[提要]  结合一实例，应用有限元法分别对板上和板下肋梁式筏基进行计算分析。计算结果表明二者的力学性能是不同的。对基础计算程序TBSA-F计算手册的观点提出了不同看法，并对肋梁式筏基计算与设计提出了一些建议，供设计参考。
[关键词]  肋梁式筏基  有限元法  力学分析  刚度

Through an example, two types of beam-plate raft foundation-beam-up-plate-down and beam-down-plate-up are computed and discussed with finite element method. The results show that the relationship between beam and plate has effect on mechanics performance of the raft foundation. Some viewpoints different from TBSA-F User's Manual and suggestions for beam-plate raft foundation design are presented.
Keywords: beam-plate raft foundation; mechanics analysis; stiffness