fluids Engineering Division Summer Meeting, Honolulu, Hawii, USA, July 6–10, 2003

The results may have engineering significance to missile airfoil structural design and manufacturing.
Compared with other reliability analysis methods, the fourth moment method don't need to get the failure performance function values in design points, and call function less frequently, that is why the fourth moment method is suit- able for reliability analysis of engineering structure with fewer variables [6,7].
Fatigue Analysis for Civil Aircraft Wing Skin Butt Joint in Serving Environment, J.
Journal of Mechanical engineering,2003(supplement) 121-123
Chinese Journal of Mechanical Engineering, 40(2004) 100-105 [6] Huang Qizhen,Missile Structure Material Strength.

Study on the mechanics state of concrete under penetration and the deceleration of projectile Tao Deng1, a , Tao Ge 2,b 1Institute of Mapping and Surveying,PLA Information and Engineer University,Zhengzhou, 450000,China 2 Troop 94600, Zhengzhou, 450046, China adeng8566t@126.com, bgetaoge@163.com Keywords: explosion mechanics; penetration, perforation; concrete, deceleration, intrinsic friction Abstract.
Chinese Journal of Rock Mechanics and Engineering Vol.24 No.16:pp:2859-2863.(2005) (in Chinese)
Study on characteristic of Over load for penetration into concrete [C]//Protective Building Engineering Society of China Civil Engineering Society.
Protective Engineering Vol.28 No. 1: pp:6- 10. (2006) (in Chinese) [8] WANG Ming-yang, ZHENG Da-liang, QIAN Qi-hu.

Numerical Simulation of Natural Cavitating Flow over Axisymmetric Bodies Qiankun Liu1, a and Ye Gao2, b 1, 2College of Aerospace and Civil Engineering, Harbin Engineering University Harbin, Heilongjiang, China aliuqiankun_heu@163.com, bgaoye66@126.com Keywords: Natural cavitating flow, Multiphase mixture model, Numerical simulation, Axisymmetric body Abstract.
Jiang: Journal of Fluids Engineering, Vol. 124 (2002), p. 616-624
Spalding: Computer Methods in Applied Mechanics and Engineering, Vol. 3 (1974), p. 269-289
McNown: Studies in Engineering, Bulletin 32, State University of Iowa, (1948)

Research on Damage Status of the Reinforced Concrete Ground Floor Columns Lijun Gao1, a, Yongsheng Zhang2, b, Qin Li3, c 1,2,3College of Architecture and Civil Engineering of Taiyuan University of Technology ,Taiyuan 030024,China; aetvr098@126.com,bZhangys868@163.com,c969723410@qq.com Keywords: Dynamic measurement method, the Bottom reinforced concrete column, First order frequency.
The bottom of the reinforced concrete column damage is calculated through comparison between theoretical value and first order frequency value by deducing dynamic measurement method in practical engineering.
Therefore, reduce the frequency according to the boundary conditions between the both; then, combined with practical engineering experience, the bottom boundary condition of ground floor columns is stronger than the top.
Adopt artificial field vibration and Dasp engineering software systems of Oriental vibration to test the dynamic characteristics of column.
Hu: Structural Engineer, Vol. 27 (2011), p.300.

Timing Analysis on Rock-bolted Crane Beam of the Underground Power House ofJinping II Hydropower Station Jie Li 1, a, SuchaoXu2,bandChangyu Jin 3,c 1Computing Centre,Northeastern University, Shenyang, Liaoning 110819, P.R.China 2 School of architecture and Civil Engineering, Shenyang University, Shenyang, Liaoning 110044,P.R.China 3Research Center for Safe Deep Mining,Northeastern University, Shenyang, Liaoning 110819, P.R.China alijie@cc.neu.edu.cn, bscxu@whrsm.ac.cn, cjinchangyu@mail.neu.edu.cn Keywords:opportunity analysis;rock-bolted crane beam;FLAC;RDM Abstract.According to design requirements, to reduce the construction difficulty for crane beam on rock wall in underground main power house of JinpingII hydropower, and to condense construction time limit for a main building, theconcreting time for crane beam on rock wall is needed to be specially analyzed.
The model defines whether rock is into damage zone by measuring the plastic equivalent strain.If the rock has been into damage zone its elastic modulus, cohesion and internal friction angle are residual strength of the damaged rock respectively and if the rock has not been into damage zone its parameters are dynamically adjusted by using of piecewise linear function (seen in Figure 1).The numerical calculation program was compiled by using of C++ and the USERMODEL.DLL was formatted by using of interface program [2] of geotechnical engineering software FLAC3D, which made the numerical simulation and calculation of RDM model come true and made it have a good generality and popularization.
In the engineering example, it is can considered in the relaxation effect of the surface rock body through decreasing the elastic modulus, cohesion of surface surrounding rock body and increasing the internal friction angle of the damaged rock which can dynamically adjust the damage of surface rock near the rock-bolted crane beam in the consequent excavation stages and can reasonably calculate the increased stress of rock beam led by inhomogeneous relaxation of the surface rock. 2.
Chinese Journal of Rock Mechanics and Engineering.27(1) (2008), p.144-152
Chinese Journal of Rock Mechanics Engineering 23(9) (2004), p 1542-1550.

Numerical Analysis of Ring Beam Effect on the Modal of LNG Storage Tank Geng Chen 1, a, Jia Qu 1,b and Chunyu Tian 2,c 1College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150000, China 2Daqing Oilfield Technology Supervision Center, Daqing, Heilongjiang, 163453 China achengeng@hrbeu.edu.cn, bqujia@hrbeu.edu.cn, ctianchunyu@139.com Keywords: Modal analysis, LNG storage tank, Natural frequency, Dynamic response.
Introduction Natural gas has high calorific value, low pollution, low price and other kinds of advantages, which has gained more and more attention by many engineers and workers as clear fuel.
Modal Analysis Overview Model analysis technology began in 1930s, and over continuous development and improvement, the vibration modal analysis has become an important branch of engineering.
Science Technology and Engineering.

Analysis for The 3-dimensinonal Time history Response of a Base-isolated Building Structure Jinxia Kang College of Architecture and Civil Engineering Taiyuan University of Technology, Taiyuan, Shanxi 030024, China kevinkjx@126.com Keywords: Base-isolation, Time history analysis, Story shear, Laminated rubber bearing Abstract.
Mitigating damage caused by earthquake is one of the most concerned issues of structural engineering[1].
Zarif: Journal of Sound and Vibration 311 (2008) P.1141–1160 [2]Hongnan Li: Engineering Mechanics.
Jangid: Engineering Structures 29 (2007) P. 2503–2513 [4] Franco Braga a, Michelangelo Laterza: Engineering Structures 26 (2004) P.1599–1610 [5] Jiwu Guo: Seismic design of building. ( cabp, 2010 Beijing)(in Chinese) [6]Code for seismic design of building. ( cabp, 2010 Beijing) [7]Load code for the design of building structures. ( cabp, 2010 Beijing)

The Study on Mechanical Properties and Microstructure of Cement Paste with Nano-TiO2 Feng Lichaoa,b, Gong Chunweic, Wu Yunpengc, Feng Dechengc, Xie Ningc,d* aSchool of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China bJiangsu Province R&D Institute of Marine Resources, Lianyungang 222001, China cSchool of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150001, China dSchool of civil Engineering, Harbin Institute of Technology, Harbin 150001, China * Corresponding author.
Introduction From the 20th century, concrete has been widely used in engineering construction including buildings, bridges, highways, and water conservancy projects etc.
Composites Part B: Engineering, 2004, 35(2): 185-189