A prototype online database-enabled design framework for wind analysis/design of low-rise buildings

doi:10.1007/s11709-015-0329-3

Front. Struct. Civ. Eng.

2016, Vol. 10

Issue (1) : 121-130 https://doi.org/10.1007/s11709-015-0329-3

RESEARCH ARTICLE

A prototype online database-enabled design framework for wind analysis/design of low-rise buildings

Dae Kun KWON¹(

), Ahsan KAREEM¹, Deepak KUMAR², Yukio TAMURA³

¹. NatHaz Modeling Laboratory, Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, USA
². Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600036, India
³. Department of Architectural Engineering, Tokyo Polytechnic University, Tokyo 243-0297, Japan

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Abstract

This study presents a development of an advanced cyberbased database-enabled design module for low-rise buildings (DEDM-LR) which provides estimation of the wind-induced responses for main wind force resisting frames by making direct use of pressure time histories measured at a large number of pressure taps over a suite of building models. These responses may be considered in lieu of code-specified load effects in which the overall accuracy may be influenced by the inherent simplifications in codes. In addition, this new automated approach is particularly attractive and advantageous as it allows a web-based online analysis/design via intuitive user-friendly interfaces for both the input and output in terms of familiar web-style forms that are nowadays very common in most of web-based services. Presently, the DEDM-LR hosts an aerodynamic database developed by the Tokyo Polytechnic University (TPU), Japan for a variety of building configurations like flat, gable, and hip roofs under suburban terrain flow condition with immediate application to other databases. The paper shows the efficacy and validity of the DEDM-LR by walking through its details and examples on selected gable-roofed buildings. The architecture of DEDM-LR platform offers the ability to pool resources by hosting other databases that may become available in the near future.

Keywords wind loads low-rise building pressure measurement aerodynamics building design structural response building codes information technology (IT)

Corresponding Author(s): Dae Kun KWON

Online First Date: 01 December 2015 Issue Date: 19 January 2016

Cite this article:

Dae Kun KWON,Ahsan KAREEM,Deepak KUMAR, et al. A prototype online database-enabled design framework for wind analysis/design of low-rise buildings[J]. Front. Struct. Civ. Eng., 2016, 10(1): 121-130.

URL:

https://academic.hep.com.cn/fsce/EN/10.1007/s11709-015-0329-3
https://academic.hep.com.cn/fsce/EN/Y2016/V10/I1/121

Fig.1 A gable roof building

Fig.2 Schematic diagram of the DEDM-LR framework

Fig.3 User interface 1 and 2. (a) Building information tab; (b) data sources tab

Fig.4 User interface 3, 4 and 5. (a) Pressure analysis tab; (b) hurricane input and analysis tabs

Tab.1 Data sets/test models in TPU aerodynamic database

Case (roof angle)	ASCE 7-10			DEDM-LR		$DEDM-LR ASCE7 c)$
	directional procedure^a)	Envelope procedure		observed max	wind direction^b)
	directional procedure^a)	load case A	load case B	observed max	wind direction^b)
case 1 (4.8°)	190.5	135.2	70.1	250.0	75°	1.31
case 2 (14°)	179.6	147.1	72.4	244.5	45°	1.36
case 3 (30°)	246.3	211.5	75.1	396.8	60°	1.61
case 4 (45°)	352.1	286.5	89.8	654.5	75°	1.86

Tab.2 Peak bending moments at right knee (unit: kN?m)

Tab.3 Test models for the comparison of the DEDM-LR and NIST wind PRESSURE

Fig.5 Wind velocity (V.) and turbulence intensity (T. I.) profiles used in the TPU and NIST aerodynamic databases

Fig.6 Comparison of peak bending moments at right knee for Cases 5 to 10: top left to bottom − Case 5 to 7; top right to bottom − Case 8 to 10

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