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Experimental Reseasch on Structural Performance of Double-Faced Superposed Shear Walls Under Large Eccentric Compression Loading
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摘要: 为研究桁架筋与钢筋网片的连接形式、连接部位对双面叠合混凝土剪力墙大偏心受压性能的影响,对3片双面叠合混凝土剪力墙试件进行了试验,对比分析了各试件在大偏心荷载作用下的破坏形态、变形能力、承载能力以及刚度。试验结果表明,所有试件均表现出典型的大偏心受压延性破坏特征;下弦筋与钢筋网片全部绑扎、上弦筋与钢筋网片两端绑扎的试件(DPCW-1)和上、下弦筋与钢筋网片均全部绑扎的试件(DPCW-2),在大偏心受压下表现出的破坏形态、承载能力、刚度退化特征均相似;桁架筋与钢筋网片采用焊接连接方式的试件(DPCW-3)的峰值荷载以及整个加载过程中的刚度高于采用绑扎连接方式的试件(DPCW-2);各试件均观察到桁架筋上弦筋屈服的现象,且上、下弦筋钢筋应变大致与竖向受力钢筋应变规律相似,说明桁架筋的上、下弦筋在双面叠合剪力墙承受大偏心荷载时参与受力。在试验研究基础上,采用ABAQUS有限元软件对试件进行建模分析,模拟结果与试验结果吻合较好。参数分析结果表明,当改变试件的偏心距时,随着偏心距的增大,各试件极限承载力减小,极限挠度增大;混凝土叠合面黏结系数对叠合剪力墙在大偏心受压下的极限承载力和刚度影响不大。Abstract: In order to study the influence of the connection forms and positions of truss rebars and steel meshes on the performance of double-faced superposed shear walls under large eccentric compression loading, three double-faced superposed shear wall specimens were tested. The failure mode, deformability, bearing capacity and stiffness of each specimen under large eccentric loading were compared and analyzed. The test results showed that all specimens exhibited typical ductile failure characteristics under large eccentric compression. Under large eccentric compression, the failure modes, bearing capacity and stiffnesses of specimens with the lower stringed tendons and the steel mesh fully tied but the upper stringed tendons and the steel mesh tied only at two ends (DPCW-1) or the upper and lower stringed tendons and steel mesh fully tied (DPCW-2) were the same. The ultimate bearing capacity and stiffness of the specimen with truss rebars and steel meshes welded (DPCW-3) were higher than those of the specimen DPCW-2.The upper and lower stringed tendons of all the truss rebars yielded, and the strain variations of the upper and lower stringed tendons was were roughly similar to that of the vertical rebars, which indicated that the upper and lower strings of the truss rebars participated in the force when the double-faced superposed shear wall bore large eccentric compression loading. On the basis of the experimental study, the finite element software ABAQUS was used to model and analyze the specimens, and the calculated results were in good agreement with the experimental results. The results of parameter analysis showed that the ultimate bearing capacity of all specimens decreased and the ultimate deflection increased with the increase of eccentric distance. The bond coefficient of concrete superimposed surface had little effect on the ultimate bearing capacity and stiffness of superimposed shear walls under large eccentric compression.
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[1] CUI J H, YE J. Summary of joint connection of prefabricated shear wall structural system[C]//International Conference on Civil, Architectural and Hydraulic Engineering, Progress in Industrial and Civil Engineering. 2012:999-1002. [2] 谷倩,任靖,张延宾,等.双面叠合剪力墙平面外受力性能[J].建筑科学与工程学报, 2020, 37(4):32-41. [3] 叶鹏,侯龙,徐洪.高层建筑双面叠合剪力墙的施工[J].建筑施工, 2022, 44(2):291-293. [4] HOU H T, YE H D, QU B, et al. Precast segmental reinforced concrete walls under eccentric compressive loading:An experi-mental study[J]. Engineering Structures, 2016,113:79-88. [5] AMIN A. Experimental and analytical assessment on rubberized concrete interlocking grouted masonry walls under eccentric loading[J]. Structures, 2022,44:893-903. [6] 董晶.竖向荷载作用下预制轻混凝土墙板力学性能研究[D].徐州:中国矿业大学, 2016. [7] 任帆,谷倩,谭园,等.带构造钢筋桁架双面叠合混凝土剪力墙轴心受压性能试验研究[J].工业建筑, 2022,52(8):111-118. [8] 王平山,崔家春,徐自然,等.双面叠合剪力墙结构力学性能研究[J].建筑结构, 2020, 50(18):1-8. [9] 刘阳冰,杨庆年,刘晶波,等.双钢板-混凝土剪力墙轴心受压性能试验研究[J].四川大学学报(工程科学版), 2016, 48(2):83-90. [10] 陈大川,蒋玉春,舒兴平,等.不锈钢芯板一字形墙轴心受压承载力研究[J].工业建筑, 2020, 50(2):51-58. [11] 李璟,卢武才.钢板混凝土组合剪力墙轴心受压有限元模拟与参数分析[J].钢结构(中英文), 2021, 36(9):10-18. [12] 骆玉琦,谷倩,赵端锋,等.带构造边缘构件的T形双面叠合剪力墙抗震性能研究[J].工业建筑, 2021, 51(9):90-97. [13] 谷倩,余纲,谭园,等.带构造边缘构件的L形双面叠合剪力墙抗震性能试验研究[J].建筑科学与工程学报, 2021, 38(5):47-55. [14] 李亚军,毛丰强,杜飞,等.双面叠合剪力墙在装配式住宅项目中的实例应用[J].建筑技术开发, 2021, 48(22):7-9. [15] 中华人民共和国住房和城乡建设部.装配式混凝土建筑技术标准:GB/T 51231-2016[S].北京:中国建筑工业出版社,2016. [16] 中华人民共和国住房和城乡建设部.普通混凝土力学性能试验方法标准:GB/T 50081-2002[S].北京:中国建筑工业出版社,2002. [17] 中华人民共和国国家质量监督检验检疫总局.金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1-2021[S].北京:中国标准出版社, 2021. [18] DOUGLAS T, AMIR F. Analysis and parametric study of partially composite precast concrete sandwich panels under axial loads[J/OL]. Journal of Structural Engineering, 2016, 142(10)[2016-05-12].https://doi.org/10.1061/(ASCE) ST. [19] 糜诚杰,赵宏康,方有珍,等.新型预制装配式双面叠合剪力墙抗震性能数值模拟[J].建筑技术开发, 2020, 47(19):132-134. [20] 中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB 50010-2010[S].北京:中国建筑工业出版社,2010. 期刊类型引用(5)
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