Development of cross embedded joint using lagscrewbolt

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Inserted type fasteners, such as a lagscrewbolt and a steel rod glued into timber, are proposed as one of the fasteners for middle and large scale timber buildings and timber portal frames. The moment resisting joint with lagscrewbolts etc. shows good mechanical performance and aesthetic. However, the beam and column joints rarely showed a brittle shear failure in the panel zone of the column in previous studies. Therefore, in order to prevent the failure and improve the joint properties, a cross embedded joint with lagscrewbolts was developed. And the joint reinforced with long screws was also developed with considering simple timber processing.The cross embedded joint with lagscrewbolts showed a good ductile performance and a good reinforcing effect against the shear failure in a column and the brittle pull-out failure. And the joint with long screws also shows a good reinforcing performance.