本文選題：劈裂真空法 + 固結(jié)��； 參考：《揚州大學(xué)學(xué)報(自然科學(xué)版)》2016年04期

【摘要】：基于劈裂裂隙滲透性的分析,結(jié)合真空預(yù)壓負(fù)壓邊界條件,建立了劈裂真空法固結(jié)性狀分析模型,并利用理論模型分析裂隙位置、裂隙滲透性等因素對地基固結(jié)的影響.研究結(jié)果表明:理論固結(jié)模型計算得到的沉降值與室內(nèi)模型試驗結(jié)果吻合,裂隙加快了土體固結(jié)速率;當(dāng)裂隙位于地基2/3深度時,裂隙提高地基固結(jié)速率最顯著;隨著裂隙滲透性增加,地基固結(jié)速率加快,當(dāng)裂隙達到完全排水邊界時,固結(jié)速率停止增長;隨著土層厚度與砂井影響半徑比值的增大,裂隙加快地基固結(jié)的速率明顯.
[Abstract]:Based on the analysis of fracture permeability and the vacuum preloading negative pressure boundary condition, a consolidation behavior analysis model of split vacuum method is established, and the influence of fracture location and fracture permeability on the consolidation of foundation is analyzed by using the theoretical model. The results show that the settlement calculated by the theoretical consolidation model is in agreement with the results of the laboratory model test, and the consolidation rate of the soil is accelerated by the fissures, and when the fractures are located at the depth of 2 / 3 of the foundation, the consolidation rate of the foundation is increased most significantly by the fissures. With the increase of fissure permeability, the consolidation rate of foundation accelerates. When the fissure reaches the complete drainage boundary, the consolidation rate stops to increase, and with the increase of the ratio of soil thickness to the influence radius of sand well, the consolidation rate of fissures accelerates obviously.
【作者單位】： 福州大學(xué)土木工程學(xué)院;江蘇城鄉(xiāng)建設(shè)職業(yè)學(xué)院;東南大學(xué)交通學(xué)院;
【基金】：國家自然基金資助項目(51078083)
【分類號】：TU447

【參考文獻】

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