中文摘要：

根据现浇桥面板的T形组合简支板一梁桥结构特点，采用平面模型（偏心压力法、刚接板（梁）法）和空间模型（有限单元法）计算该组合简支板——梁桥荷载横向分布系数。运用通用结构分析软件ANSYS将该组合板——梁桥离散成空间有限元，分析该桥荷载横向分布系数变化规律，并将刚接板（梁）法及ANASYS解法计算结果与实测结果进行对比研究。研究结果表明：偏心压力法不适于计算该类组合板梁桥荷载横向分布系数；刚接板（梁）法全桥各截面采用同一横向分布系数并不精确，而ANSYS计算结果能与实测值较好的吻合；同时提出了适合该类桥型的横向分布系数计算方法，并建议了更加准确的计算方法。

英文摘要：

According to their structure characteristics, the live-load distribution coefficients of simple span slab-on-girders concrete bridges are studied using method of slab （girder） with transverse rigid joints and finite element method. The changing principles of live-load distribution coefficient are analyzed using construction software ANSYS. Results between finite element method using ANSYS and slab （girder） with transverse rigid joints are compared, which shows that the rigid beam method is not suitable for studying live-load distribution coefficients of this type bridge, that cross section adopting the same distribution coefficient is not accurate, and that the finite element method is identical with the result of actual measurement. Finally, the project believes that the live-load distribution coefficients are suitable for this type bridge, and the accurate computational method is suggested.