CAJ | 학술논문

采用实体有限元方法分析预应力混凝土箱梁模型在重复荷载作用下的非线性力学反应。介绍了实体有限元方法分析预应力混凝土箱梁的关键技术。在裂缝分布、荷载位移滞回曲线、应变分布特征三个方面进行了有限元分析结果和试验结果的比较。结果表明：有限元计算得到的变形和破坏形态与试验结果基本一致，荷载位移滞回曲线也与试验结果吻合良好。
채용실체유한원방법분석예응력혼응토상량모형재중복하재작용하적비선성역학반응。개소료실체유한원방법분석예응력혼응토상량적관건기술。재렬봉분포、하재위이체회곡선、응변분포특정삼개방면진행료유한원분석결과화시험결과적비교。결과표명：유한원계산득도적변형화파배형태여시험결과기본일치，하재위이체회곡선야여시험결과문합량호。
The nonlinear mechanical response of prestressed concrete box girder model under repeated loading based on three-dimensional finite element method was analyzed. The key problems of three-di- mensional finite element method analysis of prestressed concrete box girder were introduced. The results of finite element analysis were put into comparison with those of experiments from three aspects including the crack distribution, load displacement hysteretic curves, and strain distribution character- istics. The results showed that deformation and failure patterns calculated from the finite element were basically consistent with that from experiment. And the calculated load displacement hysteretic curves were basically in good agreement with the test results.