基于组件法的钢管混凝土格构柱-组合箱梁节点弯矩-转角曲线计算方法

黄志1, 2, 龚莉1, 蒋丽忠1, 3, 周旺保3, 戚菁菁1

振动与冲击 ›› 2025, Vol. 44 ›› Issue (2) : 187-198.

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (2) : 187-198.
土木工程

基于组件法的钢管混凝土格构柱-组合箱梁节点弯矩-转角曲线计算方法

  • 黄志*1, 2 ,龚莉1 ,蒋丽忠1,3 ,周旺保3 ,戚菁菁1
作者信息 +

Calculation of the moment rotation curve of concrete-filled steel tubular lattice column composite box girder joints#br#

  • UANG Zhi*1,2,GONG Li1,JIANG Lizhong1,3,ZHOU Wangbao3,QI Jingjing1
Author information +
文章历史 +

摘要

为研究钢管混凝土格构柱-组合箱梁节点的弯矩-转角关系,本文提出了基于极限弯矩、初始转动刚度的四折线弯矩-转角模型。对节点进行了低周往复荷载试验,分析试验结果,得到了三种节点连接件的滞回曲线、骨架曲线以及弯矩-转角曲线。基于钢结构设计标准,提出了适用于钢管混凝土格构柱-组合箱梁节点极限弯矩计算方法;基于组件法建立了节点的初始转动刚度计算模型,分别计算得到节点的极限弯矩与初始转动刚度值,并与试验值进行了对比,误差较小,吻合良好。基于极限弯矩、初始转动刚度建立了钢管混凝土格构柱-组合箱梁节点四折线弯矩-转角模型,对比验证了模型的正确性及适用性。本文建立的四折线模型简单、精确且表达直观,可为钢管混凝土格构柱-组合箱梁节点结构设计和分析提供参考。

Abstract

To study the moment-rotation relationship of concrete-filled steel tubular (CFST) lattice column composite box girder joints, a four-fold line moment-rotation model is proposed based on the ultimate moment and initial rotational stiffness. The hysteretic curves, skeleton curves and moment rotation curves of three kinds of joints are obtained by analyzing the test results. Based on the design standard of steel structure, the calculation method of the ultimate bending moment is proposed. The initial rotational stiffness calculation model of the joint is proposed based on the component method. Based on the component method, a calculation model for the initial rotation stiffness of the joint was established, and the ultimate moment and initial rotation stiffness values of the joint were calculated and compared with the test values, showing a small error and good agreement. Based on the ultimate moment and initial rotational stiffness, a four-fold line moment rotation model for the concrete-filled steel tubular lattice column composite box girder joint was established, and the correctness and applicability of the model were verified by comparison. The four-fold line model established is simple, accurate and intuitive, providing a reference for the design and analysis of concrete-filled steel tubular lattice column composite box girder joint structures.

关键词

钢管混凝土格构柱 / 节点 / 组件法 / 弯矩-转角模型 / 极限弯矩

Key words

concrete-filled steel tubular lattice column / joint / component method / moment-rotation model / ultimate moment resistance

引用本文

导出引用
黄志1, 2, 龚莉1, 蒋丽忠1, 3, 周旺保3, 戚菁菁1. 基于组件法的钢管混凝土格构柱-组合箱梁节点弯矩-转角曲线计算方法[J]. 振动与冲击, 2025, 44(2): 187-198
UANG Zhi1, 2, GONG Li1, JIANG Lizhong1, 3, ZHOU Wangbao3, QI Jingjing1. Calculation of the moment rotation curve of concrete-filled steel tubular lattice column composite box girder joints#br#[J]. Journal of Vibration and Shock, 2025, 44(2): 187-198

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