Search results

Research on Risk Level of Debris Flow in an Area Qin nian Yang 1a, Shuai tao Wu1b, Zhi Li2c 1School of Civil Engineering Nanyang Institute of Technology Nanyang, Henan 473004, China 2Hydro-engineering Team of Sichuan Metallurgical Geology&Exploration Bureau, Sichuan 610501, China aemail: newyear1230@163.com, bemail: 113816977@qq.com, cemail: 402894195@qq.com Keywords: debris flow; characteristics; risk level; risk evaluation.
Tab.2 The calculation results of peak discharge of debris flow P Qp(m3/s) γc(t/m3) γw(t/m3) γH(t/m3) Φc Dc Qc(m3/s) 1% 23.16 1.8 1.0 2.5 1.14 2.0 99.12 2% 20.14 1.8 1.0 2.5 1.14 2.0 85.39 According to “code of engineering exploration for debris flow disaster prevention”, when the frequency of occurrence is 1% and 2% (ie once per 100 years and once per 50 years respectively), a medium-scale debris flow will occur.
Preventive measures, which integrate with biological engineering, such as planting trees, grass slope reinforcement, may be adopted and taken for erosion control.
Soil Engineering and Foundation, 2013, 27(2): 111-114.

Research on the shear strength properties of expansive soils Yi Chen 1,2,a, Jing Zhao 1,b , Xiao-hong Hu 1,c 1School of Civil Engineering and Architecture, Xi'an University of technology, Xi'an,710048 ,China； 2College of Architecture and Transportation Engineering, Guilin university of electronic technology, Guilin,541004,China; achenyi1015@guet.edu.cn, bzhaoj2000@163.com, chuxiaohong@xaut.edu.cn Keywords: shear strength; dry density; initial water content; expansive soil Abstract: The shear strength of expansive soils is now a key geotechnical problem.
Many researches have been done on the engineering properties of expansive soils [2-5].
(5) Referring to Eq.4 and Eq.5, engineers could determine the variation of shear strength parameters with initial water content and dry density of the Xinxiang expansive soil.
References [1] Q.Y.Fan, in: Expansive soils and engineering (Science Publication, Beijing 2008)

Quasi-static Out-of-plane Compression of Hollow Integrated Woven Textile Sandwich Composites Wei Su1,3,a, Yong Xiang1,b, Yi-fan Jiang1,c, Shi-qing Huang1,2,d, Hua-lin Fan4,e and Ren-huai Liu 1,2,f 1 Department of Mechanics and Civil Engineering, Jinan University, Guangzhou, Guangdong, 510632, China 2 MOE Key Lab of Disaster Forecast and Control in Engineering, Jinan University, Guangzhou, Guangdong, 510632, China 3 The Fifth Electronics Research Institute of Ministry of Industry and Information Technology, Guangzhou, Guangdong, 510610, China 4 College of Mechanics and Materials, Hohai University, Nanjing 210098, China a suwei5@126.com, b 469242169@qq.com, c 806020408@qq.com, d thuangsq@jnu.edu.cn, e fhl02@mails.tsinghua.edu.cn, f lrh@jnu.edu.cn Keywords: Woven Textile Sandwich Composite, Quasi-static Compression, Stress-strain Curves.
Introduction Fiber-reinforced composite materials which have the advantage of high specific stiffness, high specific intensity and low density, is widely used in the applications of differently engineering field.
Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2008. 472(1-2): 52-58
Composites Part B-Engineering. 41(8): 686-692

Maintainability prediction is a new work in the field of products for civil use in our country.
[2] Ebeling C.E., An introduction to reliability and maintainability engineering, US: McGraw-Hill Companies, 1997, pp. 192-202
Dhillon, Engineering Maintainability: How to Design for Reliability and Easy Maintenance, Elsevier Science & Technology Books, June 1999, pp. 73-74
[5] Hao Jian-ping, Zhou Hong, Gan Mao-zhi, A Maintainability Prediction Method Considering Environmental Impacts and Cost, International Journal of Plant Engineering and Management, 2002, 7(4): 179-184
[6] Zhang Sheng-tao, Lou Shou-chun, Tang Yang-chun, Status Quo and Expectation on the Application of the Methods of Maintenance Forecast, Aviation Maintenance & Engineering, 2006, 24(4): 47-49

Study on the Treatment of Ammonia-Nitrogen Wastewater by Oxidization methods Lin Hao1, a,Yu Chen*2,b,and Xue Cui3,c 1Officer's College of the CAPF,Chengdu610213, China 2Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu610031, China 3Special Police College of the CAPF,Beijing 100621, China a21822940@qq.com, b273620202@qq.com,c61656333@qq.com Keywords:Oxidization, Ammonia-Nitrogen, NaClO, Wastewater Treatment Abstract.NaClO is chosen as the best oxygen among Ca(ClO)2 and ClO2.The best experimental factors were achieved through the single factor experiment and orthogonal experiment, according to these factors, the actual wastewater project was verified.
In the point of the redox reaction of ammonia nitrogen, ammonia nitrogenis in thenegative trivalent state and it has strong reductionreaction.Therefore, this paper based on removal efficiency of ammonia in the effect of oxidation reduction ofproperty agent ammonia nitrogen, adding adequate oxidants in sewagehas the instruction significance to the actual engineering.
Fig.1 Effect of NaClO amount on NH3-N removal rate Fig.2 Effect of pH on NH3-N removal rate Fig.3 Effect of Time on NH3-N removal rate Verification experiment on actual engineering.In order to get the further study the sodium hypochlorite in actual wastewater project for ammonia removal effect, the author take Sichuan farms aquaculture wastewater, using water and diluted water samples to react with sodium hypochlorite.
This gives us a good revelation: in breeding or other high concentration ammonia nitrogen wastewater engineering, followed bythe traditional anaerobic aerobic, ammonia cannot reach the national level emissions standards.
Water Research, 2007, 41(11): 2457-2466 [2] LuoXian-ping,LAI Hua,LI Jian-chang,Yan Qun.Experimental study on different modifiedzeolite's absorptionof ammonia-nitrogen[J].N.Electric Technology and Civil Engineering.2011,1438-1453

The Generation of a Three-Dimensional Aggregate Model for Concrete Based on Unity3D Boguang Luo1, a, Heying Qin1,b , Chunxiao Huang1,c 1Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Department of Civil Engineering, Guilin University of Technology, Guilin, Guangxi, 541004, China aluoboguang@126.com, bqinheyinglcx@163.com, c842804980@qq.com Keywords: Three-Dimensional Aggregate Model, Simulation Analysis, Unity3D, Qhull.
Acknowledgments The authors acknowledge with thanks financial assistance by Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering (No.11-CX-04).
Journal of Hydraulic Engineering, 42:11, 1379-1383. (2011). ( In Chinese) [2] G.T.
Journal of Hydraulic Engineering, 37:6, 662-667. (2006). ( In Chinese) [4] X.G.SONG and Z.C.YANG: Random Walking Algorithm for Polygonal Concrete Aggregate Packing.

Introduction So far, there are a great number of floor structures of different types in the construction engineering sector.
Fish, Multiscale analysis of solid, waffle, ribbed and hollowcore reinforced concrete slabs, Computer Methods in Applied Mechanics and Engineering. 348 (2019) 139-156 DOI: 10.1016/j.cma.2019.01.022 [6] H.
Lyu, Influence of T-type rib on flexural fatigue behavior of concrete composite slab with precast prestressed ribbed panel, Journal of Civil, Architectural and Environmental Engineering. 2(38) (2016) 11-20..
Burgess, Yield-line plasticity and tensile membrane action in lightly-reinforced rectangular concrete slabs, Engineering structures. 138 (2017) 195-214 [14] K.A.
Izzuddin, Experimental and analytical assessment of ductility in lightly reinforced concrete members, Engineering structures. 9 (32) (2010) 2729-2743

Particulate Composites with Wastes from Treated Wood and Tire Rubber Marília da Silva Bertolini1, a*, André Luis Christoforo2, b, Carlito Calil Neto3, c, Francisco Antonio Rocco Lahr3, d. 1 Department of Materials Science and Engineering, São Carlos Engineering School, São Paulo University - USP, Av.
Trabalhador São-carlense, 400, Center, 13566-590, São Carlos, SP, Brazil. 2 Department of Civil Engineering, Federal University of São Carlos - UFSCar.
Washington Luís highway, km 235 – SP 310, Guanabara garden, 13565-905, São Carlos, SP, Brazil. 3 Department of Structural Engineering, São Carlos Engineering School, São Paulo University - USP, Av.

Estimation method of cable tension based on iterative algorithm and optimization algorithm Yong-hui Huang1, a, De-quan Luo2, b, Rui Rao3, c 1Guangzhou University-Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, China 2 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China 3 Guangzhou University-Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, China ahuangyh@gzhu.edu.cn, bnhroadluo@sohu.com, craorui@gzhu.edu.cn Keywords: Cable tension estimation; frequency method; iterative algorithm; optimization algorithm Abstract: The vibration method is usually used for field measurement of cable tension of cable system bridges.
Moreover, Eq.(5) calculates cable tension through fundamental frequency, but it is difficult to measure the fundamental frequency of structure in most cases especially in engineering applications.
So each method is adoptable to identify the cable tension, the optimization method is used in the engineering project below. 4.

Seismic Time-history Analysis of Gravity Dam Based on Nonlinear Finite Element Method He Zhu1, a, Gang Wang,1,b, Zhenyue Ma1,c and Yikang Su1,d 1 School of Civil and Hydraulic Engineering, DLUT, Dalian, 116023, China azhuhe2zm@mail.dlut.edu.cn, bydwanggang@163.com, cdmzy@dlut.edu.cn, dsyk@mail.dlut.edu.cn Keywords: Cohesive model, Dynamic stability, Damage, Deep anti-sliding, Gravity dam Abstract.
References [1] ZHOU Wei, CHANG Xiaolin: Rock and Mechanics (In Chinese) Vol.27(2006), p. 161-166 [2] Liu Jian, Feng Xiating: Chinese Journal of Rock Mechanics and Engineering, Vol.21(2002)，p.993-998
[3] LUAN Mao-tian, WU Ya-jun, NIAN Ting-kai: Journal of disaster and mitigation engineering (In Chinese) Vol.23(2003)，p.1-8 [4] Zienkiewicz O C, Humpheson C and Lewis R W: Geotechnique Vol.25(1975), p.671-689 [5] HUShaowei, LU Jun: JOURNAL OF HYDROELECTRIC ENGINEERING(In Chinese) Vol.28(2009), p. 37-77 [6] Chen Jianyun, Hu Zhiqiang, LinGao: Chinese Journal of Computational Mechanics(In Chinese) Vol.28(2009), p. 43-49 [7] Park K.
[8] Cornec A, Scheider I, Schwalbe K:Engineering Fracture Mechanics Vol.70(2003),p.1963-1987 [9] Su X, Yang Z, Liu G:Acta Mechanica Solida Sinica Vol.23(2010),p.271-282