基于ABAQUS的预应力混凝土矮肋T梁承载力参数研究

Research on Bearing Capacity Parameters of Prestressed Concrete Short Rib T-Beam Based on ABAQUS

摘要: 为了研究预应力混凝土梁矮肋T承载力的主要影响参数，本文通过ABAQUS有限元软件建立32 m两跨预应力混凝土连续矮肋T梁的非线性模型，并通过控制参数法，对影响承载力的主要参数进行分析，结果表明：初始预应力、预应力比率的增加，可极大提高梁的正常使用极限荷载；受拉区配筋率的提高，不仅可提高梁的正常使用极限荷载，也可提高梁的承载能力极限荷载；混凝土强度等级与受压筋配筋率的提高对梁的承载力影响较小。

Abstract: In order to study the main influencing parameters of the bearing capacity of the prestressed con-crete short rib T, this paper establishes the nonlinear model of the 32 m two span prestressed con-crete continuous short rib T-beam by ABAQUS finite element software, and analyzes the main pa-rameters affecting the bearing capacity by the control parameter method. The results show that the increase of initial prestressing force and prestressing force ratio can greatly improve the ser-viceability limit load of the beam; the increase of the reinforcement ratio in the tension area can not only increase the serviceability limit load of the beam, but also increase the bearing capacity limit load of the beam; the increase of the concrete strength grade and the compression reinforce-ment ratio has little effect on the bearing capacity of the beam.