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An Optimal Preventive Maintenance Model for a Structure XiaoLi Zou School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, P.
Introduction Preventive maintenance is very important to control the operational reliability of a complex engineering structure.
Generally, the damage of an engineering structure is measured by the size of a dominant crack in the structure, and failure occurs when this crack reaches a critical magnitude.
Kopnov: Reliability Engineering and System Safety Vol. 40 (1993), p. 319 [4] T.
Ntuen: Reliability Engineering and System Safety Vol.31(1991), p.31 [6] F.

.,   Systems approach to the modeling and synthesis of building materials, Contemporary Engineering Sciences. 8 (2015) 219-225.  
Garkina I., Danilov A., Mathematical [3] Garkina I., Danilov A., Skachkov Y., Modeling of Building Materials as Complex Systems, Key Engineering Materials. 730(2017) 412-417 [4] Yu.
Korolev, Systems analysis in building materials, Moscow State University of Civil Engineering, Library of scientific developments and projects, (2012)
Series: Materials Science and Engineering. 245(2017) 062014
[6] Garkina I.A., Danilov A.M., Budylina E.A., Methodological principles design of composite materials, Journal of Engineering and Applied Sciences. 11(2016) 2524-2527.

Frequency Response Characteristic of a Flexible FBG Sensing Beam for Measuring Dynamic Lateral Displacement of Soil in Shaking Table Tests Yunlong Wang1, a Xiaoming Yuan1 Yurun Li2 Longwei Chen1, 1Institute of Engineering Mechanics, China Earthquake Administration, 29 Xuefu Road, Harbin 150080, China 2College of Civil Engineering, Hebei University of Technology, Tianjin 300401 awyl_ys@yahoo.com.cn Keywords: frequency response characteristic; FBG sensing beam; dynamic lateral displacements; shaking table test; Abstract.
Fig. 5 The frequency response curve (from 1Hz to 6Hz) of the sensing beam Acknowledgements This work was financially supported by Specific Item of Fundamental Scientific Research in Institute of Engineering Mechanics under grant No. 2009A04 and No. 2011B07.
CETS-EE-001, National Research Council, Committee on Earthquake Engineering, Washington, DC, 1985
[2] Taboada-Urtuzuastegui, V.M. and Dobry, R., Centrifuge Modeling of Earthquake-Induced Lateral Spreading in Sand, ASCE, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 124, No. 12, December 1998

Research on out-plane Bending Stiffness of Multi-ribbed Slab Structure HaiJun Yuan1,a Lang Cao1,b LiangHao Deng2,c 1 College of Civil Engineering Hohai University, Nanjing, 210098, China 2 Nanjing Hydraulic Research Institute, Nanjing, 210029, China a yhj29hs@163.com, b 15312058818@126.com, c 626668384@qq.com Keywords: multi-ribbed slab; equivalent stiffness method; plate theory; out-plane Abstract: Floor loads of the large-bay floor can cause larger bending moment at the floor edges.
But the relative error increases with the size increasing of the wall-length, so in the actual engineering designs, we can make B(wall-length)=5.4m and width-height ratio between 1 and 3, which can not be large
Journal of earthquake engineering and engineering vibration,2009(5):73-78
Theories and Application of Plate Analysis: Classical Numerical and Engineering Metheods[M].John Wiley，2004.

Analysis of the Settlement of Roadbed-Culvert Transitional Section in the High Salinity Regions Wu Yaping1, a, Huang Huanan1, b*, Xu Zhibiao1, c, Wang Jun2, d, Wang Gang3, e, Peng Ehui2, f 1School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070 China 2China Railway 16Th Bureau Group Co., Ltd, Beijing 100018 China 3Qinghai local railway construction investment co.
According to the actual engineering geological conditions and laboratory tests, the parameters of the rheological model are calculated inversely, The model parameters [5], and are 19.38 kPa, 2.01 kPa and 67.18 kPa respectively.
Zhou, Rheological mechanics principle and its application in geotechnical engineering, in geotechnical engineering, Southwest Jiao tong University Press, Chengdu, 1995
Liu, Numerical Analysis of the Earth Pressure on the Culvert under the Embankment of High-stacked Soil, The seventh academic conference proceedings of the society for rock and soil mechanics and Engineering, 2002, pp. 302-305

Study on Crack Tip Field of Shape Memory Alloy Board under Bending Load Bo ZHOUa, Taiyue YIN, Xukun LI College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China azhoubo@hrbeu.edu.cn Keywords: Shape memory alloy, board under deformation, crack tip, stress field.
It has a wide application field of engineering practices [3-5].
The authors would like to thank them and Harbin Engineering University.
Yoon: Key Engineering Materials, Vol. 324-325 (2006), p.335 [7] L.C.

Material Development of Nano Silica Indonesia for Concrete Mix Jonbi1, a, Binsar Hariandja 1,b, Iswandi Imran1,c, Ivindra Pane1,d 1Civil Engineering, Faculty of Civil and Environmental Engineering, ITB, Indonesia 3ajbg@cbn.net.id, bwdidi28@yahoo.com, ciswandiimran@gmail.com, divpane@gmail.com Keywords: Nanotechnology, Nano silica, Characterization, Polishing Liquid Milling Technology Abstract.
Among of the main steps in using silica sand for concrete are screening suitable material, process the raw silica sand into finer powder, thereby improving its chance to act also as pozzolan, and developing the engineered mix proportion.
[6] Ashwani K.Rana, Shashi B Rana, Anjna Kumari, and Vaishnav Kiran: Significance of Nanotechnology in Construction Engineering, International Journal of Recent Treands in Engineering,Vol.1 (2009)No. 4,46-48

Experimental Study on Relationship Between Saturation Degree and Void Ratio of Remolded Soils on Drying Path Donglin Wang School of Civil Engineering, Anhui University of Architecture; Hefei 230601, China wdonglin@yahoo.com.cn Keywords: remolded soil, degree of saturation, shrinkage curve.
As a consequence, matric suction and texture of the soils vary with environments [1-5], and then shrinkage test of soil is very important for engineering.
Engineering Geology, Vol.49 (1998), No.2, p.85 - 93
Journal of the Geotechnical Engineering Division, Vol. 103 (1977) , No.5, p. 447 - 466.

Study on Factors Influencing Hydration Heat Process of Ceramisite Cellular Concrete Shan Qi Fang1, a, Tie Jun Qu1, b, Yun Xing Shi*2, c, Kun Ni2, d, Ji Chuan Geng3, e and Yan Gang Zhang2, f 1Department of Civil Engineering, North China University of Technology, Beijing 100041, China 2Technical Center, China State Construction Engineering Co., Ltd., Beijing 101300, China 3State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China afangshanqi101@163.com,bqtj@ncut.edu.cn,cyunxing_shi@sina.com,dnikunun@126.com, egengjch@gmail.com, fg273551408@qq.com Keywords: Temperature; Hydration Heat; Compressive Strength; Ceramisite Cellular Concrete Abstract.
Acknowledgments This work was financially supported by China State Construction Engineering Co., Ltd.

Analysis and Calculation of the Additional Stress in the Foundation under Trapezoid-distribution Load Yan Shao1, a, Yi Guan 2,b and Weizhong Xing 3,c 1,2 School of Civil Engineering, Anhui University of Architecture, Hefei, Anhui, 230022, China ashaoyan@aiai.edu.cn, b1079660359@qq.com, cxwz19901012@163.com Keywords: Additional stress, Soil Mechanics, Trapezoid line load, Trapezoid-distribution load.
The formula can be applied to the additional stress′s calculation for space problem more widely, offering convenience for engineering design.
References [1] Jian Wang, Further discussion on stress in soil under triangular distributed load, Roadbed Engineering, vol. 4, 2007, pp.34–35.
(In chinese) [3] Haibin Liu ,Kaicui Kuang, Calculation and Analysis of Additional Stress based on Abutment Embankment Using Boussinesq′Equation, Chinese Municipal engineering, vol. 2, 2002, pp.37–39.