蘭州某中學(xué)教學(xué)樓隔震加固設(shè)計
魏新強(qiáng)，安貴倉，唐曉琳
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（甘肅土木工程科學(xué)研究院， 蘭州 730020）
［摘要］蘭州某中學(xué)教學(xué)樓為四層磚混結(jié)構(gòu)，建于1985年，經(jīng)鑒定需要對其進(jìn)行抗震加固。常規(guī)加固方法對學(xué)校的正常教學(xué)影響較大，為盡量減少施工過程中對教學(xué)樓的影響，降低綜合造價，采用隔震加固方法。依據(jù)現(xiàn)行設(shè)計規(guī)范對其進(jìn)行隔震加固設(shè)計，分析結(jié)果表明，該教學(xué)樓采用基礎(chǔ)隔震進(jìn)行抗震加固后，可通過降低隔震層上部結(jié)構(gòu)的設(shè)防烈度來降低其抗震構(gòu)造要求，從而滿足抗震鑒定標(biāo)準(zhǔn)，達(dá)到抗震加固的目的；采用基礎(chǔ)隔震加固方法對原教學(xué)樓使用功能、內(nèi)部裝修、管線等影響較小，可減少內(nèi)部裝修和管線恢復(fù)的費用,施工周期較短，學(xué)?？梢岳眉倨谕瓿山虒W(xué)樓的加固施工。［關(guān)鍵詞］磚混結(jié)構(gòu); 抗震加固; 隔震技術(shù)中圖分類號：TU352.12 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2016)11-0054-06
Seismic isolation strengthening design of a middle school teaching building in LanzhouWei Xinqing, An Guicang, Tang Xiaolin(Gansu Research Institute of Civil Engineering, Lanzhou 730020, China)Abstract: It is found in seismic appraisal that a four-floor brick-concrete structure teaching building of a middle school in Lanzhou, built in 1985, needs seismic strengthening. The conventional method of strengthening has great influence on the normal teaching activities of the school. To reduce the influence on the building during the construction and the overall cost, the seismic isolation technique was adopted. According to current design criterions, the seismic isolation strengthening design was made. Analysis results indicate that after adoption of the base isolation seismic strengthening in the teaching building, the seismic structural requirements can be reduced through lowering seismic fortification intensity of the upper structure above isolation layer, to meet the standards for seismic appraisal and achieve the purpose of seismic strengthening. The use of base isolation strengthening method of the teaching building has less influence in use function, interior decoration and pipelines. It can also reduce restore costs for interior decoration and pipeline and shorten construction period, so the school can take advantage of the holiday to finish strengthening construction of the teaching building.Keywords: brick concrete structure; seismic strengthening; seismic isolation technique
作者簡介：魏新強(qiáng)，院結(jié)構(gòu)副總，高級工程師，一級注冊結(jié)構(gòu)工程師， Email: wxq0922@163.com。
