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单箱多室宽箱梁结构是一种复杂的空间结构受力体系,在桥梁设计中通常简化为平面问题引用荷载偏载系数进行结构计算,而宽箱梁桥偏载系数取值目前并没有明确的规定。本文通过有限元模拟研究不同参变量(箱梁截面尺寸、桥梁宽度、跨径等因素)对宽箱梁结构偏载系数的敏感性,得出这些参变量与因变量-偏载系数之间的变化趋势,以期通过这样的定性比较为今后单箱多室现浇箱梁桥的计算和设计提供借鉴。
Single box multi-chamber wide box girder structure is a complex force system of space structure, which is usually simplified as a plane problem in the design of the bridge, and the partial load factor of wide box girder bridge is not Clear rules. In this paper, the sensitivity of partial parameters of wide box girder with different parameters (cross-sectional dimension of box girder, bridge width, span and other factors) is studied by finite element simulation. The relationship between these parameters and the dependent variable-partial load factor With a view to provide reference for the future calculation and design of single box multi-chamber cast-in-place box girder bridge through such qualitative comparison.