钢筋混凝土T梁受弯性能试验与数值模拟研究  

Study on the Bending Performance Test and Numerical Simulation of Reinforced Concrete T-Beams

作　　者：黄帅 Huang Shuai

机构地区：[1]山西省交通新技术发展有限公司

出　　处：《城市建筑》2024年第10期213-216,共4页Urbanism and Architecture

摘　　要：为了研究钢筋混凝土T梁的受弯性能,笔者设计了全长3.6m的T梁试验模型,采用模型试验与有限元分析方法开展研究。研究结果表明,混凝土T梁的受弯破坏模式与混凝土矩形梁不同,表现为主钢筋屈服、荷载不再增长;T梁破坏时,受压区混凝土已经进入塑性阶段,但是并未达到极限压应变;采用非线性有限元分析得到的受弯破坏模式、荷载-变形曲线与试验测试结果吻合较好,极限荷载模拟值与试验值的相对误差为4.52%,文中采用的有限元模拟方法能够准确模拟钢筋混凝土T梁的受弯行为。To investigate the bending performance of reinforced concrete T-beams,a 3.6-meter-long T-beam experimental model was designed and analyzed by using both model testing and finite element analysis techniques.The findings indicate that the bending failure mode of concrete T-beams differs from that of concrete rectangular beams,primarily due to steel bars yielding and the absence of further load increase.When the T-beam is damaged,the concrete in the compression zone has entered the plastic stage,but has not reached the ultimate compressive strain.The bending damage mode and load-deformation curve obtained by nonlinear finite element analysis are in good agreement with the experimental test results,the relative error between the simulated value of the ultimate load and the experimental value is 4.52%,and the finite element simulation method used in the paper can accurately simulate the bending behavior of reinforced concrete T-beam.

关 键 词：桥梁工程 钢筋混凝土T梁 模型试验 非线性有限元分析 

分 类 号：U448.212[建筑科学—桥梁与隧道工程]