双柱式桥墩的有限元静力分析

Finite Element Static Analysis of Double-Column Piers

摘要: 为了研究荷载作用对山区双柱式桥墩的影响，采用ABAQUS建立双柱式桥墩模型，模拟了受到荷载作用下的双柱式桥墩，并对桥墩的应力位移等进行了分析。以重庆某山区的双柱式桥墩为例，对双柱式桥墩施加300 KN荷载，在荷载作用下进行应力位移分析，并对1/4处、1/2处和3/4处三个控制点进行分析。经过模型分析之后可以得出：在300 KN大小荷载下，双柱式桥墩混凝土部分盖梁中部受到的应力较大，由上至下1 m处的位移较大，钢筋笼在与盖梁连接内侧处的应力与位移都较大，并获得了1/4处、1/2处和3/4处三个控制点的应力位移值，一旦遇到过大荷载或者其他的破坏容易造成损伤，研究桥墩的受力情况可以对桥墩的破坏形式研究打好基础，也可以为如何加固桥墩提供方向。

Abstract: In order to study the influence of load on double-column piers in mountainous areas, ABAQUS was used to establish a double-column pier model, simulate the double-column pier under load, and analyze the stress-strain of the pier. Taking the double-column pier in a mountainous area of Chongqing as an example, a 300 KN load is applied to the double-column pier, and the stress-strain analysis is carried out under the load, and the three control points at 1/4, 1/2 and 3/4 are analyzed. The stress-strain values of the three control points at 1/2 and 3/4, once encountering excessive load or other damage is easy to cause damage. Studying the force of the pier can lay a good foundation for the study of the failure form of the pier, and can also provide directions for how to strengthen the pier.