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Online since: December 2012
Authors: Ling Zhi Sun, Chun An You, Lin Lin Sun, Jian Xin Liu
Energy Efficiency Research in Building Based on the
Concept of Life Cycle
Linlin Sun 1, a, Chun’an You 1,b, Jianxin Liu2,c and Lingzhi Sun1,d
1 Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of science and technology, Qingdao, Shandong, 266510, China
2 College of Information Science and Engineering, SDUST , Qingdao, Shandong, 266510, China
asunlinlin2003@126.com, byouchunan@163.com, csdustljx@163.com, d slz8124@126.com
Keywords: energy efficiency in building, life cycle, estimation model.
Energy saving of buildings is seen as system engineering.
Project cost management should adapt to the requirement of building energy efficiency, the most important is to establish the life cycle cost concept of engineering project and management concept.
Beijing: China University of Geosciences, 2008 [2] China construction engineering cost management association: Theory and practice of construction engineering cost management.
Energy saving of buildings is seen as system engineering.
Project cost management should adapt to the requirement of building energy efficiency, the most important is to establish the life cycle cost concept of engineering project and management concept.
Beijing: China University of Geosciences, 2008 [2] China construction engineering cost management association: Theory and practice of construction engineering cost management.
Online since: February 2015
Authors: Cheng Ren Xiong, Jun Wei Ma, Qi Chen Liu
Engineering Geological Conditions
Landslide area is located in the Beipanjiang river basin.
Liu: Preliminary findings on Dazhai landslide-debris folw disaster in Guizhou province of june 28, 2010[J], Journal of Engineering Geology, Vol. 18 (2010) No.5, p.623~630
China Civil Engineering Journal, Vol. 34 (2001) No.5, p.57-61 [5] Y.
Yang, Investigation of a high speed and long run-out rockslide-debris flow at Dazhai in Guanling of Guizhou province[J], Journal of Engineering Geology, Vol.18 (2010) No.4, p.445~454
Nian: An Alternative Criterion for Evaluating Slope Stability Based on Development of Plastic Zone by Shear Strength Reduction FEM[J], Journal of Disaster Prevention and Mitigation Engineering, Vol. 23 (2003) No.3, p.1~8.
Liu: Preliminary findings on Dazhai landslide-debris folw disaster in Guizhou province of june 28, 2010[J], Journal of Engineering Geology, Vol. 18 (2010) No.5, p.623~630
China Civil Engineering Journal, Vol. 34 (2001) No.5, p.57-61 [5] Y.
Yang, Investigation of a high speed and long run-out rockslide-debris flow at Dazhai in Guanling of Guizhou province[J], Journal of Engineering Geology, Vol.18 (2010) No.4, p.445~454
Nian: An Alternative Criterion for Evaluating Slope Stability Based on Development of Plastic Zone by Shear Strength Reduction FEM[J], Journal of Disaster Prevention and Mitigation Engineering, Vol. 23 (2003) No.3, p.1~8.
Online since: October 2014
Authors: Jian Min Zhang, Zhuo Jia
The Application of High-density Resistivity Method to the Evaluation on the Stability of Gongchangling Open Pit's Slope
Zhuo Jia, Jianmin Zhang
College of Resources and Civil Engineering, Northeastern University, Shenyang 110819 China
Keywords: Resistivity Method; Gongchangling; High Density; Slope Stability
Abstract.
From the perspective of engineering geological analysis, the resistivity of ore body, surrounding rock and empty space is generally greatly different.
The north slope of the area consists of the mixed rock weathered to different degree; there are amphibolites, mica schist, and iron ore body to emerge below 200m of the horizontal line; the engineering geological conditions are complex; fault and joint are developed.
Engineering and Environmental Geophysical Exploration [M].
West-China Exploration Engineering, 2008 (7): 124-126.
From the perspective of engineering geological analysis, the resistivity of ore body, surrounding rock and empty space is generally greatly different.
The north slope of the area consists of the mixed rock weathered to different degree; there are amphibolites, mica schist, and iron ore body to emerge below 200m of the horizontal line; the engineering geological conditions are complex; fault and joint are developed.
Engineering and Environmental Geophysical Exploration [M].
West-China Exploration Engineering, 2008 (7): 124-126.
Online since: January 2013
Authors: Ying Cai Mu
Dynamic Response Analysis
for Space Grid Structure With Different Boundary Conditions
Yingcai Mu
College of Architecture and Civil Engineering ,
Taiyuan University of Technology, Taiyuan 030024, China
tylgmyc@126.com
Keywords: space grid structure; natural vibration; boundary conditions; dynamic response
Abstract: Through the ansys software, we analysised the space truss structures for its dynamic response and observed its formation of frequency diagram .
Establishment of finite element model 1. 1 Model simplification and hypothesis (1) Space truss structure calculation model is assumed for the space hinged frame structure(3), which can approximate the nodes for hinged joints (only axial force ), while ignoring the node stiffness effect. (2) Space truss displacement is far less than the thickness of the frame, accord with small deformation hypothesis; (3) Materials is the isotropic linear elastic ,according to the elastic analysis methods to analyze; (4) According to the external force equivalent principle ,we assume that the external load of the Space truss structure action in the nodes of structure 1. 2 The simplified boundary conditions The boundary condition of the space truss of actual engineering have three kind of circumstance: free end , elastic support and rigid (namely fixed) support .The direction of free end said displacement unconstrained in this direction, some direction of elastic boundary represented in this direction
According to the chart 5 above : (1) whether the boundary conditions, the first frequency of the grid is about 5Hz, namely the basic cycle is about 0.2s, indicating that the structure stiffness is larger and the boundary conditions on the influence of the first order frequency have the very limited impact; no matter how the supporting condition, Order n becomes larger at the same time frequency accordingly.(2) In the same circumstances N, the frequency of fixed support is the largest, simply supported support is the second smallest, and vertical support is minimum, this shows that fixed support casing space truss stiffness is the largest, vertical displacement is minimum under the loads and stability is good, simply supported support is the second smallest, and vertical support stiffness is minimum, so in the actual engineering we must select the support form reasonable .
Conclusion (1) In the same circumstances N, the frequency of fixed support is the largest, simply supported support is the second smallest, and vertical support is minimum, this shows that fixed support casing space truss stiffness is the largest, vertical displacement is minimum under the loads and stability is good, simply supported support is the second smallest, and vertical support stiffness is minimum, so in the actual engineering we must select the support form reasonable
Reference: [1] Liu Tao, master ANSYS, Tsinghua University press, 2002.09 [2] Tu zhenfei, Engineering application examples about ANSYS finite element analysis, China Building Industry Press, 2010.08 [3] Zhang Wenfu, Natural vibration finite element analysis of space truss structure, world earthquake engineering, 2003.12 [4] Zhang Wenfu , Natural vibration analysis of pyramid space grid roof structures ,Journal of Daqing Petroleum Institute, 2004.06 [5] Zhang Wenfu, the validation of equivalent sandwich plate method for double-layer space grids by finite element method , Journal of computational mechanics, 2005.08 [6] Dong Shilin, Xia Pengxi, Analysis of orthogonal and ortho-laid space truss as equivalent(sandwich)plate【J】, Journal of building structures,1982 ( 2, 3) :85-99 [7] Wu Tingting, static and dynamic response analysis of space truss structure, industrial buildings, Vol 40, 2010 [8] Zhang Wenfu, grid structure design, Harbin Institute of Technology press, 199 [9] lan
Establishment of finite element model 1. 1 Model simplification and hypothesis (1) Space truss structure calculation model is assumed for the space hinged frame structure(3), which can approximate the nodes for hinged joints (only axial force ), while ignoring the node stiffness effect. (2) Space truss displacement is far less than the thickness of the frame, accord with small deformation hypothesis; (3) Materials is the isotropic linear elastic ,according to the elastic analysis methods to analyze; (4) According to the external force equivalent principle ,we assume that the external load of the Space truss structure action in the nodes of structure 1. 2 The simplified boundary conditions The boundary condition of the space truss of actual engineering have three kind of circumstance: free end , elastic support and rigid (namely fixed) support .The direction of free end said displacement unconstrained in this direction, some direction of elastic boundary represented in this direction
According to the chart 5 above : (1) whether the boundary conditions, the first frequency of the grid is about 5Hz, namely the basic cycle is about 0.2s, indicating that the structure stiffness is larger and the boundary conditions on the influence of the first order frequency have the very limited impact; no matter how the supporting condition, Order n becomes larger at the same time frequency accordingly.(2) In the same circumstances N, the frequency of fixed support is the largest, simply supported support is the second smallest, and vertical support is minimum, this shows that fixed support casing space truss stiffness is the largest, vertical displacement is minimum under the loads and stability is good, simply supported support is the second smallest, and vertical support stiffness is minimum, so in the actual engineering we must select the support form reasonable .
Conclusion (1) In the same circumstances N, the frequency of fixed support is the largest, simply supported support is the second smallest, and vertical support is minimum, this shows that fixed support casing space truss stiffness is the largest, vertical displacement is minimum under the loads and stability is good, simply supported support is the second smallest, and vertical support stiffness is minimum, so in the actual engineering we must select the support form reasonable
Reference: [1] Liu Tao, master ANSYS, Tsinghua University press, 2002.09 [2] Tu zhenfei, Engineering application examples about ANSYS finite element analysis, China Building Industry Press, 2010.08 [3] Zhang Wenfu, Natural vibration finite element analysis of space truss structure, world earthquake engineering, 2003.12 [4] Zhang Wenfu , Natural vibration analysis of pyramid space grid roof structures ,Journal of Daqing Petroleum Institute, 2004.06 [5] Zhang Wenfu, the validation of equivalent sandwich plate method for double-layer space grids by finite element method , Journal of computational mechanics, 2005.08 [6] Dong Shilin, Xia Pengxi, Analysis of orthogonal and ortho-laid space truss as equivalent(sandwich)plate【J】, Journal of building structures,1982 ( 2, 3) :85-99 [7] Wu Tingting, static and dynamic response analysis of space truss structure, industrial buildings, Vol 40, 2010 [8] Zhang Wenfu, grid structure design, Harbin Institute of Technology press, 199 [9] lan
Online since: June 2013
Authors: Silvio Romero de Barros, Elder Cunha de Lira, Sandro Marden Torrres, Andre R.R. de Sousa, Marçal Rosas, Kelly Cristiane Gomes
R. de Sousa3,c, Marçal Rosas3,d, Sandro Marden Torres4,e and Silvio de Barros5,f
1 Department of Renewable Energy Engineering, UFPB, Joao Pessoa, Brazil
2 Program Postgraduate in Soil Science, UFPB, Areia, Brazil
3 Program Postgraduate in Mechanical Engineering, UFPB, Joao Pessoa, Brazil
4 Department of Materials Engineering, UFPB, Joao Pessoa, Brazil
5 Department of Mechanical Engineering, CEFET/RJ, Rio de Janeiro, Brazil
agomes@cear.ufpb.br, belder.lira@hotmail.com, candreromuloufpb@yahoo.com.br, dmarcal_civil@yahoo.com.br, esandromardentorres@yahoo.co.uk, fsilvio.debarros@gmail.com
Keywords: Geopolymerics Adhesives, Steel Plates, Adhesion, MMF Test.
Pocius: Adhesion science and engineering Vol. 1. (2002) [3] V.F.
Costa-Mattos: Journal of Pipeline Engineering Vol. 7 (2007), pp. 1
Pocius: Adhesion science and engineering Vol. 1. (2002) [3] V.F.
Costa-Mattos: Journal of Pipeline Engineering Vol. 7 (2007), pp. 1
Online since: May 2012
Authors: Geng Ren, Dun Wu Chen, Shu Li Wang, Man Gen Mu
Field Design of Jet Grouting Parameters on Soilcrete Columns
ShuLi Wang 1, a, ManGen Mu 2, c ,DunWu Chen3, c, Geng Ren4, d
1,4School of Engineering and Technology, China University of Geosciences, Beijing, China
2Yangquan college, Taiyuan University of Technology, Yangquan, China
3China Construction Municipal Construction Corporation Limited, Beijing, China
a wsl6666@cugb.edu.cn, b863731628@qq.com, c158092425@qq.com, d547868012@qq.com
Keywords: jet grouting, soilcrete column, deep pit, cut-off wall
Abstract.
Engineering Geological Evaluation [5] The typical strata structure detail of boreholes sees Fig. 2 and Table 1.
According to the soil classification of engineering geology, it belongs to normal cohesive soil and muddy soil or mud.
Acknowledgment This research was conducted in the cooperative Research on Second Contract (Ref. : A2009-1-69) Fund of East Harbor Engineering in Dalia by China University of Geosciences ,Beijing (CUGB) and Liaoning Geological Engineering Investigate Institution of Survey Group (LGEIISG).
In: Grouting in the ground, proceedings of conference Institution of Civil Engineering, London, 1992.p.605–28
Engineering Geological Evaluation [5] The typical strata structure detail of boreholes sees Fig. 2 and Table 1.
According to the soil classification of engineering geology, it belongs to normal cohesive soil and muddy soil or mud.
Acknowledgment This research was conducted in the cooperative Research on Second Contract (Ref. : A2009-1-69) Fund of East Harbor Engineering in Dalia by China University of Geosciences ,Beijing (CUGB) and Liaoning Geological Engineering Investigate Institution of Survey Group (LGEIISG).
In: Grouting in the ground, proceedings of conference Institution of Civil Engineering, London, 1992.p.605–28
Online since: January 2011
Authors: Ju Jian Sun, Rui Shi, Gai Hang Li, Guo Lian Liu
Research on Consumer’s Cognitions of Silk Products
Jujian Sun 1,2,3, a, Rui Shi 2,b, Gaihang Li 2,c, Guolian Liu 2,d
1National Engineering Laboratory for Modern Silk,199 Ren Ai Road,suzhou 215123,P.R.China
2College of Textile and Clothing Engineering,Soochow University
178 East Ganjiang Road,Suzhou 215021,P.R.China
3College of Light-Textile Engineering and Art,Anhui Agricultural University,130 West Changjiang Road,Hefei 230036,P.R.China
asunjujian@126.com, b76067716@qq.com, cgaihangabc@163.com, dliuguolian@suda.edu.en
Key words : Silk;Consumer’s Cognitions;Structural equation modeling (SEM) .
Investigators: 58 undergraduates major in garment engineering come from college of light-textile engineering and art in Anhui Agricultural University.
Table1 Respondents Distribution Respondents' information Percentage Respondents' information Percentage Sex male 33.6% Annual income below 30,000 43.7% female 65.2% 30,001-50,000 27.7% Marital status unmarried 45.3% 50,001-100,000 16.9% married 52.6% 100,001-200,000 5.5% Age below 20 7.8% over 200,000 4.8% 21-30 50.6% Vocation company 32.4% 31-40 20.6% public institution 4.7% 41-50 14.1% Civil servants 21.3% over 50 6.9% others 37.8% Degree below High school 6.05% Adress municipalities 4.14% high school or technical secondary school 20.38% provincial capital 54.59% junior college 27.35% Prefecture-level city 21.39% undergraduate 38.14% County 13.02% post undergraduate 8.07% rural town 6.86% Questionnaire design.
Acknowledgement This research was financially supported by Open subject and technology innovation pre-research program by National Engineering Laboratory for Modern Silk(NESER).
Investigators: 58 undergraduates major in garment engineering come from college of light-textile engineering and art in Anhui Agricultural University.
Table1 Respondents Distribution Respondents' information Percentage Respondents' information Percentage Sex male 33.6% Annual income below 30,000 43.7% female 65.2% 30,001-50,000 27.7% Marital status unmarried 45.3% 50,001-100,000 16.9% married 52.6% 100,001-200,000 5.5% Age below 20 7.8% over 200,000 4.8% 21-30 50.6% Vocation company 32.4% 31-40 20.6% public institution 4.7% 41-50 14.1% Civil servants 21.3% over 50 6.9% others 37.8% Degree below High school 6.05% Adress municipalities 4.14% high school or technical secondary school 20.38% provincial capital 54.59% junior college 27.35% Prefecture-level city 21.39% undergraduate 38.14% County 13.02% post undergraduate 8.07% rural town 6.86% Questionnaire design.
Acknowledgement This research was financially supported by Open subject and technology innovation pre-research program by National Engineering Laboratory for Modern Silk(NESER).
Online since: May 2011
Authors: Jian Hua Liu, Tao Qi, Jing Long Chu, Tian Yan Xue, Yan Fang Han
Kinetics on the Desiliconization during Alkaline Leaching of Titanium Slag
Jianhua Liu1,2,3, a, Jinglong Chu1,2,b, Tianyan Xue1,2, Yanfang Han4, Tao Qi 1,2,c, *
1National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,
Beijing 100190, China
2Key Laboratory of Green Process and Engineering,Institute of Process Engineering,
Chinese Academy of Sciences, Beijing 100190, China
3Graduate School of Chinese Academy of Sciences, Beijing 100190, China
4School of Civil and Environmental Engineering, University of Science and Technology Beijing
Beijing 100083,P.R.CHINA
ajhliu@mail.ipe.ac.cn, bjlchu@home.ipe.ac.cn, c* tqgreen@home.ipe.ac.cn
*Corresponding author, Tel.: + 86 10 62631710; Fax: + 86 10 62631710.
Recently, a novel metallurgical process for production of TiO2 has been developed by the Institute of Process Engineering, Chinese Academy of Science [5].
The Chinese Journal of Process Engineering.
Recently, a novel metallurgical process for production of TiO2 has been developed by the Institute of Process Engineering, Chinese Academy of Science [5].
The Chinese Journal of Process Engineering.
Online since: December 2014
Authors: Ren Shu Yang, Lai Wang Jing, Peng Wei Hao, Zhi Wei Li
The Principle and Method of The Backplane Anchor in Controlling the Overall Stability of the Surrounding Rock
Zhiwei Li 1,a,Laiwang Jing 1,b, Renshu Yang 2 and Pengwei Hao 1
1Building and civil engineering institute, Anhui University of Science and Technology, Huainan city,
Anhui province, 232001, China.
2China University of Mining and Technology, mechanics and architecture institute, Beijing 100083,
China.
Fortuantely, a backplane anchor drilling machine has been developed by Mine Engineering Mechanics and Support Technology Institute of Anhui University of Science and Technology in 2010.
Engineering Situation.
Chinese Journal of Rock Mechanics and Engineering, 2005,24(16):2803--2813. in Chinese
Chinese Journal of Geotechnical Engineering 2012,34(8):1464-1468. in Chinese
Fortuantely, a backplane anchor drilling machine has been developed by Mine Engineering Mechanics and Support Technology Institute of Anhui University of Science and Technology in 2010.
Engineering Situation.
Chinese Journal of Rock Mechanics and Engineering, 2005,24(16):2803--2813. in Chinese
Chinese Journal of Geotechnical Engineering 2012,34(8):1464-1468. in Chinese
Online since: October 2014
Authors: Marcin Kluczyk, Bogdan Szturomski, Andrzej Grządziela
Modeling of the minehunters hull strenght
Andrzej GRZĄDZIELA1,a, Bogdan SZTUROMSKI1,b & Marcin KLUCZYK1,c
1 Polish Naval Academy, Mechanical Electrical Faculty, Institute of Construction and Marine Engineering, Śmidowicza 69, 81-103 Gdynia, Poland
aa.grzadziela@amw.gdynia.pl, bb.szturomski@amw.gdynia.pl, cm.kluczyk@amw.gdynia.pl
Keywords: modeling, detonation, vibration, naval vessel, FEM.
The solution, problems of material engineering and algorithm for calculation in MES are detailed presented in following bibliography, including authors references [4,5,7,8].
Grzadziela A., Modelling of Effects of detonation Wave, Key Engineering materials.
Borek, The thermo-mechanical processing of high-manganese austenitic TWIP-type steels, Archives of Civil and Mechanical Engineering 8 (4), (2008) 29-38
Conference of International Society of Offshore and Polar Engineers ISOPE´2001, Stavanger, Vol IV Book Series: International Offshore and Polar Engineering Conference Proceedings,(2001), 282-285.
The solution, problems of material engineering and algorithm for calculation in MES are detailed presented in following bibliography, including authors references [4,5,7,8].
Grzadziela A., Modelling of Effects of detonation Wave, Key Engineering materials.
Borek, The thermo-mechanical processing of high-manganese austenitic TWIP-type steels, Archives of Civil and Mechanical Engineering 8 (4), (2008) 29-38
Conference of International Society of Offshore and Polar Engineers ISOPE´2001, Stavanger, Vol IV Book Series: International Offshore and Polar Engineering Conference Proceedings,(2001), 282-285.