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Online since: January 2013
Authors: Nan Geng
The application of the Steel materials in large-span cantilever
composite structure
Nan Geng1.a
1College of Architecture and Civil Engineering of Taiyuan University of Technology ,Taiyuan 030024,China;
a15034114160@163.com
Keywords: Large-span cantilever, Behaviour analysis, Glass curtain wall, Steel materials
Abstract.
Building function of platform is exhibition hall,which uses toughened glass as the ground material.The load of Platform is bigger.According to the Technical Code for Glass Curtain Wall Engineering[3],the absolute deflection of glass curtain wall should not be more than 20 mm.
Table 1 Scheme 1 and scheme 2 cantilever beam root internal force contrast Cantilever beam root internal force Beam end bending moment (kn·m) Beam end bending shear (kn) 5 axis 7 axis 9 axis 11 axis 5 axis 7 axis 9 axis 11 axis Scheme 1 119 1382 1012 353 81 291 261 119 Scheme 2 156 674 618 424 117 170 170 175 According to the Technical Code for glass curtain wall engineering,the absolute deflection of glass curtain wall should not be more than 20 mm.
(In Chinese) [2] Code for seismic design of buildings GB50011-2010 China Architecture & Building Press 2010 [3] Technical Code For Glass Curtain Wall Engineering JGJ102-2003.China Architecture & Building Press 2003
Building function of platform is exhibition hall,which uses toughened glass as the ground material.The load of Platform is bigger.According to the Technical Code for Glass Curtain Wall Engineering[3],the absolute deflection of glass curtain wall should not be more than 20 mm.
Table 1 Scheme 1 and scheme 2 cantilever beam root internal force contrast Cantilever beam root internal force Beam end bending moment (kn·m) Beam end bending shear (kn) 5 axis 7 axis 9 axis 11 axis 5 axis 7 axis 9 axis 11 axis Scheme 1 119 1382 1012 353 81 291 261 119 Scheme 2 156 674 618 424 117 170 170 175 According to the Technical Code for glass curtain wall engineering,the absolute deflection of glass curtain wall should not be more than 20 mm.
(In Chinese) [2] Code for seismic design of buildings GB50011-2010 China Architecture & Building Press 2010 [3] Technical Code For Glass Curtain Wall Engineering JGJ102-2003.China Architecture & Building Press 2003
Online since: November 2015
Authors: Nicanor Cimpoeşu, Costică Bejinariu, Ioan Carcea, Adrian Alexandru, Viorel Paleu, Daniela Lucia Chicet, Costel Florea
Prasad, Sliding wear response of cast iron as influenced by microstructural features and test condition, Materials Science and Engineering A. 456 (2007) 373-385
Niesłony, S.Legutko, Determination of tool life and research wear during duplex stainless steel turning, Archives of Civil and Mechanical Engineering. 15 (2015) 347–354
Madizhanova, The Abrasive Wear Resistance of Chromium Cast Iron, Archives of foundry engineering. 14 (2014) 63 – 66
Wróbel, Crystallization of low alloyed construction cast steel modified with V and Ti., Archives of Foundry Engineering. 13 (2013) 92–96.
Niesłony, S.Legutko, Determination of tool life and research wear during duplex stainless steel turning, Archives of Civil and Mechanical Engineering. 15 (2015) 347–354
Madizhanova, The Abrasive Wear Resistance of Chromium Cast Iron, Archives of foundry engineering. 14 (2014) 63 – 66
Wróbel, Crystallization of low alloyed construction cast steel modified with V and Ti., Archives of Foundry Engineering. 13 (2013) 92–96.
Online since: February 2012
Authors: Wen Tong Yang, Li Gang Cai, Chun Hua Guo, Zhi Min Zhang, Zhifeng Liu
Comparison of Adomian Decomposition Method and Differential Transformation Method for Vibration Problems of Euler-Bernoulli Beam
Zhifeng Liu1,a, Chunhua Guo1,b,Ligang Cai1,c,Wentong Yang1,d,Zhimin Zhang1,e
1College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China
alzf@bjut.edu.cn, bherogch@163.com, clgcai321@yahoo.com.cn, dwtyang@bjut.edu.cn, ezhangzhimin45@163.com
Keywords: Differential transformation method, Adomian decomposition method, Clamped-Free, Uniform Euler-Bernoulli Beam, Frequencies and Mode, Nonlinear
Abstract.
Introduction Beams are used extensively as structural elements in many types of structures within the fields of mechanical, aeronautical, and civil engineering.
Tonningen[5] found that, unlike other series solution methods, the decomposition method is easy to program for engineering problems and provides immediate and visible solution terms without linearization and discretization.
(Project Grant No. 51075006) References [1] A.D.Dimarogonas: Vibration for Engineers (second edition)(Prentice Hall International Editions 1996)
Introduction Beams are used extensively as structural elements in many types of structures within the fields of mechanical, aeronautical, and civil engineering.
Tonningen[5] found that, unlike other series solution methods, the decomposition method is easy to program for engineering problems and provides immediate and visible solution terms without linearization and discretization.
(Project Grant No. 51075006) References [1] A.D.Dimarogonas: Vibration for Engineers (second edition)(Prentice Hall International Editions 1996)
Online since: October 2010
Authors: Yun Peng Chu, Yong Yao, Shu Lian Xiao, Yue Chen
The Seismic Behavior of Strengthened Joints Between Concrete-filled Steel Tubes and Beams Based on the Numerical Simulation Technology
Yun-peng Chu, Yong Yao, Shu-lian Xiao, Yue Chen
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
Email: chuyunpeng@swust.edu.cn , yy001221@163.com , 349779228@qq.com 471469647@qq.com
Keywords: Frame joint; Nonlinear FEM analysis; Ductility; Seismic behavior
Abstract, As a key part in concrete-filled steel tubular frames, the seismic behavior of joints between concrete-filled steel tubes and beams needs more research because of the complexity of stress under the reciprocating load. the behavior of 9 strengthened joints connecting concrete-filled steel tube with H-shaped steel beam have been analyzed under reversed cyclic loading condition by using finite element analysis software ANSYS, and the result show that: (1) The ultimate bearing capacity, energy dissipation capacity
Double-layer concrete-filled steel columns have more excellent seismic performance, and with the stronger binding on concrete steel tubes have, the internal concrete can avoid to be crushing which may occur in common concrete filled steel pipes, Therefore, applying it to long-span bridges and tall buildings there will be more engineering significance[5-6].
Main results Number Ductility ST-1 ST-2 ST-3 ST-4 ST-5 ST-6 ST-7 ST-8 ST-9 Yield state 202.10 217.60 220.45 214.01 212.25 254.90 224.63 281.71 288.24 11.29 12.89 16.26 12.58 12.56 17.18 13.21 22.23 23.89 Limit state 278.17 287.19 314.92 340.53 302.79 399.51 330.56 432.06 398.69 22.01 42.42 46.95 35.49 38.78 58.91 42.21 55.54 59.19 0.138 0.161 0.173 0.150 0.158 0.238 0.213 0.181 0.178 1.95 3.29 2.89 2.82 3.09 3.43 3.19 2.50 2.48 Conclusions Compared to concrete-filled steel tube, the seismic performance of nodes of double-layer concrete-filled steel tube is greatly improved, has certain advantages in engineering applications
Engineering Mechanics, 2009,26 Supplement (I):139-144.
(In Chinese) [3] Kyung-jae Shin, Yong-Ju Kim, Yong-Suk Oh..Engineering Structures.2004, (26): 1877-1887
Double-layer concrete-filled steel columns have more excellent seismic performance, and with the stronger binding on concrete steel tubes have, the internal concrete can avoid to be crushing which may occur in common concrete filled steel pipes, Therefore, applying it to long-span bridges and tall buildings there will be more engineering significance[5-6].
Main results Number Ductility ST-1 ST-2 ST-3 ST-4 ST-5 ST-6 ST-7 ST-8 ST-9 Yield state 202.10 217.60 220.45 214.01 212.25 254.90 224.63 281.71 288.24 11.29 12.89 16.26 12.58 12.56 17.18 13.21 22.23 23.89 Limit state 278.17 287.19 314.92 340.53 302.79 399.51 330.56 432.06 398.69 22.01 42.42 46.95 35.49 38.78 58.91 42.21 55.54 59.19 0.138 0.161 0.173 0.150 0.158 0.238 0.213 0.181 0.178 1.95 3.29 2.89 2.82 3.09 3.43 3.19 2.50 2.48 Conclusions Compared to concrete-filled steel tube, the seismic performance of nodes of double-layer concrete-filled steel tube is greatly improved, has certain advantages in engineering applications
Engineering Mechanics, 2009,26 Supplement (I):139-144.
(In Chinese) [3] Kyung-jae Shin, Yong-Ju Kim, Yong-Suk Oh..Engineering Structures.2004, (26): 1877-1887
Online since: December 2010
Authors: Cheng Ling, Lan Zhou, Fan Gu
Introduction
Since the pavement system is an open complicated system, its performance is affected by engineering, environmental, and several other factors besides its own structure and traffic load [1].
Extension Theory has been applied in some engineering fields, such as process control [4], Intelligence Traffic System (ITS) [5], dam performance assessment [6], slope stability evaluation [7], Artificial Intelligence (AI) and other applications [8].
Suppose the pavement performance has m kinds of states and n indicators for evaluation, the matter element composed of standard set P0j and its n indicators called ci (i=1…n) and the values of the indicators v0ji=〈a0ji,b0ji〉are defined as Classical Field matter element for pavement performance evaluation, taken as: (2) Where P0j -- the pavement performance state (j=1,2,… ,m); ci – the indicator of pavement performance state P0j(i= 1,2,… , n ); V0ji -- the thresholds of indicator ci at state P0j, which is called the Classical Fields; a0ji, b0ji -- the low-bound and up-bound threshold of V0ji, which are determined either by engineering experiences or the results from a panel of experts.
China Civil Engineering Journal. 2004, 1: P65-69
Extension engineering[M].
Extension Theory has been applied in some engineering fields, such as process control [4], Intelligence Traffic System (ITS) [5], dam performance assessment [6], slope stability evaluation [7], Artificial Intelligence (AI) and other applications [8].
Suppose the pavement performance has m kinds of states and n indicators for evaluation, the matter element composed of standard set P0j and its n indicators called ci (i=1…n) and the values of the indicators v0ji=〈a0ji,b0ji〉are defined as Classical Field matter element for pavement performance evaluation, taken as: (2) Where P0j -- the pavement performance state (j=1,2,… ,m); ci – the indicator of pavement performance state P0j(i= 1,2,… , n ); V0ji -- the thresholds of indicator ci at state P0j, which is called the Classical Fields; a0ji, b0ji -- the low-bound and up-bound threshold of V0ji, which are determined either by engineering experiences or the results from a panel of experts.
China Civil Engineering Journal. 2004, 1: P65-69
Extension engineering[M].
Online since: June 2007
Authors: F.B. Okokon, Mathew A. Oduh, N.A. Akpan
Akpan
3
1,2,3
Department of Agricultural and Food Engineering,
Faculty of Engineering, University of Uyo,
P.M.B. 1017, Uyo, Akwa Ibom State, Nigeria.
This suggests that agricultural materials unlike civil materials can imbibe moisture easily.
[5] ASAE S. 319 Agricultural Engineering Yearbook, 1988 Moisture Content Determination (1988) [6] L.
Global Journal of Engineering Research 5 No 1 & 2, 75-78
Journal of Agricultural Engineering Research (1972)
This suggests that agricultural materials unlike civil materials can imbibe moisture easily.
[5] ASAE S. 319 Agricultural Engineering Yearbook, 1988 Moisture Content Determination (1988) [6] L.
Global Journal of Engineering Research 5 No 1 & 2, 75-78
Journal of Agricultural Engineering Research (1972)
Online since: December 2014
Authors: Jie Zhao, Shi Kui Huang
Seismic analysis of the entrance section of a nuclear power intake tunnel
Shikui Huang 1, Jie Zhao 2,a
1State Nuclear Electric Power Planning Design&Research Institute, Beijing 100000
2Dalian University R&D Center of the Civil Engineering Technology, Dalian 116622
azhaojie_gd@163.com
Key words: the tunnel hole; high slope; seismic resistance; stability; nuclear power
Abstract.
Therefore, the anti-earthquake analysis of the tunnel entrance in earthquake region has important meaning in engineering, and it is significant in both theoretical and practical.
In this paper, seismic analysis of portal section of intake tunnel in the first phase of hongyan river nuclear power engineering is presented, and internal force envelope diagram of lining is illustrated based on it.
Example and application Project profile In the first phase of hongyan river nuclear power engineering, the nuclear power unit of nuclear power plant use the water-intake way of “one unit for one tunnel”, which use two intake tunnels with diameter 5.5m to PX pump station.
Underground space and engineering journal, 2006, 2(5): 738- 743
Therefore, the anti-earthquake analysis of the tunnel entrance in earthquake region has important meaning in engineering, and it is significant in both theoretical and practical.
In this paper, seismic analysis of portal section of intake tunnel in the first phase of hongyan river nuclear power engineering is presented, and internal force envelope diagram of lining is illustrated based on it.
Example and application Project profile In the first phase of hongyan river nuclear power engineering, the nuclear power unit of nuclear power plant use the water-intake way of “one unit for one tunnel”, which use two intake tunnels with diameter 5.5m to PX pump station.
Underground space and engineering journal, 2006, 2(5): 738- 743
Online since: May 2014
Authors: Qiu Mei Zhang, Wei Mei Zhang
, sterilizing and disinfecting
freezing medium material replacing Freon
environmental alternative material
non phosphorus industrial and civil chemical material
structural material with great environmental capacity replaced by bamboo and wood, etc.
Biomimetic material has natural coordination with the environment and human body from preparation to application of material on the basis of biological compatibility and biomimetic materials that have been researched and developed mainly include biological ceramic and its composite material, tissue engineering material and biomimetic intelligence material, etc.
Tissue engineering material is a sort of biomimetic materials that are used to replace the tissue organ of some sorts of organisms or recover, maintain and improve their functions.
The common tissue engineering materials include tissue leading material, tissue induction material, tissue isolation material, tissue repair material and tissue alternating material, etc.
So far, there have been a lot of reports about application of LCA in material science and engineering and about the entire life process of LCA method in assessing a certain material product or its technical process.
Biomimetic material has natural coordination with the environment and human body from preparation to application of material on the basis of biological compatibility and biomimetic materials that have been researched and developed mainly include biological ceramic and its composite material, tissue engineering material and biomimetic intelligence material, etc.
Tissue engineering material is a sort of biomimetic materials that are used to replace the tissue organ of some sorts of organisms or recover, maintain and improve their functions.
The common tissue engineering materials include tissue leading material, tissue induction material, tissue isolation material, tissue repair material and tissue alternating material, etc.
So far, there have been a lot of reports about application of LCA in material science and engineering and about the entire life process of LCA method in assessing a certain material product or its technical process.
Online since: July 2014
Authors: Jian Xin Liu, Pei Li, Jie Shen, Mei Chun Zhu
Experimental and Theoretical Studies On High-rise Building Structure With New Special-shaped Shear Walls
Jianxin Liu1, 2, a, Pei Li1, b, Jie Shen 2, c, Meichun Zhu2, d
1Shanghai Jianqiao University, Shanghai 201315, China
2College of Civil Engineering, Shanghai Normal University, Shanghai 201418, China
aljx163@163.com, b289520505@qq.com,lipeishnu@163.com(Corresponding Author), cshifandaxue@163.com, dzhumeichun@163.com
Keywords: Special-shaped shear wall structure; Shear wall model; Low reversed cyclic loading experiment; Finite element analysis
Abstract.
It is rarely reported at home and aboard on the special-shaped shear wall structure under low reversed cyclic loading seismic experiment and the theoretical analysis based on related experiment, therefore, the research in this paper has its scientific and engineering significance.
The entire test is carried through in the Structure Hall in Architectural Engineering Institute, Shanghai Normal University.
[3] Jianxin Liu, Shaohe Zhang: Engineering Mechanics. 02 (1999) 893
Journal of Structural Engineering. 109(1983) 1174—1193.
It is rarely reported at home and aboard on the special-shaped shear wall structure under low reversed cyclic loading seismic experiment and the theoretical analysis based on related experiment, therefore, the research in this paper has its scientific and engineering significance.
The entire test is carried through in the Structure Hall in Architectural Engineering Institute, Shanghai Normal University.
[3] Jianxin Liu, Shaohe Zhang: Engineering Mechanics. 02 (1999) 893
Journal of Structural Engineering. 109(1983) 1174—1193.
Online since: December 2012
Authors: Tao Li, Lei Wang
Shanghai University of Engineering Science, Urban Railway Transportation College,Shanghai, 201620;
2.
Beijing Jiaotong University, School of Civil Engineering and Architecture, Beijing, 100044 Keyword: Chunnel Fractured rock mass grouting diffusion radius Bingham fluid Abstract: To conduct pro-grouting design and make the prediction of the result of grouting about the chunnel that passes through fractured rock mass, the essay adopts following theoretical formula to calculate the fractured rock mass grouting diffusion radius: Wittke and Wallner Formula, Lombadi Formula and Huang Chunhua Formula.
The article calculates the grouting diffusion radius based on the Bingham fluid and through analyzing various factors and their variations to get a reasonable grouting diffusion radius of the chunnel. 1 Project Profile Jiaozhou Bay Subsea Tunnel of Qingdao is the second subsea tunnel in China.In the south of the tunnel connects Huangdao district of Xuejiadao and in the north of the tunnel connects Qingdao island group and down through the mouth of the Jiaozhou Bay.The whole length of the tunnel is 6170m and the length of the sea is 3950m.Tunnel uses bidirectional double action six lane and sets service tunnel in the middle of it.The tunnel mainly uses drilling and blasting method. 2 Jiaozhou Bay seabed tunnels pre-grouting program According to the contingency plans in the Jiaozhou Bay tunnel ahead of the pre-water grouting programs and technology, equipment and construction sudden gushing case and control techniques and Jiaozhou Bay, Qingdao tunnel engineering geology report Can
Railway Engineering Society, 2009 (9) :64-68
Geotechnical Grouting Theory and Engineering instance [M] Beijing: Science Press, 2001
Beijing Jiaotong University, School of Civil Engineering and Architecture, Beijing, 100044 Keyword: Chunnel Fractured rock mass grouting diffusion radius Bingham fluid Abstract: To conduct pro-grouting design and make the prediction of the result of grouting about the chunnel that passes through fractured rock mass, the essay adopts following theoretical formula to calculate the fractured rock mass grouting diffusion radius: Wittke and Wallner Formula, Lombadi Formula and Huang Chunhua Formula.
The article calculates the grouting diffusion radius based on the Bingham fluid and through analyzing various factors and their variations to get a reasonable grouting diffusion radius of the chunnel. 1 Project Profile Jiaozhou Bay Subsea Tunnel of Qingdao is the second subsea tunnel in China.In the south of the tunnel connects Huangdao district of Xuejiadao and in the north of the tunnel connects Qingdao island group and down through the mouth of the Jiaozhou Bay.The whole length of the tunnel is 6170m and the length of the sea is 3950m.Tunnel uses bidirectional double action six lane and sets service tunnel in the middle of it.The tunnel mainly uses drilling and blasting method. 2 Jiaozhou Bay seabed tunnels pre-grouting program According to the contingency plans in the Jiaozhou Bay tunnel ahead of the pre-water grouting programs and technology, equipment and construction sudden gushing case and control techniques and Jiaozhou Bay, Qingdao tunnel engineering geology report Can
Railway Engineering Society, 2009 (9) :64-68
Geotechnical Grouting Theory and Engineering instance [M] Beijing: Science Press, 2001