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（1 同濟(jì)大學(xué)預(yù)應(yīng)力研究所， 上海 200092；  2 同濟(jì)大學(xué)先進(jìn)土木工程材料教育部重點(diǎn)實(shí)驗(yàn)室， 上海 200092；  3 中國(guó)海誠(chéng)工程科技股份有限公司， 上海 200031； 4 華東建筑設(shè)計(jì)研究院有限公司， 上海 200002）

［摘要］對(duì)國(guó)家會(huì)展中心（上海）的大空間展廳的預(yù)應(yīng)力混凝土框架結(jié)構(gòu)進(jìn)行了模型計(jì)算，分析得出了空間效應(yīng)影響下的該預(yù)應(yīng)力結(jié)構(gòu)中次彎矩、次剪力、次軸力以及次扭矩的分布規(guī)律和數(shù)值。將空間結(jié)構(gòu)分析中的預(yù)應(yīng)力次內(nèi)力與平面框架分析中的次內(nèi)力相應(yīng)情況進(jìn)行了對(duì)比討論，發(fā)現(xiàn)兩種情況下的次內(nèi)力存在顯著的差異，明確了空間效應(yīng)對(duì)該類型預(yù)應(yīng)力混凝土結(jié)構(gòu)的次內(nèi)力具有顯著影響。通過(guò)分析可知，該類空間效應(yīng)顯著的預(yù)應(yīng)力混凝土框架結(jié)構(gòu)的次內(nèi)力特別是次彎矩、次軸力的數(shù)值可觀，在結(jié)構(gòu)設(shè)計(jì)中應(yīng)具體考慮。

［關(guān)鍵詞］預(yù)應(yīng)力混凝土框架結(jié)構(gòu)； 空間效應(yīng)； 次內(nèi)力； 次彎矩； 次軸力

中圖分類號(hào)：TU378-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)08-0009-07

Analysis of secondary internal force of prestressed concrete frame structure with spatial effect

Xiong Xueyu1, 2， Xiang Ruibin1,3， Zhou Jianlong4

(1 Institute of Prestressed Structures, Tongji University, Shanghai 200092, China; 2 Key Laboratory of Advanced Civil Engineering Materials(Tongji University), Ministry of Education, Shanghai 200092, China； 3 China Haisum Engineering Co.,  Ltd.,  Shanghai 200031, China； 4  Ｅａｓｔ Ｃｈｉｎａ Ａｒｃｈｉｔｅｃｔｕｒａｌ Ｄｅｓｉｇｎ ＆ Ｒｅｓｅａｒｃｈ Ｉｎｓｔｉｔｕｔｅ Ｃｏ．， Ｌｔｄ．， Ｓｈａｎｇｈａｉ ２００００２， Ｃｈｉｎａ)

Abstract:The model calculation was conducted on the prestressed concrete frame structure of the large space exhibition hall  of National Exhibition and Convention Center(Shanghai). The distribution laws and values of the secondary moment, secondary shear force, secondary axial force and secondary torque in the prestressed structure were analyzed under the influence of spatial effect. The secondary internal forces caused by prestressing in spatial structure analysis and in plane frame analysis were compared and discussed, and it was found that there were significant differences of secondary internal forces in the two cases, and effect of the spatial effect on internal force in this type of prestressed concrete structure was clarified. Through analysis, it showed that the secondary internal forces of the prestressed concrete frame structure, especially the secondary moment and secondary axial forces, are considerable, which should be taken into account in the structural design.

Keywords:prestressed concrete frame structure; spatial effect; secondary internal force; secondary moment; secondary axial force

*上海市科學(xué)技術(shù)委員會(huì)科研計(jì)劃(13231200903)，國(guó)家自然科學(xué)基金資助項(xiàng)目（５１１７８３２８，５１５７８４００）。

作者簡(jiǎn)介：熊學(xué)玉，博士，教授，博士生導(dǎo)師，Email：xueyu@#edu.cn。