CAJ | 학술논문

采用三参数粘弹性模型,对钢-混凝土组合梁桥在长期荷载作用下的徐变性能进行了研究,并采用三维虚拟层合单元法研究这种效应以及截面由不同材料组成时结构的受力特点.在实验研究的基础上,拟合了粘弹性模型中的参数,并对钢-混凝土组合梁桥在长期荷载作用下的竖向变形和轴向应变进行了研究,通过对计算和试验结果进行对比分析验证了该法的准确性.
채용삼삼수점탄성모형,대강-혼응토조합량교재장기하재작용하적서변성능진행료연구,병채용삼유허의층합단원법연구저충효응이급절면유불동재료조성시결구적수력특점.재실험연구적기출상,의합료점탄성모형중적삼수,병대강-혼응토조합량교재장기하재작용하적수향변형화축향응변진행료연구,통과대계산화시험결과진행대비분석험증료해법적준학성.
This paper proposes a three-parameter viscoelastic model for studying the time-dependent behavior of steel-concrete composite girder bridges. The method of three-dimensional virtual laminated element(3D-VLE) was developed to analyze the effects and consider the different material properties on the cross-section. After the evaluation of the parameters, which was based on the experimental measurements, the prediction curves accounting for time-dependent behavior of the deformations and strains of the steel-concrete composite girder bridges were obtained. The correlation studies between the analytical and experimental results were conducted with the objective to establish the validity of the proposed model.