- 摘 要
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[摘要]介紹了新版《混凝土結(jié)構(gòu)設(shè)計規(guī)范》中預(yù)應(yīng)力混凝土結(jié)構(gòu)構(gòu)件設(shè)計計算、構(gòu)造方面修訂和新增的內(nèi)容。要點為預(yù)應(yīng)力作用參與相關(guān)荷載組合,預(yù)應(yīng)力新材料,裂縫控制及裂縫寬度驗算,考慮內(nèi)力重分布進行調(diào)幅的計算,施工階段驗算要求,改進預(yù)應(yīng)力混凝土收縮、徐變損失值計算,預(yù)應(yīng)力混凝土局部承壓間接加強鋼筋的配置和防止預(yù)制預(yù)應(yīng)力混凝土構(gòu)件端部裂縫的配筋要求,預(yù)應(yīng)力混凝土結(jié)構(gòu)在地震區(qū)的應(yīng)用及抗震設(shè)計,以及新增加無粘結(jié)預(yù)應(yīng)力混凝土設(shè)計規(guī)定等。
[關(guān)鍵詞]預(yù)應(yīng)力混凝土結(jié)構(gòu)構(gòu)件;設(shè)計計算;預(yù)應(yīng)力損失;構(gòu)造;抗震設(shè)計
中圖分類號:TU318.4文獻標(biāo)識碼:A文章編號:1002-848X(2011)10-0146-06
Introduction of revision of Code for design of concrete structures part Ⅷ:Design requirements for structural members of prestressed concrete
Tao Xuekang, Li Dongbin, Wang Xiaofeng, Xu Youlin(China Academy of Building Research, Beijing 100013, China)
Abstract:Some newly revision in the design calculation requirements and detailing for structural members of prestressed concrete in the Code for design of concrete structures are introduced. The main points include the load combination of prestressing action, new materials, crack control and checking method, analysis on redistribution of internal forces, checking for construction situation, improved calculation for shrinkage and creep loss of prestress, bearing design of local anchorage zones and prevention of some cracks of general zones due to bursting and spalling forces, application range of prestressed concrete in seismic areas and seismic design, as well as the new design requirements for unbonded prestressed concrete members, and so on.
Keywords:structural member of prestressed concrete; design calculation; loss of prestress; detailing; seismic design
作者簡介:陶學(xué)康,研究員,博士生導(dǎo)師;李東彬,研究員,建研科技股份有限公司副總工程師;王曉鋒,副研究員;徐有鄰,博士,研究員,結(jié)構(gòu)所顧問。
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