王来贵¹，  李磊¹，周永发²
(1 辽宁工程技术大学力学与工程学院，阜新123000; 2 北京飞箭软件有限公司，北京100086)

[摘要] 为了研究结构拉张破裂的破坏规律，揭示材料破裂的机理。本文应用有限元材料破裂过程分析系统对混凝土桥墩在偏心加载条件下的受力、变形与内部裂缝萌生、扩展及破裂的全过程进行数值模拟。模拟结果显示，桥墩结构受拉应力作用发生破裂而形成不连续面，并且拉应力作用下不断形成破裂面，结构形式相应发生演化，并导致应力状态改变。随着载荷在不同位置的加载，最终确定裂缝的分布位置。数值模拟与文献试验结果较接近，对于深入了解T型桥结构的联合受力规律具有一定的参考价值．
[关键词] 桥结构；偏心加载；损伤破裂；数值模拟

Numerical simulation of damaging fracture of T-bridge structure under partiality Joading
Wang Laigui¹, Li Lei¹, Zhou Yongfa²
(1 School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China; 2 Beijing FEGEN Software Co. Ltd., Beijing 100086, China)

Abstract: In order to study the failure law of the tensional fiacture of the structure,  and reveal the mechanism of the rupture ofthe material.The process analysis system to that concrete pier applying finite element method material breaking increases energy for be loaded with lower accepting of condition in partiality, deformation and the inside rift conceive, the entire proceeding go along numerical value extended and breaking imitates. The structure simulating result display, the pier is pulled the strain effect happening brealang to form discontinuous face, is pulled soft and floury and taking form unceasingly under strain effect breaking, the structure form acts in responses evolution happened, and lead to strain state change. The loading being unlike location with loading. the distribution location ascertaining a rift ultimately, The value simulation and the literature test result are close, Regarding understood thoroughly the T bridge structure of the union stress rule has certain reference value.
Keywords: Bridge structure; Partiality loading; damaging fracture; Numerical simulation;FEPG