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Online since: August 2013
Authors: Hao Lin Yang, De Qin Song, Wan Cheng Yuan, Xin Zhi Dang
In this paper, an alternative aseismic system for bridge with pile-cap foundation called a separated pile-cap with proper material set in the gap layer was proposed.
But when it comes to the separated cap, it has a bigger cross section area and there are multiple choices for the material placed in the middle gap which could provide great adaptability and flexibility.
Acknowledgement This research is supported by the Ministry of Science and Technology of China under Grant No.
SLDRCE09-B-08, Kwang-Hua Fund for College of Civil Engineering, Tongji University, and the National Natural Science Foundation of China under Grants No. 50978194, 90915011 and 51278376.
References [1] G.W.Housner, The behavior of inverted pendulum structures during earthquakes, Bulletin of the Seismological Society of America, Vol. 53(1963):403-417 [2] M.P.Enull, K.Kawashima, Rocking isolation of a typical bridge pier on spread foundation, Journal of Earthquake Engineering, Vol. 9, Special Issue 2(2005):395-414 [3] C.T.
Online since: June 2015
Authors: Mohamad Deraman, Rusli Daik, Sepideh Soltaninejad, Rakhmawati Farma, Nur Hamizah Basri, Mohd Amir Radhi Othman, Najah Syahirah Mohd Nor, Awitdrus Awitdrus, Nurul Fatin Mamat
This equation is found to produce a satisfactory result and is expected to be beneficial for studying supercapacitor electrode materials.
Current trend indicates that electrode materials such as carbon nanotubes [2], carbon aerogels [3], graphene[4], metal oxide [5], conducting polymers [6], composite materials [7] and activated carbon [8-10] have been widely studied and developed.
Materials and Methods The material we used as precursor to produce supercapacitor activated carbon electrodes was fibers of oil palm empty fruit (EFB) bunches.
Mesoporous carbon materials as electrodes for electrochemical supercapacitors.
Scientific World Journal., 2013, 1-6
Online since: April 2014
Authors: Bin Liang, Liang Lv
Research on Mechanical Behavior of Box Girder with Corrugated Steel Webs of Cable Stayed Bridge Liang Lv, Bin Liang Civil Engineering School, Henan University of Science and Technology, Luoyang 471023, China Keywords: box girder with corrugated steel webs; cable stayed bridge; deflection; stress; strain Abstract.
Compared with box girder bridge with concrete webs, box girder bridge with corrugated steel webs has many advantages such as lighter weight, higher prestressed transfer efficiency, higher material utilization, quicker construction and good-looking appearance etc[1].
All materials were assumed isotropic, all calculations only considered the elastic stage.
Engineering Journal. 42 (2005) 1-13
China Journal of Highway and Transport. 17 (2004) 31-36.
Online since: October 2010
Authors: Pu Xing, Xiu Jie Yin, Jing Yun Zhao
As the key part of mixing system, the shape of the blades affects the fresh concrete mixing quality, the material feed rate and residual rate, which was the major target to be optimal designing.
In order to save materials, the z coordinates of the blade was cut with a flat surface close to the bottom, and a series of corresponding values can be drawn as the follows (table2): Fig.2 The parts of the blades Fig.3 The slice of one part Table2 The calculate data of the blade surface Point Coordinates Z coordinates after slice Discrepancy x y z Nodal values Adjusted 1 249.34 143.97 644.81 644.81 667.86 20.05 2 219.53 179.97 656.07 647.87 670.92 14.85 3 184.23 210.61 667.34 653.39 676.44 9.1 4 144.34 234.97 678.62 661.24 684.29 5.67 5 100.92 252.28 689.91 671.24 694.29 4.38 6 55.18 261.91 701.19 683.14 706.19 5.00 7 8.47 263.47 712.46 696.60 719.65 7.19 8 -37.79 256.79 723.74 711.22 734.27 10.53 9
Acknowledgement The project supported by the National Natural Science Foundation of China (No.50575109).The author thanks YU Shixu, Engineers of Chery Automobile Co., Ltd.
[3] Zhang Wang-nian,Deng Ning and Ju Ying-yan: Journal of Jiujiang UniversityVol.88(2010)No.1, p9-11
Alves: The International Journal of Advanced Manufacturing Technology, Vol.34(2007)No.11-12, p1133-1143
Online since: November 2012
Authors: S. Riyaz Ahmed, Late Ajai Agarwal, Brainerd S.S. Daniel
S.Riyaz Ahmed 1, a, Late Ajai Agarwal 2, b and B.S.S.Daniel 3, c 1EMD Locomotive, 7A Fortuna towers, 10 Rana pratap marg, Lucknow, India. 2Mechanical and Industrial Engineering Department, IIT Roorkee, India. 3 Metallurgical and Material science Department, IIT Roorkee, India.
The chromium–molybdenum series of ferritic steels is an important group of alloys developed for applications as structural materials at elevated temperatures for power generating industries [1].
Singh Raman, Mechanical properties and non destructive evaluation of chromium–molybdenum ferritic steels for steam generator application, International Journal of Pressure Vessels and Piping, Volume 81 (2004) pp.521-534
Branch: Journal of Iron &Steel Instute, London, Volume 209, (1971) pp.546-61
Online since: March 2013
Authors: Da Wei Wang, Yu Xia, Zhong Qing Zhang, Xiao Lian Zhao
The problem relating historical deformation, such as viscoelastic material model and the time effect of inertia (dynamic problems), must use incremental method.
In the loading process, the failure meeting any criteria set, will cause the material damage.
References [1] Ren qing-wen: status quo and problems on safety analysis of high arch dam. journal of hydraulic engineering (In Chinese).
Chinese journal of rock mechanics and engineering(In Chinese).
Beijing science press, China 2005, p. 30-45
Online since: February 2013
Authors: Jin Yi, Guo Jing He, Jie Lu
Due to the poor thermal conductivity of concrete materials, leading to the concrete structure in the solar radiation, the effect of sudden temperature drop, the structure of the surface temperature change, however, the most region of internal structure remains the original state of the temperature, so that the temperature gradient appears.
In domestic, concrete box-girder temperature field experimental the first study was researched by Ministry of Railways academy of sciences southwest.
Fig.3 The finite element model The sensitivity analysis under the overall heating and cooling With reference to the local weather bureau of material, YouXian perennial average temperature is 17.8℃, the highest temperature is 40.5℃, the minimum temperature is 4℃.
Sun Light Thermal difference effect on long-span PC continuous box girder bridge[J].Structural Engineers Vol. 27,No.5.48.Structural Analysis China Journal of Highway and Transport,2007,20( 1) : 62 - 67.
Measurements of thermal gradients and their effects on segmental concrete bridge[J].Journal of Bridge Engineering,2002,7( 3) : 166 - 174
Online since: December 2014
Authors: Lin Song Sun, Yun Peng He
By overloading or reducing material strength, the limit equilibrium state of arch dam foundation system is judged with convergence criterion or abrupt change criterion [2], and multiples of overloading or of material strength reduction is the global safety factor of arch dam foundation system.
Dam concrete and foundation rock are simulated as perfect elasto-plastic material with Drucker-Prager yield criterion.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51279174).
Vol.54, Suppl.1(2011), p.9-17 [3] Yu T T, Ren Q W: Chinese Journal of Rock Mechanics and Engineering, Vol. 26(2007), p.787-794 [4] Ning Y, Xu W Y, ZHENG W T, et al: Chinese Journal of Rock Mechanics and Engineering, Vol.27 (2008), p.1890-1898 [5] E.C.
Online since: July 2011
Authors: Jia Ling Pu, Wen Guang Wang, Wei Min Zhang
A study on the Photolysis Behavior of Photoacid Generators Weimin ZHANG1,a, Wenguang WANG2,b, Jialing PU3,c (Beijing Area Major Lab of Printing & Packaging Material and Technology, Beijing Institute of Graphic Communication, Beijing 102600) zhangweimin@bigc.edu.cn, wangwenguang@bigc.edu.cn, pujialing@bigc.edu.cn Key Words:photoacid generator, photolysis; acid generating efficiency Abstract.
If added the acid proliferation generator (APG) in the imaging system, it was can be get more acid production efficiency, and higher chemical amplified, high-sensitivity imaging material system.
Therefore, it is important to quantitatively evaluate the acid yield of PAG and provide decisive information to the design of PAG and the related material system.
Journal of Photochemistry and Photobiology A: Chemistry 1995, 86(02): 149-154
Journal of Photopolymer Science and Technology.2000, 13 (2), 187-190
Online since: November 2011
Authors: Lian Jin Weng, Xin Yang, Yuan Yuan Han, Di Geng
All solvents used were of analytical grade. 2.2 Plant materials The whole plants of Euphorbia helioscopia L. were collected in Sichuan, 2006.
The plant material was identified by Prof.
β 1.67,1H,m 3 3.49,1H,br,d,3.4 75.6 H-2ax,5 H-1,5,18,19 H-2ax,17 4 37.8 H-5,17,18 5 1.67,1H,dd,2.9,11.2 48.4 H-3, 6ax H-3, 1,6ax,6eq, 7eq,9,17,18,20 H-2, 9, 11eq 6 ax 1.44,1H,dd,4.1,12.9 23.4 H-5, 6eq,7eq, H-5,7ax H-6eq,17, 18,20 eq 1.72,1H,m H-6ax,7ax,7eq, H-6ax,7eq,7ax,18 7 ax 2.24,dt,5.26,13.1 37.1 H-6ax, H-5,6ax,14 H-7eq eq 2.52,1H,ddd,2.3,3.8,11.1 H-6ax,14 H-7ax 8 152.0 H-6eq,7ax,9,11eq 9 2.31,1H,d,8.5 51.6 H-11ax, H-1,11β,11α, 14,20 H-5,11ax 10 41.3 H-1,2ax,5,6ax,6eq,9,11α,11β,20 11 eq 2.59,1H,dd,6.3,13.6 27.5 H-11ax,12 H-9,12 H-11ax,20 ax 1.52,1H,m H-9,11eq,12 H-9,11eq 12 4.88,1H,dd,5.6,13.1 76.0 H-11ax,11eq,19 H-9,11β,11α H-20 13 156.1 H-11α,11β,12,14,19 14 6.28,1H,s 114.1 H-7eq,19 H-7eq,7ax,9,19 15 116.4 H-12,14,19 16 175.3 H-19 17 0.89,3H,s 28.7 H-5,17 H-3,5,6eq 18 1.00,3H,s 22.2 H-5,18 H-2ax,3,6ax 19 1.84,3H,d,0.85 8.3 H-14,12 20 0.95,3H,s 16.7 H-5,9 H-2ax,6ax,11eq,12 Acknowledgment The authors gratefully acknowledge the support by the Science
Journal of Natural Products, Vol. 60 (1997) 331
Journal of Natural Products, Vol. 59 (1996), 733