CAJ | 학술논문

为应对既有正交异性桥面系在工程应用中出现的诸多病害,结合钢箱梁的构造特点,提出了一种新型钢板夹心混凝土( SCS)钢—混组合桥面系,为明确该新型SCS钢—混组合桥面系的力学特性,基于等效刚度法、结合大型通用有限元程序Ansys,分别建立了新型SCS钢—混组合桥面系与传统正交异性钢桥面系的节段力学模型,并对两个节段力学模型的受力特性进行了对比分析研究。结果发现,在汽车车轮集中荷载作用下,新型SCS钢—混组合桥面系的局部抗弯刚度明显优于传统正交异性钢桥面系,桥面系纵横向刚度比值更趋于接近1.0,结构受力变得更加均衡,局部未出现过大变形,改变了传统钢桥面系的正交异性特征,改善了桥面系结构的受力,表明该新型SCS钢—混组合桥面系具有良好的力学性能。
위응대기유정교이성교면계재공정응용중출현적제다병해,결합강상량적구조특점,제출료일충신형강판협심혼응토( SCS)강—혼조합교면계,위명학해신형SCS강—혼조합교면계적역학특성,기우등효강도법、결합대형통용유한원정서Ansys,분별건립료신형SCS강—혼조합교면계여전통정교이성강교면계적절단역학모형,병대량개절단역학모형적수력특성진행료대비분석연구。결과발현,재기차차륜집중하재작용하,신형SCS강—혼조합교면계적국부항만강도명현우우전통정교이성강교면계,교면계종횡향강도비치경추우접근1.0,결구수력변득경가균형,국부미출현과대변형,개변료전통강교면계적정교이성특정,개선료교면계결구적수력,표명해신형SCS강—혼조합교면계구유량호적역학성능。
In response to many diseases associated with the deck of existing orthotropic steel bridge, combined with the structural characteristics of steel box girder, a new steel-concrete-steel ( SCS ) composite bridge deck system was proposed. To reveal the mechanical properties of the systems, based on the equivalent stiffness method, the general finite element program ANSYS was employed to set up segmental mechanical models of the new SCS composite bridge deck and the traditional or-thotropic steel bridge deck respectively. And a comparative analysis on the models was carried out to study the mechanical behaviors. The result shows that, under the concentrated wheel force, the lo-cal bending stiffness of the SCS composite bridge deck system is visibly superior to that of the tradi- <br> tional one, and the longitudinal and transverse stiffness ratio tends to be 1. 0, which balances the stress, prevents large local deformation, changes the orthotropic characteristics of the traditional steel bridge deck system, and improves the mechanical performance of bridge deck systems.