基于MIDAS的桥梁加固效果分析

Analysis of Bridge Reinforcement Effect Based on MIDAS

文章利用MIDAS有限元软件,对增大截面加固法和粘贴钢板加固法这两种桥梁加固方法的加固效果进行分析,得到以下结论:增大截面加固法能有效加固桥梁结构,经加固后的T型梁截面承载能力提高约在10%～20%范围内,且加固后构件的塑性变形能力也得到一定程度的提升;粘贴钢板加固法也能有效地提高构件刚度,采用4mm钢板和8mm钢板加固后的截面承载能力提高分别处在15%～25%和20%～30%范围内,经加固后的构件的塑性变形能力得到提升,且随着加固钢板厚度的增加,提升程度越大。

This article analyzes the reinforcement effect of two bridge reinforcement methods by using finite element software:enlarged-section reinforcement method and steel plate bonding reinforcement method.The conclusion is as follows:the enlarged-section reinforcement method can effectively strengthen the bridge structure,and the bearing capacity of strengthened T section is increased by about 10%~20%,and the plastic deformation ability of strengthened component is also improved to some extent;the steel plate bonding reinforcement method can also effectively increase the stiffness of the component,the bearing capacity of the section after reinforced by 4mm steel plate and 8mm steel plate is basically improved within the range of 15%~25%and 20%~30%,and the plastic deformation ability of strengthened components is also improved,and the degree of improvement is greater with the increase of the thickness of reinforcing steel plate.