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考虑粘结滑移效应的型钢混凝土梁柱单元
引用本文:郑山锁,张传超,李磊.考虑粘结滑移效应的型钢混凝土梁柱单元[J].计算力学学报,2011,28(6):909-914.
作者姓名:郑山锁  张传超  李磊
作者单位:西安建筑科技大学,西安,710055
基金项目:国家自然科学基金重大研究计划培育项目(90815005);国家自然科学基金(50978281,51108376)资助项目.
摘    要:本文建立了一种适用于型钢混凝土梁柱构件的非线性梁柱单元,并在建模中考虑了粘结滑移效应。根据型钢混凝土自由体的受力特点,建立了考虑界面粘结滑移时单元的控制微分方程和变形协调方程。基于有限单元柔度法和纤维模型的基本思想,选取了合适的力的插值函数。根据最小势能原理,推导了单元的柔度矩阵,提出了基于柔度法的单元状态确定方法。最...

关 键 词:梁柱单元  粘结滑移  柔度法  纤维模型  非线性
收稿时间:4/8/2010 12:00:00 AM
修稿时间:2010/5/28 0:00:00

Bond-slip considered beam-column elements for concrete encased steel column
ZHENG Shan-suo,ZHANG Chuan-chao and LI Lei.Bond-slip considered beam-column elements for concrete encased steel column[J].Chinese Journal of Computational Mechanics,2011,28(6):909-914.
Authors:ZHENG Shan-suo  ZHANG Chuan-chao and LI Lei
Institution:Xi'an University of Achitecture and Technology, Shanxi 710055, China;Xi'an University of Achitecture and Technology, Shanxi 710055, China;Xi'an University of Achitecture and Technology, Shanxi 710055, China
Abstract:This paper presents a new steel reinforced concrete (SRC) finite element that explicitly accounts for the slip between the steel and the surrounding concrete. According to the force characteristics of steel reinforced concrete (SRC) free body,the equations of equilibrium and compatibility are established. Based on the analytical model of force-based beam-column elements and fiber-section, the appropriate force interpolation function is determined. According to the principle of minimum potential energy,the flexibility matrix and the analytical for element state determinations are proposed.Finally,comparison with the experimental test on steel reinforced concrete (SRC)columns shows that the prediction with the new model is in good agreement with the test, and the model is of high accuracy and calculation speed.
Keywords:steel reinforced concrete(SRC)  bond-slip  flexibility method  fiber model  nonlinear
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