西安建筑科技大学学报(自然科学版)

12.9级高强度螺栓连接外伸端板节点抗震性能数值分析

杨俊芬^1,2, 刘盼盼¹, 路朋¹, 何琛¹, 张钦³

(1.西安建筑科技大学土木工程学院,陕西西安 710055; 2.西部装配式建筑工业化协同创新中心,陕西西安 710055; 3.眉山中车紧固件科技有限公司,四川眉山 620000)

关键词：12.9级高强度螺栓; 外伸端板节点; 抗震性能; 参数分析; 有限元模拟

Numerical analysis of seismic performance of 12.9 grade high-strength bolt end-plate joints

YANG Junfen^{1, 2}, LIU Panpan¹, LU Peng¹, HE Chen¹, ZHANG Qin³

(1.School of Civil Engineering, Xi'an Univ. of Arch. & Tech., Xi'an 710055, China; 2.Collaborative Innovation Center for Assembled Buildings in Western China(XAUAT), Xi'an 710055, China; 3.Meishan CRRC Fastener Technology Co., Ltd., Sichuan Meishan 620000, China)

Keywords： grade-12.9 high-strength bolt; extended end-plate joint; seismic performance; parametric analysis; finite element simulation

DOI: 10.15986/j.1006-7930.2023.01.012

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摘要

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参考文献

对12.9级高强度螺栓连接的外伸端板节点抗震性能开展数值研究.利用ABAQUS验证有限元模型正确的基础上,分析外伸端板节点的螺栓直径、端板厚度及螺栓预紧力对该节点的破坏模式和抗震性能的影响.结果表明:改变螺栓直径系列试件,滞回曲线比较饱满,节点的耗能能力比较好,试件的破坏方式为端板屈曲,梁端形成塑性铰,螺栓破坏; 端板厚度系列试件的单向加载曲线初期几乎相同,节点初始转动刚度相同,但是随着端板厚度的增加,节点的承载能力明显提高,端板厚度增大后,节点的破坏形式有转变到梁翼缘的趋势; 螺栓预紧力改变,对节点的滞回曲线有一定影响,但对节点的初始转动刚度、屈服荷载、极限荷载和破坏形式等基本无影响.

Numerical research is carried out on the seismic performance of overhanging end plate joints connected by the grade-12.9 high-strength bolts. Based on the correctness of the finite element model verified by ABAQUS, the influence of bolt diameter, end plate thickness and bolt pre-tightening force on the node's failure mode and seismic performance is analyzed. Results show that:the hysteresis curve of the series of specimens changed by the bolt diameter is relatively full, and the node has good energy dissipation capacity. The failure mode of the specimen is end plate buckling, the beam end forms a plastic hinge, and the bolt is damaged; The unidirectional loading curves of the end plate thickness series specimens are almost the same at the initial stage, and the initial rotational stiffness of the joints is the same. However, as the thickness of the end plate increases, the bearing capacity of the joint is significantly improved. After the thickness of the end plate increases, the failure mode of the joint has a tendency to change to the beam flange. The change of bolt preload has a certain influence on the hysteresis curve of the joint, but has basically no influence on the initial rotational stiffness, yield load, ultimate load and failure form of the joint.

引言
1 BASE试件节点设计
2 有限元模型建立与验证
3 端板节点参数分析试件设计
4 端板节点抗震性能影响因素分析
5 结论

图1 外伸端板连接节点<br/>Fig.1 Connecting node of outrigger end plate

图1 外伸端板连接节点
Fig.1 Connecting node of outrigger end plate

图2 BASE试件节点模型尺寸<br/>Fig.2 BASE specimen node model size

图2 BASE试件节点模型尺寸
Fig.2 BASE specimen node model size

图3 钢材材料模型<br/>Fig.3 Steel material model

图3 钢材材料模型
Fig.3 Steel material model

表1 材料参数
Tab.1 Material parameters

图4 节点有限元模型<br/>Fig.4 Node finite element model

图4 节点有限元模型
Fig.4 Node finite element model

图5 加载方式
Fig.5 Loading method

图6 加载制度
Fig.6 Loading system

图7 YL-24-12.9试件节点构造详图<br/>Fig.7 Detailed diagram of node structure of YL-24-12.9 test piece

图7 YL-24-12.9试件节点构造详图
Fig.7 Detailed diagram of node structure of YL-24-12.9 test piece

图8 破坏模式对比分析<br/>Fig.8 Comparison and analysis of failure modes

图8 破坏模式对比分析
Fig.8 Comparison and analysis of failure modes

图9 滞回曲线对比分析<br/>Fig.9 Comparative analysis of hysteresis curves

图9 滞回曲线对比分析
Fig.9 Comparative analysis of hysteresis curves

表2 有限元计算和试验主要结果对比<br/>Tab.2 Comparison of main results of finite element calculation and test

表2 有限元计算和试验主要结果对比
Tab.2 Comparison of main results of finite element calculation and test

表3 端板节点参数分析试件<br/>Tab.3 Test pieces for analysis of end plate node parameters

表3 端板节点参数分析试件
Tab.3 Test pieces for analysis of end plate node parameters

图10 BASE试件端板节点应力云图<br/>Fig.10 Stress cloud diagram of the end plate node of the BASE specimen

图10 BASE试件端板节点应力云图
Fig.10 Stress cloud diagram of the end plate node of the BASE specimen

图11 BASE试件滞回曲线<br/>Fig.11 Hysteresis curve of BASE specimen

图11 BASE试件滞回曲线
Fig.11 Hysteresis curve of BASE specimen

图12 螺栓系列试件节点应力云图<br/>Fig.12 The stress cloud diagram of the bolt series test piece node

图12 螺栓系列试件节点应力云图
Fig.12 The stress cloud diagram of the bolt series test piece node

图13 螺栓系列试件滞回曲线<br/>Fig.13 Hysteresis curve of bolt series test piece

图13 螺栓系列试件滞回曲线
Fig.13 Hysteresis curve of bolt series test piece

图14 螺栓系列试件骨架曲线<br/>Fig.14 Skeleton curve of bolt series test piece

图14 螺栓系列试件骨架曲线
Fig.14 Skeleton curve of bolt series test piece

图15 螺栓系列试件螺栓应力云图<br/>Fig.15 Bolt stress cloud diagram of bolt series test piece

图15 螺栓系列试件螺栓应力云图
Fig.15 Bolt stress cloud diagram of bolt series test piece

表4 螺栓直径系列试件计算结果<br/>Tab.4 Calculation results of bolt diameter series test pieces

表4 螺栓直径系列试件计算结果
Tab.4 Calculation results of bolt diameter series test pieces

图16 端板系列试件应力云图<br/>Fig.16 Stress cloud diagram of end plate series test pieces

图16 端板系列试件应力云图
Fig.16 Stress cloud diagram of end plate series test pieces

图17 端板系列试件滞回曲线<br/>Fig.17 Hysteresis curve of end plate series test piece

图17 端板系列试件滞回曲线
Fig.17 Hysteresis curve of end plate series test piece

图18 端板系列试件骨架曲线<br/>Fig.18 Skeleton curve of end plate series test piece

图18 端板系列试件骨架曲线
Fig.18 Skeleton curve of end plate series test piece

图19 端板系列螺栓应力云图<br/>Fig.19 Stress cloud diagram of end plate series bolts

图19 端板系列螺栓应力云图
Fig.19 Stress cloud diagram of end plate series bolts

表5 端板系列试件计算结果<br/>Tab.5 Calculation results of end plate series test pieces

表5 端板系列试件计算结果
Tab.5 Calculation results of end plate series test pieces

图20 预紧力系列试件节点应力云图<br/>Fig.20 The stress cloud diagram of the pre-tightening force series test pieces

图20 预紧力系列试件节点应力云图
Fig.20 The stress cloud diagram of the pre-tightening force series test pieces

图21 预紧力系列试件滞回曲线<br/>Fig.21 Hysteresis curve of pre-tightening force series specimens

图21 预紧力系列试件滞回曲线
Fig.21 Hysteresis curve of pre-tightening force series specimens

图22 预紧力系列试件骨架曲线<br/>Fig.22 Skeleton curve of pre-tightening force series test pieces

图22 预紧力系列试件骨架曲线
Fig.22 Skeleton curve of pre-tightening force series test pieces

表6 预紧力系列试件计算结果<br/>Tab.6 Calculation results of pre-tightening force series test pieces

表6 预紧力系列试件计算结果
Tab.6 Calculation results of pre-tightening force series test pieces

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期刊信息

西安建筑科技大学学报(自然科学版)
（1957年创刊双月刊）

主管单位：陕西省教育厅

主办单位：西安建筑科技大学

主　　编：刘加平（院士）

副主编：史庆轩（常务）张引科张小龙

国内刊号：CN61-1295/TU

I S S N：1006-7930

地　　址：西安市雁塔路中段13号

国内发行：西安建筑科技大学学报编辑部

国外发行：中国出版对外贸易总公司

编辑出版：西安建筑科技大学学报编辑部

备注

引言

1 BASE试件节点设计

2 有限元模型建立与验证

3 端板节点参数分析试件设计

4 端板节点抗震性能影响因素分析

5 结论

期刊信息