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高強(qiáng)鋼筋混凝土結(jié)構(gòu)抗震性能研究
丁紅巖1,2,劉源1,郭耀華1
摘 要

 (1 天津大學(xué)建筑工程學(xué)院, 天津 300072;2 濱海土木工程與安全教育部重點(diǎn)實(shí)驗(yàn)室(天津大學(xué)), 天津 300072)

 

[摘要]通過(guò)對(duì)3個(gè)配有HTB650級(jí)縱筋及HTHB900級(jí)箍筋的混凝土柱進(jìn)行低周反復(fù)加載試驗(yàn),研究了配置高強(qiáng)鋼筋的混凝土構(gòu)件的抗震性能。以實(shí)際工程中某12層框架結(jié)構(gòu)為背景,分別設(shè)計(jì)了配有高強(qiáng)鋼筋與普通三級(jí)鋼筋的兩個(gè)框架結(jié)構(gòu)主樓,利用有限元軟件對(duì)其進(jìn)行彈塑性分析。結(jié)果表明:配置高強(qiáng)鋼筋的試件與配置普通三級(jí)鋼筋的試件具有相近的力學(xué)特性和變化規(guī)律,但是配置高強(qiáng)鋼筋的試件可以節(jié)約用鋼量,尤其體現(xiàn)在箍筋用量上;高強(qiáng)鋼筋模型與普通三級(jí)鋼筋模型相比,自振周期略長(zhǎng),基底剪力略??;二者的最大頂點(diǎn)位移和最大層間位移角較為接近。

 

[關(guān)鍵詞]高強(qiáng)鋼筋; 抗震性能; 擬靜力試驗(yàn); 彈塑性分析

 

中圖分類號(hào):TU375      文獻(xiàn)標(biāo)識(shí)碼:A      文章編號(hào):1002-848X(2015)08-0030-05

 

Seismic behavior study on concrete structures reinforced with highstrength steel bars

Ding Hongyan1,2, Liu Yuan1, Guo Yaohua1

 (1 School of Civil Engineering, Tianjin University Tianjin 300072, China

2 Key Laboratory of Coast Civil Structure and Safety, Ministry of EducationTianjin University), Tianjin 300072, China)

 

Abstract:The seismic behaviors of three concrete columns reinforced with highstrength steel stirrups of HTB650 grade and HTHB900 grade were investigated under low cyclic reversed loading test. An 12story frame structure in practical project was taken as example, and two frame structure buildings were designed with highstrength steel bars and ordinary  third grade steel bars respectively. Elasticplastic analysis was carried out by finite element analysis software. The results show that the  specimens with highstrength steel bars and the specimens with ordinary third grade steel bars have similar mechanical properties and variation, but the former can save the amount of steel, particularly in stirrups consumption. Compared with the ordinary steel bar model, highstrength steel bar model has longer natural period and smaller base seismic force, while the maximum top displacement and maximum drift angle are closer.

Keywords: highstrength steel bar; seismic behavior; pseudostatic test elasticplastic analysis通訊作者:郭耀華,博士,Email: guoyaohua38@163.com。

 

                               參考文獻(xiàn)

1]葉列平,ASAD U Q,馬千里,等. 高強(qiáng)鋼筋對(duì)框架結(jié)構(gòu)抗震破壞機(jī)制和性能控制的研究[J. 工程抗震與加固改造,2006,28(1)1824.

2]裴智,王友權(quán),王學(xué)忠,等. HRB500鋼筋的研究開發(fā)與應(yīng)用[J. 建筑結(jié)構(gòu),200333(8)2829.

3XIAO Y, MARTIROSSYAN A. Seismic performance of highstrength concrete columnsJ. Structural Engineering,1998124(3)241251.

4]王鐵成,郝貴強(qiáng),趙海龍,等. 反復(fù)荷載作用下纖維增強(qiáng)異形柱的抗震性能試驗(yàn)[J. 天津大學(xué)學(xué)報(bào):自然科學(xué)版,201043(11)957963.

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