基于静力触探试验获取土体水平波动范围的计算方法

肖颖; 谭晓慧; 费锁柱

doi:10.3724/j.gyjz.G23021411

基于静力触探试验获取土体水平波动范围的计算方法

doi: 10.3724/j.gyjz.G23021411

合肥工业大学资源与环境工程学院, 合肥 230009

基金项目:

国家自然科学基金项目（41972278，42372302）。

详细信息

作者简介:
肖颖，硕士研究生，主要从事土体参数空间变异性的分析研究。

通讯作者:
谭晓慧，博士，教授，主要从事岩土工程的可靠度分析、岩土力学与工程、岩土工程数值分析的研究，tantan96666@126.com。

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- 被引次数: 0
出版历程
- 收稿日期: 2023-02-14
- 网络出版日期: 2025-06-07
- 刊出日期: 2025-03-20

A Method for Calculating the Horizontal Scale of Fluctuation of Soil Based on Cone Penetration Test

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China

摘要

摘要: 由于地质作用和环境影响，土体存在空间变异性。土变异的波动范围是考虑土体空间变异性进行随机场模拟时的重要参数。自相关函数法和半变异函数法在计算波动范围时要求数据分布共线且等距，为解决该局限性，实现静力触探试验（CPT）不共线且不等距情况下的水平波动范围的求解，须对CPT测孔数据采用分组归纳法进行预处理。通过对合肥4个场地黏土层的CPT测孔数据进行自相关函数法和半变异函数法计算来验证方法的可行性。计算结果表明：以平均列距（h_a）作为分组间距，自相关函数法采用相关（LGS）模型，半变异函数法采用平方指数型（SQX）模型适用于测孔不共线且不等距情况下水平波动范围的求解。
- 空间变异性 /
- 水平波动范围 /
- 黏土 /
- 随机场理论 /
- 地质统计学
Abstract: Due to geological and environmental effects， the soil mass has spatial variability. The fluctuation scale of soil parameters is an important parameter for random field simulation when the spatial variability is taken into account. The auto-correlation function method and semi-variation function method are used to calculate the fluctuation scale， which requires the data distribution to be collinear and equidistant. To solve this limitation and estimate horizontal scale of fluctuation in the condition that the location of cone penetration tests （CPT） is neither collinear nor equidistant， it is necessary to preprocess the CPT sounding hole data by the grouping and induction method. The feasibility of the method was verified by calculating the horizontal scales of fluctuation with the CPT data of clay layers in four sites in Hefei by the auto-correlation function method and the semi-variation method. The results showed that it would be best to use the mean column distance （h_a） as the group spacing， the （LGS） model was used in the auto-correlation function method， and the semi-variation function method using the （SQX） model was suitable for solving the horizontal scales of fluctuation of non-collinear and non-equidistant sounding holes.
- spatial variability /
- horizontal scale of fluctuation /
- clay /
- random field theory /
- geostatistics

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参考文献(23)

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