既存木造住宅の調査に基づいた耐震性の推定

基于现有木屋调查的抗震估算

• 批准号: 01550450
• 负责人: 杉山 英男
• 金额: $ 1.22万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550450/
• 关键词: 在来構法; 本造住宅; 耐震性; 壁率; 偏心率; 直下率; 吹抜け; 床剛性

首都圏に立てられた2階建ての在来構法木造住宅の図面を2つの異なる企業ソ-スから100戸づつ抽出し、各階の各方面の壁率、偏心率、外周壁率並びに2階壁の直下に1階壁の存在する率(壁の直下率)、2階主要柱の直下に1階柱の存在する率(柱の直下率)を計算した。なお壁の倍率は建築基準法施行令の規定値をとる場合と、実状に近い倍率評価をする場合とに分けて計算したが、以下では後者の場合を中心に述べる。2つのソ-スにつき総合考察すると次のことが言える。1)壁率は法令の規定値を十分満足しており安全で、規定値に対し2階は約3倍、1階は2.5倍(東西方向)〜3倍(南北方向)。1階の東西方向が南北方向より値が小さいのは南面に大きな開口をとる傾向があるため。しかし外周壁率を見ると1、2階共に南北方向の方が大。これは北面に開口が少ないため。2)1、2階共に南北方向の方が偏心率が小さいが、これは上述の傾向から当然予想される所である。一方2階の方が偏心率が小さいが、これは2階に小部屋が多いため。なお1、2階共に偏心率0.15以下の安全な建物は全体の約20%。これは耐震的に好ましくない傾向。3)壁の直下率は外周壁では32〜40%、内部壁では20〜26%で、外周の方が1、2階の壁の重なりが大。4)2階の主要柱(平均20数本)の直下率は約50%で、半分は直下に柱がなく、寒心に堪えない。次に上述の結果を参考にして2階建て建物につき壁の偏在と2階床の吹抜けを考慮した構造モデルを数種設定し、静的に作用した水平力の耐力壁線への流れを床の剛性が完全剛でないという条件の下に調べた。この際実用的簡便計算法を将来創出する目的で新たに一つの手計算法を考案し、その計算簡略度と解の精度の関係を連立方程式を用いて解いた精解を媒介にして調べた。その結果簡便計算法につきある程度の見通しを得た。

The capital district has a 2-story building, a wooden house with a wooden structure, a 2-story building, a 2-story building, and a 100-story building. Each level has its own wall rate and eccentricity. , the outer peripheral wall ratio is calculated by calculating the straight-down ratio of the 2nd-order wall and the existence of the 1st-order wall (the straight-down ratio of the wall) and the 2nd-order main column's straight-down ratio of the 1st-order column. The magnification ratio of the wall is specified in the Enforcement Ordinance of the Building Standards Act, and the magnification ratio of the situation is the same as that of the building standard law.価をする cases and calculations are divided into けて calculations, and the following is the center of the latter cases. 2つのソ-スにつき総合investigationすると时のことが言える. 1) The wall ratio is stipulated in the law and is very safe and safe. The stipulated value is about 3 times for the second level and 2.5 times (for the east-west direction) to 3 times (for the north-south direction) for the first level. The first level is the east-west direction and the north-south direction. The ratio of the outer wall of the wall is large in the north-south direction.これは北面に开户が小ないため. 2) The eccentricity of the north-south direction of the 1st and 2nd order is the same, and the above-mentioned tendency is of course the same as the eccentricity. The eccentricity of the square 2nd level is small and the eccentricity is small, and the 2nd level is small and small. About 20% of all safe buildings in the 1st and 2nd stages have an eccentricity of less than 0.15. It has a good tendency to resist earthquakes. 3) The wall straightness ratio is 32~40% for the outer wall, 20~26% for the inner wall, 1 square for the outer wall, and heavy for the 2nd step wall. 4) The main column of level 2 (an average of 20 copies) has a straight-down rate of about 50%, a half-point straight-down pillar, and a cold heart. The results mentioned above are based on the reference of the 2-level building, the wall of the building, the partial construction of the 2-level bed, and the structure of the 2-level building. Set the し, static に effect し た horizontal force の endurance wall line へ の flow れ を bed の rigid が completely rigid で な い と い う conditions の 下 に べ た. A simple calculation method that can be used to create new goals in the future The relationship between the simplicity of calculation and the accuracy of the solution is the use of continuous equations and the precise solution of the solution using the medium of the medium.そのThe result is a simple calculation method.