碎石环梁基础在控制超大储罐地基差异沉降中的应用

Application of gravel ring beam to control differential subsidence in huge storage tanks

碎石环梁基础在大型储罐建设中的应用越来越广泛,其对地基沉降的影响尤为重要。本文结合工程实例,根据现场原位试验测试数据并结合经验值,确定并修正了土体模型参数,通过建立三维有限元模型,计算了研究区油罐地基的最终沉降量,并与现场监测数据进行对比,重点分析与比较了碎石环梁和混凝土环梁在大型储油罐强夯地基中的变形。研究结果表明,碎石环梁基础在调节罐周差异沉降方面具有明显的优势。

The ring beam of gravel foundation is more and more widely applied in large storage tanks for its significant effect on foundation subsidence control. Through a case study, soil parameters are determined based on in-situ test data and experience. A three-dimensional finite element model is established to calculate the final settlement of foundation,and compares with the field monitoring data.The ground deformation under gravel ring beam is analysed in detail,and compared with the deformation under concrete ring beam. The results show that the gravel ring beam is better than concrete ring beam to reduce differential settlement.