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(1 湖南中大設(shè)計(jì)院有限公司,長(zhǎng)沙410004;2重慶大學(xué)土木工程學(xué)院,重慶 400045)
[摘要] 既有試驗(yàn)表明裝配式鋼梁-預(yù)制柱(PSC)組合框架結(jié)構(gòu)在中、高烈度地區(qū)具有良好的抗震性能,但不同的柱-基礎(chǔ)連接形式對(duì)結(jié)構(gòu)的抗震耗能能力影響有所不同。本文運(yùn)用有限元分析軟件OpenSee所提供的混凝土模型Concrete02、鋼筋模型Steel02以及粘結(jié)-滑移命令Bond-SP01重點(diǎn)模擬了既有試驗(yàn)中以機(jī)械連接器和縱筋錨固兩種預(yù)制柱-基礎(chǔ)連接方式連接的預(yù)制混凝土柱-鋼梁組合框架結(jié)構(gòu)構(gòu)件的滯回曲線。分析結(jié)果表明:本文提出的數(shù)值模擬分析方法能夠較好地模擬出兩種不同的柱-基礎(chǔ)形式對(duì)整體框架在低周反復(fù)荷載作用下的不同性能,滯回環(huán)和峰值力與試驗(yàn)結(jié)果能夠較好地吻合,并反映了一定的捏縮效應(yīng)。該方法能夠有效應(yīng)用于裝配式鋼梁-預(yù)制柱組合框架抗震性能的數(shù)值模擬。
[關(guān)鍵詞]OpenSees;PCS組合框架結(jié)構(gòu);數(shù)值分析
中圖分類(lèi)號(hào):TU398+.2
Numerical analysis of seismic behavior for assembled steel beam and PC column composite moment frames based on OpenSees
He Fei1, Fu Yushan2, Wu Yuntian2
(1 Hunan Zhongda Design Institute, Ltd., Changsha 410004, China;
2 School of Civil Engineering,Chongqing University,Chongqing 400045, China)
Abstract: According to the existed experiment, assembled steel beam and precast reinforced concrete column composite moment frames have well behavior in medium and high seismic regions. However the energy dissipation capacity would be influenced by different column-footing connection types. Finite element software OpenSees was used to build the models of column-footing connection by mechanical couplers and dowel anchorage. Numerical results indicate that analysis model based on OpenSees can reflect the differences in seismic behaviors of these two test subassemblies. The proposed numerical analysis can be successfully applied to stimulation of assembled steel beam and precast reinforced concrete column composite moment frames.
Keywords: OpenSees; PSC composite moment frame; numerical analysis
參 考 文 獻(xiàn)
[1]伍云天,肖巖,薛梅. 裝配式鋼梁-預(yù)制柱組合框架抗震性能試驗(yàn)研究[J].建筑結(jié)構(gòu),2013,43(9):67-71.
[2]SCOTTBD, PARKR, PRIESTLEYMJN. Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates [J]. ACI Structural Journal, 1982, 79:13-27.
[3]MENEGOTTOM, PINTOPE. Method of analysis for cyclically loaded reinforced concrete plane frames including changes in geometry and non-elastic behavior of elements under combined norm a force and bending [C]// Proceedings of the Conference on Resistance and Ultimate Deformability of Structures Acted on by Well Defined Repeated Loads. Lisbon: International Association for Bridge and Structural Engineering, 1973:15-22.
[4]ZHAN JIAN, SRITHARAN SRI. Modeling of strain penetration effects in fiber-based analysis of reinforced concrete structures [J]. ACI Structural Journal ,2007, 104(2):133-141.
[5]ZHAO JIAN, SRITHARAN SRI. Nonlinear Analysis of RC Structures with Strain Penetration Effects[C]//8th US National Conference on Earthquake Engineering ,2006:4036-4044.
作者簡(jiǎn)介:何飛,學(xué)士,工程師,Email:hf7212@qq.com
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