基于Midas-GTS的刚性网格-小型桩复合地基变形特性研究

Research on Deformation Characteristics of Rigid Grid-small Pile Composite Foundation Based on Midas-GTS

刚性网格-小型桩复合地基是一种利用张拉网、格梁、小型桩与土体协调作用而形成的一种复合地基,其中张拉网和格梁的协调作用优化了复合地基中应力传递机制,进而提高了地基的承载能力。基于Midas-GTS分析了刚性网格-小型桩复合地基的承载变形情况。结果表明:张拉网和格梁能有效调节复合地基中应力分配,进而充分发挥土体和桩体的承载能力;刚性网格-小型桩复合地基能明显提高地基承载能力,减小地基的沉降变形;张拉网和格梁能够直接或间接地提高地基的抗侧向变形能力,进而提高地基的整体性。

Rigid grid-small pile composite foundation(RGPCF)is a composite foundation formed by use of the coordination of tension reinforcement net,lattice beam,small piles and soil,wherein the coordination between tension reinforcement net and lattice beam optimizes the mechanism of stress transferring in the composite foundation,and further improve the bearing capacity of the foundation.Herein the bearing deformation of the rigid grid-small pile composite foundation was studied depending on Midas-GTS.The result shows that tension reinforcement net and lattice beam may regulate the stress distribution in the composite foundation,and then give full play of the bearing capacity of the soil mass and the piles;rigid grid-small pile composite foundation can increase its bearing capacity and decrease its settlement deformation;tension reinforcement net and lattice beam can directly or indirectly enhance its ability resistance to lateral deformation,and then improve the integrity of the foundation thereby.