Search results

Dynamic Load Effects of PVA Tail Sand Cement Base Composite Materials Wenbo Baoa, Shaofeng Zhang*, b, Gaohao Dia, Weiwei Ji, Lihui Qu School of architecuure& civil engineering, Shenyang university of technology, shenyang110870, China awenbobao@163.com, b380952896@qq.com, c964002457@qq.com Keywords: Impact energy; Ductility index; Toughness; Tailings cement-based composite materials Abstract.
So the engineering applications recommended replacement rate of the tailings is 50%.
Introduction Engineered cementitious composite (ECC) is a new type of ultra-high toughness cementitious composites material, which has been studied and developed by LI Victor C at University of Michigan in the early 1990s.
ECC is a fiber reinforced cementitious composites with specially selected short random fibers designed on the basis of micromechanics and engineered [1-4].

Stability Prediction of Intensification of the Lime Sludge Impoundment SLAVIK Ivan1,a* 1Slovak University of Technology in Bratislava, Faculty of Civil Engineering, Department of Geotechnics, Radlinskeho 11, SK-813 68 Bratislava, Slovakia aivan.slavik@stuba.sk Keywords: impoundment, lime sludge, shear strength, slip surface, safety factor, dam, subsoil Abstract.
An impoundment is an engineering construction used for the safe deposition of unexploitable waste from industrial and mining facilities.
Introduction From a design and material point of view, impoundment is a markedly non-homogeneous engineering construction.
A stability analysis of an impoundment is a demanding engineering task.

Research on Crack Prevention Technology for Filler Wall of Concrete Block Dingtang Wang College of Civil Engineering, Anhui University of Architecture, Hefei, 230022, China wdt88@163.com Keywords: Research, Crack Prevention Technology, Filler Wall, Concrete Block Abstract.
It helps to limit or /and eliminate the block wall cracking, promote the healthy development of block, and provides valuable references for the similar engineering.

Numerical simulation of the influence of weld model on the response of stiffened plates under blast loading Xin-ming Zhu1, a, Hao Zhan1 and 2, b and Zhi-gang Jiang1, c 1Department of River-Crossing, College of Basic Education for Commanding Officers, National University of Defence Technology, Changsha, Hunan 410073, P.R.China 2College of Civil Engineering, Hunan University, Changsha, Hunan 410082, P.R.China axinming19860108@163.com, bzhan1234567890@tom.com, cjzg13508489165@yahoo.com.cn Keywords: blast shock, stiffened plates, weld, numerical simulation Abstract: Stiffened plates are used in a wide variety of engineering structures.

Powder Particle Size Measurement with Digital Image Processing Using Matlab Licai WU, Chuang YU College of Architecture and Civil Engineering, Wenzhou University Zhejiang Wenzhou, China ac-yc@wzu.edu.cn, geoyuchuang@hotmail.com Keyword: powder, size measurement, Matlab, digital image processing, SEM Abstract.
The application of powder particle size measurement in engineering field are introduced, the major powder particle size research methods are also included.
In particular, with the development of industry and the progress of engineering technology, particle size measurement is especially important for the research of powders[2].

The monitoring and analysis of surface subsidence of Soft soil rock large section of subway tunnel shield construction Jinkui Li1, a, Bingwei Yan1,b and Yongjian Shi1,c 1 Dalian University Civil Engineering College, Dalian 116622, China ajinkee@126.com, bdabing14144@sina.com, c1083220407@qq.com Keywords: soft soil and rock; large section subway tunnel; rock stability; monitor.
The research results have reference value for the future similar engineering design and construction.
In the direction of tunneling, every 20m arranged monitoring sections of surface subsidence and assigns 5 points for each section. when Buried a surface subsidence monitoring points , the first task is to use the marine pile driver to make a diameter of 108 mm, 300 mm deep hole, than squeeze a 22 reinforced bar into the hole about 500 mm, a diameter of 108mm, about 300mm deep hole should be drilled with a engineering rhinestone labeled on the top of reinforced bar and polished the top smooth and the top shall not exceed out of the road plane, with concrete infill at last.

Study on Excavation-induced Prmeability Changes in Cay Stone Shanpo Jia1,2, a, Weizhong Chen2,b 1 School of Urban Construction, Yang tze University, Jingzhou 434023, China 2 School of Civil and Hydraulic Engineering; Shandong University; Jinan 250061, China aemail:jiashanporsm@163.com, bemail:wzchen@whrsm.ac.cn Key words: Clay stone, Hydro-mechanical coupling, permeability evolution, damage, self-healing Abstract.
According to the engineering geology and layout of the high-level radioactive waste repository, the quasi-3D finite element model is applied for the connecting gallery.
Engineering geology, Vol. 61(2001), p.163-180
Hydro-mechanical coupled creep damage constitutive model of Boom clay, back analysis of model parameters and its engineering application [Ph.D.Thesis].

Study on Statistical Parameters of Resistance of Steel Highway Bridge Reliability Design in China Kun Li College of Civil Engineering and Architecture, China Three Gorges University, University Avenue 8, Yichang, 443002, Hubei Provision, P.R.
It has been clarified in the GB/J50283-1999 Unified Standard for Reliability Design of Highway Engineering Structures (Hereafter refers to as Highway Uniform Standard) [2] that the design method of probability limit state based on the structure reliability is the general principle, thus it is imperative to establish a new national specification for steel highway bridge.
[2] Ministry of transport of China.GB/J50283-1999 Unified Standard for Reliability Design of Highway Engineering Structures.
[4] Guoxing Cheng: Journal of Chongqing Architecture Engineering Institute.

Optimization Research of construction Inventory Management on site Based on Inventory Theory Aijuan Zou (College of civil engineering and architecture, Southwest university of science and technology, Sichuan province mianyang China, 621010) aemai:oncekelly @126.com Keywords: construction materials, inventory management, stocks optimization.
And construction is easily affected by weather, seasons, engineering change notice and other factors.
(2) In the quantitative order, material engineer of contractor needs to estimate the material consumption speed and transportation time according to previous experience to confirm the control point order.
When the stocks are inferior to the predetermined control point, material engineer will give order notice to purchasing stuff.

The stable map is shown in Figure 3.Pick up the stable identification results, the results of modal parameters obtained in Table 1, and the results of the finite element method were compared in Fig.4~Fig.7 Table1 The results of experiment and calculation Modal order Test Frequency (Hz) Damping ratio (%) ANSYS Calculation (Hz) 1 1.150 2.23 1.089 2 1.250 0.59 1.114 3 1.600 7.12 1.522 4 2.575 1.59 2.705 5 3.250 1.44 3.351 6 3.650 1.27 3.636 Order/n 1 2 3 4 5 6 7 8 9 10 5 10 15 20 25 30 35 40 Frequency/Hz Fig.3 Recognition results of stable map Fig.4 The 1st~the 3rd mode shape (Modal Experiment) Fig.5 The 1st~the 3rd mode shape (ANSYS Calculation) Fig.6 The 4st~the 6thmode shape (Modal Experiment) Fig.7 The 4st~the 6th mode shape (ANSYS Calculation) The conclusion High-voltage transmission tower is extremely important lifeline power engineering facilities, ensure the main structure system in various
Shanghai: Shanghai Jiao tong University Press，2000 [2]Peeters B,De Roeck G.Reference Based Stochastic Subspace Identification in Civil Engineering.
Inverse Problems in Engineering,1999,Vol.00,pp.1~28
Mechanical Systems and Signal Processing,1999,13(6),855~878 [4]James G H,Carne T G,Lauffer J P.The natural excitation technique(NExT)for modal parameter extraction from operating Structural Engineering and Mechanics, 2004, 17(3-4):429~444