钻孔法测试预应力箱梁现存应力的有限元分析

On finite element analysis of existing stresses of prestressed box girder measured by hole drilling method

利用ANSYS有限元软件建立预应力混凝土小箱梁计算模型,基于对广州市花都区新赤公路工程第三标段工程背景的研究,对按实际工程设计尺寸建立的计算模型进行验证,对比分析了小箱梁钻孔前后的应力状况,得出了一些有益的结论。

The paper adopts the ANSYS finite element software to establish the calculation model for the prestressed small girder box, recalculates the calculation model established by the design sizes of factual projects based on the research on the No. 3 segment of Xinchi road at Huadu dis- trict of Guangzhou, compares and analyzes the stressed circumstance before and after the hole drilling of the small box girders, and achieves some helpful conclusion.