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Evaluating Travel Time Reliability based on Fuzzy Logic Xiongfei Zhang1, a, Ruimin Li1,b , Min Liu2,c and Qixin Shi1,d 1Institute of Traffic Engineering, Tsinghua University, Beijing, China 100084 2Department of Civil and Environmental Engineering, University of Wisconsin-Madison, WI, USA 53706 axf-zhang07@mails.tsinghua.edu.cn, blrmin@tsinghua.edu.cn, clmin2@wisc.edu, ddcisqx@mail.tsinghua.edu.cn Keywords: travel time; reliability; fuzzy logic; travel time distribution Abstract.
One is based on the concept of reliability used in manufacturing and other engineering fields.
References [1] Ebeling, C.E., “Introduction to Reliability and Maintainability Engineering”, McGraw-Hill Companies Inc., 1997

The key challenges for the development of a BIM and Mobile Computing based collaborative system in the construction industry Yuan Chen School of Civil Engineering, Zhengzhou University, Zhengzhou, China, 450001 chen_yuan@zzu.edu.cn Keywords: BIM (Building Information Modeling), IFC (Industry Foundation Classes), Construction Collaboration, Mobile Computing Abstract.
Introduction The traditional nature of the construction industry is the fragmentation in terms of the separation between the stages of construction project lifecycle, and the involvement of multidisciplinary participants including architects, structural designers, engineers, contractors and suppliers.
Kubicki et al. [2] applied model driven engineering to model the particular cooperative activities in the AEC sector and demonstrated how the model approach allows users to develop a information structure of new coordination tools with the concern of research domains including social sciences, human-machine interface, mobile and ubiquitous computing and model driven engineering.

Dynamic Characteristics of Single-layer Spherical Aluminum Alloy Reticulated Shell Yuanping LI 1, 2, a Dong OUYANG1, 2, b JIACHU XU 1, 2, C (1.Key Lab of Disaster Forecast and Control in Engineering, Ministry of Education of the People’s Republic of China (Jinan University) ; 2.
Department of Mechanics and Civil Engineering, Jinan University; Guangzhou 510632, China aemail:tliyp@jnu.edu.cn; bemail: toud@jnu.edu.cn; cemail:txjchu@jnu.edu.cn Keywords: Aluminum alloy; Single-layer spherical reticulated shell; Visco-elasticity; Elastic; Vibration Abstract: Comparative analyses of dynamic characteristics between two aluminum alloy single-layer spherical shells, which have the same span, same rise-span ratios and same bars but different material characters of elasticity and visco-elasticity, are presented.
They are often assumed as typical elastic plastic materials and their viscosity characteristics are ignored generally in engineering design.
Fig.4 Maximum node displacement curves of elastic shell with frequency 1.5Hz (left) and 2.5Hz (right) Fig.5 Maximum node displacement curves of visco-elastic shell with frequency 2.5Hz (left) and 3Hz (right) Seismic load The viscous damping of materials are included in the fraction differential constitutive model, but the structure damping is an intractable problem, which can not be described accurately and the equivalent viscous damping ratio ζ is adopted in practical engineering.

Reinforced Concrete Finite Element Analysis Incorporating Material Nonlinearity and Failure Criteria Aspects Sri Tudjono1, Ay Lie Han2, Lie Hendri Hariwijaya3 1Department of Civil Engineering, Diponegoro University, Prof.
Ottosen: Constitutive Model for Short-Time Loading of Concrete, Journal of the Engineering Mechanics Division, ASCE, Vol. 105, No.
Dahl: Uniaxial Stress-Strain Curves for Normal and High Strength Concretes, Rapport 7.6, Project 7, Department of Structural Engineering, Technical University of Denmark, (1992)
Filippou: Finite Element Analysis of Reinforced Concrete Structures Under Monotonic and Cyclic Loads,10th World Conference in Earthquake Engineering, Madrid, Spain, (1992)

The Stiffness Change and Dynamic Characteristics of the RC Frame Weak Layer under Strong Earthquakes Haohua Jia1,a, Demin Wei1,b 1School of Civil and Transportation Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China ajiasir@126.com, bdmwei@scut.edu.cn Keywords: RC Frame; Lateral Stiffness Degradation; Equivalent Negative Stiffness of Column under the Load Action; Weak Layer Critical Status of Collapse; Chaos Characteristics Abstract: In China Wenchuan earthquake, the main characteristic of reinforced concrete frame structure is the weak layer yielding or collapse.
Aseismic Engineering.
Earthquake Resistant Engineering and Retrofitting, 2012(4): 12-17
[7] Qianli Ma, Xinzheng Lu, Lieping Ye.Influence of the Inter-story Post-yield Stiffness to the Variance of Seismic Response.Engineering Mechanics, 2008(7), 133-141.

Influence of Concrete Tension Softening Properties on the Steel-liner Reinforced Concrete Penstock Hailin Wu 1, a, Xiaofan Du 1, Shihe Qin 2,b, Yao Li 3,cand Qun Li 1 1 College of Hydraulic & Environmental Engineering of Three Gorges University, Yichang, 443002, China 2 Guodian Dadu River Houziyan Hydropower Construction Co.
However, For not considering the concrete tension softening characteristic in nonlinear analysis of steel-liner reinforced concrete penstock in the past time, and can not reflect the bearing rules of quasi-brittle material; meanwhile, in view of the complexity of the structure and little consideration of the interaction between the reinforcement and concrete, and in combination with the practice of the steel-liner reinforced concrete penstock in a hydropower station, finite element simulation model is established in this paper; the influences of concrete tension softening characteristic curves on damage distribution laws and damage evolution process of surrounding concrete as well as the stress distribution laws of steel are researched, which can provide the reference for the damage assessment and reinforcement optimization of the penstock engineering.
Journal of Huazhong University of Science and Technology(Nature Science Edition), Vol. 34 ,No.4, p. 99-102,2006(In Chinese) [4] Yuxin Dong, Yanshuo Li: Structure analysis of hydroelectric power engineering (Dalian University of Technology Press, Dalian 1995)
Journal of Civil Engineering and Management, Vol. 28 ,No.3, p. 128-132,2011(In Chinese)

Probability Distribution of Flexural Fatigue Life for Glass Fiber Reinforced Concrete Yan Lv1,a and Heming Cheng1,b a Department of Civil Engineering, Kunming University of Science and Technology, Kunming Yunnan, 650500, P.R.China aly_499@sina.com Keywords: Glass fiber reinforced concrete; flexure fatigue; fatigue-life; weibull distribution Abstract Through the fatigue experiments of glass fiber reinforced concrete (GFRC) specimens with 0%, 0.6%, 0.8% and 1% glass fiber volume fraction, the fatigue-lives of GFRC at various stress levels were obtained.
Introduction In recent years, glass fiber reinforced concrete (GFRC) has developed rapidly and has been widely used in construction, engineering, and other concrete-related field.
Steel fiber concrete fatigue fracture performance and Engineering.
Deterioration laws of concrete elastic modulus under fatigueloading．Mechanics and Engineering, 2003, 25(5): 55-57

Temperature control technique and analysis of mass concrete in the pile cap of main pier in Yangtze River Bridge Jun Su1, a ,Guowang Zuo1,b ,Wei Li1,c 1School of Civil Eng. and Arch., Hubei University of Technology, 430068, Wuhan, China asujun930@163.com, b61641065@qq.com, c515064028@qq.com Keywords: Mass concrete; pile cap; temperature control; cooling pipe; finite element Abstract.
Introduction Mass concrete has been widely applied to the bridge engineering construction, especially in the large pile foundation, pier, pile cap and other key parts.
During construction engineering, if the mix proportion design, temperature control, pouring method, concrete curing and other aspects are handling improper, it can affect the use function and operation safety of the bridge through increasing the internal and external temperature gap and causing the pile cap emerges temperature crack.
The engineering practice shows that: effective measures including choosing of low hydration heat cement, optimization of the mix proportioning of the concrete, controlling of concrete pouring temperature, reasonable construction technology, strict temperature control measures, strengthen the maintenance and monitoring, can control temperature cracks effectively, guarantee the construction quality and also can be reference for other engineering.

In the western China, topography changes quite different, a lot of engineering (especially roads and civil constructions) is built along high slope or above high slope, according to the different slope geological formations, this architecture layout step type.
References [1] Xiaoping Liao: Theory and Practice of Cut Slope Engineering(China Railway Publishing Press,2011).
(in Chinese) [3] Shengxie Xiao: Chinese Journal of Rock Mechanics and Engineering.Vol.25(2006),p.2595.
(in Chinese) [5] ESTERHUIZEN J B, FILZ G M, DUNCAN J M: Journal of Geotechnical and Geoenvironmental Engineering,Vol.127(2001): P837

Value theory of lean construction in China Cui Hai-hong 1, a 1 School of Energy and Civil Engineering of Harbin Commercial University, China aSuperteacher73@126.coml Keywords: Environment, Construction industry, Social values, LC Abstract.
Introduction There is currently much written around the concept of value representing the individual vision of different authors working in diverse sectors: sociology, business, marketing, engineering, etc.
Ballard[8] also argues that it is incumbent upon architectural and engineering designers to consider the global customer as a referent for their professional responsibilities.
Here, value was understood as a property of goods or services, a perspective which is still strongly associated to the concept of value today.Thus, it is argued that “Engineers and economists alike see value in terms of the features that a product or services has” [2].