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Study on the Method of the Damage Identification For Frame Structure Yang Youfa1, 2,a, and Li Shuai2,b , and Ling Ling2,c 1 Key Lab of Education Ministry for Construction and New Technology of Mountain Cities, Chongqing University, Chongqing 400045,China 2 College of Civil Engineering, Chongqing University, Chongqing 400045,China ayfyang6296@163.com, bcqlishuai73@163.com, cyfyang@cqu.edu.cn Keywords: frame structure; damage identification; first order iterative algorithm; mixed iterative algorithm; damage identification using static and dynamic data.
Introduction Many factors may badly affect the structural safety, applicability and durability in civil engineering, so damage in structural members should be found and restored in time to guarantee the secure of structure.
In order to increase the identification precision of the result in the practical engineering application, the analytic solutions of first order sensitivity equations must be modified by self iteration.
Acknowledgements This work was financially supported by Chongqing municipal Commission of urban-rural development,Grant NO. (2011-2-86, 2011-2-80) References [1] ZHAO Zhonghua: Research on structural damage identification based on improved sensitivity method for modal parameters (Chongqing University 2010) [2] ZHANG Dewen, WEI Fuxuan: Model modification and damage diagnosis (Science Press, Beijing 1999) [3] R.L.Fox and M.P.Kapoor: Rates of Change of Eigenvalues and Eigenvectors, AIAA Journal, Vol. 12(1988),p.42-53 [4] YANG Youfa, LIANG Wenguang: Improved directly analytical method for damage identification of frame structures, Earthquake engineering and engineering vibration, Vol. 30(2010) ,p. 80-86 [5] Coleman T F,Li Y: An interior trust region apporoach for nonlinear minimization subject to bounds, SIAM Journal on Optimization, Vol. 16(2006),p.418-445 [6] Coleman T F,Li Y: On the convergence of reflective Nowton methods for large-scale nonlinea minimization subject to bounds,

Earthquake Action of Cold Storage Structure Jimei Zhang1, a, Hongbo Dong2,b 1School of Civil Engineering and Architecture, Hulunbuir College,Hailar, Inner Mongolia, 021008，China 2Heilongjiang Reclamation land School of Technology,luobei County,Heilongjiang,154211， China azjmcn@126.com,bhbdongxy@126.com Keywords: cold storage,earthquake action,comparison Abstract.
Engineering situation Seismic precautionary intensity is seven degrees.The peak ground acceleration is 0.lg.Seismic influence coefficient is =0.08.Characteristic period of response spectrum of ground motion is Tg=0.35s.Site classification is II.Single-storey multi-span reinforced concrete frame building with cast-in-situ floor is used.Brick walls is used in exterior wall,brick and polyurethane sandwich composite wall is used in interior wall.The reduced coefficient of cycle is 0.9,and the damping ratio of structure is =0.05.Seismic grade on frame is three-level.Numbers and materials and floor height of each component are shown in Table 1.Elevation drawing and component layout are shown in Fig.1.Plan view is shown in Fig.2 Table 1 Component calculation parameter of each storey Floor number Beam number ( Concrete ) Column number ( Concrete ) Floor height (m) Accumulative height (m) 1 95(30) 134(30) 6.000 6.000 2 51(30) 129(30) 1.900 7.900 3 758(30
References [1]Code for seismic design of buildings(GB50011-2010)Beijing:China Construction Industry Press, 2010:9, 31, 39(In Chinese) [2]Hu yuxian.Earthquake engineering science .Beijing: China Earthquake Press，1988(In Chinese) [3]Yang pu ,Li yingmin ,Lai ming,A new method for selecting inputting waves for time-history analysis.Civil engineering journal 2000，33(6):33～37(In Chinese) [4]Xie lili,zhai changhai Study on the severest real ground motion for seismic design and analysis.Acta Seismologica Sinica.2000，33(6):33～37(In Chinese) [5]Gong sili,Notebook for seismic design of buildings.Beijing:China Construction Industry Press, 2002:211～217,176—194(In Chinese) [6]Group of Hubei industrial architecture design institute《Design for Cold Store》Design for cold store.
Beijing: China Construction Industry Press，1980:114～121(In Chinese) [7]Shen jumin,Zhou xiyuan,Gao xiaowang ect.Seismic engineering.Beijing:China Construction Industry Press，2000:386～402 (In Chinese)

Quasi-steady Marching-on in Time Approximation Technique of Numerical Simulation of Wind Pressures on Building Zhixiang Yu1a, Yanjun Yan2b , Hao Wu1c 1 School of Civil Engineering Southwest Jiaotong University ,Chengdu, China 2 College of Civil Engineering Tongji University ,Shanghai, China ayzxzrq@126.com, byyj07011100@yahoo.com.cn, c Yong_zhiwu @163.com Keywords: Wind load,Quasi-steady Approximation, CFD, Murakami model, Numerical simulation Abstract.
Due to very large computational requirements, the application of DNS [6-7] with the highest theoretically precision is seldom reported in wind engineering.
(4) Example testing of Murakami-3D cubic proves that the precision of QSMA meet the requirement in practical engineering.
First International Symposium on Computational Wind Engineering ,TOKYO,1992

Structural Lightweight Aggregate Concrete by Incorporating Solid Wastes as Coarse Lightweight Aggregate Muhammad Aslam1,a, Payam Shafigh1,b and Mohd Zamin Jumaat1, c * 1Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia a aslam_bhanbhro13@yahoo.com, b pshafigh@um.edu.my, czamin@um.edu.my Keywords: Lightweight aggregate, Lightweight aggregate concrete, Oil palm shell, Clinker, Compressive strength, Water absorption, Efficiency factor.
Introduction Structural concrete is the most widely used construction material in all types of civil engineering structures.
In: ASCE, 6th international engineering and construction conference (IECC’6), Cairo, Egypt;, 2010
Key Engineering Materials. 594(2014) 498-502

Effectiveness and mechanism of the in situ formed iron hydroxide (FeOxHy) towards the removal of phosphate by coagulation and adsorption 　Sun Lihua1*　 Qi Xiaolu2 Zhang Yajun1 1Key Laboratory of Urban Stormwater System & Water Environment, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China； 1E-mail: sunlihuashd@163.com, zhangyajun@bucea.edu.cn; *Corresponding author, E-mail: sunlihuashd@163.com;2E-mail: qixiaolu@126.com Keywords: phosphate; coagulation; adsorption; in situ FeOxHy; iron phosphate complexes Abstract: This study prepares the in situ formed iron hydroxide (In situ FeOxHy) by the interactions between Fe3+ and OH- at different molar ratios of 1:0,1:1,1:2,and 1:3, and investigates the performance and mechanism involved in the removal of phosphate.
References [1] Xie J.L., Liu E.Q., Zhao X., et al.Effects of different forms of ferric salt on phosphorus removal.Chinese Journal of Environmental Engineering, 2012, 6（10）：3429-3432（in Chinese） [2] de-Bashan Luz E, Bashan Yoav.Recent advances in removing phosphorus from wastewater and its future use as fertilizer.Water Research, 2004, 38（19）：4222-4246 [3] Yao H., Peng J.P., Yu Q., et al.Preparation and phosphorous removal performance of FeOOH coated diatomite.Inorganic Chemicals Industry, 2011, 43（5）：24-27（in Chinese） [4] State Environmental Protection Administration.Water and wastewater monitoring and analysis methods（Ⅳ）.Beijing：China Environmental Science Press, 2002（in Chinese） [5] Xing W., Huang W.M., Li D.H., et al.
Ferric salts for phosphorus removal and flocculants .Water　&　Wastewater Engineering, 2006, 32（2）：88-91（in Chinese） [6] Zhang Z.B., Zhou F., Du M.C., et al.Optimal Selection of Chemicals for Simultaneous Chemical Phosphorus Removal.China Wate & Wastewater, 2010, 26（11）：104-106（in Chinese）

However, a lot of engineering practices indicate that the effective prestress of discontinuous curving duct is very different from that in continuous curving duct.
For actual engineering structure, the value of the prestress loss caused by frictional resistance calculated by the current formula, which regards the stress distribution as uniform distribution, is still less than the real one.
In this way, Eq.13 exactly explained the excessive frictional resistance loss of prestress in actual engineering structure.
The 4th International Symposium on Lifetime Engineering of Civil Infrastructure.
Civil Engineering and Management Journal (ISSN2095-0895/CN42-1816/TU),2011.28(4):6-11(in Chinese)

Experimental Study of the Recycled Plastic Aggregate Lightweight Composites Based on Different Kinds of Binder Valéria Gregorová1,a*, Zuzana Štefunková2,b and Miriam Ledererová3,c 1,2,3Department of Material Engineering, Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Radlinského 11, 810 05 Bratislava, Slovakia avaleria.gregorova@stuba.sk, bzuzana.stefunkova@stuba.sk, cmiriam.ledererova@stuba.sk Keywords: cement, organic-based adhesive, lightweight composite, waste, plastic, recycled, polystyrene, polyurethane foam, polypropylene, EVA Abstract.
(eds) Sustainable Engineering.
Lecture Notes in Civil Engineering, Vol 30.
In: International Journal of Innovative Technology and Exploring Engineering (IJITEE) Vol. 8 (10), (2019) pp. 1427-1430

Variant of the Mathematical Theory of Non-Thin Multilayer Nonlinearly Elastic Plates of Symmetric Structures Zelensky Аnatoly 1,a* 1Prydniprovska State Academy of Civil Engineering and Architecture, Oleg Petrov Architect Street, 24 a, 49600, Dnipro, Ukraine aa.zelensky@ukr.net Keywords: non-thin multilayer nonlinearly elastic plate of symmetrical structure, mathematical theory, three-dimensional problem, Legendre polynomials, Reissner's variational principle, system of differential equations, method, solutions.
Structural Engineering and Mechanics. 61(1) (2017) 49–63
Lizunov, Nonclassical theory of shells and its application to solving engineering problems, Publishing house Lvov.
Zelensky, Mathematical Theory of Transversally Isotropic Shells of Arbitrary Thickness at Static Load in: Actual problems of engineering mechanics, MSV 968, Switzerland, Edited by M.
Theoretical Foundations in Civil Engineering. 11 (2003) 121–126

Prepartion and atypical mechianical performance of epoxy asphalt cement mortars composite material for high speed railway Xinglong Fang 1, a, Zhiming Chen *1, b, Zhen Jiao 1, c, Ganghua Pan 2, d, Wenping Zhou 1, e, Kai Feng 1,f 1.School of Chemistry & Chemical Engineering Of Southeast University, Nanjing ,China,211189, 2.School of Material Science & Engineering Of Southeast University, Nanjing ,China,211189 a markfang2050@sina.com, b chenzm@seu.edu.cn , c 101010972@seu.edu.cn, d ghpan@seu.edu.cn, e zhou851005@126.com, fbigfengkai@126.com Key words:slab ballastless track; epoxy asphalt cement mortar; water cement ratio; cationic surfactant ;asphalt emulsion Abstract: Cement asphalt mortar is a key part of flexible adjusting layer in slab ballastless  track structure.
The CAM materials have been put into domestic engineering applications in a number of lines [10],and there also similar products in China and foreign [11-13].
The authors want to thank Ningwu Chemical Co., Ltd.. and Suzhou high-speed Railway track laboratory of civil engineering of Southeast University, and professor Jiwen Zhang in the materials preparation and performance testing for their support.
[J] Chemical Engineering Jounal, Vol.164,230-237(2010)
[J] Mater Civil Eng . 15(1):54–59(2003).

Cracking simulation of asphalt mixtures using a finite element micromechanical model Jinghui Liu1,a 1College of Civil Engineering and architecture, China Three Gorges University, YiChang, China ayangjianxue33@126.com Keywords: CZM(Cohesive Zone Models), cracking, Asphalt Mixture, DIP(Digital Image Processing) technique Abstract.
Digital image based numerical modeling method for heterogeneous geomaterials[J].Chinese Journal of Geotechnical Engineering, 2005, 27(8): 956–964 (In Chinese)
Journal of Materials in Civil Engineering, 2002, 14(5):374-383
Journal of Engineering Mechanics, ASCE, 131(7), 2005, pp: 668-677
[8] Shet C. and Chandra N., Analysis of Energy Balance when Using Cohesive Zone Models to Simulate fracture processes[J], ASME Journal of Engineering Material and Technology, 2002, Vol. 124: 440-450.