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采用修正偏心压力法研究波形钢腹板连续组合箱梁桥的荷载横向分布规律。结合工程实例,利用修正偏心压力法计算某单箱三室波形钢腹板连续组合箱梁桥的荷载横向分布系数,利用空间有限元分析程序进行了数值模拟,并对其偏心荷载工况下的挠度进行了实测。将修正偏心压力法、有限元模拟方法得到的挠度值与实测挠度值进行对比。结果表明,修正偏心压力法将空间问题转化为平面问题,且充分考虑了波形钢腹板组合箱梁的抗扭作用。得到的荷载横向分布系数与有限元计算结果吻合较好。采用该方法计算波形钢腹板连续组合箱梁桥荷载横向分布是可行且偏于安全的。
Modified eccentric pressure method was used to study the transverse load distribution of continuous composite box girder bridges with corrugated steel webs. Combined with the engineering example, the load lateral distribution coefficient of a single box three-room corrugated steel web continuous composite box-girder bridge was calculated by the modified eccentric pressure method. The finite element analysis program was used to carry out numerical simulation. The deflection under eccentric load Measured. Will be corrected eccentric pressure method, finite element simulation method to obtain deflection values and measured deflection values were compared. The results show that the modified eccentric pressure method transforms the space problem into a plane problem, and takes full account of the torsional resistance of the corrugated steel web composite box girder. The obtained lateral load distribution coefficient is in good agreement with the finite element method. It is feasible and safe to use this method to calculate the transverse load distribution of corrugated steel web continuous composite box girder bridge.