The Experts below are selected from a list of 237 Experts worldwide ranked by ideXlab platform
Hayato Nishikawa - One of the best experts on this subject based on the ideXlab platform.
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Seismic Performance of One-storey Thatched Roof Wooden Structure Against a Strong Earthquake Ground Motion
2017Co-Authors: Tomiya Takatani, Hayato NishikawaAbstract:In order to investigate the seismic behaviour of an old one-storey thatched roof Wooden Structure, 3-D non-linear collapsing process analysis of this Wooden Structure was conducted against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of “6 upper” level. A non-linear behaviour of timber elements in the Wooden Structure during a strong earthquake ground motion can be simulated by this 3-D non-linear collapsing process analysis based on the Distinct Element Method. The effect of the post fixing condition under Wooden Structure floor on seismic response of this Wooden Structure was numerically investigated in this paper.
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Seismic Collapsing Process Analysis of One-story Thatched Roof Wooden Structure under Strong Earthquake Ground Motion
2016Co-Authors: Tomiya Takatani, Hayato NishikawaAbstract:In Japan, there has existed a serious problem on seismic retrofit for a lot of one-story Wooden Structures such as temples and shrines in famous tourist resort areas, which were built by a Japanese traditional framed-construction method and have some types of thatched roof instead of tiles. In order to investigate the seismic behaviour of an old one-story thatched roof Wooden Structure, “Yakushi-doh”, 3-D non-linear collapsing process analysis of Yakushi-doh Structure was conducted against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of “6 upper” level. A non-linear behaviour of timber elements in the Wooden Structure during a strong earthquake ground motion can be simulated by this 3-D non-linear collapsing process analysis based on the Distinct Element Method. The effect of the post fixing condition under Wooden Structure floor on seismic response of Yakushi-doh Structure was numerically investigated in this paper.
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Seismic collapsing behaviour of one-story Wooden Structure with thatched roof under strong earthquake ground motion
Proceedings of the Second International Conference on Performance-based and Life-cycle Structural Engineering (PLSE 2015), 2015Co-Authors: Tomiya Takatani, Hayato NishikawaAbstract:In Japan, there has existed a serious problem on seismic retrofit for a lot of one-story Wooden Structures such as temples and shrines in famous tourist resort areas, which were built by a Japanese traditional framedconstruction method and have some types of thatched roof instead of tiles. In order to investigate the seismic behaviour of an old one-story thatched roof Wooden Structure, “Yakushi-doh”, 3-D non-linear collapsing process analysis of Yakushi-doh Structure was conducted against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of “6 upper” level. A non-linear behaviour of timber elements in the Wooden Structure during a strong earthquake ground motion can be simulated by this 3-D non-linear collapsing process analysis based on the Distinct Element Method. The effect of the post fixing condition under Wooden Structure floor on seismic response of Yakushi-doh Structure was numerically investigated in this paper.
Tomiya Takatani - One of the best experts on this subject based on the ideXlab platform.
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Seismic Performance of One-storey Thatched Roof Wooden Structure Against a Strong Earthquake Ground Motion
2017Co-Authors: Tomiya Takatani, Hayato NishikawaAbstract:In order to investigate the seismic behaviour of an old one-storey thatched roof Wooden Structure, 3-D non-linear collapsing process analysis of this Wooden Structure was conducted against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of “6 upper” level. A non-linear behaviour of timber elements in the Wooden Structure during a strong earthquake ground motion can be simulated by this 3-D non-linear collapsing process analysis based on the Distinct Element Method. The effect of the post fixing condition under Wooden Structure floor on seismic response of this Wooden Structure was numerically investigated in this paper.
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Seismic Collapsing Process Analysis of One-story Thatched Roof Wooden Structure under Strong Earthquake Ground Motion
2016Co-Authors: Tomiya Takatani, Hayato NishikawaAbstract:In Japan, there has existed a serious problem on seismic retrofit for a lot of one-story Wooden Structures such as temples and shrines in famous tourist resort areas, which were built by a Japanese traditional framed-construction method and have some types of thatched roof instead of tiles. In order to investigate the seismic behaviour of an old one-story thatched roof Wooden Structure, “Yakushi-doh”, 3-D non-linear collapsing process analysis of Yakushi-doh Structure was conducted against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of “6 upper” level. A non-linear behaviour of timber elements in the Wooden Structure during a strong earthquake ground motion can be simulated by this 3-D non-linear collapsing process analysis based on the Distinct Element Method. The effect of the post fixing condition under Wooden Structure floor on seismic response of Yakushi-doh Structure was numerically investigated in this paper.
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Seismic collapsing behaviour of one-story Wooden Structure with thatched roof under strong earthquake ground motion
Proceedings of the Second International Conference on Performance-based and Life-cycle Structural Engineering (PLSE 2015), 2015Co-Authors: Tomiya Takatani, Hayato NishikawaAbstract:In Japan, there has existed a serious problem on seismic retrofit for a lot of one-story Wooden Structures such as temples and shrines in famous tourist resort areas, which were built by a Japanese traditional framedconstruction method and have some types of thatched roof instead of tiles. In order to investigate the seismic behaviour of an old one-story thatched roof Wooden Structure, “Yakushi-doh”, 3-D non-linear collapsing process analysis of Yakushi-doh Structure was conducted against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of “6 upper” level. A non-linear behaviour of timber elements in the Wooden Structure during a strong earthquake ground motion can be simulated by this 3-D non-linear collapsing process analysis based on the Distinct Element Method. The effect of the post fixing condition under Wooden Structure floor on seismic response of Yakushi-doh Structure was numerically investigated in this paper.
Rėda Bistrickaitė - One of the best experts on this subject based on the ideXlab platform.
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Thermal Properties of Alkali Activated Slag Plaster for Wooden Structures.
Scientific reports, 2020Co-Authors: Andrius Kielė, Danutė Vaičiukynienė, Gintautas Tamošaitis, Rėda BistrickaitėAbstract:Currently, the production of green building materials grows up. Alkali-activated materials (AAMs) based plaster have better fire resistance properties compared to Portland cement-based concrete and plasters. Compared to Portland cement-based systems AAMs retain a significant level of structural stability after exposure to fire events. AAM based concrete doesn't have at all or has an insignificant amount of calcium hydroxide in the binder Structure which exposed to high-temperature changes to calcium oxide. This weakens Portland cement structural properties and allows cracks to appear under high-temperature conditions. This study shows that AAM based plaster that consisted of alkali-activated ground granulated blast furnace slag (slag) with the addition of Phosphogypsum (PG), sand and polypropylene fibre filling exposed to 1000 °C temperature shows up to 2% longitudinal dimension shrinkage. After exposure of elevated temperature these fibers melted leaving a network of channels that allow water vapour vaporize and inner pressure in the material decreased. The start of the wood surface charring process tch is 10 minutes after the start of heating. Using an AAM binder as fire-resistant plaster coating on a Wooden Structure delays the start of the char layer forming on the wood surface. This allows using AAMs base plaster for fire-resistant coatings on combustible materials as the barrier layer in order to increase the passive safety of Wooden Structures in heritage buildings.
Andrius Kielė - One of the best experts on this subject based on the ideXlab platform.
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Thermal Properties of Alkali Activated Slag Plaster for Wooden Structures.
Scientific reports, 2020Co-Authors: Andrius Kielė, Danutė Vaičiukynienė, Gintautas Tamošaitis, Rėda BistrickaitėAbstract:Currently, the production of green building materials grows up. Alkali-activated materials (AAMs) based plaster have better fire resistance properties compared to Portland cement-based concrete and plasters. Compared to Portland cement-based systems AAMs retain a significant level of structural stability after exposure to fire events. AAM based concrete doesn't have at all or has an insignificant amount of calcium hydroxide in the binder Structure which exposed to high-temperature changes to calcium oxide. This weakens Portland cement structural properties and allows cracks to appear under high-temperature conditions. This study shows that AAM based plaster that consisted of alkali-activated ground granulated blast furnace slag (slag) with the addition of Phosphogypsum (PG), sand and polypropylene fibre filling exposed to 1000 °C temperature shows up to 2% longitudinal dimension shrinkage. After exposure of elevated temperature these fibers melted leaving a network of channels that allow water vapour vaporize and inner pressure in the material decreased. The start of the wood surface charring process tch is 10 minutes after the start of heating. Using an AAM binder as fire-resistant plaster coating on a Wooden Structure delays the start of the char layer forming on the wood surface. This allows using AAMs base plaster for fire-resistant coatings on combustible materials as the barrier layer in order to increase the passive safety of Wooden Structures in heritage buildings.
Qing Fang Niu - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Properties of Structural Chuan-Dou Style Wooden Structure
Advanced Materials Research, 2014Co-Authors: Jun Wei Wang, Guan Feng Qiao, Qing Fang NiuAbstract:In this paper, use the finite element analysis software ABAQUS to firstly analyze the mechanical response to simplified model of Chuan-dou type Wooden Structure under its own weight, followed by the analysis of the Structure under horizontal reciprocating loading, and finally seismic performance analysis of the Structure under earthquake. Use the same contact properties between the members, and the differences between dynamic friction coefficient and static friction coefficient are not distinguished. The results show that the Wooden Structure of ancient houses has good seismic performance, which is mainly achieved by the frame deformation and friction slip.
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Typical Brackets Dimensional Numerical Simulation of the Wooden Structure
Advanced Materials Research, 2014Co-Authors: Qing Fang Niu, Guan Feng QiaoAbstract:Brackets is the ancient Chinese Wooden building unique ways and one of the main features of the Structure. Its dual function of both structural and architectural: An important component of both the Structure itself, because of its flexible features tenon, the dynamic response of the Structure can absorb greater energy, play a good role in the earthquake; But it is also a special architectural ornament, can play the effect of beautifying buildings. Therefore, this paper based on the finite element software ABAQUS brackets by the force of the mechanism of failure modes and numerical simulation analysis for the brackets and the whole Structure of the wood to provide a scientific assessment and reinforcement.
