软土地层中压入式沉井下沉的土塞效应及其影响
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易琼,廖少明,朱继文,徐伟忠
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Effect of soil plugging during press-in caisson sinking in soft ground
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Qiong YI,Shao-ming LIAO,Ji-wen ZHU,Wei-zhong XU
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| 表 1 土层的主要物理力学参数 |
| Tab.1 Physico-mechanical parameters of soil layers |
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| 土层名称 | d/m | $\gamma $/（kN·m−3） | 直剪 | ${E_{{\rm{s}}1 {\text{-}} 2}}$/MPa | ${f_{\rm{k}}}$/kPa | ${f_{{\rm{ak}}}}$/kPa | | $c$/kPa | $\varphi $/（°） | | 砂垫层 | 3.1 | 20.0 | 10.0 | 30.0 | 13.8 | 20 | 120 | | ②1淤泥 | 12.7 | 15.0 | 8.9 | 8.2 | 1.45 | 10 | 40 | | ②2淤泥 | 10.0 | 15.7 | 11.3 | 9.2 | 2 | 11 | 50 | | ④11粉质黏土 | 3.5 | 19.3 | 25.1 | 19.4 | 5.73 | 21 | 140 | | ④12粉质黏土 | 6.0 | 17.7 | 14.6 | 29.9 | 8.35 | 23 | 150 | | ④2黏土 | 15.2 | 17.8 | 25.6 | 11.1 | 3.93 | 18 | 120 | | ⑤2黏土 | 19.5 | 18.1 | 29.4 | 14.2 | 4.96 | 20 | 130 |
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