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Online since: October 2011
Authors: Yong Quan Zhu, Xin Qiang Gao, Gang Rong
Analysis on the Development Trend of the Longitudinal Cracks During Tunnels Construction Based on the Strength Reduction Theory
Xinqiang Gao 1,a, Gang Rong 1,b and Yongquan Zhu 1,c
1School of Civil Eng., Shijiazhuang Tiedao University, Shijiazhuang 050043, China
agxqgaoxinqiang@163.com, bronggang2323@163.com, c7935526@163.com
Keywords: Loess tunnel, Formation crack, Strength reduction method, Crack dip
Abstract.
Introduction The loess, as typical unsaturated soil, has many particular engineering property, which include wide distribution, large thickness, chinky, water-disintegrable, softening, collapsibility, easy dynamic deformation, liquefaction, and anisotropism[1].
Acknowledgements This work was financially supported by the China Natural Science Foundation (50978172) and Civil Engineering School of Shijiazhuang Tiedao University Foundation (52704706).
In Chinese [2] Wei Zhang, Suming Zhang: Hydrogeology and Engineering Geology. 1990(1), p. 22-25, In Chinese [3] Zhongquan Lu, Jianbing Peng, Zhixin Chen: Journal of Soil and Water Conservation.
Vol.19 (2005), p. 191-194, In Chinese [4] Zheng, Sun G H, Liu D F: Computers and Geotechnics, 2009, 36(1) , p. 1-5, In Chinese [5] Yingren Zheng, Shangyi Zhao, Yakun Song:Journal of Logistical Engineering University. 2005, 21(3) , p. 1-6, In Chinese [6] Shijiazhuang Railway Institute: Research report, Shijiazhuang(2009), In Chinese [7] Yongquan Zhu, XinqiangGao, Yong Cao, in: Symposium of The 10th Rock Mechanics and Engineering Conference (China Power Publishing House, China 2008), In Chinese
Introduction The loess, as typical unsaturated soil, has many particular engineering property, which include wide distribution, large thickness, chinky, water-disintegrable, softening, collapsibility, easy dynamic deformation, liquefaction, and anisotropism[1].
Acknowledgements This work was financially supported by the China Natural Science Foundation (50978172) and Civil Engineering School of Shijiazhuang Tiedao University Foundation (52704706).
In Chinese [2] Wei Zhang, Suming Zhang: Hydrogeology and Engineering Geology. 1990(1), p. 22-25, In Chinese [3] Zhongquan Lu, Jianbing Peng, Zhixin Chen: Journal of Soil and Water Conservation.
Vol.19 (2005), p. 191-194, In Chinese [4] Zheng, Sun G H, Liu D F: Computers and Geotechnics, 2009, 36(1) , p. 1-5, In Chinese [5] Yingren Zheng, Shangyi Zhao, Yakun Song:Journal of Logistical Engineering University. 2005, 21(3) , p. 1-6, In Chinese [6] Shijiazhuang Railway Institute: Research report, Shijiazhuang(2009), In Chinese [7] Yongquan Zhu, XinqiangGao, Yong Cao, in: Symposium of The 10th Rock Mechanics and Engineering Conference (China Power Publishing House, China 2008), In Chinese
Online since: February 2013
Authors: Luo Jun Gong, Gui Ping Li, Qian Qian Yan, Lei Wang, Wen Chao Li, Wei Han
The Basic Principles of the Rural Village Wetland Sewage Treatment System in Wuhan
Luojun Gong1,2,a ,Wei Han1,b, Guiping Li1,c,Lei Wang1,d , Wenchao Li1,e, Qianqian Yan1,f
1Wuhan Water & Sky Biology-Environmental Engineering co.
Engineering design. 1) Graphic design.
In the specific design, according to the parameters, to determine the specific design, civil engineering geometry size, equipment configuration, matrix selection and use, the wetland plant choice and planting and conservation.
Thirdly, we put the civil construction in the environmental protection projects to the owner for construction.
Although in 2010 in Lohan street, Huangpi District construction of artificial wetland wastewater treatment facilities in the demonstration project was named the only model works, but in the process of engineering construction, not into the construction scope of landscaping.
Engineering design. 1) Graphic design.
In the specific design, according to the parameters, to determine the specific design, civil engineering geometry size, equipment configuration, matrix selection and use, the wetland plant choice and planting and conservation.
Thirdly, we put the civil construction in the environmental protection projects to the owner for construction.
Although in 2010 in Lohan street, Huangpi District construction of artificial wetland wastewater treatment facilities in the demonstration project was named the only model works, but in the process of engineering construction, not into the construction scope of landscaping.
Online since: November 2015
Authors: T. Matsumura, Susumu Shimizu, Hiromi Fujiwara, Masanori Maruoka
., Ltd.
1340, Orinokuchi, Fukaya-shi, 366-0812, Japan
2 Dept. of Architectural and Civil Engineering, Utsunomiya University,
7-1-2, Yoto, Utsunomiya, Tochigi, 321-8585, Japan
as.shimizu@chichicon.co.jp, bfhiromi@cc.utsunomiya-u.ac.jp, cmmaruoka@cc.utsunomiya-u.ac.jp, dt.matsumura@chichicon.co.jp
* Corresponding author
Keywords: polymer cement mortar, flow value, adhesion performance, dynamic stability, rutting
Abstract.
References [1] Japan Society of Civil Engineering, Pavement Engineering (1995)
Takahashi, Examination on Properties of Road Surface Repair Material of Cold Hardening Type and Simplified Evaluation Method of its Hardening Time, International Journal of the Society of Materials Engineering for Resources, vol.15, No.2, (2008) 30-36
Takeda, The Evaluation of a High-Performance Pattern Cold Mixture to Use for the Pot Hole of Low Noise Pavement, Journal of Pavement Engineering, JSCE, vol.12, (2007) 131-138
References [1] Japan Society of Civil Engineering, Pavement Engineering (1995)
Takahashi, Examination on Properties of Road Surface Repair Material of Cold Hardening Type and Simplified Evaluation Method of its Hardening Time, International Journal of the Society of Materials Engineering for Resources, vol.15, No.2, (2008) 30-36
Takeda, The Evaluation of a High-Performance Pattern Cold Mixture to Use for the Pot Hole of Low Noise Pavement, Journal of Pavement Engineering, JSCE, vol.12, (2007) 131-138
Online since: January 2016
Authors: Januarti Jaya Ekaputri, Subaer Subaer, Abdul Haris, Nurhayati Nurhayati, Irhamsyah Andi
Daeng Tata Raya, Makassar, Indonesia
2Department of Civil Engineering, Institut Teknologi Sepuluh Nopember, Sukolilo, Surabaya, 60111, Indonesia
ajzubayir@yahoo.com, bAbdulharis@yahoo.co.id,cNurhayati_unm@yahoo.com dirhamsyah.physics@gmail.com,ejanuarti_je@yahoo.com
Keywords: geopolymers, metakaolin, physical properties, microstructure characters
Abstract.
It is expected that in the near future these applications will also be found in automobile and aerospace industries, non-ferrous foundries and metallurgy, civil engineering and plastic industries [18-21].
Understanding of geopolymers is built to the point where binder properties can be tailored a priori by rational mix design, and the understanding of the binder structure is sufficient to explain why these properties can be expected to last for a sufficient period of time to render the material fit for purpose in an engineering sense [22].
Theory and applications", Minerals Engineering, 10, (7), 659-669
P. (2003), "Fire-resistant geopolymer produced by granulated blast furnace slag", Minerals Engineering, 16, 205 - 210
It is expected that in the near future these applications will also be found in automobile and aerospace industries, non-ferrous foundries and metallurgy, civil engineering and plastic industries [18-21].
Understanding of geopolymers is built to the point where binder properties can be tailored a priori by rational mix design, and the understanding of the binder structure is sufficient to explain why these properties can be expected to last for a sufficient period of time to render the material fit for purpose in an engineering sense [22].
Theory and applications", Minerals Engineering, 10, (7), 659-669
P. (2003), "Fire-resistant geopolymer produced by granulated blast furnace slag", Minerals Engineering, 16, 205 - 210
Online since: May 2012
Authors: Pei Yan Huang, Xiao Hong Zheng, Hai Yang Wang, Xin Yan Guo
Thermal fatigue performance of steel fiber reinforced polymer high strength concrete
WANG Haiyang1, a, HUANG Peiyan1, b, ZHENG Xiaohong1, c, GUO Xinyan1, a
1School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, China
awhy cac@126.com,bpyhuang@scut.edu.cn, cxhzheng@scut.edu.cn
Keywords: steel fiber reinforced polymer high strength concrete (SFPHC); Thermal fatigue; C60 concrete; bridge structure
Abstract: To discover the fatigue behavior and durability of the new type fiber concrete named “steel fiber reinforced polymer high strength concrete (SFPHC)”, considering climatic conditions in Guangdong Province, using research method of theoretical analysis combined with experimental study, thermal fatigue behavior of SFPHC used in bridge superstructure in three different temperatures (20˚C，50˚C，80˚C) is discussed and compared with concrete C60 which has similar static mechanical properties at room temperature.
In ordinary situations, test ended when loading cycles reached to 2×106 if specimen was not damage, because following the specifications in civil engineering, specimens were considered to withstand infinite cyclic loading or have infinite fatigue life.
ENGINEERING STRUCTURES, 2007, 29(7): 1253～1262 [4] YI Cheng; SHEN Shi-zhao; XIE He-ping.
Engineering Mechanics, 2002, 19 (5): 1-6 (in Chinese) [5] YU Ying-hua; HU Xiao-jun; XU Ping.
The Engineering Design of PavingMaterials on Wei He Steel Bridge Deck.
In ordinary situations, test ended when loading cycles reached to 2×106 if specimen was not damage, because following the specifications in civil engineering, specimens were considered to withstand infinite cyclic loading or have infinite fatigue life.
ENGINEERING STRUCTURES, 2007, 29(7): 1253～1262 [4] YI Cheng; SHEN Shi-zhao; XIE He-ping.
Engineering Mechanics, 2002, 19 (5): 1-6 (in Chinese) [5] YU Ying-hua; HU Xiao-jun; XU Ping.
The Engineering Design of PavingMaterials on Wei He Steel Bridge Deck.
Online since: December 2010
Authors: Jian Hua Shao, Zai Hui Wang, Guang Ya Tao
Research on the Unloading Process of Long-Span Steel Roof and the Design of Temporary Bracing Structure
Jianhua Shao1,a, Zaihui Wang2,b, Guangya Tao3,c
1School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China;
2Zhenjiang Huahang Engineering Cost Consulting Co.
The designed bracing structure is based on meeting the demand of engineering construction and will be reused by other projects to provide the economical performance for the sake of drawing attention to the future development trend of steel structure at the same time.
Engineering Mechanics,2006,23(5):83-88.
(In Chinese) [9] Yanlin Guo, Yufei Guo, Xuewu Liu: Journal of Architecture and Civil Engineering, 2007,24(1): 52-58.
The designed bracing structure is based on meeting the demand of engineering construction and will be reused by other projects to provide the economical performance for the sake of drawing attention to the future development trend of steel structure at the same time.
Engineering Mechanics,2006,23(5):83-88.
(In Chinese) [9] Yanlin Guo, Yufei Guo, Xuewu Liu: Journal of Architecture and Civil Engineering, 2007,24(1): 52-58.
Online since: December 2010
Authors: Zhi Xu, Lei Lei Li, Xian Xi Tang, Yue Xu
Experimental Study of Ultimate Bearing Capacity of
Hinged Plates with Different Configuration Hinge Joints
Xianxi Tang 1,2,a, Yue Xu 1,b,Zhi Xu1,c, Leilei Li1,d
1School of Highway, Chang’an University, Xi’an, 710064, China
2School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
atxx9999@163.com, byx1958@163.com,cxuzhibridge@163.com,dliwenlei2583@163.com
Keywords: Concrete Plate; Configuration of Hinge Joints; Fatigue Test; Ultimate Bearing Capacity; Deflection; Lateral Strain.
Journal of Zhengzhou University (Engineering Science) 2007, 28(3)：44-47.
Key Engineering Materials, 2003, 245-346: 323-330
Journal of Zhengzhou University (Engineering Science). 2007, 28(4): 4-7.
China Civil Engineering Journal . 1997, 30(5): 20-27.
Journal of Zhengzhou University (Engineering Science) 2007, 28(3)：44-47.
Key Engineering Materials, 2003, 245-346: 323-330
Journal of Zhengzhou University (Engineering Science). 2007, 28(4): 4-7.
China Civil Engineering Journal . 1997, 30(5): 20-27.
Online since: March 2013
Authors: Chao Li, Yu Lan Wang
Method of TER Location for High-grade Highway
Based on Fuzzy Rough Set
Li Chao1, a, Wang Yulan2,b
1 Civil Engineering Department, Shandong Jiaotong University, Shandong Jinan 250023, China
2 designing room 3 of road and bridge, Shandong Provincial Communications Planning and Design Institute, Shandong Jinan 250031, China
alic211@163.com, bjinahelen@sohu.com
Keywords: highway engineering, Truck Escape Ramp, location, fuzzy rough set.
Technical standard of highway engineering explicitly recommend that TER should be set on the long-steep downgrades.
Method of Highway TER Location Based on Fuzzy Rough Set Engineering Example Used the method to evaluate the running safety of the unit sections on the long-steep downgrade
Safety design and evaluation method of long-sleep down-grade sections for expressway[J].Journal of Traffic and Transporation Engineering, 2010, 10(3):10- 16
Technical standard of highway engineering explicitly recommend that TER should be set on the long-steep downgrades.
Method of Highway TER Location Based on Fuzzy Rough Set Engineering Example Used the method to evaluate the running safety of the unit sections on the long-steep downgrade
Safety design and evaluation method of long-sleep down-grade sections for expressway[J].Journal of Traffic and Transporation Engineering, 2010, 10(3):10- 16
Online since: July 2014
Authors: Robert Černý, Kamil Ďurana
Application of digital optical microscopy in materials and mechanical engineering: optical porosimetry and crack detection
Kamil Ďurana1, a *, Robert Černý1, b,
1 Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic
akamil.durana@fsv.cvut.cz, bcernyr@fsv.cvut.cz
Keywords: image processing, optical porosimetry, crack detection, building materials, microscopy
Abstract.
In this paper two examples of application in materials and mechanical engineering are introduced.
Over the years of experimental methods in materials engineering we introduced many for estimation of the porosity and pore size distribution [1].
These results are important for mechanical engineering and predictions of stress-strain analysis.
I: Theory, Journal of engineering mechanics (2008) 72-81
In this paper two examples of application in materials and mechanical engineering are introduced.
Over the years of experimental methods in materials engineering we introduced many for estimation of the porosity and pore size distribution [1].
These results are important for mechanical engineering and predictions of stress-strain analysis.
I: Theory, Journal of engineering mechanics (2008) 72-81
Online since: November 2021
Authors: Oladimeji B. Olalusi, Paul O. Awoyera, O.E. Babalola, D.H. Le, S.K. Bhagat
Bhagat1,e
1Faculty of Civil Engineering, Ton Duc Thang University,
Ho Chi Minh City, Vietnam
2Department of Civil Engineering, Covenant University,
Ota, Nigeria
3Department of Civil Engineering, University of KwaZulu-Natal, Durban,
South Africa
ababalolaolusolaemmanuel.st@tdtu.edu.vn, bawopaul2002@gmail.com, cleduchien@tdtu.edu.vn, dolalusiO@ukzn.ac.za, ebhagatsurajkumar.st@tdtu.edu.vn
Keywords: Black carbon soot; Carbonation; Compressive strength; Tensile strength; Durability
Abstract.
Result of steel tensile strength test at 90 days exposure to carbonation Concentration Cover (mm) Load (N) Ultimate stress (N/mm2) Elongation (mm) Engineering strain True Strain Control 20 75379 667.07 24.51 0.12 0.11 30 75602.9 668.39 26.47 0.13 0.12 40 75561.1 668.02 22.52 0.11 0.1 400 ppm 20 75317.9 665.87 24.05 0.12 0.11 30 75477.8 667.28 25.7 0.12 0.12 40 75522.6 667.68 23.03 0.13 0.11 800 ppm 20 68898 609.7 21.71 0.11 0.1 30 71941 637.65 23.26 0.12 0.11 40 73587 650.65 21.67 0.11 0.1 1200 ppm 20 65161 575.98 26.7 0.13 0.12 30 68549 606.03 23.91 0.12 0.11 40 69854 617.65 25.47 0.13 0.12 Fig. 5.
Result of steel tensile strength test at 90 days exposure to carbonation Concentration Cover (mm) Load (N) Ultimate stress (N/mm2) Elongation (mm) Engineering strain True Strain Control 20 75379 667.07 24.51 0.12 0.11 30 75602.9 668.39 26.47 0.13 0.12 40 75561.1 668.02 22.52 0.11 0.1 400 ppm 20 75317.9 665.87 24.05 0.12 0.11 30 75477.8 667.28 25.7 0.12 0.12 40 75522.6 667.68 23.03 0.13 0.11 800 ppm 20 68898 609.7 21.71 0.11 0.1 30 71941 637.65 23.26 0.12 0.11 40 73587 650.65 21.67 0.11 0.1 1200 ppm 20 65161 575.98 26.7 0.13 0.12 30 68549 606.03 23.91 0.12 0.11 40 69854 617.65 25.47 0.13 0.12 Fig. 5.