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Exact Expression of Element Stiffness Matrix for a Tapered Beam and Its Application in Stability Analysis MENG Lixia a, LU Nianli b and LIU Shiming c School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China amenglixia1983@163.com, bn.lu@hit.edu.cn, clsm831206@163.com Key words: tapered beam; stability analysis; exact element stiffness matrix; second-order effect Abstract.
Engineering Structures.
Engineering Structures.
Journal of Harbin University of Civil Engineering Architecture, Vol.31(1998), p. 67-74.

Dynamic Assessment about Simple-Supported Girder Bridge Weizhao Li 1,a , Zonglin Wang 1,b ,Dawei Sun 2,c 1School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150090, China 2Jilin Provincial Communication Scientific Research Institute, Changchun, Jinlin, 130012, China alwzhit@163.com, bwangzonglin@vip.163.com, csundawei19831228@126.com Keywords: Simple-supported girder bridge, Dynamic characteristic, Impact factor, Assessment Abstract.
H: China Civil Engineering Journal, Vol. 30 (1997) No. 6, p.12-17(in Chinese) [7] Z.H.
Zai: Earthquake Engineering and Engineering Vibration, Vol. 26 (2006) No. 1, p.71-77(in Chinese)

Field Measurement of Cable Tension Using Energy Method Qilin Zhang1, a, Dalin Li2,b ,Rujin Ma3,c 1 Department of Building Engineering, Tongji University, Shanghai, China 2 Department of Building Engineering, Tongji University, Shanghai, China 3 Department of Bridge Engineering, Tongji University, Shanghai, China azhangqilin@tongji.edu.cn, blidalinmyshn@126.com, crjma@tongji.edu.cn Key words:Cable structures; Vibration Frequency Method (VFM); energy conservation method.
Acknowledgements This work was supported by Kwang-Hua Found for College of Civil Engineering, Tongji University and National High Technology Research and Development Program (863,2009AA04Z420).

Morales1, a*, Helder Kenzo Kondo1, b, Juliana Cortez Barbosa1, c, Cristiane Inácio de Campos1, d, Francisco Antonio Rocco Lahr2, e, André Luis Christoforo3, f 1 Faculty of Wood Industrial Engineering, State University of São Paulo “Júlio de Mesquita Filho”, Itapeva, 18.409-010, Brazil. 2 Department of Structural Engineering, Engineering School of São Carlos (EESC/USP), São Carlos, 13566-590, Brazil. 3 Department of Civil Engineering, Federal University of São Carlos, São Carlos, 13565-905, Brazil.

Numerical study of damage model for reinforced concrete slab under complex boundary condition subjected to air blast load Dan Lia, Shuang-bin Yangb and Jun-lin Taoc School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China a112282518@qq.com, b 2210063132@qq.com,c junlintao@126.com Keywords: Explosion load; Reinforced concrete slab; Numerical simulation; Damage mode Abstract.
[2] Hsin Yu Low, Hong Hao: submitted to Engineering Structures, 2002, 24: 189–198
(In Chinese) [4] Wei Wang,Duo Zhang,Fangyun Lu, etal: submitted to Engineering Failure Analysis, 2013, 27 : 41–51
(In Chinese) [10] Guillaume Herve, Fabrjce Gatuingt, Adnan Ibrahimb Egovic: submitted to Engineering Computations, 2005, 22(5/6): 583-604.

Research on adaptive PID control for load simulator with varying load Ju Tian1, a *, Yao Chen1,b 1Guangzhou Civil Aviation College, Guangzhou Guangdong China atianju@caac.net, bchenyao@caac.net Keywords: load simulator, extraneous torque, adaptive PID control parameter tuning Abstract.
And in Fig. 2, . 1, servo motor 2, torque sensor 3, power amplifier 4, preamplifier 5, inertia load 6, damping spring 7, servo system 8, angular position sensor Fig.1 The diagram of a typical electro-hydraulic load simulator Fig.2 The mathematical model of the electro-hydraulic load simulator The design of the adaptive PID controller The PID control is a relatively mature, easy to realize in engineering, simple and reliable control method.
In engineering practice, it is not feasible to get the direct differentiation of the error signal, which deteriorates the tracking performance of the load simulator, because the process of the approximate differentiation causes the noise signal to increase abruptly, thereby reducing the signal to noise ratio.
Table 1 The control parameters under different gradients 2.5 5.0 10.0 15.0 35.0 20.0 20.0 20.0 20.0 20.0 6.00 5.00 4 3.00 2.00 10.0 10.0 10.0 10.0 10.0 -0.004 -0.003 -0.001 0 0.001 (a) (b) Fig. 7 The tracking curves with the adaptive PID control under variable load gradient Summary The paper proposes an adaptive PID control technology proved to be with simple structure and easy to realize in engineering.
Tian, Study on Control Strategy of Electro-Hydraulic Servo Loading System.Telkomnika Indonesian Journal of Electrical Engineering. 11(2013) 5044 - 5047.

The Effect of Inclined Arch Rib on the Dynamic Stability of Leaning-type Arch Bridge under Earthquake YuZhu Guo1, a, AiRong Liu2, b, QiCai Yu3, c 1, 2,3School of Civil Engineering of Guangzhou University, Guangzhou 510006, China.
This paper refers to the method of reference paper [6], the APDL language of ANSYS is adopted to write the analytical program of elastic dynamic stability. 3 Engineering Practice A leaning-type arch bridge with 120m span is a through concrete-filled steel tubular tied arch bridge, whose main arch rib is 10 outwardly tilted and inclined arch rib is 80 inwardly tilted.
China Journal of Railway Science and Engineering, 6(1): 21-24 (2009) [4] Airong Liu, Qicai Yu, Rui Song, Junping Zhang.
Dynamic stability of leaning-type arch bridge under earthquake [J].Journal of Shenzhen science and engineering, 27(3):286~290(2010) (in Chinese) [5] Qiang Han.

Research on Longitudinal Slope of Highway Based on Control by Flow Path Length Zhuo Zhang1, a and Jianping Gao1,b 1Shool of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing,400074,China azhangzhuotju@163.com, bjianpinggao@163.com Keywords: highway, longitudinal slope, flow path, control.
《Technique Standard of Highway Engineering》rules that road longitudinal slope should be not less than 0.3% in order to meeting the requirements for the drainage[6], but it has the main consideration about traffic safety, natural conditions and economic conditions to the limit to the largest longitudinal slope, and without consideration to the requirements for the drainage.
[3] Tianjian Ji, Xiaoming Huang and Qingquan Liu: Journal of Traffic and Transportation Engineering Vol 12(2003), p.115-119, in Chinese
[6] Ministry of Communication of the People,s Republic of China: Technique Standard of Highway Engineering(2003) , in Chinese.

Crack Width Calculation of Steel Reinforced Concrete Beams Considering the Bond-slip Xiu Li Cao1, 2, a, De Jian Shen 1, b , Pei Ling He 2, c, Xian Feng Dong3, d and Hong Fei Zhang4, e 1College of Civil and Transportation Engineering，Hohai University，Nanjing, China； 2Department of Architectural Engineering, Nanjing Institute of Technology, Nanjing, China 3China United Engineering Corporation, Hangzhou, China 4Nanjing Branch, Build Honesty and Consultation Limited Company of Dehua Group of Beijing, Nanjing, China, adogupig@yahoo.com.cn, bshendjn@163.com, chepeiling2003@sina.com, ddongxf@chinacuc.com, e1043042421@qq.com Keywords: Crack Width, Steel Reinforced Concrete, Beams, Bond-slip Abstract.
Master’s Thesis of XAUAT (2003) (In Chinese) [4] Zhenhai Guo: Theory of Reinforced Concrete, Tsinghua Publishers(1999) (In Chinese) [5] China Academy of Architectural Engineering, Selection of Research Report on Concrete Strcutures(3), China Building Industry Press (1994) (In Chinese)

Leung 3 and Jang-Kyo Kim 4 1, 3 Department of Civil Engineering, 2, 4 Department of Mechanical Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China 1 cezhuhg@ust.hk, 2 rickywoo@ust.hk, 3ckleung@ust.hk, 4mejkkim@ust.hk Keywords: Clay-epoxy nanocomposite, Wear resistance, Ball-on-disc test, Nanoscratch test.
However, in some engineering applications under adverse service conditions, such as marine structure subjected to sea waves carrying sand particles, the durability of the epoxy coating would be severely limited by its relatively poor wear resistance.
Technical assistance from the Advanced Engineering Materials Facility(AEMF) and the Materials Characterization and Preparation Facilities (MCPF), HKUST is much appreciated.