CAJ | 학술논문

为研究不同桥面板厚度和铰缝深度对混凝土板梁桥的刚度及受力性能的影响,建立了30组简支板梁ANSYS有限元数值模型,通过施加中载和边载,取有代表性的板厚和铰缝深度进行分析.分析结果表明,随着桥面板厚度的增加,板梁挠度及板梁底横向拉应力逐渐减小,铰缝内的横向拉应力和竖向剪应力逐渐减小;随着铰缝深度的加大,各板梁挠度差逐渐减小,板梁底横向拉应力逐渐增大,铰缝内的横向拉应力和竖向剪应力逐渐减小;并且随着桥面板厚度的增加,铰缝深度对板梁桥的刚度及受力性能的影响效果逐渐降低.最后,建议板梁桥设计采用薄板梁厚桥面板的结构形式,以提高结构的整体刚度和改善受力性能.
위연구불동교면판후도화교봉심도대혼응토판량교적강도급수력성능적영향,건립료30조간지판량ANSYS유한원수치모형,통과시가중재화변재,취유대표성적판후화교봉심도진행분석.분석결과표명,수착교면판후도적증가,판량뇨도급판량저횡향랍응력축점감소,교봉내적횡향랍응력화수향전응력축점감소;수착교봉심도적가대,각판량뇨도차축점감소,판량저횡향랍응력축점증대,교봉내적횡향랍응력화수향전응력축점감소;병차수착교면판후도적증가,교봉심도대판량교적강도급수력성능적영향효과축점강저.최후,건의판량교설계채용박판량후교면판적결구형식,이제고결구적정체강도화개선수력성능.
In order to study the effects of deck thickness and hinge depth on stiffness and mechani-cal behavior of concrete slab girder, 30 groups of simply supported concrete slab girder finite ele-ment models were built in ANSYS. Analysis had been carried out on the models of representative deck thickness and hinge joint depth with centre load and side load applied. The analysis results in-dicated that with the increase of deck thickness, the deflections of slab girder and the transverse ten-sile stresses of slab girder bottom were all decreased gradually and the transverse tensile stresses and vertical shear stresses of hinge joints were all decreased gradually. With the increase of hinge joints depth, the differences among the slab girder deflections were all decreased gradually, the transverse tensile stresses of slab bottom increased gradually and the transverse tensile stresses and vertical shear stresses of hinge joints were all decreased gradually. With the increase of deck thickness, the effects of hinge joint depth on stiffness and mechanical behavior of slab girder decreased gradually. Suggestion was given that thinner slab girder and thicker deck should be adopted in the design of slab girders, so as to improve stiffness and mechanical behavior of slab girders.