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Numerical Analysis of Post-Tensioned Coupled Wall Xiaoning, Cai 1, a, Shaoping, Meng 2, b, Jiajia, Chen 3, c, Weiwei, Sun 4, d 1, 2,3Key laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China; 4Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, China afenyun0801@163.com, bmsp1960@sina.com, cas051041@126.com, dsww717@163.com Keywords: Post Tensioned; Coupled Wall; Low-Cyclic Loading Test; Elasto-Plastic Performance; Numerical Analysis Abstract: Based on OpenSEES, nonlinear beam-column element based on fiber model and considered nonlinear shear deformation was used to simulate wall limb; zero-length elements were used to simulate action of prestressing tendon and connecting reinforcement in the interface between coupling beam and wall limb; the hysteretic models of the zero-length elements were established by programming.
References [1] Priestley M J N: PCI Journal Vol.42(2000), p.22 [2] Kurama, Y., Pessiki, S., Sause, R., etc: PCI Journal Vol.44(1999), p.72 [3] Qiang Shen, Yahya C.Kurama, Brad, D: Journal of Structural Engineering Vol.132 (2006), p.1030 [4] Brad D.Weldon, Yahya C.kurama: Journal of structural Engineering Vol.133 (2007), p.1571 [5] McKenna F, Fenves G L.
Journal of Structural Engineering Vol.132 (2006), p.1030 [8] Kent D C, Park R: Journal of the structural Division Vol.97 (1971), p.1969 [9] Stefano Pampanin, M.J.
Sritharan: Journal of Earthquake Engineering Vol.5 (2001), p.329 [10] Magdy EI-Sheikh, Stephen Pessiki, Richard Sause, etc: ACI Structural Journal Vol.97 (2000), p.122 [11] Cheok G, Stone W.Performance of 1/3-scale model precast concrete beam-column connection subjected to cyclic inelastic loads-report NO4[R].NISTIT5436, NIST, Gaithersburg, MD, 1994 [12] Sun Weiwei, Meng Shaoping: Journal of Southeast University (In Chinese) Vol.37 (2007), p.190 [13] ACI Innovation Task Group 1 and Collaborators.

Relationship between Impact Energy and Flexural Toughness Energy of Steel Fiber Reinforced Lightweight Aggregate Concrete Wang Haitao1,2, a, Jia Jinqing1, b 1State key laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, China 2School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian, China; awht_dalian@163.com, bkeyknown@163.net Keywords: Steel fiber reinforced lightweight aggregate concrete (SFLWC), Impact energy, Flexural Toughness Energy Abstract.
This helps the engineers in designing and construction of structures where impact energy absorption is especially important.
Engineering Structures, 18(11) (1996), p. 845-849
Engineering Structures, 18(11) (1996), p. 831-836

Discussions on zonal disintegration around tunnel in deep rock mass Peng Jia1, a,Tianhong Yang1,b, Chunming Zhang1,c 1School of Resources and Civil Engineering, Northeastern University, Shenyang, 110004, China ajiapeng@mail.neu.edu.cn, byangtianhong@mail.neu.edu.cn, czhangchunming@mail.neu.edu.cn Key words: zonal disintegration; heterogeneity; residual strength; deep rock mass; numerical simulation Abstract.
Fig. 4 Accumulative Acoustic emission (AE) of models with different homogeneity index Effect of multi-axial stress on zonal disintegration In deep hard rock engineering, the three principle stresses are commonly not equal.
H Qian et al.: Chinese Journal of Rock Mechanics and Engineering.
Chen et al.: Chinese Journal of Rock Mechanics and Engineering.
Lin et al.: Chinese Journal of Rock Mechanics and Engineering.

Sewage Treatment of Post-Denitrification Oxic/Anoxic Biological Filter Wei Li 1,2,a, Xiaomin Hu 1,b, Wei Wei3,c and Tieheng Sun 1 1Mailbox 265, College of Resources and Civil Engineering, Northeastern University, Heping Region, Shenyang 110000, Liaoning Province, China 2School of management, Shenyang jianzhu University, Hunnan New Region, Shenyang 110000, Liaoning Province, China 3Municipal & Environmental Engineering College, Shenyang jianzhu University, Hunnan New Region, Shenyang 110000, Liaoning Province, China aliweilengjinyue@163.com, b huxiaomin@mail.neu.edu.cn, chj_ww@sjzu.edu.cn Key words: biological filter, post-denitrification, external carbon source, removal rate.
Theory and engineering application of BAF[J].
Security and Environmental Engineering. 11(1) (2004) 15-17
Microorganwasm and Water Treatment Engineering.

Influencing Factors Analysis for Failure Risk of Upstream Revetment of Existing Levees Yanhong Gaoa and Junzhi Zhangb* College of architecture and civil engineering, Zhejiang University of Technology, Hangzhou, 310014, P.R.
References [1] Can Elmar Balas and Lale Balas: Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE, Vol.128 (5), 216-223 (2002)
Fan: Journal of Hydraulic Engineering, Vol.36(8), 994-999, 1006 (2005).
K.: Reliability Engineering and System Safety, 74, 337-344 (2001)
J.: Reliability Engineering and System Safety, 71, 141-150 (1998)

Zhao Yangsheng （2008）[3] described in detail the science and technology issues of multi-field coupling in porous media in the field of civil engineering, environmental engineering, resource and energy development projects, and then discussed the scientific content of multi-field coupling in porous media and its coupling theory include solid-stress field, seepage field, temperature field and concentration field in four fields of the coupling effect, and the chemical reaction of dissolution.
Multi-field Coupling Theory of Porous Media and Its Applications to Resources and Energy Engineering[J].
Chinese Journal of Rock Mechanics and Engineering.2008,27（7）: 1321-1328.
Theoretical study of immiscible saturated two phase flow in nonlinear porous media and applications to petroleum engineering[D].

Control Standard of Ground Surface Settlement Induced by Running Tunnel Construction in Beijing Subway Zhang Chengping1, a, Li Limin2, b, Li He1, c, Wang Jianchen1, d 1Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China 2School of Civil Engineering, Hunan City University, Hunan, Yiyang, 413000, China azcpmail@foxmail.com, bli-li-min@126.com, c10121322@bjtu.edu.cn, d10115277@bjtu.edu.cn Keywords: Ground surface settlement, control standard, subway running tunnel construction, statistical analysis, numerical simulation Abstract.
So how to set a rational control standard of ground surface settlement during subway construction, which can ensure the security and economic of engineering construction, is an urgent question facing us.
Journal of Geotechnical Engineering 115 (1), 1-21.
Journal of Construction Engineering and Management 134 (1), 72-81.

The Research and Detection Practice of Geological Radar Technology Song Jin 1, a 1 School of Geosciences and info-Physics, Central South University ,ChangSha, China,410083; Chongqing Research Institute of China Coal Technology &Engineering Group Corporation, ChongQing, China, 400039 asongjin33@163.com Keywords: GPR, electromagnetic pulse, permittivity, reflectance, Karst,fault.
With the development of technology and social needs, Radar is gradually applied for civil use.
GPR is widely used in engineering geological survey, engineering quality inspection, mineral exploration, hydrology and ecological environment investigation, geological hazard detection, archaeological exploration, buried objects detection and many other fields, which has been an important technical means in the shallow geophysical exploration.
Using GPR can do a wide range of continuous scanning for underground target,and provide visual and continuous profile and planar graph.This can compensate the shortage of general Geological survey and drilling,benefit to engineering geology and disaster management.
References [1] Lufei Ding, Fulu Geng:Radar Principle,University of electronic Science and Technology Press,in chinese,1995 [2] Daxin Li:Methods and Application of GPR,Geological publishing house,in chinese,1994 [3] Cizhang Feng, Xikui Ma:Introduction to engineering electromagnetic fields,Higher Education Press,in chinese,2000 [4] Qianwei Dai, Deshan Feng:Application of GPR to karst cave detection at highway bridge location].Site investigation science and technology,in chinese,2002.24 [5] Bangdong Xia:General Geology[M].BeiJing, Geological publishing house,in chinese,1990

Influence of hybrid fibers on flexural properties of Ultra High Toughness Cementitous Composites with nano-SiO2 Xiang Gaoa, Qinghua Lib,* and Shilang Xuc Institute of Advanced Engineering Structures and Materials, Zhejiang University, 310058, Hangzhou, China atmgcgaoxiang@zju.edu.cn, b,*liqinghua@zju.edu.cn (corresponding author), cslxu@zju.edu.cn Keywords: Nano-SiO2, Hybrid fibers, UHTCC, Flexural properties Abstract.
Nanotechnology is the extremely hot research field in civil engineering.
References [1] Li VC, and Leung CKY, Steady state and multiple cracking of short random fiber composites, Journal of Engineering Mechanics, J.
[2] Shilang Xu, Qinghua Li, Basic Application of ultra high toughness cementitious composites in advanced engineering structures, Science Press, Beijing, 2010
[9] S.Ahmed, Analytical model for tensile strain hardening and multiple cracking behavior of hybrid fiber-engineered cementitious composites, J.Mater.Civ.Eng. 19(2007) 527-539

Analysis on the welding thermal field and residual stress of thick plate Jiuhong Jiang1, a, Qiang Wang2, b and Wen Lv3, c 1,2School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China 3Business College of Hubei University of Technology, Wuhan 430079, China awdm8518@126.com, bwangqianghbut@126.com, csh8707@sohu.com Keywords: Thick Plate, Welding, FEM, Thermal Field, Residual Stress.
Acknowledgments The authors would like to gratefully acknowledge this support by The Open Fund of Research Center of Bridge Safety Monitoring Technology and Equipment Engineering Technology of Hubei province (QLZX2014017).
Chinese Journal of Mechanical Engineering Vol. 31(2005), p. 26-47.
Materials Science and Engineering A, 2008, 497(1/2); 37-43.
Materials Science and Engineering A, 2012, 534; 663-672