Yuya Takaiwa

EFFECT OF AGING ON NATURAL FREQUENCY OF KURAZUKURI BUILDINGS

Yuya Takaiwa

This study carried out microtremor measurements at the Kawagoe City Former Harada Residence Misegura and the Kawagoe City Kurazukuri Museum Misegura, both Kurazukuri buildings located within the Kawagoe Traditional Buildings Preservation District in Kawagoe City, to understand the impact of aging over …

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FUNDAMENTAL STUDY TO IMPROVE THE COMPRESSIVE MATERIAL PROPERTIES OF WALL SOILS THAT MIMIC SWALLOW NESTS

Hiroki Yoshinuma, Tetsuro Ishida, Yuya Takaiwa

This study aimed to improve the compressive material properties of wall clays by analyzing the material composition of swallow nests. Uniaxial compression tests were conducted to evaluate the effects of fiber orientation, fiber length, fiber diameter, fiber content, and mucin as a …

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Rib Osteomyelitis in an 11-year-old Girl without Fever

Tomohiro Otaka, Yuji Fujita, Junpei Ishii, Yuya Takaiwa et autres

Rib osteomyelitis in children is rare. Here, we report a case of rib osteomyelitis in an 11-year-old girl who presented with chest pain as the only complaint. Based on physical examination and blood tests, pleurisy was suspected as the initial diagnosis, but …

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哲学堂公園内古建築シンポジウム報告

Yuya Takaiwa, Shiori OGAWA

EVALUATION OF MATERIAL PROPERTIES OF CHAMAECYPARIS OBUSA VAR(TAIWAN HINOKI) USED IN TRADITIONAL ARCHITECTURE TAISHO-PERIODO

Rina Kurahashi, Hina Takizawa, Yuya Takaiwa

EVALUATION OF EQUIVALENT SHEAR STIFFNESS AT EACH RENOVATION STAGE IN THE TRADITIONAL WOODEN BUILDING

Hina Takizawa, Yuya Takaiwa

EFFECT OF AXIAL FORCE ON NATURAL FREQUENCIES OF COLUMNS ATTACHED TO TIMBER BUILDINGS

Hiroki Yoshinuma, Riku Muramatsu, Yuya Takaiwa

INFLUENCE OF MATERIAL PROPERTIES OF COMPONENTS ON ROOF CURVE IN TEMPLE ARCHITECTURE

Natsuki Horie, Hina Takizawa, Yuya Takaiwa

FRICTIONAL CHARACTERISTICS OF THE SURFACE OF HINOKI OLD WOOD TAKEN FROM JAPANESE TRADITIONAL WOODEN BUILDINGS IN THE LATE EDO PERIOD

Ji-Pyo Hong, Hina Takizawa, Yuya Takaiwa

DESIGN AND FABRICATION OF A WOODEN PAVILION USING UNDERUTILIZED LUMBER, AND PROPOSAL FOR CONVERSION

Ayano Kodera, Natsuki Horie, Kazumi Kudo, Yuya Takaiwa

Sustainability of Japanese Traditional Architecture Viewed Through Visualization of Seismic Behavior

Yuya Takaiwa

我が国の古建築に多く見られる斗栱は，柱頭と丸桁の間に設置されるブラケットの役割を果たす部材であり，その地震時挙動は明らかになっていない．そこで，古建築の地震時挙動を明らかにすることを目的として斗栱の動的加力試験をおこなった．動的加力試験において，変位計で挙動を把握することは，変位計同士の接触など配置的な問題から困難である．そこで，本実験ではモーションキャプチャを用いて斗栱の挙動を可視化した．併せて，同仕様・同寸法のヒノキで新築した斗栱を用いた動的加力実験の結果と比較をおこなうことで，古建築の持つサステナビリティについて考察をおこなった．実験の結果，斗栱は，約150年の年月を経ても新築した斗栱と同等の特性を有することが確認された．斗栱は，主たる成分が摩擦抵抗となるディテールとすることで，木材の経年変化の影響を受けにくくしていることが推察された．

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STRUCTURAL CHARACTERISTICS EVALUATION OF DOU-GONG COLLECTED FROM TRADITIONAL TIMBER ARCHITECTURE CONSTRUCTED IN THE LATE EDO PERIOD

Yuya Takaiwa

This study is an experimental study using Dou-gong extracted from the demolition site of a traditional timber architecture constructed in 1856. In order to clarify the hysteresis curve and deformation behavior of Dou-gong, two-dimensional and one-dimensional horizontal loading experiments were carried out …

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