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OPTIMIZATION OF STEEL LATTICE TRUSSES CONSIDERING MEMBERS STABILITY Jiejiang Zhu, Guobao Zhao, Yuming Sun (Department of Civil Engineering, Shanghai University, Shanghai200072, China) KEYWORDS: sequence linear programming; affine-scaling dual algorithm; steel wire frames; optimization ABSTRACT: This paper extends the optimization model of space truss finite element method to planar steel lattice truss structures under multiple constraints involved with the strength and the stability of members as well as the mid span deflection based on sequential linear programming (SLP) and affine-scale dual algorithm with the size of members as the optimization variables and the minimum weight as the optimization objective.
Currently, the optimization of lattice and truss structures can be divided into two parts: optimization criteria method based on engineering practical experience and mechanical concept; mathematical programming based on operational research.
The problem of sequence linear programming method [J]. engineering mechanics, optimization of truss structure based on the SAND formula 2012, 29 (3): 21 - 26(in chinese) [5] Zhao Guobao, Zhu Jiejiang, Yang Xiao.

Huh 3, c 1 Centre for Advanced Materials Technology, School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, NSW 2006, Australia 2 School of Civil & Environmental Engineering, University of New South Wales, NSW 2052, Australia 3 Dept. of Mechanical Eng., Korea Advanced Institute of Science and Technology, Science Town, Daejeon 305-701, Korea a Chunhui.Yang@aeromech.usyd.edu.au, bsarahyxzhang@unsw.edu.au, chhuh@kaist.ac.kr Keywords: Bi-material crack, Plane elasticity, Hybrid finite element method, Stress intensity factors.
Lasry: International Journal of Numerical Methods in Engineering Vol. 7 (1973), p. 297

Lu1,a and Feng-Tsai Lin2,b 1Department of Civil Engineering, Chung Hua University No. 707, Sec. 2, WuFu Rd., Hsinchu 30012, Taiwan ROC 2Department of Naval Architecture and Ocean Engineering, National Kaohsiung Marine University No. 142, Haijhuan Rd., Kaohsiung 80543, Taiwan ROC acclu@chu.edu.tw, bftlin@webmail.nkmu.edu.tw Keywords: Line heat source, Fluid line sink, Closed-form solution, Half space.
Chau: Journal of Engineering Mechanics ASCE Vol. 116 (1990), p. 1176 [13] J.

The orthogonal test and optimal decision for the development of new backfill cementing materials based on the rod milling sand Maohui Li1,2,a Zhiqiang Yang2,3,b Qian Gao 1,2,c Youtuan Wang 1,2,d 1School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China 2Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines, USTB, Beijing 10083, China 3Jinchuan Group Co., Ltd., Jinchang, Gansu 737100, China almnlmb@126.com, bYZQ@JNMC.com, cgaoqian@ces.ustb.edu.cn, d151450324@qq.com Keywords: new backfill cementing materials; rod milling sand; optimization algorithm; JinChuan mine Abstract: The experiment uses lime, desulfurization ash, slag and other solid wastes with mirabilite and NaOH as the admixture for Jinchuan mine rod milling sand to get a new backfill cementing materials that can replace the cement materials.
Chinese Journal of Rock Mechanics and Engineering, 2013, 31 (supp 1): 2906-2911 [5] Lu Dong, Qian Gao, Shiqing Nan, et al.
Electric Power Science and Engineering, 2011, 27(9): 31-34 [8] Bin Yang, Lichun Kuang, Zhongchun Sun et al.

Liew1, c 1Civil Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia aamilawa@petronas.com.my, b nakailun@gmail.com, cshahir_liew@petronas.com.my Keywords: Decommissioning; criteria; decision making tool; Relative Importance Index.
Na, Decommissioning of Offshore Platform: A Sustainable Framework, in IEEE Colloquium on Humanities, Science & Engineering Research (CHUSER), Sabah, Malaysia, 2012
Ozdemir, Quantification of Delay Factors Using Relative Importance Index Method for Construction Projects in Turkey, American Society of Civil Engineers, 2013

Analysis on Life Cycle CO2 Emission of Aerated Concrete Production in China Minghui Fang1,a, Zhihong Wang1,b, Feifei Shi1,c , Boxue Sun1,d , Mingnan1,e CUI Suping Zhao 1, f and Xiance Meng1, 2, g 1School of Materials Science and Engineering, Beijing University of Technology, 100 ping le yuan, Chaoyang district, Beijing, 100124, China 2 China Development Strategy Institute for Building Materials Industry, Beijing, 100035, China afangminghui111@163.com, bwangzhihong@bjut.edu.cn, cshifeifei789@163.com, dsunboxuexx@163.com, emingnan1987@163.com,fcuisuping@bjut.edu.cn, gmengxiance323@emails.bjut.edu.cn Keywords: Wall materials, Aerated concrete, Life cycle assessment, Carbon dioxide emission.
Journal of Jilin Institute of Architecture & Civil Engineering 2009
Progress in Materials Science and Engineering 2006

Study of the Torsional Behavior of Aluminum Foam-Filled Galvanized Steel Tubes after High Temperature Wang Zhanguang1,a*, Wang Yang1,b 1Architectural and Civil Engineering Institute, Kaili University, Kaili 556011, China awzg3262396@163.com, b280244390@qq.com Keywords: Galvanized steel tube, Aluminum foam, Torsional load capacity, High temperature, Strength reduction factor Abstract.
Galvanized steel tube has a strong corrosion resistance, and is widely used in many fields such as fire engineering, gas transportation, petroleum processing, water conservancy, and engineering and residential constructions.

Influence of Splitting Load and Polypropylene Fiber on Permeability of Chloride Ion in Concrete Sumei Liu1, a, Xiangjie Liu1,b* andLihua Xu 1,c 1School of civil engineering, Wuhan University, Wuhan, Hubei, China 430072 acdcyk0124@163.com, bsainters@126.com, cxulihuad@163.com *Corresponding author Keywords: Permeability of chloride ion, Polypropylene fiber, Splitting load, Fiber volume fraction, Fiber length, Mass ratio of long and short fiber.
By conducting corrosion test of plain concrete and polypropylene fiber reinforced concrete, the paper studied the influence of different fiber mix proportion and splitting load on permeability of chloride ion, and deduced the relational expression between deterioration of concrete and permeability of chloride ion, proposing optimal mix proportion of polypropylene fiber reinforced concrete and engineering measures to enhance durability of structure.
It is suggested that such mix proportion can be used in actual engineering.

Effects of Water-Cement Ratio on Concrete Sulfate Corrosion Rate Jian-Min DU a*, Xiao-Li HANb, Zai-Ting LIc, Guo LId, Yong-Sheng JI e School of Mechanics and Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China adjm1975@cumt.edu.cn, b214842254@qq.com, c649413207@qq.com, dguoli@cumt.edu.cn, ejysbh@126.com Keywords: water-cement ratio; sulfate corrosion; concrete; corrosion thickness.
Therefore, decreasing appropriately the w/c ratio can improve concrete permeability in engineering practice, thereby enhancing the resistance ability to sulfate corrosion.
Wang, etc., Overview on sulfate chemical attack of concrete, Special concrete and asphalt concrete technology and engineering applications (2012)131-135.

Experimental Study on Behavior of Shear Walls Built with Precast Two-way Hollow Slabs for Different Axial-load Ratios Jiliang Liu 1, a, Huichen Cui1, b, Mingjin Chu1, c, Jianqun Hou2,d 1School of Civil Engineering Yantai University, Yantai 264005, China 2Architectural Design and Research Institute of Tsinghua University Co.Ltd, Beijing 100084, China alianglju@163.com, bchcky@sina.com, chousind@126.com dhjq@tsinghua.edu.cn Key words: housing industrialization, shear wall, precast two-way hollow slab, vertical crack, shear behavior Abstract.
(in Chinese) [3] Li Fan, Xinlin Lv and Bin Zhao: Structural Engineers, 2007, 23(4):90-97.
[5] Min Wang, Wanlin Cao, Jianwei Zhang e.g: World Earthquake Engineering, 2008.24(2): 32-36.