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为改善地基的不均匀沉降问题,提出一种新型基础形式——地梁-墙基组合式基础。以地梁-墙基组合式基础为研究对象,开展了不同约束条件下组合式基础受压承载能力试验,以研究该类基础的破坏过程、破坏模式,并对地梁-墙基组合式基础破坏过程进行有限元分析。结果表明,数值模拟较好地预测了该基础的破坏形态,与物理试验吻合较好;证明了该基础能够很大程度上减小上部结构的挠度变形,从而减轻由于地基不均匀沉降引起的墙体开裂,验证了该课题在建筑结构方面的可行性。
In order to improve the uneven subsidence of the foundation, a new type of foundation - ground girder-wall foundation is proposed. Based on the ground-beam-foundation composite foundation, the combined foundation compression load-bearing capacity tests under different constraints were carried out to study the failure process and failure mode of such foundation, and the ground-beam- Destruction process for finite element analysis. The results show that the numerical simulation better predicts the failure mode of the foundation, which is in good agreement with the physical experiment. It is proved that the foundation can greatly reduce the deflection deformation of the superstructure so as to reduce the wall caused by the uneven foundation settlement Body cracking, verify the feasibility of the issue in the building structure.