新老混凝土结合面断裂——接触耦合分析

THE COUPLING ANALYSIS OF FRACTURE AND CONTACT FOR NEW-TO-OLD CONCRETE INTERFACE

随着现有混凝土结构的老化与损害,混凝土加固工程成为建筑领域的一个重要分支,新老混凝土结合面是加固工程的薄弱环节。界面混凝土带有大量原始裂缝和缺陷是典型的非连续结构面,除具有接触问题的特征外还包含断裂问题。本文以拱坝加高培厚工程新老坝体结合面为研究对象,通过基于表面的内聚力模型与ABAQUS强大的接触功能耦合分析来模拟新老坝体结合面工作性态。

With the increase of service period and various damage of concrete structure , Concrete reinforcement engineering becomes an important branch in the construction field, with a large number of cracks and original defects , the new-to-old concrete interface is vulnerable to destruction. Fracture problems and contact analysis must be study for non-continuous structural surface. In this paper, sur- face-based cohesive behavior and contact analysis by ABAQUS was introduced to simulate the fracture and force transfer mechanism on the interface of heightening and thickening arch dam project .