钢筋滑移对连续桥面板简支工字梁的影响分析

Analysis of the Influence of Slip of Reinforcing Bar on Simply Supported I-Beam with Continuous Bridge Deck

科研工作者和工程师们一直致力于研究钢筋滑移效应对于结构分析的影响和作用规律,而简支工字梁桥墩处连续桥面板的空间应力状态十分复杂。因此,论文主要基于多尺度非线性有限元模型研究了钢筋滑移对简支工字梁连续桥面板力学性能的影响规律。研究认为,通过采取合理的构造措施使钢筋发生滑移,可以有效降低纵向回旋伸出钢筋的最大拉应力值,有效控制混凝土裂缝的发生数量以及空间分布状态,但裂缝宽度和裂缝深度均有所增加。

Researchers and engineers have been devoting themselves to the study of the influence and regularity of slip effect of steel bars on structural analysis.The spatial stress state of continuous deck at pier of simple supported I-beambridge is very complex.Therefore,based on the multi-scale non-linear finite element model,this paper mainly studies the influence of steel slip on the mechanical properties of simply supported I-beam continuous bridge deck.It is considered that the maximum tensile stress of the longitudinal circular extension bar can be effectively reduced and the number and spatial distribution of concrete cracks can be effectively controlled by adopting reasonable structural measures,but thewidth and depth of cracks have increased.