论文部分内容阅读
主要研究具有大直径d（2.134m）、深贯入 l（96m）、小桩距 Sa（3.507m,其桩间距 Sa与桩径 d之比仅为 1.643）,而且桩数少（仅为一列,共2根桩）等显著特点的某海洋气田平台桩基群桩的竖向承载力的超群桩效应。现有的多种相关规范,并没有涉及到本文所述特殊条件下单列群桩竖向承载力的分析计算。因此,考虑管桩内土塞的闭塞效应,采用线弹性理论、港口工程群桩承载力折减系数法、建筑桩基规范法以及凭借已有模型试验结果进行计算等几种方法来分析该群桩竖向承载力的超群桩效应。通过进一步分析,总结出分析该类群桩效应问题较为实用的方法,以期对工程实践提供参考。
The main study has a large diameter d (2.134m), deep penetration l (96m), small pile spacing Sa (3.507m, the pile spacing Sa and pile diameter d ratio of only 1.643), and the number of small pile (only one column , A total of 2 piles) and other significant features of a marine gas field pile pile group pile vertical pile bearing effect of superior pile. The existing relevant norms do not relate to the analysis and calculation of the vertical bearing capacity of single pile under the special conditions mentioned in this paper. Therefore, taking into account the occlusion effect of the soil plug in the pipe pile, several methods, such as the linear elasticity theory, the reduction coefficient of the pile group bearing capacity of the port engineering, the construction pile foundation method, and the calculation based on the existing model test results, are used to analyze this group Super Pile Piles Effect of Pile Vertical Bearing Capacity. Through further analysis, this paper summarizes the practical method of analyzing the effect of the pile groups in order to provide reference for engineering practice.