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A statistical constitutive model for the strength of brittle fiber at different strain rates Wen Huanga, Zhongwei Huangb College of Civil Engineering, Shenzhen University, Shenzhen, China, 518060 aemail: whuang@szu.edu.cn, bemail: huangzw@szu.edu.cn Keywords: brittle fiber, strain rate, constitutive model, tension, strength Abstract.

Exploration of the rockwork controlled blasting closed to the existing railways and its safety precautions LV Xiao-shi School of Civil Engineering, Henan Polytechnic University, Jiaozuo China, 454000 Keywords- existing railways; blasting technology; explosion safety; safety precautions Abstract—The existing roads, railways can no longer meet the growing expansion of the traffic needs, some newly built roads, railways must be crossed with the old lines, the difficulty of construction is considerable, especially Pro tight both line and rock blasting operations, it is necessary to consider boththe safety of the line, but also to ensure that the construction schedule.
Engineering tests Engineering and technical personnel from the blast design, construction design began to participate in the process of blasting operations, including the main contents and possible security problems and corresponding solutions and other field staff on all technical tests should be carried out.
It prevents the blasting hazards at temporary site and effectively improves the construction efficiency with the partition reservation. 3) Before blasting, engineering staff operate technical disclosure with all staff in the science for the possible security problems and corresponding solutions.
Expansion of Existing stonework excavation Controlled Blasting Technology, in: construction and engineering.Vol.5 (2009), p.314-345 [4]Jiang Zheng-jie.
Discussion on Trench-Extension Protection Technology in Bedding High Rock Slope Close to Existing Railway Line [J], in: Engineering Blasting.Vol.5 (2008), p.92-96

The Bearing Capacity of Footings Near Slope Considering the Footing-soil Interaction Yang Jiang1,2,a, Yun Dong1,b, Wenbin Sun1,c, Baohai Chen1 1Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huaian, China 2School of Highway, Chang’an University, Xi’an, China ajy_12345678@163.com, bdyunhyit@163.com, csunwb1969@163.com Keywords: Bearing capacity of footings, Near slope, The finite element method, Footing-soil interaction Abstract.
Introduction The bearing capacity of the foundation is a primary concern in the field of foundation engineering.
Michalowski: Journal of Geotechnical and Geoenvironmental Engineering Vol. 131 (2005), P. 223 [4] W.
Salmasslan: Journal of Geotechincal Engineering Division Vol. 104 (1978), P. 493 [5] Qiwu Huang, Maoson Huang and Guihe Wang: Chinese Journal of Geotechnical Engineering Vol. 29 (2007), P. 572 (In Chinese) [6] Dongdong Han, Mincai Jia and Kaifu Liu: Rock and Soil Mechanics Vol. 28 (2007), P. 2209 (In Chinese) [7] S.
Handa: Journal of Geotechnical Engineering Vol. 115 (1989), P. 553 [8] J.

The equal projection model and application of short fiber reinforced concrete Yanru Li a, Haibo Jiang b and Zebao Kan c Department of Logistics Command and Engineering, Naval University of Engineering, Tianjin, 300450,China; ayanru_li@126.com, bjianghaibo022@126.com, ckanzebao@163.com Keywords: composite material; fiber reinforced concrete; fiber direction distribution; performance prediction; elastic modulus Abstract.
In the design of fiber reinforced concrete, it is necessary to forecast performance according to the use situation of fiber in order to reduce the blindness of the tests or engineering.
References [1] T.L Teng; Y.A, Chu, F.A Chang, H.S Chin: Computational Materials, Science, Vol. 31 (3) (2004 -11) ,P. 337-346 [2] J.H Huang: Materials Science and Engineering A, 315 (2001), p. 11-20
[3] A.S Ezeldin, P.N Balaguru: Journal of Materials in civil Engineering, vol.4 (4) (1992), p. 415-429 [4] P.Y.Pawade, A.M.Pande, P.B.NagarnaikK: International Journal of Advanced Engineering Sciences and Technologies, Vol. 7(2), (2011), p. 169 - 177 .

Effects of Friction Force at Movable Supports on Seismic Performance of a Continuous Beam Bridge Changfeng Wang 1,a, Yijun Bao1,b 1School of Civil Engineering, Lanzhou jiaotong University, Lanzhou 730070, CHINA awangchang-f@126.com, b1203916904@qq.com Keywords: Friction force; continuous beam bridge; movable support, seismic analysis Abstract.
Earthquake Engineering and Engineering Vibration,1998,18(4):30-39.
Engineering structures. 2006(28):1071-1080
World Information On Earthquake Engineering,2005,21(4):82-87.
Soil Dynamics and Earthquake Engineering. 2006(26): 31-44.

Thermal stress compensation of MgO concrete in construction of high arch dams in cold areas Jing Xiangyang1,a, Liu Xinghong2, b and Zhang Xu3, c 1 State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Hubei Province, China 2 School of Civil and Architectural Engineering, Wuhan University, Hubei Province, China 3 HydroChina Beijing Engineering Corporation, Beijing 100024, China a xy_jing@126.com, b liuxhphd@163.com ,c whuzhangxu@gmail.com Keywords: MgO concrete, stress compensation, arch dam, simulation, finite element method Abstract: When mixed with the admixture MgO, the volume contraction deformation of mass concrete could be compensated, which is an effective way to solve the temperature cracking problems in construction of concrete projects.
Journal of Hydroelectric Engineering.
Journal of Construction Engineering and Management.
Journal of Structural Engineering.

Bearing capacity of concrete-cored DCM pile composite ground Chi Wang1,a Yong-fu Xu1,b*(Corresponding author) Ping Dong2,c 1Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, 2Department of Earth Sciences, Nanjing University, Nanjing 210093, China achongdong@sjtu.edu.cn, byongfuxu@sjtu.edu.cn, cdongp@nju.edu.cn Keywords: concrete-cored DCM pile, composite ground, bearing capacity mechanisms Abstract.
To meet the requirement of engineering, concrete-cored DCM pile is chosen to treat the deep soft ground.
State Key Laboratory of Ocean Engineering and Shanghai Leading Academic Discipline Project (B208) are also acknowledged.
Cold Regions Engineering, ASCE, New York, 1986, 1–10
Geotechnical and Geological Engineering, 2004, 22, 105–119.

A new hybrid control of mega-sub controlled structure under seismic excitation Cai Ting1,a Zhang Xun’an1,b, Qin Xiang’jun1，Jiaoping1,Xue Ronggang2 1Department of Civil Engineering, Northwestern Polytechnical University, Xi’an 710072, China 2Norendar International, Ltd, Shi Jiazhuang 050011, China aemail: caitingcm@163.com.cn, bemail: jiaoping@nwpu.edu.cn Keywords: mega-sub controlled structure (MSCS); hybrid control; relative stiffness ratio; weight matrix; seismic excitation.
Taking all the control scope of each mass point into account, it is better that RK is taken as 0.3817 for practical engineering.
References [1] Erkus B, Abe M and Fujino Y (2002), “Investigation of semi-active control for seismic protection of elevated highway bridges,” Engineering Structures, 24:281-293
[3] Lian YD, Zhang XA, Cherry S (2007), “Damping characteristics of friction damped braced frame and its effectiveness in the mega-sub controlled structure system,” Earthquake Engineering and Engineering Vibration,6(2):171-181
[5] Zhang YH and Liang QZ (2000), “The earthquake resistant philosophy and initial design of megaframe with suspension systems,” Engineering Mechanics (in Chinese), 17(2), 10-17.

Experimental study on a ground source heat pump system in cold area Yi Liu1,a, Yaxuan Wang2,b，Yaning Zhang3,a 1School of Energy and Civil Engineering, Harbin University of Commerce, Harbin Song Bei Xue-hai Street ,District No.1, Harbin, 150028, China 2College of Engineering, Heilongjiang Bayi Agricultural University, Daqing, 163318, China 3School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China aemail: liuyiyuanhongyan1975@126.com, bemail: wangyaxuan1980@163.com Key words: ground-source heat pump; underground heat exchanger; inverter controlling; COPHP; COPSYS Abstract: Experiment of a ground source heat pump system in cold area is studied in this paper.
GSHP have been put to engineering use in cold areas such as Hokkaido, Japan [7] and China [8, 9], while the weather is not particularly cold.
Chong: Applied Thermal Engineering Vol.27(2007), p. 430–441
[5] Katsunori Nagano, Takao Katsura and Sayaka Takeda: Applied Thermal Engineering Vol.26(2006), p. 1578–1592

STUDY ON CONCRETE TEMPERATURE CRACK BASED ON MESOMECHANICS Xinghong LIU1,3,a , Jingping ZHU1,b , Xiaolin CHANG1,2,c , Wei ZHOU1,2,d 1State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China 2 Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering ,Wuhan University, Ministry of Education, Wuhan 430072, China 3School of Civil Engineering and Architectural, Wuhan University, Wuhan 430072, China aliuxhphd@163.com, b396162434@qq.com, cchangxl@whu.edu.cn, dzw_mxx@163.com Keywords: mesomechanics; heterogeneity material; crack propagation; cold snap Abstract: A three-phase mesomechanics model was established to simulate the aggregate, cement mortar and the interface between them.
Now, mesostructure-based modeling and random distributing techniques are recognized as important research areas in engineering and materials science [1].
International Journal f or Numerical Methods in Engineering, 1999, 44: 567-585
Engineering Mechanics, 2009, 12(26): 155 -159