Welcome
Digital library of construction informatics
and information technology in civil engineering and construction
 

Works 

Search Results

Facilitated by the SciX project

Hits 1 to 7 of 7

Alekhin V,Antipin A,Gorodilov S,Khramtsov S

Numerical simulation of wind loads on high rise buildings

Abstract: Article presents a methodology of the numerical simulation of the wind on high-rise buildings, which was developed by the Department of Computer-aided design of structures of the Ural Federal University named after the first President of Russia B.N. Yeltsin. Paper includes the results of researches on development of a technique of determination of wind pressure upon high-rise buildings by means of numerical modeling in an ANSYS package. The investigation was carried out within the grant of the Russian Academy of Architecture and Building Sciences. The results are applied to calculation of wind pressure upon a number of high-rise buildings under construction in Yekaterinburg City (Russia). Simulation is performed in the program ANSYS. The simulated building is placed in a domain that is the numerical analogue of wind tunnel. Domain sizes are chosen in such a way that simulated buildings do not affect the flow of air on its boundaries. Shear stress transport (SST) turbulence model has been used. This model effectively combines the stability and accuracy to the standard k-? model in the areas, which are placed near the walls and the effectiveness of the k-e model at a distance from the walls with a smooth transition between them (input expansion functions). For the numerical solution of the governing equations the finite volume method was used (FVM). The scale of the turbulence is assumed to be 200-300m. Use of the developed technique is shown on the example of calculation of wind pressure and wind velocities in pedestrian area for high-rise building under construction in the City of Ekaterinburg.

Keywords: high-rise building,wind impact,simulation,wind loads

DOI:

Full text: content.pdf (1,046,932 bytes) (available to registered users only)

Series: convr:2013 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Bella Nguyen and Ioannis Brilakis

Minimising Misclassifications of Over-Height Vehicles Due to Wind

Abstract: Over-height vehicle strikes with low bridges and tunnels are an ongoing problem worldwide. While previous methods have used vision-based systems to address the over-height warning problem, such methods are sensitive to wind. In this paper, we propose a constraint-based approach to minimise the number of over-height vehicle misclassifications due to windy conditions. The dataset includes a total of 102 over-height vehicles recorded at frame rates of 25 and 30 fps. At this frame rate, we analysed sampling rates to determine the sufficient number of positive frames required to provide accurate warnings to drivers. Optical flow and KLT feature-tracker algorithm was used to detect and track feature points of motion. Motion captured within the region of interest was treated as a standard two-class binary linear classification problem with 1 indicating over-height vehicle presence and 0 indicating noise. The algorithm performed with 100% recall, 83.3% precision and false positive rate of 8.3%.

Keywords: Bridge Strike, Tunnel Strike, Over-Height Vehicle, Over-Height Vehicle Detection System, Bridge Strike Prevention

DOI: https://doi.org/10.24928/JC3-2017/0249

Full text: content.pdf (3,818,410 bytes) (available to registered users only)

Series: jc3:2017 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


C Lu, S Lu, X Wang

Wind-Induced Dynamic Analysis of the Arched Tensegrity Structures in Time Domain

Abstract:

Keywords:

DOI:

Full text: content.pdf (377,322 bytes) (available to registered users only)

Series: w78:2014 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Edward Potetyunko, Angela Karsian, Issac Herskowitz, and Leonid Srubshchik

Wind Response Of The Spherical Structure With Film Cladding

Abstract:

Keywords:

DOI:

Full text: content.pdf (595,231 bytes) (available to registered users only)

Series: w78:2006 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kilar V

Computer program for linear and nonlinear analysis of tall buildings subjected to horizontal loading

Abstract: In Slovenia, as in many other countries where earthquake or wind loading can be excessive, the stiffness of a tall building is governed by horizontal loading. The paper presents a computer program for linear (static and dynamic) and for nonlinear push-over analysis of symmetric and asymmetric building structures subjected to horizontal loads (such as wind or earthquake loads). The paper briefly describes the used mathematical model and the analysis method for nonlinear static analysis. As an example, the program is used for the nonlinear pushover analysis of several (symmetric and asymmetric) variants of four-storey reinforced- concrete building structure consisted of frames and walls. The results, that are presented in a form of normalized charts, give a valuable information about the nonlinear behavior of different structure variants.

Keywords:

DOI:

Full text: content.pdf ( bytes) (available to registered users only)

Series: ecce:1997 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Moe M. S. Cheung and Ben Y. B. Chan

Vehicle-Wind-Long Span Bridge Interaction And Its Effect On Speed Limit And Vehicle Stability

Abstract:

Keywords:

DOI:

Full text: content.pdf (918,662 bytes) (available to registered users only)

Series: w78:2006 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Yong Cho, George Morcous, Koudous Kabassi, Jill Neal

BIM-Driven Economic Analysis for Zero Net Energy Test Home

Abstract: This paper presents a case study that utilized a Building Information Model (BIM) for 5D cost estimation and theoretical energy analysis to support economic study of a research test bed called the Zero Net Energy Test House (ZNETH). The ZNETH project is being designed and built with the goal of consuming a negligible amount of energy by offsetting usage through energy conservation and residential energy generation. To offset the consumed energy of the household occupants, a wind turbine and solar panels were selected as the energy production resources for this project along with several sustainable materials and systems such as Insulated Concrete Foundation (ICF), Exterior Insulation Finishing System (EIFS), and a closed loop geothermal system. By integrating the highly graphical and intuitive analysis with a BIM of the house, this investigation introduces strategies to include such renewable energy options and sustainable building materials for the ZNETH to predict its economic benefits. The theoretically consumed and generated energy levels were analyzed. It was found that the current design of ZNETH does not have greater economic benefit than cost. In addition, this research conducted sensitive analyses for better design and construction material selection with various sustainable design alternatives. Finally, theoretical suggestions are presented to assist ZNETH in meeting its net zero energy goal and economic returns. Findings from this research will be used for designing ZNETH II which is currently under investigation.

Keywords: BIM, 5D cost estimation, zero net energy test house, energy analysis, economic analysis

DOI:

Full text: content.pdf (165,906 bytes) (available to registered users only)

Series: w78:2010 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


No more hits.

 

hosted by University of Ljubljana



includes

W78




© itc.scix.net 2003
Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003