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(1 河南工業(yè)大學(xué)土木工程學(xué)院, 鄭州 450001; 2 河南東方建設(shè)集團(tuán)發(fā)展有限公司, 鄭州 450000)

摘要: 在 3 個(gè)剪跨比為 1. 65、軸壓比為 0. 2 的裝配式鋼-混凝土組合管(SRCT)剪力墻試件的低周往復(fù)加載試驗(yàn)基礎(chǔ)上,選用合適的單元類型和材料本構(gòu)關(guān)系等,建立了 SRCT 剪力墻的非線性數(shù)值分析模型. 考察了軸壓比、混凝土強(qiáng)度、鋼材強(qiáng)度及拉結(jié)筋布置方式等對(duì) SRCT 剪力墻水平荷載下受力性能的影響. 結(jié)果表明:數(shù)值分析方法計(jì)算值與試驗(yàn)值吻合良好,可以較好地用于 SRCT 剪力墻在水平荷載下的受力分析;隨著軸壓比、混凝土強(qiáng)度及鋼材強(qiáng)度的提高,SRCT 剪力墻峰值承載力及初始剛度均有提高,但位移延性降低;梅花式拉結(jié)筋布置的 SRCT 剪力墻與并列式布置形式的 SRCT 剪力墻初始剛度和承載力相差不大,但位移延性大于并列式布置形式的 SRCT 剪力墻;在試驗(yàn)和數(shù)值分析的基礎(chǔ)上給出影響 SRCT 剪力墻受力性能主要參數(shù)的取值范圍.

關(guān)鍵詞: 鋼-混凝土組合管剪力墻; 裝配式; 有限元分析; 剛度; 承載力; 參數(shù)分析

中圖分類號(hào): TU398. 2 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)11-0061-07

DOI:10. 19701 / j. jzjg. LS210004

Finite element analysis of precast SRCT shear wall under horizontal load

PANG Rui1, LIU Yuhao1, DU Feng2, ZHAO Hanyu1

(1 College of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China;2 Henan Dongfang Construction & Development Group Co. , Ltd. , Zhengzhou 450000, China)

Abstract: Nonlinear numerical analysis model of steel-concrete composite tube ( SRCT) shear wall was established byselecting the appropriate element type and material constitutive relations based on the low-cycle reciprocating loading tests ofthree precast SRCT shear wall specimens with shear span ratio of 1. 65 and axial compression ratio of 0. 2. The influences ofthe axial compression ratio, concrete strength, steel strength and the arrangement of the tie-bars on the mechanicalproperties of the SRCT shear wall under horizontal load were investigated. The results show that the calculated values of thenumerical analysis are in good agreement with the test values, the numerical method can be used for SRCT shear wallanalysis under horizontal load. With the increase of axial compression ratio, concrete strength and steel strength, the peakbearing capacity and initial stiffness of SRCT shear wall increase, but the displacement ductility decreases. The initialstiffness and bearing capacity of SRCT shear wall with plum-style tie-bar arrangement are not much different from that ofSRCT shear wall with parallel arrangement, but displacement ductility of SRCT shear wall is better than that of SRCT shearwall with parallel arrangement. The ranges of main parameters affecting the mechanical performance of SRCT shear wallwere proposed on basis of the test and numerical analysis.

Keywords: steel-concrete composite tube shear wall; precast; finite element analysis; stiffness; bearing capacity;parameter analysis

∗國(guó)家自然科學(xué)基金(52278172),中原青年拔尖人才支持項(xiàng)目(ZYQR201912170),河南工業(yè)大學(xué)自科創(chuàng)新基金支持計(jì)劃(2022ZKCJ05),河南省糧油倉(cāng)儲(chǔ)建筑與安全重點(diǎn)實(shí)驗(yàn)室開放課題(2021KF-02).

第一作者:龐瑞,博士,教授,博士生導(dǎo)師,主要從事裝配式混凝土結(jié)構(gòu)研究,Email:seupangrui@ 163. com.

[引用本文] 龐瑞,劉宇豪,杜峰,等. 水平荷載下裝配式鋼-混凝土組合管剪力墻受力性能有限元分析[J]. 建筑結(jié)構(gòu),2023,53(11):61-67. PANG Rui,LIU Yuhao,DU Feng,et al. Finite element analysis of precast SRCT shear wallunder horizontal load[J]. Building Structure,2023,53(11):61-67.