近年，建物個々の位置情報および各種建物属性情報を収録した都市計画基礎調査データの整備，更新が進んでおり，都市構造に関する分析の可能性が広がりつつある．本研究では，H17からH25までの札幌市の都市計画基礎調査データに生存時間分析を適用し，住宅寿命に影響を及ぼす建物属性の解明を試みた．まず，近年の住宅立地動向を調べたところ，市全体としては出現数の増加および除却数の減少が見られ，残存数は都心側では減少，外縁部では増加となり，居住地がスプロール傾向にあることが確認された．次に，建物属性情報を説明変数として比例ハザードモデルを適用したところ，非木造構造よりも木造構造の方が，また，実建蔽率が高いほど，地上階数が低いほど，住宅寿命が長くなることがわかった．
Recently, urban planning basic survey data is recorded both individual position information and a variety of building attribute information. For updating data, urban planning analysis will be increased in the future. In this study, we study affect building attribute in a residential life. The basic survey of city planning data in 2005-2013 is used to apply the survival analysis. The result of the analysis shows that the number of disappearances is decreased. In the other hand, the number of occurrences is increased. Moreover, the number of houses in city center is reduced, conversely, the number of houses in outskirts is increased. Therefore, the trend of residence will sprawl in future. After that, Proportional hazard model is applied to analyze variables of the building attribute information. The result found that the building life of wooden structure is longer than non-wood structure, percentage of the actual building coverage is higher, and the building storey is lower.
都市計画基礎調査データの建物属性情報を用いた住宅寿命の要因分析
jsce72-5 I269-I275
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