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为了得到单箱多室波形钢腹板简支箱梁偏载系数的简化计算方法,用刚性横梁法推导了单箱多室波形钢腹板箱梁荷载横向分布系数的计算公式,通过有限元建模计算单箱多室波形钢腹板箱梁的偏载系数,并对影响偏载系数的因素进行参数敏感性分析。基于偏载系数与荷载横向分布的关系,提出偏载系数的简化计算公式,利用该公式对某工程实例进行了偏载系数计算。结果表明,影响正应力偏载系数及剪应力偏载系数的最主要因素是宽跨比,提出的偏载系数简化计算公式适用于不超过5室,单室宽度与跨径比介于0.08~0.24的单箱多室波形钢直腹板箱梁正应力偏载系数及剪应力偏载系数的求解。
In order to get simplified calculation method of partial load coefficient of single box multi-room corrugated steel web simply-supported box girder, the formula of transverse load distribution coefficient of single box multi-chamber corrugated steel web box girder is deduced by rigid beam method. The single-box multi-room corrugated steel web box girder’s partial load coefficient was calculated and the parameter sensitivity analysis was carried out on the factors affecting the partial load factor. Based on the relationship between partial load coefficient and load lateral distribution, a simplified calculation formula of partial load coefficient is proposed. By using this formula, the partial load coefficient of a project is calculated. The results show that the main factor affecting the partial load coefficient of normal stress and the partial load coefficient of shear stress is the ratio of width to span. The simplified formula of partial load coefficient proposed is suitable for no more than 5 rooms, Solution of Normal Stress Partial Load Coefficient and Shear Stress Eccentricity Load Coefficient of Single Box Multi - Walled Steel Box Girder with.