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为探讨桩基承台梁中桩-土-承台梁的相互作用,首先基于剪切位移法得出G ibson地基中刚性桩与非刚性桩桩顶荷载与桩顶位移之间的关系矩阵,通过综合方法获得承台梁的总刚度矩阵,进而获得桩基承台梁上外力与桩顶位移的关系矩阵,并编制出相应的VB计算程序。最后,基于所建立的模型和编制的计算程序,结合某算例分析了桩距、承台梁刚度对承台梁下各单桩桩顶荷载的影响,以及桩基的压缩性对各单桩桩顶位移的影响。结果表明桩距会起到调整各桩桩顶荷载的作用,承台梁存在着一个合理刚度。
In order to investigate the interaction between pile-soil-capped beam in pile-cap platform girder beam, firstly, the relationship matrix between pile-top displacement and pile-cap pile top load in G ibson foundation is obtained based on shear displacement method. Through the comprehensive method, the total stiffness matrix of the cap girder is obtained, and then the relationship matrix between the external force on the cap girder and the top of the pile cap is obtained, and the corresponding VB calculation program is compiled. Finally, based on the established model and the compiled calculation program, the influence of the pile spacing and the rigidity of the platform girder on the load of the single pile under the platform girder is analyzed with an example. And the compressibility of the pile foundation is analyzed. Effect of pile top displacement. The results show that the pile spacing will play a role in adjusting the top load of each pile, there is a reasonable rigidity of the bearing platform beam.