东海风电场黏土不排水抗剪强度的静力触探标定

吴彩虹; 宋跃; 代加林; 俞剑; 顾晓强

doi:doi:10.19912/j.0254-0096.tynxb.2024-1500

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东海风电场黏土不排水抗剪强度的静力触探标定

更新时间：2026-02-06

- 东海风电场黏土不排水抗剪强度的静力触探标定
- Vol. 47, Issue 1, Pages: 468-475(2026)
- 作者机构：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-1500
  CLC： TU411
- Online First：05 February 2026，
  
  Published：05 February 2026
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吴彩虹, 宋跃, 代加林, et al. 东海风电场黏土不排水抗剪强度的静力触探标定[J]. 2026, 47(1): 468-475.
DOI：

吴彩虹, 宋跃, 代加林, et al. 东海风电场黏土不排水抗剪强度的静力触探标定[J]. 2026, 47(1): 468-475. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1500.

摘要

该研究开展原位和室内的CPT、十字板剪切（VST）试验

分析土体在不同深度下的抗剪峰值强度（Sup）、抗剪残余强度（Su）

以及相应的Nkp和Nkr的取值。依据原位和室内Nk系数结果计算得到上海黏土Su预测值。研究结果表明

原位试验浅层土体的Sup和Sur随深度增加而增大

而这两者在较深土层中差距较小。计算得到的Nkp波动范围较Nkr小。室内试验中

黏土固结所需时间较短

且在相同上覆应力下不同深度的土体抗剪强度差异较小。原位和室内试验单一土层Nkp、Nkr结果差异不大

使用Nkp可预测原位不同深度土体Su

Abstract

The cone factor （） can be used to estimate the undrained shear strength （） of clay

which in turn enables the calculation of the bearing capacity of offshore wind turbine foundations based on empirical correlations. In this study

both in-situ and laboratory cone penetration tests （CPT）

together with vane shear tests （VST）

were conducted to analyze the peak shear strength （） and residual shear strength （） of soil at various depths

as well as the corresponding and values. Based on the obtained in-situ and laboratory coefficients

the predicted values for Shanghai clay were calculated. The results indicate that both Sup and Sur in the shallow soil layers increase with depth

while their difference becomes less significant in deeper layers. The fluctuation range of was found to be smaller than that for . In the laboratory tests

the required consolidation time for the clay was short

and the variation in shear strength at different depths under the same overburden stress was not pronounced. Furthermore

the and values obtained from both in-situ and laboratory tests for a given soil layer showed little difference

suggesting that at various depths can be reliably predicted using .

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