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study on failure of soft overburden of fully mechanized top coal caving WANG Jin Shan1, WANG Zhong Chang2 1 Higher Vocational and Technical College, Inner Mongolia University of Science & Technology, Baotou, 014010,China wjs1232005@126.com 2 School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian, 116028, China wazoch@163.com Keywords: Soft overburden, mixture ratio, caving span, water-flowing fractured zone Abstract.
Chinese Journal of Rock Mechanics and Engineering, Vol. 21 (2002), February, p. 273-279.
Chinese Journal of Rock Mechanics and Engineering, Vol. 22 (2003), August, p. 1239-1243.
Chinese Journal of Rock Mechanics and Engineering, Vol. 21 (2002), January, p. 56-59.
Chinese Journal of Geotechnical Engineering，Vol. 26 (2004), May, p. 632-636.

Sensor network optimal design of microseismic monitoring system at the left slope of Jinping I hydropower station Gang He1, a, Nuwen Xu2, b , Chun Sha1,c and Li Tian3,d 1 HydroChina Chengdu Engineering Corporation, Chengdu, Sichuan Province 610072, China 2 College of Water Resources and Hydropower, Sichuan University, Chengdu, Sichuan 610065, China; 3 School of Civil and Hydraulic Engineering, Shandong University, Jinan, Shandong, 250061, China avisual_hg@163.com, bxunuwen@scu.edu.cn, c553568439@qq.com, dtianl-007@163.com Keywords: Jinping I hydropower station; rock slope; microseismic monitoring; sensor; optimal design Abstract: In order to real time monitor and analyze the rock fracturing due to continuous construction and consolidation at the left slope of Jinping I hydropower station, southwest of China, a microseismic monitoring system was conducted and an optimal design for the sensor arrays was investigated.
Nowadays it is extended to a wide variety of rock engineering problems such as rockburst prediction in deep-buried tunnel [2] and instability analysis of rock slope [3].
In the present study, a microseismic monitoring system manufactured by ESG (Engineering Seismology Group), Canada has been installed at the left bank slope of Jinping I hydropower station in June 2009 in order to real time monitor and analyze the rock fracturing due to continuous excavation and consolidation of the rock slope.
The left slope has lots of main characteristics such as large scale, complex engineering and technical conditions, high and steep natural valley slopes, higher stress levels, a strong rock unloading, inter-layer extrusion zones and deep cracks in the complex geological site [5, 6].

Challenge and Development of Sludge Treatment and Disposal in China Longlong ZHU 1,a , Liping QIU 1,b*, Lixin ZHANG 2,c, Shoubin ZHANG 1,d 1School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China 2Ji Da Hospital, University of Jinan, Jinan 250022, China ajulonaki@163.com, blipingqiu@163.com, clixinzhang@163.com, dcea_zhangsb@ujn.edu.cn ﹡Corresponding Author Keywords: Sludge production in China, Treatment and Disposal, Resource Utilization Abstract: As the grim situation of the contamination caused by the sludge is gradually expanded in China, the target to make sludge harmless, stable, reduced, and available is increasingly aimed.
Production of Engineering Materials The processed sludge can be used for bricks, ceramics, ceramsites, cements, and biodegradable plastic (Poly-β-hydroxyl acid Polyhydroxyalkanoates, PHAs).
Agricultural and Construction Applications The engineering application of sludge mainly consists of land from the sea, roads building and so on.
However, compared with developed countries, we are just in the started stage, many technologies are not mature, and engineering running conditions are not contented.
[6] Juju LIU and Hailing WANG: China Municipal Engineering(In Chinese), 2013, 29(4):1-3

Stability analysis of a new frame formwork support Liwu Nie1, a, Zhenhua Liu2,b ,Guyue Han1, c,Jigang Zhang2,d 1 Liaoning Technical College of Construction, Liaoyang, 111000, China 2School of Civil Engineering, Qingdao Technological University, Qingdao, 266033, China anieliwu2008@163.com, bliu.zhenhua1989@163.com, chgyhit2008@163.com, dzhangjigang_hit@163.com Keywords: frame formwork support; stability bearing capacity; finite element analysis; ANSYS Abstract:Considering the structural characteristics of high-rise residential with regular plane design, simple load condition and small height change of standard floor, a new frame formwork support is proposed.
However, only the minimal eigenvalue ​​is meaningful in engineering problems.
LINK8 unit called a 3D bar element, with a wide range of engineering applications, can simulate the truss, rod, cable and spring, etc.
Table 2 ANSYS analysis value of single-frame bearing capacity Grouping Basic Unit(kN) Increasing range maximum stress (Mpa) System(kN) Increasing range maximum stress (Mpa) GroupⅠ 119.15 0% 182 124.76 0% 125 GroupⅡ 154.37 22.81% 173 156.29 22.99% 116 GroupⅢ 154.41 22.83% 173 156.21 23.11% 112 GroupⅣ 154.57 22.91% 173 156.52 23.26% 111 Conclusions Through the above analysis, conclusions are as follows: 1)Based on engineering experience and the related calculation, the requirement value of frame bearing capacity is about 40kN.
In Chinese [3] Xin-min Wang: ANSYS numerical analysis of engineering structures (China communication Press, Beijing 2007).

Evolution Model of Concrete Failure Surface under The Action of Load and Frezee-Thaw Cycles Chen Sijia1,a , Song Xiaobing1,b , Liu Xila1,c, Zhang Jiachao1,d 1 Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China acsj5719@163.com, bxbsong@sjtu.edu.cn, cxilaliu@sjtu.edu.cn, dzhangjc@sjtu.edu.cn Keywords: Concrete failure surface, Compressive load, Freeze-thaw, Evolution model Abstract.
And, comparing with flexural load, it seems that the research on frost resistance of concrete under compression is more attractive in engineering community.
Thirdly, the freeze-thaw failure of concrete in many researches is described by dynamic elastic modulus which is not applicable to estimate the loss of concrete strength in structural engineering.
The freeze-thaw failure of concrete in many researches is described by dynamic elastic modulus which is not applicable to estimate the loss of concrete strength in structural engineering.
Constitutive Equations for Engineering Materials[M].

College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P.
National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Nanjing 210098, P.
[2] S.Y.Wang, G.H.Liu, W.G.Du, J.Y.Shi, F.Dong: Journal of Hydraulic Engineering, Vol.7 (1999), p.22-26 [3] S.
Kim: KSCE Journal of Civil Engineering.

Mechanical Properties of Alite-Calcium Barium Sulphoaluminate Cement Concrete Zonghui Zhou 1,a, Lingchao Lu 2,b, Xingkai Gao 3,c and Xin Cheng 4,d 1 School of Materials Science and Engineering, Jinan University, Jinan 250022, China 2 School of Materials Science and Engineering, Jinan University, Jinan 250022, China 3 School of Materials Science and Engineering, Jinan University, Jinan 250022, China 4 School of Materials Science and Engineering, Jinan University, Jinan 250022, China a mse_zhouzh@ujn.edu.cn, bmse_zhouzh@ujn.edu.cn, cgxk01@163.com, d mse_zhouzh@ujn.edu.cn, Keywords: Mechanical properties; Structure; Alite-C2.75B1.25A3 S cement; Concrete Abstract.
Introduction Cement concrete is one of the most widely used building materials and it is used in civil engineering and construction for many years [1].

Finite Element Analysis and Experimental Investigation of Carbon Fiber Composite Circular Tube Lei Fua,Guoquan Taob , Yuni Huang and Zhe Wuc School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China aflfxq05@163.com, bac97531@163.com, cwuzhe@china.com Keywords: Composite Circular Tube; ANSYS; Axial Compressive Stiffness; Bending Stiffness; Finite Element Method Abstract.
Introduction Carbon fiber composite materials behave higher strength, higher stiffness than other engineering materials, which also share outstanding ability to resist fatigue and vibration, so they are widely used in structures of aircrafts[1,2].
References [1] Jiaxiang Zhao.Civil Aviation and Advanced Composite Materials[J].Hi-tech Fiber and Application,2007,32(2):6-9(in Chinese) [2] U.S.National Research Council,Commission on Engineering and Technical Systems.Aeronautics and Space Engineering Board,et al.New materials for next generation commercial transport[R].National Academy Press.Washington,D.C.1996(in Chinese) [3] Benveniste,Y:Mechanic of Materials,6,147(1987) [4] Jones,RM:Mechanics of Composite Materials,Taylor and Francis,New York(1998) [5] Chung,DDL:Carbon Fiber Composite,Butterworth-Neinemann,Boston,MA(1994) [6] Qusen Zhao.Advanced Composite Materials Manual[M].Beijing:China Machine Press, 2003.5:853-854 (in Chinese) [7] Zhaohui Zhang.
Examples for Engineering Structural Analysis of ANSYS11.0[M].Beijing: China Machine Press,2008.1:443-450(in Chinese)

Dynamic Analyzing the Vibro-Impact System with Time-varying Mass Yan Zhu1, a, Shulin Wang2, b, Shishun Zhu1, c 1Department of Automobile Engineering, Military Transportation University, Tianjin, 300161, China 2School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China azylzl@163.com, bwangshl@online.sh.cn, czhushishun@yahoo.com.cn Keywords: Vibro-impact with Time–varying Mass, Chaos, Bifurcation, Lyapunov Exponent Abstract.
Introduction Vibro-impact system with time-varying mass can be found widely in industry, for example, in chemical process, transportation, civil engineering, regulators etc.
Cui, Mechanical Science and Technology for Aerospace Engineering, Vol.27(2008),p.1035-1037.
Wang, Chinese Journal of Mechanical Engineering, Vol.33(1997),p.19-25.

Reliability-Based Robust Optimization Design for Lattice Tower Structure Xin Jiang a, Huijian Li b, Baifeng Gao c, Xi Liang d Department of Civil Engineering and Mechanics, Yanshan University, Qin Huangdao 066004, China jiangxin@ysu.edu.cn, ysulhj@163.com, gbf@ysu.edu.cn , ysulxi@163.com Keywords: Tower Structure; Reliability-Based Optimization Design; Robust Design Abstract：Reliability Analysis is applied into tower structural design and influence of uncertain factors is considered into the design.
Therefore we calculate the reliability by using independent assumption method, which is more simple and can satisfy the requirement of practical engineering.
Journal Engineering Mechanics ASCE,1989,115(7):1577-1582
Journal of Engineering Design. 2004,11(5):233-237. ( In Chinese) [9] Yimin Zhang , Wei Gao , Xiangqiang Song, Xianzhen Huang.
Engineering Mechanics. 2008, 25(11): 237-240. ( In Chinese) [10] Xiangdong He, Yimin Zhang , Qiaoling Liu, Bangchun Wen.