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Research on the relationship between Clay Content in Aggregate and Water Stability of Rubber Asphalt Mixture Zhaobin Xie1,a 1College of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha, Hunan 410004, China azhbxie@163.com Key words: asphalt rubber; clay content; water stability; experimental research Abstract: In order to verify the characterization degree of water stability, research selects some clay content aggregate retrieved from road engineering field to produce rubber asphalt mixture and carry out the water stability test.
[2] JTJ 058-2000, Test Methods of Aggregate for Highway Engineering (JTJ058-2000).
[3] JTG E51-2009, Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineering
[5] JTJ 052-2000, Asphalt and Asphalt Mixture Test Code for Highway Engineering.
Engineering Handbook of Asphalt Pavement.

A New Kind of Modular Assembly Steel Structure System Zaihua Zhang 1,2 a, Xingping Shu 1, b, Ran He1,2, c 1Steel Structural Institute of Civil Engineering College, Hunan University, Changsha, Hunan, 410082, China 2 Hunan City University, Yiyang, Hunan, 413000, China azaihua_zhang@163.com ,bshuxingping@sina.com, c122362920 @qq.com Keywords: modular assembly, assembly structure system, truss beam steel frame system, technology characteristic, Abstract.
As a new type of structure system suitable for the realization of building industrialization, assembly structure system is a trend in the development of steel structure engineering.
It is a big obstacle for the design, inspection and acceptance of practical engineering.
Hastak, Manufactured Housing Production Layout Design[J], Journal of Architectural Engineering, 2005,11,pp:25-34
Jamil, Adaptable Industrial Building System: Construction Industry Perspective[J], Journal of Architectural Engineering, 2012,18, pp:140-147

The Application of Interval Analysis Method in the Stability Analysis Shanshan Hao 1,a, Xin Xi 2,b , Shuying Qu 3,c , Wenpu Shi 4,d 1,2,3,4 School of Civil Engineering, Yantai University, Yantai, China ahaoshanshan0411@163.com, bxixin0717@163.com, cqsy_qu@163.com, dswp636793@163.com Keywords: material mechanics; interval analysis; compressive rod stability Abstract.
Compressive rod stability design will be taken as an example to discuss interval analysis processing method; it explains not only the necessity for material mechanics and engineering design to lead into the interval analysis method, but also the specific application of it.
In many engineering calculation, it needs to be made check calculation or design calculation.
In engineering practice, the stability safety coefficient is usually bigger than the Strength safety coefficient because of initial curvature of compressive rod, eccentric action of load, material in homogeneity and other factors.
For the case (A), the result is (11) For the case (B), the result is (12) For the case (C), the result is (13) Conclusion Many mechanical parameters in engineering are from experiments.

STUDY ON STATISTICAL DAMAGE SOFTENING CONSTITUTIVE MODEL AND DETERMINATION OF PARAMETERS FOR ROCK BASED ON LOGNORMAL DISTRIBUTION WEN Jianhua 1, a, ZHOU Cuiying 1,b , HUANG Li2,c , CHENG Ye1,d , HUANG Linchong 1,e, YOU Fanfan 1,f 1School of Engineering，Sun Yat-sen University，Guangzhou 510275，China 2School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China awen_jianhua0726@yahoo.com.cn Keywords: Lognormal distribution; statistical damage softening constitutive model; determination of parameters; geometry boundary condition method.
Gabbro experiment comparative analyses show that the new damage softening constitutive model is rational and convenient in engineering.
A new approach to numerical method of modeling geological processes and rock engineering problems-continuum to discontinuum and linearity to nonlinearity[J].
Engineering Geology，1998，49(3/4)：207–214
Chinese Journal of Rock Mechanics and Engineering, 1996,15(1):55-61.

Comparison for Different Circumferential Weld-induced Imperfections on Steel Silos Xiangrong Chen a, Yuanyuan Jiang b and Zhiyun Zhao c School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, Shan xi, 710055, China acxr90@126.com, bjiangfenghuashu@163.com, c11zhaozhiyun@163.com Key words: Steel silos, Circumferential imperfection, Depression amplitudes Abstract.
Over the years, the circumferential imperfections have been known to result in the most important influence on the buckling of steel silos, which is also the most common defect in practical engineering.
[3] Rotter JM, Teng JG: Journal of Structural Engineering, ASCE, 115(5) (1989), p.1244
[5] Xiaoqin Ao,Xiangrong Chen: Journal of Water Resources and Architectural Engineering, 20(6) (2010), p.112, In Chinese
[6] Berry PA, Rotter JM, Bridge RQ: Journal of Engineering Mechanics, ASCE, 126(4)(2000), p.405.

Influence of Silica Fume on Mechanical Property of High Performance Concrete Yunfeng Li, Jian Zhu and Li Xu Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation (Shandong University of Science and Technology), Qingdao 266590, China hhliyunfeng@126.com Keywords: silica fume, high performance concrete, mechanical property, age Abstract.
With the ultrafine physical structure of and high volcanic ash activity, silica fume is more important admixture in concrete improving the strength and durability of concrete, and it is widely used in high performance concrete engineering.
Introduction With the increasing of height and span of modern engineering structures in the growing severe environment, the engineering construction will increasingly focus on the growing demands for the strength and durability of concrete.
Conclusions With the ultrafine physical structure of and high volcanic ash activity, silica fume is more important admixture in concrete improving the strength and durability of concrete, and it is widely used in high performance concrete engineering.

Design and Analysis of a Light-weight Steel Gabled Frames Structure Wenfeng Du a, Zhifei Sun b, Hui Zhang c and Fudong Yu d College of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China adwf@henu.edu.cn, b sunzhifei88@126.com, c hedazhanghui@163.com, d vipyfd@163.com Keywords: gabled frame, suspended loads, optimization of column spacing.
This paper, based on the practical engineering of the steel structure of Henan Shangpin food Co.
Zhou, One-time pretensioning analysis method for prestressed space truss, Journal of Zhejiang University (Engineering Science), 37 (2003) 629-633
Zhang, Study on static stability and the limited load carrying capacity of Vierendeel latticed shells, Journal of Zhengzhou University ( Engineering Science), 29 (2008) 99-102
Li, Stability analysis of single-layer latticed shell, Engineering Mechanics, 13 (1996) 93-104

Evaluation of Grouting Effect Detection in Goaf Huiren Bai1, a and Jingjing Li 1, b 1 Dalian University Civil Engineering College, Dalian 116600, China a bhr60@163.com, b jingjing_li_long@163.com Keywords: the goaf; grouting reinforcement technology; quality detection.
Combined with engineering example, the paper discusses the grouting filling method to strengthening governance goaf.
Engineering Geological Conditions and Reinforcement Technology of the Goaf Geological Conditions.
Yu, Engineering Survey, 10 (2009) 9-11
Wang, West-China Exploration Engineering, 8 (2012) 194-195.

At the beginning, they just appeared in the structure of bridges, factories and storages, and then gradually turned up as a form of building structural materials in civil architecture such as markets, schools and office buildings.
Metal materials used for constructional engineering can be divided into ferrous and non-ferrous metal according to the tint.

In recent years, computer technology in geotechnical engineering had great development.
Based on the prototype engineering and model test[4-5].
CHINA CIVIL ENGINEERING JOURNAL, 2000, 34(4).
Foundation engineering. 2000, 3(10):34-37.
Pile foundation Engineering [M].Beijing, China Communications Press,1992.