- 摘 要
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(北京市建筑設(shè)計研究院有限公司， 北京 100045)
［摘要］結(jié)合某19世紀(jì)80年代末多層砌體結(jié)構(gòu)抗震加固及改造實際工程，分析論證了采用不同后續(xù)使用年限約定對結(jié)構(gòu)加固成本的影響。對原有砌體墻加固方案進行了加固效果比較。著重介紹了鋼筋混凝土面層加固方法的設(shè)計過程及施工中遇到的難點；為滿足建筑使用功能轉(zhuǎn)變要求，利用鋼筋混凝土雙梁托換墻體拆除加固技術(shù)，對原有砌體墻開大洞，使原有多個小開間房間聯(lián)通并形成一個整體空間，分析了由于砌體墻體開洞后抗側(cè)剛度的變化，造成對周圍墻體內(nèi)力的影響；提供了鋼筋混凝土托換梁的內(nèi)力計算方法及設(shè)計構(gòu)造；總結(jié)了砌體結(jié)構(gòu)托換墻體施工時注意事項及經(jīng)驗，為今后同類工程設(shè)計與施工提供參考。
［關(guān)鍵詞］砌體結(jié)構(gòu)； 抗震加固改造； 鋼筋混凝土面層加固； 雙梁托換
中圖分類號：TU312-1文獻標(biāo)識碼：A文章編號：1002-848X(2019)18-0136-05
Seismic reinforcement and retrofit design of masonry structures of old buildings
Li Yang, Zhang Qiao, Zhang Guoqing
(Beijing Institute of Architectural Design， Beijing 100045， China)
Abstract:Based on the practical project of seismic strengthening and reconstruction of a multi-story masonry structure in the 1980s, the influence of different of agreements successive design working life on the cost of structural strengthening was analyzed and demonstrated. The effects of different reinforcement methods were compared. The design process and difficulties encountered in construction of structure member strengthening with reinforced concrete layer method were introduced emphatically. In order to meet the requirement of functional transformation of buildings, the demolition and reinforcement technology of reinforced concrete double beam under pinning wall was used to open large holes in the original masonry wall, which makes several small rooms connected and forms a whole space. The change of lateral stiffness of masonry wall after opening holes was analyzed. It also provides the internal force calculation method and design structure of reinforced concrete underpinning beam, summarizes the matters needing attention and experience in masonry underpinning wall construction, and provides reference for similar engineering design and construction in the future.
Keywords:masonry; seismic strengthening and retrofit; structure member strengthening with reinforced concrete layer; underpinning with double beam method
作者簡介：李陽，碩士，工程師，一級注冊結(jié)構(gòu)工程師，Email: liyang1@biad.com.cn。
