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（1 同濟大學預應力研究所， 上海 200092; 2 同濟大學先進土木工程材料教育部重點實驗室， 上海 200092）

［摘要］以已有試驗數(shù)據(jù)為基礎，分析了配HRB500級鋼筋部分預應力混凝土梁在靜力荷載作用下的剛度和變形的特點，提出了相應的計算方法。明確了HRB500級鋼筋用于預應力混凝土結構中的剛度計算方法。探討了配HRB500級鋼筋部分預應力混凝土梁的延性特點及影響延性的因素。為配高強鋼筋的預應力混凝土結構設計和剛度變形計算提供了一定的參考。

［關鍵詞］預應力混凝土結構； 高強鋼筋； 剛度

中圖分類號：TU378-2文獻標識碼：A文章編號：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

*國家自然科學基金資助項目（５１１７８３２８，５１５７８４００），住房城鄉(xiāng)建設部研究開發(fā)項目（２０１６-Ｋ5-０２０），上海市科學技術委員會科研計劃項目（１６ＤＺ１２０１６００,13231200903），上海市住房和城鄉(xiāng)建設管理委員會科研項目（２０１６-００１-００３）。

作者簡介：熊學玉，博士，教授，博士生導師，Email：xueyu@#edu.cn。