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The multi-objective optimization under random loads Xianjie Wang1, a, Xun`an Zhang 1,b and Yeda Lian 1,c 1School of mechanics & civil. and architecture engineering, northwestern polytechnical university, xian, 710129 a xianjiewang@mail.nwpu.edu.cn, b jiaping@nwpu.edu.cn, c lianyeda@126. com Keywords: The mega-sub controlled structural systems, Multi-objective optimization, Random loads, Genetic algorithm, Extreme value distribution.
Study on a new controlled mega-substructure systems subjected to non-stationary se ismic loads [J]. earthquake engineering and engineering vibration 2007, 23(2), 316-320 [3] Liu Rui.
The extreme value probability density function based method for dynamic reliability assessment of stochastic structures [J]. earthquake engineering and engineering vibration, 2004, 24(6), 39-44

Pore Water Pressure Variation Characteristics Analysis of Soft Soil Foundation Disposed by Dynamic Drainage Consolidation Method Guihua yang, Jinliang Han Civil Engineering Department, North China Institute of Aerospace Engineering, Langfang, Hebei 065000, China Key words: Dynamic drainage consolidation method, Pore water pressure, Sand bag well, Reinforced depth Abstract.
Main engineering properties are described as follows
Calculating parameters of soil layer are obtained from the engineering practical test of soft foundation, the lack data of test is derived from associated engineering .Detail physical and mechanical parameters are in Table 2.

., Civil Engineering Dept., Isfahan University of Technology, Iranb aa.jouzdani@cv.iut.ac.ir, bakabiri@cc.iut.ac.ir Key words: Dam Break, Hydrodynamic Modeling, MIKE11, MIKE21.
Introduction The increasing demand to healthy water has led to rapid progress in the field of dam engineering and construction of different dams all over the world.
Although the structural analysis and design of dams have been improved significantly in recent years, but dam break is an inescapable phenomenon in dam engineering proficiency.
Wardlaw: Two-Dimensional Modeling Of Dam Reach Flooding., Us-China Workshop On Advanced Computational Modeling In Hydro Science and Engineering, Oxford, Mississippi, USA. (2007) [3] F.
Mac Millian Publishing Co., New York. (1966) [4] DHI Software: MIKE11, a Modeling System for Rivers and Channels, User Guide, Denmark. (2007) [5] DHI Software: Flow Model, Hydrodynamic Module, User Guide, Denmark. (2007) [6] Dezab consulting engineers: Hydrology studies determining river bed of the Zayandeh Rood River, Isfahan. (2004)

Analysis of the mechanical properties of cement silo structure Hong Gan1, a, Yizhen Yang 2,b 1 The President′s office, Anhui Polytechnic University, 8 Beijing Road in Wuhu, China 241000 2 College of Civil Engineering and Architecture, Anhui Polytechnic University, 8 Beijing Road in Wuhu, China 241000 agh@ahpu.edu.cn, byyiz2006@163.com Keywords: Cement silo, displacement, stress Abstract.
Introduction In cement silo of engineering design, usually used PKPM software to for simulation calculation, but due to cement silo is special of tube warehouse structure, PKPM under construction die calculation analysis is large of errors, especially on large range opening department and pour cone and library wall contact department, stress concentrated phenomenon serious, PKPM calculation cannot reflected in the engineering is through experience and industry specification forced requirements for design [1], such on will makes design relative fuzzy, security and economic sexual have not to guarantees.
Fig.7 Seek to the Y direction Fig.8 Seek to the Z direction From X direction and Y direction Shang of stress figure Shang, we can seen, its maximum pressure stress for 0.182E+08pa that 18.2Mpa, over C30 concrete of compressive strength design value, maximum pull stress 0.147E+08pa that 14.7Mpa, over C30 concrete of tensile strength design value, so in theoretically concrete structure has destruction, but actual engineering in the we through enjoy reinforced, let reinforced bear part of force, and reduces concrete of destruction.
Conclusions Can be seen from analysis of structures under full load conditions, concrete structure has on the deformation and stress damage occurs, but in practical engineering, we use reinforced by increasing the support structures, to reduce the impact of local stress brought about by the deformation and structure.

Free vibration analysis and damage identification of beam-like structures containing a crack based on the extended finite element method Xiaodong Zhang 1,a 1 State Key Laboratory of Bridge engineering Structural Dynamics, China Merchants Chongqing Communications Research & Design Institute Co., Ltd., Chongqing, China P.R. 400067 azhangxd00@yahoo.com.cn Key words: the extended finite element method(XFEM); free vibration; natural frequency; damage identification; crack Abstract: A scheme is presented for the free vibration analysis of beam-like structures containing a crack with the extended finite element method(XFEM).
A new method for the damage identification of a cantilever beam containing a crack is then presented. 1 Introduction Beams are common structures used to carry and transfer high loads in civil engineering structures and cracks are the main cause of structure failure.
It is of great engineering significance to develop nondestructive technique to detect the cracks in beam-like structures.
International Journal for Numerical Methods in Engineering.Vol. 46(1999), 131-150
Modelling and Simulation in Materials Science and Engineering, Vol.17(2009), p. 043001 [5] Goldberg,D.E..

PVDF Piezoelectric Film Accelerometer For Low Frequency and Ultra-low Frequency Zhou Wan 1, a , Tao Ji 2,b , Yuanyuan Shang 1 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650051, China 2Institute of mechanical and electrical information, xi'an, 710065, China aynkgwz@yahoo.com.cn, b243260741@qq.com Key words: Low-frequency vibration, Accelerometer, PVDF piezoelectricity film, new pattern structure.
The film is a type of pressure-sensitive components which can move at the direction that vatic its flex portion, in addition, in engineering it is usually used as seal and isolation components etc, and it have a broad application prospects.
Figure 2 The block diagram of accelerometer Figure 3 The schematic of accelerometer sensitive element Sensor system components and test The testing methods of accelerometer have absolute calibration method and relative calibration method (comparison), while the relative calibration method is the most commonly used calibration method in engineering, and also a very simple method.
Journal of Structural Engineering, 2003, 129(2) [5] Billing J R.
Canadian Journal of Civil Engineering, 1984(11)；833—843 [6] Wang Xiuyan.

Research on NOx concentration field distribution of a turbo-jet engine emissions Wang Qi1,2,a ,Ma Yunfeng2,b* and Hu Xiaomin1,a 1Northeastern university College of Resources and Civil Engineering Shenyang,110819 2Shenyang Aerospace University The College of Power and Energy Engineering Shenyang,110136 aWQS423@SINA.COM, b45824645@qq.com Keywords: Airplane emission pollutants; NOx concentration field; Fluent; Abstract.
[3] Yan Chuanjun:COMPUTATIONS OF THREE-DIMENSIONAL TWO PHASE REACTING FLOWS IN A MODEL OF GAS TURBINE COMBUSTORS, volume 11 of JOURNAL of ENGINEERING THERMOPHYSICS(1990), p.91-97
[4] Zhao Jianxin:NUMERICAL MODELLING OF CONFIENED SWIRLER STABILISED PREMIXED FLAMES, volume 11 of OURNAL of ENGINEERING THERMOPHYSICS(1990), p. 27-33
[5] ZHAO Xiaoming:NUMERICAL ANALYSIS OF GAS TURBINE CDMBUSTOR, volume 18 of OURNAL of ENGINEERING THERMOPHYSICS(1997), p.11-18.

School of Resources ＆Civil Engineering, Northeastern University, Shenyang, 110004.
Biological Aerated Filter(BAF)[J].Municipal Engineering Tehnology, 2007, 25(4): 270-272
[3] Technical Specification for Biological Aerated Filter Engineering.
China Association for Engineering Construction Standardization.2009.02
Application of Biological Aerated Filter in Wastewater treatment [J].Water and wastewater engineering,2000,26(10):4-8

Study of Construction Method 0n Sole-hole Double Deck Tunnel Zelin Niu1,2,a,Huantong Wu2,b, Yanbo Qi2,c,Songtao Zhang2,d, Yalei Dai2,e 1School of Civil Engineering,Xi'an University of Achitecture and Technology 710055, Shaanxi, P.
Analysis of the Tunnel Supporting System 2D elasto-plastic plane strain finite element system of geotechnical engineering is adopted to simulate and analyze the excavation method of the double-decked tunnel.
In the elasto-plastic analysis of geotechnical engineering, associated flow law is usually employed[4].
After that the internal force of lining has been figured out, we must do the strength checking calculation to see whether the safety factor meet the requirement of “Technical Specification for Railway Engineering”.
[5] S.Dagic.Slope stability problems of the weak rocks in the Asarsuyu pass of the Anatolian motorway．Bulletin of engineering geology and the environment.Vol.57(1998) [6] Sun Jun, Wang Bingjian.

Power Transmission of Two Coupled Rectangular Plates with Elastically Restrained Coupling Edge CHEN Yue-huaa, JIN Guo-yong b, DU Jing-taoc, LIU Zhi-gangd College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China a chenyuehua05341@yahoo.com.cn, bguoyongjin@hrbeu.edu.cn, cdujingtao@hrbeu.edu.cn, d liuzhigang@hrbeu.edu.cn Keywords: coupled plates; elastically restrained edge; vibration; power transmission Abstract.
Introduction In the fields of aeronautical, civil and naval engineering and the like, many structures may be simplified to or composed of rectangular plates elastically restrained edges.
The coupled rectangular plates are often used, and more ubiquitous as easily observed in practice engineering.
Du: PhD thesis (Harbin Engineering University, Harbin China 2009)