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(1 湖州職業(yè)技術(shù)學(xué)院建筑工程學(xué)院, 湖州 313000;2 浙江力豐建筑加固工程有限公司, 湖州 313000)

摘要: 在調(diào)查統(tǒng)計(jì)浙北地區(qū)軟土的工程勘察資料的基礎(chǔ)上,對(duì)軟土靜力觸探參數(shù)與室內(nèi)土工試驗(yàn)強(qiáng)度參數(shù)及地基承載力特征值進(jìn)行相關(guān)性分析. 建立浙北地區(qū)軟土靜力觸探參數(shù)(錐尖阻力 qc、錐側(cè)摩阻力 fs)與室內(nèi)土工試驗(yàn)強(qiáng)度參數(shù)(黏聚力 c、內(nèi)摩擦角 φ)、變形參數(shù)(孔隙比 e、壓縮模量 Es)之間的回歸公式及靜力觸探參數(shù) qc、 fs 與平板載荷試驗(yàn)得到的地基承載力特征值 fak 之間的回歸公式. 結(jié)果表明,當(dāng) qc 在 0. 4 ~ 0. 7MPa、 fs 在 8 ~ 13kPa 范圍內(nèi),回歸公式擬合度較好;相比于 fs,利用 qc 確定強(qiáng)度參數(shù)的回歸公式可靠度更高;利用 qc、 fs 確定變形參數(shù)的回歸公式可靠度比較接近;靜力觸探參數(shù)反映地基承載力比反映強(qiáng)度參數(shù)、變形參數(shù)可靠度更高. 研究結(jié)果可為區(qū)域性軟土勘察、設(shè)計(jì)及施工提供工程參考.

關(guān)鍵詞: 軟土; 靜力觸探參數(shù); 強(qiáng)度參數(shù); 變形參數(shù); 地基承載力

中圖分類號(hào):TU447 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)09-0133-04

DOI:10. 19701 / j. jzjg. LS220170

Correlation analysis of various exploration results of soft soil in northern area of Zhejiang province

HU Jian1, WANG Fang1, ZHU Lei2, XU Xueyong1

(1 School of Architecture and Engineering, Huzhou Vocational Tech Academy, Huzhou 313000, China;2 Zhejiang Lifeng Building Reinforcement Engineering Co. , Ltd. , Huzhou 313000, China)

Abstract: Based on the investigation and statistics of the engineering investigation data of the soft soil in northern area ofZhejiang province, the correlation analysis on static penetration parameters and the strength parameters of laboratory soilexperiment and the characteristic values of foundation bearing capacity of the soft soil was carried out. The regressionformula between static exploration parameters (cone tip resistance qc, cone side friction resistance fs),strength parameters(cohesion c, internal friction angle φ) of laboratory soil experiment, deformation parameters ( void ratio e, compressivemodulus Es) of soft soil in northern area of Zhejiang province was established, and the regression formula between staticexploration parameters qc, fsand characteristic values of foundation bearing capacity obtained from plate load tests was alsoestablished. The results show that when qcis in the range of 0. 4 ~ 0. 7MPa and fsis in the range of 8 ~ 13kPa, theregression formula has a good fit. Compared with fs, the regression formula of using qcto determine strength parameters ismore reliable, while the regression formula of using qcand fsto determine the deformation parameters is closer to thereliability. The static penetration parameters reflect the foundation bearing capacity more reliably than the strength anddeformation parameters. The research results can provide engineering reference for regional soft soil survey, design andconstruction.

Keywords:soft soil; static penetration parameter; strength parameter; deformation parameter; foundation bearing capacity

∗湖州市科技計(jì)劃項(xiàng)目(2020YZ07),浙江省基礎(chǔ)公益研究計(jì)劃項(xiàng)目(LGF22D020002),浙江省 2020 年度高校訪問工程師校企合作項(xiàng)目(FG2020167).

第一作者:胡健,碩士,講師,主要從事邊坡工程、軟基處理等方向的研究,Email:493268163@ qq. com.

[引用本文] 胡健,王芳,朱磊,等. 浙北地區(qū)軟土多種勘察成果相關(guān)性分析[ J]. 建筑結(jié)構(gòu),2023,53(9):133-136.HU Jian,WANG Fang,ZHU Lei,et al. Correlation analysis of various exploration results of soft soil in northern area ofZhejiang province[J]. Building Structure,2023,53(9):133-136.