Search results

However, civil use of UAV is becoming more and more attractive regarding their unique abilities following from the lack of crew risk when performing dangerous tasks, unlimited flight lengths and so on.
One of the most important tasks relating to civil use of the UAV is safety.
Ottawa, Roskam Aviation Engineering Corporation, 1985

Rational Scale Control Model for Construction Workers Based on Hybrid Intelligent Techniques Ying Xie School of Civil Engineering, Northeast Forestry University, Harbin, 150040, China missxie20032003@163.com Keywords: Construction Worker, Scale Control, Intelligent Abstract.
In recent years, more than 8 million peoples received training focusing on common types of skill standards, including 7 million peoples acquiring certificates for civil professional jobs.

China 2 Civil Engineering School, Zhengzhou University, Zhengzhou, Henan, 450001，P.R.
The compatibility of deformation between soil and the retaining structure is taken into consideration in the EGB method, and the procedure of pit excavation or internal bracing strut deploying may be taken into account, so the deformation calculation has a good precision and the surrounding buildings and civil works may be protected effectively.

Vechtomov1,c 1Moscow State University of Civil Engineering, 26 Yaroslavskoye Shosse, Moscow, 129337, Russia 2Moscow State Technical University of Civil Aviation, 20 Yaroslavskoye Shosse, Moscow, 129337, Russia аEgor_yashin.pak@mail.ru, bOksana-feoktistova@yandex.ru, cpavel.vechtomov@gmail.com Keywords: Light guide, natural lighting, coefficient of natural lighting, programme complex.

An Improved Algorithm To Near Infrared Multispectral Ice Detection Jianshu Gao1,a, Renyi Han2,b, Zhijing Yu2,c, Wen Qiao2,d 1College of precision instrument and opto-electronics engineering, Tianjin University, Tianjin, 300072, China 2Airport Ground Special Equipments Research Base, Civil Aviation University of China, Tianjin, 300300, China agjianshu@yahoo.com, bhry0519@163.com, chit_yu@126.com, dwqiao_yjs09@cauc.edu.cn Keywords: near infrared multispectral; ice detection; detection unit; contrast; threshold value Abstract: In order to improve the accuracy of near infrared multispectral ice detection on aircraft wings, we present an improved unit detection algorithm to reduce the noise influenced by the ice detection system itself.
References [1] CHEN N X，SANG W M，CHEN Y C：Development and Technologies to the Study of Civil Aircraft Icing[J].

According to the relationship of tunnel depth, the foundation forms of adjacent building (structures), the importance and the location of the tunnel in Nanjing Metro Line 3, the formation properties of the site is combined to carry out the analysis of key and difficult points on the worksite monitoring objects, the implementation methods of the interval shield monitoring is studied, which provides reference for similar engineering projects.
Project Overview The engineering bid includes two intervals of Daminglu Station to Mingfa Square Station, Mingfa Square Station to city highway shield well, the interval design is in the form of single line, single hole circular section.
References [1] Chen Dewei, Zheng Xinguang, Xiang Haifan．Construction control of concrete cable-stayed bridge [J]．Journal of Civil Engineering，1993(1)：106—109

As a new environment-friendly fiber material, the basalt fiber has been used in engineering construction to a certain extent.
Introduction The structure of reinforced concrete is increasingly used widely in civil engineering, but the workability, crack resistance and corrosion resistance of concrete have always been the problems difficult to resolve in the engineering industry.
At present, the basalt fiber has been used in engineering construction to a certain extent.
Xu: Materials Science and Engineering Vol. 505 (2009), p. 178 [4] W. bin, H.
Song: Materials Science and Engineering Vol. 527 (2010), p. 4708 [5] M.

The soft soil foundation consolidation numerical Simulation based on the model of modified cam-clay Xiaojie Gu1, a, Taiquan Zhou1,b and Song Cheng1,c 1 School of Environment and Civil Engineering, Jiangnan University, Wuxi, China, 214122 axgyx2007@126.com, b 846158321@qq.com, c 1005733514@qq.com Keywords: abaqus embankment, the soft soil foundation, consolidation and settlement Abstract The clay layer finite element analysis model , which is established by using finite element program to simulate the embankment filling , takes the intercoupling between water and clay in drainage consolidation process into full account.
The use of the effective stress principle consider the characteristics of clay such as nonlinerity , large deformation and so on ,carry out the plane strain finite element analysis on the clay and solve a series of engineering problems.
Some bad engineering geological condition soft clay often occurs in expressway subgrade construction.
(3) Clay is a highly nonlinear anisotropic material; we need to carefully and earnestly carry out on-the-spot investigation and measurement, not be superstitious in numerical value and software, reducing the loss of personal property as much as possible References [1] Zhang FeiKang.: ABAQUS application in the geotechnical engineering.

Analysis of Differential Settlement Influence on Internal Force of Box Culvert Structure Fangding He1, a, Jinping Cui 2,b ,Jun Sui3, Yifan Yu4 1 Hydraulic Research Institute of Shandong Province,Jinan,250014,China 2 Comprehensive Agricultural Service Center of Jingzhi Town, Anqiu,262100,China 3 Shandong Province Water Conservancy Bureau,Jinan,250013,China 4 School of Civil Engineering, Shandong University,Jinan,250061,China a6974554@126.com, baqslgh@163.com; Keywords: Soft soil foundation, the structure, differential settlement, structure internal force Abstract: The foundation settlement of soft soil highway engineering is too large, resulting in pavement wave-like because of differential settlement between the structure and adjacent soft soil foundation, which seriously impacts on traffic safety.
Howerver, because of the silt layer thickness, uneven distribution, the engineering poor properties of soft soil and other reasons, the soft ground treatment of the settlement difference between the foundation of special structure and the general settlement has not been solved well.
Highway engineering, 2009, 34(1): 77-80

Comparison of Stability and Deformation Performance of Cable-Braced Grid Shell with Different Section Forms of Steel Tube Zhiying Zhang1,Xun Zhao1,aand HongyangWei1 1 School of Human Settlement and Civil Engineering, Xi’an Jiaotong University,Xi′an, Shaanxi, 710045,China axjtu.zx@stu.xjtu.edu.cn Key words:Cable-bracedgridshell, Section forms, Stability, Deformation performance Abstract.Cable-braced grid shell is a hybrid structure combined rigid steel tube and flexible cable.
Economic and reasonable section form of steel tube is proposed as a reference for the practical engineering design.
Introduction At the end of the 20th century, Germany engineer JorgSchlaichproposed cable-braced grid shell whichadopted quadrilateral meshand diagonally arranged prestressed cable [1], and the stability of the structure wasenhanced via increasing in-plane stiffness,as shown in Fig.1.Cable-braced grid shell with quadrilateral meshis convenient for the glass roof to process and install.
For the same cross section of steel tube, the variation law as for the effect of section form of steel tube on the stiffness and stability of cable-braced grid shell is proposed via the nonlinear finite element (FE) method in this paper, which provided an economic and reasonable section form of steel tube as a reference for the practical engineering design.