国际中文开源期刊平台

桥梁工程参数统计

Statistics of bridge engineering parameters

统计与应用研究 / 2019,1(2)：43-51 / 2019-12-18 631 667

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• 作者： 魏全友     
• 单位：

  东海建设集团有限公司，德州

• 关键词： 桥梁桩基础；岩土均匀性；变化随机性；小样本统计；划分区段；岩 土参数标准值
• bridge pile foundation; geotechnical uniformity; randomness of change; small sample statistics; division of sections; standard values of geotechnical parameters
• 摘要： 现行若土工程勘察规范（国标）及公路规范中若土参数、若石强度标准值的确定，基本上吸取了适用于小样本的t分布统计方法。通过对东海大桥陆上段桥梁各墩的沉桩施工及静力触探Ps标准值的统计分析表明，为保证各墩台若土参数标准值95%的置信概率，在工程详勘阶段应按规范采用小样本统计。因此，对于长大桥梁，如高架道、大型立交、长大引桥等，应根据土层、土质均匀性变化情况合理划分区段进行统计，而对桥梁大型基础则应单独统计。
• the determination of geotechnical parameters and standard values of rock strength in the current geotechnical engineering investigation specifications(national standards) and highway specifications has basically absorbed the t-distribution statistical method applicable to small samples. Based on the statistical analysis of the standard values of pile sinking construction and static penetration test of each pier of Donghai Bridge on land, it is shown that in order to ensure the 95% confidence probability of the standard values of geotechnical parameters of each pier and abutment, the small sample statistics should be adopted according to the specifications in the detailed engineering exploration stage. Therefore, for long bridges, such as viaducts, large overpasses, long approach bridges, etc., it is necessary to reasonably divide the sections for statistics according to the change of soil layer and soil homogeneity, while for large bridges, it is necessary to make separate statistics.
• DOI： https://doi.org/10.35534/rsa.0102008c
• 引用： 魏全友．桥梁工程参数统计［J］．统计与应用研究，2019，1（2）：43-51．