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A platform for research: civil engineering, architecture and urbanism
Method for determining ultimate uplift bearing capacity of distributed post-grouting pile foundation
The invention relates to the technical field of pile foundation uplift ultimate bearing capacity calculation, in particular to a distributed post-grouting pile foundation uplift ultimate bearing capacity determination method which is characterized by comprising the following steps that S1, parameters of a pile foundation are obtained according to pile foundation construction data; s2, a three-dimensional finite element model is established according to the pile foundation structure size in S1; s3, selecting a soil constitutive model; s4, inputting the physical and mechanical parameters of the soil in the S1 into the soil constitutive model in the S3; s5, pile-soil interface parameters are determined according to the physical and mechanical parameters, provided in the S1, of the pile foundation and the soil; s6, according to the pile foundation loading process, a finite element model calculation step is set; s7, the finite element model is calculated and analyzed, a relation curve of the pile top load Q and the drawing amount U is obtained, and the pile body axial force distribution condition is obtained through calculation; s8, according to the Q-U curve obtained through calculation in the S7 and the pile foundation uplift ultimate bearing capacity judgment condition, the distributed post-grouting pile foundation uplift ultimate bearing capacity is determined; the ultimate uplift bearing capacity of the pile foundation calculated by the method is relatively accurate.
本发明涉及桩基抗拔极限承载力计算技术领域，尤其涉及一种分布式后压浆桩基抗拔极限承载力确定方法，其特征在于，包括如下步骤：S1、根据桩基施工资料，得到桩基的参数；S2、根据S1中的桩基结构尺寸，建立三维有限元模型；S3、选取土体本构模型；S4、将S1中土的物理力学参数输入到S3中的土体本构模型中；S5、根据S1中提供的桩基与土的物理力学参数，确定桩‑土界面参数；S6、根据桩基加载过程，设置有限元模型计算步骤；S7、对有限元模型进行计算分析，得到桩顶荷载Q与拉拔量U的关系曲线，并计算得到桩身轴力分布情况；S8、根据S7计算得到的Q‑U曲线及桩基抗拔极限承载力判定条件，确定分布式后压浆桩基抗拔极限承载力；本发明计算的桩基抗拔极限承载力较为准确。
Method for determining ultimate uplift bearing capacity of distributed post-grouting pile foundation
The invention relates to the technical field of pile foundation uplift ultimate bearing capacity calculation, in particular to a distributed post-grouting pile foundation uplift ultimate bearing capacity determination method which is characterized by comprising the following steps that S1, parameters of a pile foundation are obtained according to pile foundation construction data; s2, a three-dimensional finite element model is established according to the pile foundation structure size in S1; s3, selecting a soil constitutive model; s4, inputting the physical and mechanical parameters of the soil in the S1 into the soil constitutive model in the S3; s5, pile-soil interface parameters are determined according to the physical and mechanical parameters, provided in the S1, of the pile foundation and the soil; s6, according to the pile foundation loading process, a finite element model calculation step is set; s7, the finite element model is calculated and analyzed, a relation curve of the pile top load Q and the drawing amount U is obtained, and the pile body axial force distribution condition is obtained through calculation; s8, according to the Q-U curve obtained through calculation in the S7 and the pile foundation uplift ultimate bearing capacity judgment condition, the distributed post-grouting pile foundation uplift ultimate bearing capacity is determined; the ultimate uplift bearing capacity of the pile foundation calculated by the method is relatively accurate.
本发明涉及桩基抗拔极限承载力计算技术领域，尤其涉及一种分布式后压浆桩基抗拔极限承载力确定方法，其特征在于，包括如下步骤：S1、根据桩基施工资料，得到桩基的参数；S2、根据S1中的桩基结构尺寸，建立三维有限元模型；S3、选取土体本构模型；S4、将S1中土的物理力学参数输入到S3中的土体本构模型中；S5、根据S1中提供的桩基与土的物理力学参数，确定桩‑土界面参数；S6、根据桩基加载过程，设置有限元模型计算步骤；S7、对有限元模型进行计算分析，得到桩顶荷载Q与拉拔量U的关系曲线，并计算得到桩身轴力分布情况；S8、根据S7计算得到的Q‑U曲线及桩基抗拔极限承载力判定条件，确定分布式后压浆桩基抗拔极限承载力；本发明计算的桩基抗拔极限承载力较为准确。
Method for determining ultimate uplift bearing capacity of distributed post-grouting pile foundation
一种分布式后压浆桩基抗拔极限承载力确定方法
HU JINHUA (author) / YU XINGGUO (author) / LI XIAOLONG (author) / ZHANG WENJIE (author) / CHEN YING (author) / LIU XIAOFENG (author) / ZHONG YANHUI (author) / ZHANG BEI (author) / ZANG QUANSHENG (author) / GUO MING (author)
2024-11-29
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
| European Patent Office | 2015
| European Patent Office | 2023