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The Analysis of Heat Recovery Efficiency and Influencing Factors in Air System Chuang Wang1,a, Rui Li1,b 1Beijing University of Civil Engineering and Architecture, 1 Zhanlanguan Road, Xicheng District, Beijing 100044, China achuangw2012@126.com, blirui@bucea.edu.cn Keywords: saving energy; heat recovery; influencing factors; air system Abstract.
It is essential to combined with the actual engineering situation and the local weather conditions in analysis.
Acknowledgements This work was financially supported by National Specialty Construction Project (Building environment and facilities engineering), and supported by Beijing Municipality Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering.

Research on Tempering Process of LZ20Mn2 Seamless Pipe for Axle Zhong-guo HUANG 1, 3, a , Hong-lei DONG1, b, Qing-hua YUAN 2, c , Jian Song 3, Jia Fan 3 1 School of Civil and Environment Engineering，University of Science and Technology Beijing, Beijing 100083, China 2 School of Material Science and Engineering, University of Science and Technology Beijing，Beijing 100083, China 3 Beijing Xinxing Heavy Machine International Co.
HUANG: Material for Mechanical Engineering, 2005, 29(9):8-11
[10] Rodrigues P C M, Pereloma E V, Santos D B: Materials Science and Engineering, 2000, 283A: 136-143

Bond Properties of Ceramic Concrete Reinforced by Bamboo Bar Jian Zhou1,a, Haining Liu1,b*, Su Ma 1,c, Jingjing Li1,d and Hetao Hou1,e 1 Department School of Civil Engineering, Shandong University, Jinan , Shandong,250061,China axiaobin_00@126.com, b*Corresponding Author:785208361@qq.com, cmasuhappy@163.com ddreamjing3@163.com,ehouhetao@sdu.edu.cn Keywords: bamboo bar, ceramic concrete, pull-out test, bond property, embedded length.
(in Chinese) [2] Li Yushun, Shen Huangying, Zhang Yuli, Han Tianshi,“Experimental study on Bamboo-steel composite wall’s seismic behavior experimental study”, Engineering Mechanics, Vol. 27, issue 1, 108-126, 2010.
(in Chinese) [3] Trujillo, D,“ Bamboo Structures in Colombia”, The Structural Engineer, Vol. 85, issue 6, 26-30, 2007
[6] Zheng Qiaowen, Xue Weichen,“Bond-slip constitutive relationship of the sand deformed GFRP reinforcing bars”, Engineering Mechanics, Vol. 25, issue 9, 162-169, 2008.

Elliptical Gears Parametric Design and Motion Simulation Chibing HU 1,a , Fangyong TIAN 2,b , Yancang JIANG 3,c 1 Key laboratory of digital manufacturing technology and application, Lanzhou university of technology, China 2 College of electrical engineering, Lanzhou university of technology, China 3 Department of architecture and civil Engineering, Puyang vocational and technical college, China a hucb0405@sohu.com, b tianfangyong@163.com , cpyjgjyc@163.com Keywords: Non-circular gear, Elliptical gear, Parametric design, Motion simulation Abstract.
Su: Elliptical Gear Tooth Geometry Calculation and Simulation, Journal of Modern Manufacturing Engineering, (2008) No.12, pp.54-57 (In Chinese)
Ge: Solid Modeling Method of Non-circular Gear in SolidWorks, Journal of Engineering Graphics, (2009) No.4, pp.189-192 (In Chinese).

Application of Slope Safety Automatic Monitoring Technology in the Project of Road No.1 in Republic of Congo Pan Yang1, a, Shudong Zhang2, Junmei Guo2, Chengxuan Ma2 Youcheng Shen3 and Jun Yang1 1 Department of Civil Engineering, Tsinghua University, Haidian District, Beijing 100084, China; 2China State Construction Engineering Corporation Limited, Beijing 100037, China; 3 CCCC Second Highway Consultants Co.
Additionally, most of the high slopes are relatively distant from cities, so it becomes inconvenient for engineers to do the measurement in the field.
Here we use finite element analysis software for geotechnical engineering Plaxis2D to calculate slope safety.

Ganesan1a*, P.S.Joanna2b, A.Rajaraman2c and Dalbir Singh1d 1School of Aeronautical sciences, Hindustan University, Chennai, India. 2 Department of Civil Engineering, Hindustan University, Chennai, India.
Introduction Fibre Reinforced Composites have emerged as strong contenders for load bearing structures giving a tough competition to the conventional materials such as aluminium alloys and steels in numerous engineering sectors such as aerospace, construction, transportation, off-shore structures and others.
Reis, Effects of Strain Rate and Temperature on the Mechanical Properties of Gfrp Composites, Engenharia Térmica (Thermal Engineering). 10 (2011) 03-06
Li, Analysis of strain rate sensitivity of carbon/epoxy woven composites, International Journal of Impact Engineering. 48 (2012) 54-64

Gabdullin2,c 1Moscow State University of Civil Engineering, 26, Yaroslavskoe shosse, Moscow, 129337, Russia 2Kazan State University of Architecture and Engineering, 1, Zelenay street, Kazan, 420043, Russia aptdm_zavkaf@mail.ru, bjkharlamov@yandex.ru, cTalgat2204@mail.ru Keywords: separator, ore, efficiency, recovery factor, fine powder, asphalt concrete, concrete Abstract.
Yadykina, On environmental friendliness increase for metallurgical production, International Journal of Applied Engineering Research. 10 (2015) 45108-45114
Series: Materials Science and Engineering. 324 (2018) 012052.

Environmental Protection in the Port Construction and Operation in China Yanmei YANG1, a, Xuesong SUN1, b, Jun ZHAO1, c, Jiao SUN2, d, Qingwei YANG1,* 1School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, P.R.China 2School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing, P.R.China acqyymei@126.com, bagrasslandswolf@163.com, c247783753@qq.com, d287544750@qq.com *qwyang2001@sina.com * Corresponding author (Qingwei Yang).
In the water transportation，the Ministry of Communication issued the "environment impact assessment standard of port" in 1994, then established "design code for port's environmental protection " compiled by Second Harbor Engineering Investigation and Design Institute(SHEIDI).Port construction unit implemented and executed the environment impact assessment system and"3 same times" system, and controled the new pollution sources and the destruction of the impact on the environment effectively, meanwhile, created a traffic environmental protection team with thousands of people.
Chen: Port & Waterway Engineering Vol. 419 (2008), p. 71-74.

Failure Modes-Based Multi-objective Optimization Design of Steel Reinforced Concrete Frame Structures Shansuo ZHENGa , Zhiqiang LI b , Bin WANG c, Lei LId , and Wei WANG e School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China a zhengshansuo@263.net; b zhiqiangli2023@163.com; cwangbin1853@163.com; d lilei1004@163.comm; e wangweiwei1881@126.com Keywords: frame structure; steel reinforced concrete; failure modes; multi-objective optimization Abstract: The frame structure designed with the existing design code in zones of high earthquake intensity doesn't satisfy with the expectation of strong column-weak beam.
-K: J. of Earthquake Engineer and Structural Dynamics.
E., Gong, Y. and Xu, L: J. of Numeracal Methods Engineer.
Grierson: J. of Structure Engineer.

Stability Analysis of Slope under the Condition of Rainfall Infiltration Guo Xiang1, a, Chengliang Wang1, b, Mingzhou Bai1,c Zhaoyi Xu1, d, and Junjun Yan2,e 1 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044 2 CCCC RAILWAY SURVEY & DESIGN INSTITUTE CO.
(2) Three-Dimensional Model Size: According to field engineering surveying and mapping, the length (axis X) of the landslide model is 750m, height (axis Y) 300m, and width (axis Z) 200m
References [1] LIU Junxin,LIU Yutian,HU Qi Jun.Stability of embankment slope subjected to rainfall infiltration considering both runoff-underground seepage and fluid-solid coupling[J].Rock and Soil Mechanics,2010,31(3):903-910. ( In Chinese) [2] ZHOU Jiawen,XU Weiya,DENG Jun ye,et a1.Analysis of slope stability under intensive rainfall[J].Journal of Hydraulic Engineering,2008,39(9):1066-1073. ( In Chinese) [3] WU Changfu,ZHU Xian grong,YIN Xiaotao,et a1.Analysis of soil slope transient stability under intensive rainfall[J].Rock and Soil Mechanics,2008,29(2):386- 391. ( In Chinese) [4] QI Guoqing,HUANG Runqiu,SU Baoyu,et a1.Numeric simulation on rainfall infiltration on rock slope[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(4):625-629. ( In Chinese) [5] ZHOU Guiyun,LI Tongchun.The rock slope stability analysis under saturated-unsaturated seepage[J].Water Resources and Power,2006,24(5):79-82. ( In Chinese)