【摘要】 讨论了用于计算土体动力压密有限元方程的建立及其数值计算方法,给出了山西化肥厂场地动力压密的数值解,得出了相应的应力场、位移场、加速度场等,计算结果与实测结果吻合较好。采用了新的分析模型研究了强夯后土体的振动特性,同弹性模型、理想弹塑性模型进行了比较,两个工程实例的计算结果表明,提出的新模型更加优越。更多还原

【Abstract】 The establishment of finite element equation and the numerical analysis in dynamic compaction of soil are discussed. The numerical solution of dynamic compaction in the site of Shanxi Fertilizer Factory is given. The stress-field, deformation-field, acceleration-field, density-field of the foundation soil during and after dynamic consolidation (DC) are investigated and compared with practical figures. The calculation results are close to the test data. A new model is proposed and adopted to analyze the vibration characteristics of soil after DC. Two practical projects are studied and the results are compared with those of elastic model and ideal elastoplastic model. The model is shown to have great advantage in the analysis of the vibration characteristics of soil after DC.更多还原