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周平槐

（浙江省建筑設(shè)計(jì)研究院， 杭州 310006）

 

［摘要］日本是個(gè)地震頻發(fā)國(guó)家，其抗震設(shè)計(jì)概念發(fā)展迅速。每當(dāng)建筑規(guī)范修訂后要執(zhí)行更嚴(yán)格的標(biāo)準(zhǔn)時(shí)，按照舊規(guī)范設(shè)計(jì)的既有建筑，需要通過三級(jí)抗震鑒定方法，用以發(fā)現(xiàn)哪部分建筑物最有可能遭受破壞。在這種篩選方法中，低等級(jí)鑒定方法簡(jiǎn)單，但結(jié)果過于保守；而高等級(jí)鑒定方法則需通過更復(fù)雜的計(jì)算分析，才能得到較為可靠的結(jié)果。介紹了三級(jí)抗震鑒定方法的具體計(jì)算過程。并以一學(xué)校建筑為工程實(shí)例，進(jìn)行了第一級(jí)和第二級(jí)的抗震鑒定分析，最終算得結(jié)構(gòu)基本抗震性能指數(shù)E0，然后得到結(jié)構(gòu)抗震性能指標(biāo)Is，與結(jié)構(gòu)抗震安全指標(biāo)Is0作比較，從而確定結(jié)構(gòu)是否抗震安全。還簡(jiǎn)單介紹了日本常見抗震加固方法，供國(guó)內(nèi)抗震加固借鑒。

［關(guān)鍵詞］既有建筑;三級(jí)鑒定;基本抗震性能指數(shù);抗震性能指標(biāo);抗震安全指標(biāo);抗震加固

中圖分類號(hào)：TU 375-05文獻(xiàn)標(biāo)識(shí)碼：B文章編號(hào)：1002-848X(2012)08-0151-06

 

Zhou Pinghuai

(Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

 

Abstract: There are frequent earthquakes in Japan, and the seismic design concept develops rapidly. When codes are revised, those existing buildings designed in accordance with old codes must be found out which part will be damaged most likely by the three-level screening procedure. The lower level procedures are simple and conservative, while the higher level procedures can obtain the more reliable results through complex analysis. How to calculate is introduced by the example of a school building. In the first level screening procedure and the second level, seismic index of structure Is derives from basic seismic index of structure E0, then accordingly compares with seismic demand index of structure Is0, finally can draw a conclusion about the seismic safety of this building. In addition, common seismic strengthen methods in Japan are proposed in order to be referred in our country.

Keywords: existing building;threelevel screening procedure;basic seismic index of structure;seismic index of structure;seismic demand index of structure;seismic strengthen

作者簡(jiǎn)介：周平槐，工程師，Email:anji18@126.com。

 

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