钢筋混凝土梁柱节点核心区拉-压杆模型化方法研究

韩风霞; 王志军; 宋孟超; 黄宗明

doi:10.11835/j.issn.1674-4764.2010.01.012

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钢筋混凝土梁柱节点核心区拉-压杆模型化方法研究

更新时间：2023-11-28

- 钢筋混凝土梁柱节点核心区拉-压杆模型化方法研究
- StrutandTie Model Method of ReinforcedConcrete BeamColumn Joint Core
- 土木与环境工程学报（中英文） 2010年32卷第1期页码：61-65
- 作者机构：
  
  重庆大学土木工程学院,重庆,400045
- 作者简介：
- 基金信息：
  
  国家自然科学基金重大研究计划(90715002);重庆市科委自然科学基金(2006BB0019)
- DOI：10.11835/j.issn.1674-4764.2010.01.012
  中图分类号：
- 纸质出版：2010
- 稿件说明：
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韩风霞, 王志军, 宋孟超, 等. 钢筋混凝土梁柱节点核心区拉-压杆模型化方法研究[J]. 土木与环境工程学报（中英文）, 2010,32(1):61-65.

HAN Fengxia, WANG Zhijun, SONG Mengchao, et al. StrutandTie Model Method of ReinforcedConcrete BeamColumn Joint Core[J]. Journal of Civil and Environmental Engineering, 2010, 32(1): 61-65.
韩风霞, 王志军, 宋孟超, 等. 钢筋混凝土梁柱节点核心区拉-压杆模型化方法研究[J]. 土木与环境工程学报（中英文）, 2010,32(1):61-65. DOI： 10.11835/j.issn.1674-4764.2010.01.012.

HAN Fengxia, WANG Zhijun, SONG Mengchao, et al. StrutandTie Model Method of ReinforcedConcrete BeamColumn Joint Core[J]. Journal of Civil and Environmental Engineering, 2010, 32(1): 61-65. DOI： 10.11835/j.issn.1674-4764.2010.01.012.

摘要

OPENSEES(Open System for Earthquake Engineering Simulation)中的节点“宏模型”是一种模拟钢筋混凝土梁柱节点较为理想的高效单元模式，但目前该模型中确定节点核心区剪切应力应变关系的两种常用方法：修正斜压场理论（MCFT）和斜压杆模型，均存在不足；本文提出了能全面反映节点三种传力机理的拉压杆模型方法来确定剪切应力应变关系，并推导了该模型的变形协调条件、平衡方程。通过分析比较，拉压杆模型方法的计算结果与相应的梁柱节点试验结果吻合较好，能在节点配箍率变化较大的范围，更好地反映核心区的剪切应力应变关系。

Abstract

“Macro model” in OPENSEES is an ideal and effective method for simulating RC beamcolumn joint. Some disadvantages

however

exist in both the modified compression field theory (MCFT) and diagonal compression strut model

with which they are commonly used to obtain the shear stressstrain relation of joint core. A new method by means of strutandtie model (STM)

which reflected three mechanisms in joint well

was proposed to simulate the shear stressstrain response of joint core. The deformation compatibility and equilibrium condition of the model were deduced thereafter. It was indicated that the result of STM method was in good agreement with that of test data. And it could simulate more accurately the shear stressstrain response of joint core with a wide range of stirrup ratio.

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