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The researchers have recently increased the attention in controllable fulids and its applications.Magnetorheological(MR) dampers are devices that employ rheological fluids to modify their mechanical propeties.Their mechanical simplicity,high dynamic range,lower power requirements,large force capacity,robustness and safe manner operation in case of fail have made them attractive devices to semi-active control in civil,aerospace and automotive suspension applications.The mechanical models of the magnetorheological dampers by parameter modeling and non-parameter modeling were discussed and analyzed.
When additional magnetic field is removed, magnetic flow variant and restored to the original liquid state, the response time is only a few milliseconds, easy to control and continuous control, and the above characteristics make magnetorheological fluid in engineering practical possible, can be made into brake and clutch, such as shock absorber magnetorheological components [3].
At present, to engineering of MRF dampers modeling method is mainly parameters modeling and the parameters of two kinds of modeling.
Engineering applications of electro-rheological materials [J].
Earthquake Engineering and Engineering Vibration, 37(2008)144-150

Numerical Study on Pulsating Laminar Flow in Annular Space for Power-Law Fluid Shanbo Huang1,a, Liang Gong 1,b and Zhaomin Li2,c 1School of Pipeline & Civil Engineering, China University of Petroleum (Huadong), Qingdao Shandong PRC 266580 2Research Center of Foam Fluid, China University of Petroleum (Huadong), Qingdao Shandong PRC 266580 ahsbhyw@upc.edu.cn, blgong@upc.edu.cn, clizhm@upc.edu.cn Keywords：Pulsating flow; Power-law fluid; Annular space; Flow characteristic; Numerical simulation Abstract.
A mathematical model of pulsating laminar flow inside an annular space for power-law fluid was established basing on the background of petroleum engineering.
Introduction Annular space is a common channel in the engineering field.
However, fluid may make the reciprocating motion with the motion of inner wall along the axial direction in the engineering field.

Stability analysis on anti-slide pile to reinforce slope based on ABAQUS Xiaojie Gu1, a, Taiquan Zhou1, b , Shilong Lu1,c 1 School of Environment and Civil Engineering, Jiangnan University, Wuxi, China, 214122 a416704023@qq.com, b 846158321@qq.com, c 916303231@qq.com Keywords: ABAQUS finite element method, anti-slide pile, soil slope, stability Abstract The research uses the method of three-dimensional finite element analysis combined with the actual project application to study the slope reinforced by anti-slide pile.
The study is of great benefit to the actual engineering.
In the study of prevention and control of landslide, a variety of engineering measures are put forward.
References [1] FeiKang.: ABAQUS application in the geotechnical engineering.

Research on the Technology of Testing and Evaluation of the Existing Building Foundations Zhenshuan Zhang1, Yu Deng2,a and Shifeng Fu1 1Hebei Academy of Building Research, Shijiazhuang, Hebei, 050021, China 2School of civil engineering, Hebei University of science and technology, Shijiazhuang, Hebei, 050018, China ady1234_0_0@163.com Keywords: Existing building, Foundation, Testing, Evaluation.
It can be popularized in engineering.
The test on deformation of foundation engineering of intensity vertical wall of influence, south north of the settlement of vertical wall settlement of less than, because the north by soaking water softening of foundation bearing capacity of less than by south.

By applying the method, performance estimate for shear wall under rare earthquakes can be conducted by engineering designer, dispense with complicated nonlinear analysis.
With reference to the measurement on strains of vertical reinforcements at the base of wall piers, the strain distribution roughly meets the plane section assumption which is widely used at actual engineering.
Thereby, the evaluation for wall pier displacement at the plastic zone of slender cantilever wall by considering only flexural mode can produce much error in actual engineering.
As for designed slender shear wall in actual engineering with certain axial loading ratio, the storey drift of wall pier in plastic zone can be determined by using the proposed method.
Chen, Static Inelastic Analysis of Shear Walls with Macro-model, Structures and Buildings: Part of Proceedings of Institution of Civil Engineers, paper number 13586 (2004), January, p.1-13

The experimental results indicated that test parameters of connection composed of CSSEUHSC columns and SEC beams with good crack resistance performance may be referred for engineering application.
Acknowledgements The research reported in the paper is a part of the Project 50878037 supported by National Natural Science Foundation of China, Project LP1015 supported by Open Foundation of State Key Laboratory of Coastal and Offshore Engineering and Project 20100471445 supported by China Postdoctoral Science Foundation.
Engineering Structures, Vol.18 (1996). p.850 [2] J.
Journal of Shenyang Architecture and Civil Engineering University, Vol.19(2003). p.178 [4] C.
Key Engineering Materials, Vol.417-418(2010). p.845 [6] JGJ101-96.

Numerical Simulation for Temperature Variability of the Stable Transported Hot Oil Pipeline Pei Guihong1,a,Han Dongxu1,b, Leng Jing1,c 1School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu, 610500, China a2005Dion@sohu.com, b617891702@qq.com, c675168449@qq.com Keywords: Submarine Oil Pipeline, Safe Shutdown Time, Numerical Simulation Abstract: This paper introduces the physical model and the mathematical model for the submarine oil pipeline during shutdown time, and establish the heat transfer model for the shutdown time of submarine oil pipeline by using the software COMSOL Multiphysics.
The permissive shutdown time for pipes of different diameters is calculated in specific case and the diameter-permissive shutdown time curve for the working condition is obtained, thus, provides theoretical support for rush repair which is required when pipe is forced to stop transmission as well as engineering design and safe operations.
Engineering example Sea water temperature:4℃; buried depth od pipeline:1m;the length of the pipeline: 20 km; diameter of the pipeline: 200mm,300mm,500mm; oil temperature: 60℃;oil velocity: 1m/s; thermal conductivity of the oil: 0.14 W/(m·K); oil density: 949 kg/m3; specific heat capacity of the oil: 2100 J/(kg·K); thermal conductivity of submarine silt-quality sandy soil: 7 W/(m·K); submarine soil density: 2000 kg/m3; specific heat capacity of the submarine soil: 2500 J/(kg·K); thickness of insulation layer: 30mm; thermal conductivity of insulation material: 0.035 W/(m·K); density of the insulation material: 50 kg/m3; specific heat capacity of insulation material: 1380 J/(kg·K).
(4) In the simulation calculation, relationship between influencing factors and maximum shutdown time can be easily obtained by changing the value of a certain factor, which plays a positive role in decision-making and provide theoretical support for engineering design as well as rush repair which is required when pipe is forced to stop transmission.
Reference [1] Shang Xiangyu, Zhou Guoqing, Bie Xiaoyong: submitted to Journal of China University of Mining and Technology (2005) [2] Zhenpin, Maguiyang, Gujintong: submitted to OIL and GAS STORAGE AND TRANSPORTATION (2006) [3] Zhangqingsong, Zhaohuijun, Zhaoshuhua: submitted to Journal of Jiangsu Polytechnic University (2007) [4] Liwei, Zhangjinjun: submitted to Xi’an petroleum university press (2005) [5] Liuxiaoyan, Zhaojun, Shicheng: submitted to Oilgasfield Surface Engineering (2006) [6] Zhangjin, Wuming: submitted to Journal of Liaoning University of Petroleum and Chemical Technology [7] Zheng Ping, Ma Guiyang: submitted to OIL and GAS STORAGE AND TRANSPORTATION (2006) [8] Sun Weidong, Simulation calculation of heat transfer for submarine oil pipeline, master’s degree thesis of Daqing Petroleum College (2007) [9] Zuyao, Numerical simulation of hot oil temperature field for buried oil pipeline, master’s degree thesis of Southwest Petroleum University (2003)

The Prediction Method of S-N Curve For Welded Steel Structure Using Critical Distance Theory Deqing Guan1,a ,Yanhui Pan2,b 1,2Department of Civil Engineering and Architecture,Changsha University of Science and Technology,Changsha,China acsgdq@126.com,bpanyanhui032@163.com Keywords：Critical distance theory, Welded steel structure, 3-D residual stress, Fatigue notch factor, Effective stress concentration factor, Fatigue strength, S-N curve.
This method can be reduced fatigue test, saved funds and provided reference for engineering application.
Wang: Fatigue & Fracture of Engineering Materials & Structures Vol. 23 (2000), p. 387-394 [2] D.
David: International Journal of Fatigue Vol. 31 (2009), p. 20-27 [4] D.Taylor: Engineering Fracture Mechanics Vol. 75 (2008), p. 1696-1705 [5] S.
Luca: Engineering Fracture Mechanics Vol. 75 (2008), p. 1706-1724 [6] F.

Investigation on Discrepancy of Dynamic Responses between Two Constitutive Models of Aluminum Alloy BRBs in Structures Qiang Liu1, a, Xiaoqun Luo1, b * 1College of Civil Engineering, Tongji University, No. 1239, Siping Road, Shanghai, China, 200092 aliuqiang_tj@foxmail.com, bluoxiaoqun@tongji.edu.cn Keywords: Aluminum alloy, Buckling restrained braces, Constitutive models, Single-deck frame.
Suggestions for further academic research and engineering application were given.
All the errors were less than the limit of engineering permissible error 5%.
All the errors were less than the limit of engineering permissible error 5%.
All errors were less than the limit of engineering permissible error 5%.

Research and application of parametric design in traditional plug-flow aeration tank with drawing methods Shi jun Yin 1,a, Meng qiu Sun 1,b,Xiang Li 1,c, Xu fang Sun 1,d, Li na Tian 1,e , Lin Liu2,f , Ying ying Shang 3,g 1School of municipal and environmental engineering, Shenyang JianZhu University, Shenyang, Liaoning , China 2 Institute of Architectural Design FRANSHION urban design,Beijing,China 3Northeast China municipal engineering design and research institute , Changchun, Jilin , China a13591641869@163.com, b703214912@qq.com, c 996504231@qq.com, dxiaofanghaoren@126.com, e1048753165@qq.com,f634121316@qq.com gcherry19860922@126.com, Keywords: the traditional plug-flow aeration tank; parametric;CAD’s secondary development;VBA; Abstract By using the technology of CAD drawing and standard design calculation is very necessary and feasible.
Designers can use the technology of parametric drawing, carries on two times of CAD development of the use of VBA language, the water processing graphics processing and engineering graphics rendering and completed in the computer, realize the parametric design of water treatment structures.
AutoCAD parametric drawing in civil engineering design applications.
Shenyang: Shenyang Architectural University, municipal engineering, 2008
Heilongjiang Hydraulic Engineering College, 2000,27 (1) :28-29