CAJ | 학술논문

通过 Z-Soil 岩土三维分析软件，以小应变硬化土（hardening soil model with small strain stiffness， HSS）模型为基础，建立地连墙与内支撑联合支护的群体基坑开挖的三维数值模型。对基坑土体的的竖向位移以及地连墙的变形和受力进行了分析，讨论了基坑间距的影响。分析结果表明：临坑的开挖使紧邻的坑间土堤沉降增加约1倍，使群坑周边沉降增加约10％；先开挖的基坑支护结构受力、变形增大，后续开挖的基坑的地连墙顶会向先开挖基坑方向产生整体侧移，基坑间距越近，影响越明显。
통과 Z-Soil 암토삼유분석연건，이소응변경화토（hardening soil model with small strain stiffness， HSS）모형위기출，건입지련장여내지탱연합지호적군체기갱개알적삼유수치모형。대기갱토체적적수향위이이급지련장적변형화수력진행료분석，토론료기갱간거적영향。분석결과표명：림갱적개알사긴린적갱간토제침강증가약1배，사군갱주변침강증가약10％；선개알적기갱지호결구수력、변형증대，후속개알적기갱적지련장정회향선개알기갱방향산생정체측이，기갱간거월근，영향월명현。
The three-dimensional numerical model of lined up group foundation pits supported by diaphragm wall and in-ternal strut system were built with Z-Soil geotechnical FEM software based on the hardening soil model with small strain stiffness (HSS)model.The vertical displacement of soil,deformation and stress of the diaphragm wall were analyzed. The impact of pit spacing was also discussed.The analysis results show that because of the excavation of nearby pits,the settlement of embankment between pits is doubled,the settlement increases by about 10% around the pits,and the stress and deformation of the supporting structure in the excavated pit is increase.The top of the diaphragm wall of the subse-quent foundation pit move towards the direction of the excavated one.The closer pit spacing leads to the more significant the interactions.