Wooden building skeleton

摘要

The wooden building skeleton of the present invention has excellent quake resistance because the column of a rigid-frame structure joined to a cross member or the foundation so that a bending moment can be transferred therebetween and the load-bearing wall therein exhibit their load bearing ability. A foundation and a wooden column and the wooden column and a beam are respectively joined by two bolts so that a bending moment can be transferred therebetween. A load-bearing wall is also provided between the beam and the foundation. The length of the section of the bolts which undergoes elongation when inter-story deflection occurs between the beam and the foundation or the cross-sectional dimensions of the wooden column is set such that the inter-story deflection which is generated before the wooden column is fractured is almost equal to or greater than the inter-story deflection which is generated before the load-bearing wall is fractured.

主权项

1. A wooden building skeleton, comprising:
a wooden column erected on a foundation or a beam of a lower story, the wooden column having a flat rectangular cross-section; a wooden beam joined to the wooden column with a lower surface thereof facing an upper surface of the wooden column, the wooden beam having an axis extending in a direction of a longitudinal axis of a cross-section of the wooden column; and a load-bearing wall having two shaft columns erected at a predetermined distance on the foundation or the beam of the lower story for supporting the wooden beam by an axial force, and a board member or a plurality of board members secured to the shaft columns, each of the plurality of board members having a predetermined width and being secured to the shaft columns at a first end and a second end of each of the plurality of board members and arranged obliquely between the shaft columns; wherein the wooden column has a lower end joined to the foundation or the beam of the lower story via two first bolts, wherein the two first bolts are positioned vertically in a vicinity of a first end and a second end of a cross-section of the lower end of the wooden column, wherein the first end and the second end of the cross-section of the lower end of the wooden column are positioned in a direction of a longitudinal axis of the cross section of the lower end of the wooden column in such a way that a bending moment is transferred from the wooden column to the foundation or the beam of the lower story; wherein the wooden column and the wooden beam are joined to each other via two second bolts positioned vertically in a vicinity of both a first end and a second end of a cross-section of an upper end of the wooden column, wherein the first end and the second end of the cross-section of the upper end of the wooden column are positioned in a direction of a longitudinal axis of the cross-section of the upper end of the wooden column in such a way that a bending moment is transferred between the wooden beam and the wooden column; and wherein a length of a portion of each of the first bolts, a length of a portion of each of the second bolts, and a length of the wooden column in the direction of the longitudinal axis of the cross-section of the wooden column are set such that a first relative displacement between the wooden beam and the foundation or the beam of the lower story, which is generated before the wooden column is fractured, is equal to or greater than a second relative displacement between the wooden beam and the foundation or the beam of the lower story, which is generated before the load-bearing wall is fractured, wherein the portion of each of the first bolts and the portion of each of the second bolts undergo elongation when the first and second relative displacements are generated between the wooden beam and the foundation or the beam of the lower story, wherein the portion of each of the first bolts and the portion of each of the second bolts are located where the elongation is respectively generated when the first and second relative displacements are generated.