梁格理论在某斜交连续梁结构分析中的应用

APPLICATION OF GRILLAGE THEORY IN THE STRUCTURE OF SKEW BRIDAE OF CONTINUOUS GIRDER

研究目的:针对T型宽实体连续板梁桥受力复杂的结构特点以及用常规的结构分析方式难以对结构的受力行为进行较好把握的问题。研究方法:应用梁格理论对某斜交T型宽实体连续板梁桥进行结构计算简化,利用刚度等效的原则对原结构进行结构模拟以及运用有限元的分析方法对结构进行离散,同时利用通用有限元程序软件SAP2000对简化的粱格模型进行结构模拟分析。研究结果:为求解分析宽、斜受力复杂的连续梁、与此结构类似的箱梁以及实体板梁提供了一种实用简便的分析计算方法。研究结论:通过具体的工程实例计算,并与板壳模型计算结果进行比较,证明了该理论在工程应用中具有较好的使用价值。

Research purpose： Aim at the complicacy construction characteristics of T type breadth entity consecution the plank beam bridge and problem that it was never better managed by uses the construction analysis method of the normal regulations. Research method： based on grillage theory for the skew bridge of continuous girder to calculate and simplify about the structure, and make use of just the principle of rigidity equivalent proceeds analysis to the original construction and makes use of the analysis method of FEM proceed to scatter for the construction, at the same time utilize SAP2000 procedure of FEM to imitate analysis to simple one dose of models of grillage at the same time. Research result： For begging the solution analysis breadth, inclined suffer the continuous beam of dint sophisticate, similar with this structural a box beam as well as entity plank beams and offered a kind of practical and simple and convenient method by the continuous girder with complicated strength. Research conclusion： By calculating the engineering example and comparing with the calculating result for shell model, grillage theory has better use value in construction.