[1]樊禹江,张猛格,赵宇琪,等.新型装配式剪力墙摩擦抗剪与高强螺栓群抗剪承载力[J].长安大学学报(自然科学版),2025,45(3):79-89.[doi:10.19721/j.cnki.1671-8879.2025.03.007]
　FAN Yu-jiang,ZHANG Meng-ge,ZHAO Yu-qi,et al.Frictional shear resistance and high strength bolt group shear bearing capacity of new assembled shear wall[J].Journal of Chang’an University (Natural Science Edition),2025,45(3):79-89.[doi:10.19721/j.cnki.1671-8879.2025.03.007]
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新型装配式剪力墙摩擦抗剪与高强螺栓群抗剪承载力()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第45卷
期数:
2025年3期
页码:
79-89
栏目:
桥梁与隧道工程
出版日期:
2025-05-31

文章信息/Info

Title:
Frictional shear resistance and high strength bolt group shear bearing capacity of new assembled shear wall
文章编号:
1671-8879(2025)03-0079-11
作者:
樊禹江; 张猛格; 赵宇琪; 徐子轩; 李寰芳
(长安大学 建筑学院,陕西 西安 710061)
Author(s):
FAN Yu-jiang;  ZHANG Meng-ge;  ZHAO Yu-qi;  XU Zi-xuan;  LI Huan-fang
(School of Architecture, Chang'an University, Xi'an 710061, Shaanxi, China)
关键词:
桥梁工程;  摩擦抗剪;  有限元分析;  高强螺栓群;  新型装配式剪力墙
Keywords:
bridge engineering;  frictional shear resistance;  finite element analysis;  high strength bolt group;  new assembled shear wall
分类号:
U443.22
DOI:
10.19721/j.cnki.1671-8879.2025.03.007
文献标志码:
A
摘要:
为深入探讨螺栓-U型槽钢新型装配式剪力墙的摩擦抗剪机理和高强螺栓群在不同状态下的力学行为,采用ABAQUS建立了有限元模型,通过变参模拟分析了不同预紧力、摩擦因数、总距、弹性模量、钢板厚度等影响因素下结构的摩擦抗剪承载力,经多元线性回归拟合了新型装配式剪力墙摩擦抗剪承载力计算公式,同时对其完成了相应的误差分析; 基于墙体在模拟过程中所表现的不同受力状态,探讨了新型装配式剪力墙摩擦抗剪滑移机理,明确了不同受力状态转换的关键界限,并建立了不同状态下高强螺栓群抗剪承载力验算公式。研究结果表明:拟合公式计算结果与有限元模拟值之间的平均误差在3%以内,拟合公式能应用于新型装配式剪力墙摩擦抗剪设计计算中; 将水平装置两侧螺栓是否转动到弧形槽孔滑道限位点作为判别2种不利状态的关键界限,在不利状态Ⅰ,即中心螺栓尚未与弧形槽孔滑道限位点接触且两侧高强螺栓群也未接触限位点的情况下,中心螺栓先于其他高强螺栓群与螺栓孔壁接触并发生剪切破坏,因而只需验算中心螺栓的抗剪承载力; 在不利状态Ⅱ,即中心螺栓与两侧高强螺栓群均已转动到弧形槽孔滑道限位点的情况下,中心螺栓和两侧高强螺栓群均与螺栓孔壁紧密接触并产生挤压效应,因而需同时验算中心螺栓及最外侧螺栓的抗剪承载力。
Abstract:
To thoroughly investigate the frictional shear resistance mechanism of a new bolted-U channel steel assembled shear wall and the mechanical behaviors of high strength bolt group under different conditions, a finite element model was established using ABAQUS. A parametric study was conducted to analyze the frictional shear bearing capacities of the structure under different preload levels, friction coefficients, total distances, elastic moduli and steel plate thicknesses. A formula for calculating the frictional shear bearing capacity of the new assembled shear wall was fitted through the multivariate linear regression, and a corresponding error analysis was performed. The frictional shear resistance slip mechanism of the new assembled shear wall was examined based on the distinct stress states exhibited by the wall during the simulation process. The key transition boundaries between different stress states were identified, and verification formulas for the shear bearing capacity of high strength bolt group were established under different conditions. The research results show that the average error between the calculated results from the fitted formula and the finite element simulation values is within 3%, indicating that the fitted formula is applicable to the frictional shear resistance design of the new assembled shear wall. A key boundary for distinguishing two unfavorable stress states is whether the bolts on both sides of the horizontal device rotate to the limit point of the arc-shaped slot groove. At the unfavorable state Ⅰ, the central bolt has not yet contacted the limit point of the arc-shaped slot groove, and the high strength bolt groups on both sides have also not reached the limit points. The central bolt contacts the bolt hole wall earlier than others and undergoes shear failure. Therefore, only the shear bearing capacity of the central bolt needs to be checked. At the unfavorable state Ⅱ, both the central bolt and the high strength bolt groups on both sides have rotated to the limit point of the arc-shaped slot groove. They are in full contact with the bolt hole wall and produce the extrusion effect. Consequently, the shear bearing capacities of both the central bolt and the outermost bolt should be verified.2 tabs, 8 figs, 30 refs.

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备注/Memo

备注/Memo:
收稿日期:2024-11-22
基金项目:国家自然科学基金项目(51808046); 陕西省自然科学基金项目(2023-YBSF-315)
作者简介:樊禹江(1987-),男,陕西西安人,副教授,工学博士,E-mail:fanyujiangchd@163.com。
更新日期/Last Update: 2025-05-30