Search results

The Construction Technique of the Beam Slab Structure Being Filled Large-span Prestressed Lightweight Materials Jun li Yuan Jun Li Yuan Pu Yang Vocational Technical Institute, Henan Province, China Key words: large span prestressed light material combined unit in cast-in-place concrete beam slab Abstract: With the rapid development of Chinese economy, more and more requirements of large public buildings, large space and has more functions, the engineering design, construction and bring many technical problems, in order to solve the technical problem, the construction of scientific research departments continue to research and development of new materials, new technology, new methods of construction, city of Puyang stadium the tennis project 44M*24M large span structure, adopts the ‘made of light material combined unit filled prestressed concrete cast-in-situ slab’ structure technology, solves the light, save steel, concrete, reduces the structure thickness, good economic practicability
Because of the cold weather and the average temperature at 5 degrees below zero, we take the engineering circumferential joint plug closely.
Concrete strength was detected from Tongda engineering testing Services Company in Puyang city with the conditions of test specimen and the springback test On February 15, 2011, and the strength met 95% of the design requirements and achieved the tensioning conditions of prestressed tendons.
The application prospects of the prestressed cast-in-place beam and slab structure filed by large span-lightweight materials (1) The prestressed concrete cast-in-situ hollow slab filled by lightweight materials can save 30% ~ 50% concrete and save 25% ~ 40% steel while assuring overall strength and rigidity
It is the developing direction of large span structure because of its saving raw materials, reducing the dosage of steel and concrete.

Non Destruction Testing Method applied in Bridge Engineering Yungang Lu1,a, Lichun Dai2,b 1Hunan Provincial Expressway Administration，Changsha, 410001,China 2The Third Engineering CO.
,LTD of CCCC.Second Highway Engineering Bureau, Xi’an,710016,China a59209941@qq.com (corresponding author), b goodluck0566@163.com Keywords: Bridge Engineering; damage assessment; Non Destruction Testing (NDT) Abstract.
The application of NDT technology in bridge Engineering.
Civil engineering quality nondestructive testing technology.
Civil engineering nondestructive testing techniques and their applications.

Petroleum Engineering HSE risk management" is one of the important quality course content.
In order to adapt to the petroleum engineering personnel safety requirements to meet China's oil industry international strategy, since the start of 2003 our school set up "petroleum engineering HSE Risk Management" course in petroleum engineering undergraduate course specialty teaching, good production and research cooperation promote the reform of the curriculum and construction.
Edit in chief by my school teachers, other five oil university faculties supervised the Eleventh Five Year Plan oil and gas industry materials; "petroleum engineering HSE Risk Management" was published in 2008, to fill the gaps in the construction of the course materials.
The chapter of “petroleum engineering safety evaluation” adds the "Job Safety Analysis Practice" content, which is very simple for the risk identification and control of petroleum engineering, the tool is easy to operate.
Conclusion Petroleum Engineering HSE risk management" is one of the important quality course content.

The roof of non–engineered building varies from locality to locality and dependent on the availability or materials and traditional building practices in that particular area.
Materials.
Materials Corrosive roof sheeting and fastener and size of structural members.
Materials Corrosive roof sheeting and fastener and size of structural members.
Journal of Structural Engineering, 124 (1998) pp. 1192-1201

Experimental Study on Removal Characteristics of Ceramic Materials in Ultrasonic Aided High Efficiency Lapping Zhang Changjuana, Jiao Feng and Zhao Bo School of Mechanical and Power Engineering, Henan Polytechnic University, Henan,454000, China azhangcj@hpu.edu.cn Keywords: Ceramic materials, Ultrasonic aided lapping, Material removal rate Abstract.
However, due to their low plasticity, frangibility and non-conduction, engineering ceramics materials are difficult to process, especially in ultra-precise surface fabrication.
Niihara: Nanostructured Materials.
Advanced Materials Research, 2012, 411:102-106
Study on the Theoretic Model of Ultrasonic Polishing[J].China Mechanical Engineering, 2005,16(8):664-666

It is an artificial way to extracted genetic material, such as DNA, which is required in a certain donor biological gene materials.
In 1973, they inserted the exogenous gene into plasmid DNA, and mixed the new DNA, introduced Escherichia coli into these mixed materials, which achieved the gene transfer success.
This is the first artificial planned implementation of genetic engineering in the world, which declared the birth of genetic engineering.
In addition, the raw materials used by the genetic engineering are generally renewable and recycled creatures that do not need to consume large amounts of non-renewable resources, and realizes the technology of clean, low consumption, and the purpose of sustainable development.
Measure of Value and Ethical Value Value is about the nature of the self sustaining and development, human factors for all human practice ontology, including any form of materials.

State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, China 2.
The study of hydro-thermal-mechanical process coupling in unsaturated porous material is very important due to its close relationship with environmental geomechanics engineering.
Geotechnical material is one of the most widely used porous materials.
Nowadays, many programs prevail, but they are not able to do an accurate numerical analysis on the engineering structure of porous material under saturated or unsaturated conditions.
Recently, the program developed by Padua University, Italy for the hydro-thermal-mechanical analysis of porous material (COMES-GEO) can well solve these engineering problems.

State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai,200092, China; 2.
Engineering Structures. 1998;20:323-335 [6] Green PS, Sause R, Ricles JM.
Research progress on the mechanical property of high strength structural steels. 1st International Conference on Civil Engineering, Architecture and Building Materials, CEABM 2011, June 18, 2011 - June 20, 2011.
Journal of Structural Engineering. 2000;126:1268-1278 [12] Fukumoto Y.
Engineering Structures. 1996;18:786-791

Research on the Social Discount Rate for the Whole Life Cycle Engineering Cost Management Xiaodong Han 1, a, Ting Luo 2,b 1 Department of Asset Management, Beihang University, 37 xueyuan Road, China 2 School of Transportation Science and Engineering, Beihang University, 37 xueyuan Road, China ahxd8315@yahoo.com.cn, bTluo@buaa.edu.cn Key words: Whole Life Cycle Costing, River-influx Model, Social Discount Rate.
In this paper, we divided the Engineering Cost into three parts of labor costs, material costs and machinery costs.
It generally considers the cost of construction, operating and maintenance for an engineering project to achieve reasonable architecture designing and construction materials’ selection, which can reduce the whole Life Cycle Cost and obtain a good quality of design at the same time.
Cost Engineering, 1996(10), p.15-18
Cost Engineering, 1996(10), p.15-18

The Theoretical Research about The Piezoelectric Material’s Generating Capacity on Road Rui Li1, Xiao Yicheng1, Jianzhong Pei1 * and Zhao Xiaokang1 1Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, 710064, PR China *email: peijianzhong@126.com Key words: Road engineering; Piezoelectric material; Road structure analysis; Power generation capacity Abstract: This article determine the wheel load on the role of piezoelectric vibrator in the way as the low-frequency vibration force through analyzing the wheel load, and the loading frequency is 10Hz;in this paper, combining with asphalt roadbed structural response, we get that the piezoelectric conversion device that between the above layer and the middle layer generate optimal performance adopting the theoretical calculation, a single piezoelectric vibrator can generate the electricity by a 2.62 mJ, what provides a theoretical support for the pavement performance of the piezoelectric
After hundred years of development, the types of piezoelectric materials develop from the original piezoelectric crystal to the piezoelectric ceramics, the piezoelectric polymer, the piezoelectric composite material and piezoelectric alloys and other materials.
But piezoelectric ceramic materials belongs to brittle material, it will be broken when the piezoelectric materials are closed to the pavement, so we should consider the mechanical characteristics of piezoelectric materials; moreover, pavement will stand axle load for millions of times and even hundreds of millions of times in design working life, too much stress can cause fatigue damage of piezoelectric materials, therefore, not only the theoretical data, but also the material characterization and the coupling of the material characterization and the pavement should be taken in consideration to judge the position of the piezoelectric materials.
The vibration energy harvesting technology based on piezoelectric materials research [D].
The research about the city road and its power generation device with piezoelectric materials [D].