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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）

［摘要］以已有試驗(yàn)數(shù)據(jù)為基礎(chǔ)，分析了配HRB500級(jí)鋼筋部分預(yù)應(yīng)力混凝土梁在靜力荷載作用下的剛度和變形的特點(diǎn)，提出了相應(yīng)的計(jì)算方法。明確了HRB500級(jí)鋼筋用于預(yù)應(yīng)力混凝土結(jié)構(gòu)中的剛度計(jì)算方法。探討了配HRB500級(jí)鋼筋部分預(yù)應(yīng)力混凝土梁的延性特點(diǎn)及影響延性的因素。為配高強(qiáng)鋼筋的預(yù)應(yīng)力混凝土結(jié)構(gòu)設(shè)計(jì)和剛度變形計(jì)算提供了一定的參考。

［關(guān)鍵詞］預(yù)應(yīng)力混凝土結(jié)構(gòu)； 高強(qiáng)鋼筋； 剛度

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)08-0056-04

Stiffness analysis of partially prestressed concrete flexural members equipped with HRB500 highstrength reinforcementXiong Xueyu1,2, Wang Yiqingzi1, Hua Nan1

(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)

Abstract:Based on the existing experimental data, stiffness and deformation characteristics of partially prestressed concrete beams equipped with HRB500 high-strength reinforcement under static loading were analyzed and corresponding calculation method was put forward. Stiffness calculation method of prestressed concrete structure equipped with HRB500 high-strength reinforcement was clarified. The characteristics and influence factor of ductility of partially prestressed concrete beams equipped with HRB500 high-strength reinforcement were discussed. Some references for the distribution of high strength steel prestressed concrete structure design and stiffness calculation were provided.

Keywords:prestressed concrete structure; high strength steel bar; stiffness

*國家自然科學(xué)基金資助項(xiàng)目（５１１７８３２８，５１５７８４００），住房城鄉(xiāng)建設(shè)部研究開發(fā)項(xiàng)目（２０１６-Ｋ5-０２０），上海市科學(xué)技術(shù)委員會(huì)科研計(jì)劃項(xiàng)目（１６ＤＺ１２０１６００,13231200903），上海市住房和城鄉(xiāng)建設(shè)管理委員會(huì)科研項(xiàng)目（２０１６-００１-００３）。

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