Tecnologia BIM na análise de compatibilidade de projetos em edificações de estruturas wood frame para utilização no ensino / BIM technology in the compatibility analysis of projects in wood frame structure buildings for educational use

A full-scale, three-storey wood frame structure had been tested in-situ to investigate the changes of dynamic properties due to artificial damage. Beams and braces of the test structure were removed, to simulate damage, and then reassembled, to simulate rehabilitation. Free vibration tests were performed during every stage of the tests. The natural frequencies and damping ratios were obtained using modal parameter identification technique based on the Hilbert-Huang Transform. It is shown that, when the structure is damaged or rehabilitated, the natural frequency changes in accord with the structural stiffness in general while the damping ratio varies irregularly.

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Effects of Virtual Reality on Student Learning in Materials and Methods Course

10.29007/qm9s ◽

2020 ◽

Author(s):

Jason Lucas ◽

Dhaval Gajjar

Keyword(s):

Virtual Reality ◽

Student Learning ◽

Interactive Learning ◽

Traditional Classroom ◽

Frame Structure ◽

Methods Course ◽

Control Group ◽

Simulated Environment ◽

Wood Frame ◽

Small Wood

Virtual Reality (VR) offers a method of active and interactive learning. In this research, a VR-based simulated environment is used to help students gain an understanding in the sequencing of construction activities within an undergraduate materials and methods course. The VR simulation was developed to augment traditional classroom learning methods. The sequencing simulation allows students to freely navigate through the simulation and walk through the steps of the construction for a small wood frame structure. The simulation was developed for both immersive and non-immersive desktop-based simulations. During early studies, it was found that students were receptive of the technology and perceived a benefit in understanding spatial qualities as well as components of assembly but actual effects of learning were not identified. The current study explores the actual effects of student learning when incorporating simulation into the coursework. This paper discusses the comparison of students learning from a control group where the simulation was not used to the learning of a group who utilized the desktop-based simulation in addition to traditional classroom methods.

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Shaking-table tests of a full-scale single-story masonry veneer wood-frame structure

Earthquake Engineering & Structural Dynamics ◽

10.1002/eqe.1045 ◽

2010 ◽

Vol 40 (5) ◽

pp. 509-530 ◽

Cited By ~ 5

Author(s):

Hussein O. Okail ◽

P. Benson Shing ◽

William M. McGinley ◽

Richard E. Klingner ◽

Seongwoo Jo ◽

...

Keyword(s):

Full Scale ◽

Shaking Table ◽

Frame Structure ◽

Shaking Table Tests ◽

Wood Frame

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Experimental Study on Shear Behavior of Light Wall Composed of Oriented Structural Straw Board and Tennon-and-Mortise Connection Frame

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.2234 ◽

2010 ◽

Vol 163-167 ◽

pp. 2234-2239 ◽

Cited By ~ 1

Author(s):

Qi Fang Xie ◽

Hai Bei Xiong ◽

Xi Lin Lu

Keyword(s):

Shear Strength ◽

Shear Behavior ◽

Shear Capacity ◽

Frame Structure ◽

Low Carbon ◽

Panel Type ◽

Wood Frame ◽

Ancient Wood ◽

Major Factors ◽

Panel Thickness

Combined with the merits of light wood frame structure and Chinese ancient wood structure, a light wall composed of oriented structural straw board (OSSB) and tennon-and-mortise connection wood frame (TMCWF) was developed. The wall build-up with several wall-modular those are composed of wood frames and panels based on its width, the wood frame members are connected with tennon-and-mortise, and the panel is OSSB which is cheap and low-carbon, so the wall have many merits such as lower cost, better earthquake-resistance and good to environment protection. To research the shear behavior of the light wall composed of OSSB and TMCWF, nine wall-modular were tested under level unidirectional loading. The performances of the specimens such as the damage characteristic, shear capacity and rigidity are obtained. Factors that influence the shear capacity and elastic rigidity, including space of vertical frame members, nail space, panel thickness, type of panel and vertical load, were analyzed. And the shear behaviors of the light wall composed of OSSB and TMCWF and the light wood frame wall were compared. Experimental results show that the shear strength and rigidity of the developed wall with TMCWF are higher than those of the light wood frame wall. And the panel type, the panel thickness, nail space of the panel are the major factors to influence the shear strength of the wall-modular.

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A Study on the Nail-Plate Connection Performance of Light Wood-Frame Structure

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.217-218.1817 ◽

2011 ◽

Vol 217-218 ◽

pp. 1817-1820

Author(s):

Guo Lin Xu ◽

Ya Shuang Bai ◽

De Bin Zhu ◽

Wen Gang Chen

Keyword(s):

Carrying Capacity ◽

Structural Design ◽

Nail Plate ◽

Element Model ◽

Frame Structure ◽

Stress Distributions ◽

Environment Protection ◽

Wood Frame ◽

Plate Connection ◽

The Finite Element Model

Light wood-frame structure, as not only has good seismic performance, but also can give full play to its ligneous advantages such as light mass, high tenacity, energy saving and environment protection, is widely applied to low-rise buildings and villas. The rigidity and ductility of shear wall structured by wood-frame are closely related to its sheathing material and the nail layout. In order to give full play to the carrying capacity of the nailed connection nodes, the article adopts the finite element model to compare the stress distributions of sheathings with different nail spacing, and the carrying capacity of the connection at the point of the sheathing is destructed, and also to provide the reasonable value of nail layout and a reference for the actual structural design.

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Research on Semi-Rigid Connections Calculation of Laminated Wood Frame Beam-Column

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.438-439.743 ◽

2013 ◽

Vol 438-439 ◽

pp. 743-748

Author(s):

Zhi Hui Bian ◽

Tie Cheng Wang ◽

Shi Yong Zhao ◽

Su Juan Fu

Keyword(s):

Internal Force ◽

Frame Structure ◽

Design Calculation ◽

Original Design ◽

Small Deflection ◽

Rigid Connection ◽

Rigid Rod ◽

Wood Frame ◽

Steel Bolts ◽

Force Calculation

Generally laminated wood frame beam-column uses the additional steel bolts to connect, its performance is a semi-rigid characteristics under the loads. In the small deflection assumption conditions, this paper is based on the theory of semi-rigid connection, derived the semi-rigid rod end stiffness matrix and moment calculation formula of laminated wood structural frame beam-column element under the arbitrary loads. By SAP2000 the type of flexible coefficient is adopted to establish finite element numerical analysis based on 1# wood frame structure-building of science and technology R&D center in Hebei province. The result shows that each component is basically the same with the original design internal forces while the flexible coefficient is range of 0.41 to 0.82, the framework of semi-rigid connections in the actual calculation should be considered. The internal force calculation method is proposed, which provide a basis for wood design calculation that takes into account the semi-rigid connections.

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Exterior Wood-Frame Walls—Wind–Vapour Barrier Ratio in Denmark

Buildings ◽

10.3390/buildings11100428 ◽

2021 ◽

Vol 11 (10) ◽

pp. 428

Author(s):

Martin Morelli ◽

Torben Valdbjørn Rasmussen ◽

Marcus Therkelsen

Keyword(s):

Building Materials ◽

Frame Structure ◽

Diffusion Resistance ◽

Mould Growth ◽

Climate Data ◽

Safe Side ◽

Air Tightness ◽

Wood Frame ◽

And Diffusion ◽

Exterior Wood

Wood-frame walls in cold climates are traditional constructed with a vapour barrier that also constitutes the air-tightness layer. Polyethylene foil as a vapour barrier is likely used; however, other building materials can be used to obtain correspondingly sufficient properties. 1D hygrothermal simulations were conducted for a wood-frame structure to investigate the wind–vapour barrier ratio, and if the vapour barrier of polyethylene foil could be omitted and replaced by other materials. The results were postprocessed using the VTT mould model. The results showed how wood-frame walls can be designed with respect to internal humidity class and diffusion resistance divided into three categories: no risk for mould growth, needs further investigation, and is not performing well as the risk for mould growth is present. For internal humidity classes 1–3, the ratio between wind and vapour barrier must be about 1:5, and 1:10 for classes 4 and 5 to be on the safe side. Simulations were performed for the climate of Lund, Sweden, which were used to simulate climate in Denmark too. Nevertheless, the results are related to climate data and, thus, the location.

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