A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PRESTRESSED WOODEN BEAM
To enable large tension to be applied to a tendon disposed in a convex shape in a prestressed wooden beam.SOLUTION: A wooden material in which directions of fibers are aligned is weak to a force in a direction perpendicular to fibers. A prestressed wooden beam 1 comprises: a wooden beam body 2; and a tendon 3 applying prestress to the beam body 2. A groove 4 accepting the tendon 3 is provided in a lower surface of the beam body 2 along an extending direction of the beam body 2. A lower surface of the groove 4 is curved to protrude downwardly when seen from a width direction of the beam body 2, and a reinforcement plate 5 is attached to the lower surface. Although lifting force of the tendon 3 acts on the lower surface of the groove 4 in a direction perpendicular to fibers, the lower surface of the groove 4 is not dented even if a large tension is applied to the tendon 3, since the lower surface of the groove 4 is protected by the reinforcement plate 5.SELECTED DRAWING: Figure 1
【課題】プレストレスト木造梁において、凸状に配置される緊張材に大きな張力を与えることを可能にする。【解決手段】繊維の方向がそろえられた木質材料は、繊維に直交する方向の力に弱い。プレストレスト木造梁１は、木造の梁本体２と、梁本体２にプレストレスを与える緊張材３とを有する。梁本体２の下面には、梁本体２の延在方向に沿って、緊張材３を受容する溝４が設けられている。溝４の底面は、梁本体２の幅方向から見て下に凸になるように湾曲するとともに補強板５が取り付けられている。緊張材３の吊り上げ力は溝４の底面に対して繊維に直交する方向に作用するが、補強板５によって溝４の底面が保護されるため、緊張材３に大きな張力を与えても溝４の底面がへこまない。【選択図】図１
PRESTRESSED WOODEN BEAM
To enable large tension to be applied to a tendon disposed in a convex shape in a prestressed wooden beam.SOLUTION: A wooden material in which directions of fibers are aligned is weak to a force in a direction perpendicular to fibers. A prestressed wooden beam 1 comprises: a wooden beam body 2; and a tendon 3 applying prestress to the beam body 2. A groove 4 accepting the tendon 3 is provided in a lower surface of the beam body 2 along an extending direction of the beam body 2. A lower surface of the groove 4 is curved to protrude downwardly when seen from a width direction of the beam body 2, and a reinforcement plate 5 is attached to the lower surface. Although lifting force of the tendon 3 acts on the lower surface of the groove 4 in a direction perpendicular to fibers, the lower surface of the groove 4 is not dented even if a large tension is applied to the tendon 3, since the lower surface of the groove 4 is protected by the reinforcement plate 5.SELECTED DRAWING: Figure 1
【課題】プレストレスト木造梁において、凸状に配置される緊張材に大きな張力を与えることを可能にする。【解決手段】繊維の方向がそろえられた木質材料は、繊維に直交する方向の力に弱い。プレストレスト木造梁１は、木造の梁本体２と、梁本体２にプレストレスを与える緊張材３とを有する。梁本体２の下面には、梁本体２の延在方向に沿って、緊張材３を受容する溝４が設けられている。溝４の底面は、梁本体２の幅方向から見て下に凸になるように湾曲するとともに補強板５が取り付けられている。緊張材３の吊り上げ力は溝４の底面に対して繊維に直交する方向に作用するが、補強板５によって溝４の底面が保護されるため、緊張材３に大きな張力を与えても溝４の底面がへこまない。【選択図】図１
PRESTRESSED WOODEN BEAM
プレストレスト木造梁
SHIROYAMA TAKASHI (author) / TOKUTAKE SHIGETAKA (author) / SATO MARE (author)
2019-12-26
Patent
Electronic Resource
Japanese
Experimental Study of Deformation Characteristic and Application on External Prestressed Wooden Beam
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Experimental Study of Deformation Characteristic and Application on External Prestressed Wooden Beam
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