【摘要】：我國海岸線約有四分之一屬于淤泥質(zhì)海岸,而且每年還因吹填與疏浚會產(chǎn)生大片的淤泥地基,這類超軟弱地基的閑置或廢棄是對土地資源的極大浪費。基于合理開發(fā)利用淤泥資源的理念,本文從日本引入一種新穎的原位淤泥固化技術——SLM工法,從理論推導、數(shù)值模擬等方面深入分析淤泥地基上覆固化層的承載性能,推導出考慮應力擴散作用與封閉作用的地基臨界荷載q_(1/4)公式。同時,工程實例顯示地基臨界荷載q_(1/4)的計算結(jié)果與地基承載力特征值fa的模擬結(jié)果較為接近,對今后的設計工作有一定指導意義。
[Abstract]:About 1/4 of China's coastline belongs to silty shoreline, and every year a large area of silt foundation will be produced because of dredging and dredging. The idle or abandoned super-soft ground is a great waste of land resources. Based on the idea of reasonable exploitation and utilization of sludge resources, this paper introduces a new in-situ sludge solidification technology-SLM construction method from Japan, and analyzes the bearing capacity of the solidified layer on the silt foundation from the aspects of theoretical derivation and numerical simulation. The formula of critical load Q _ (1) ~ (4) considering stress diffusion and closure is derived. At the same time, the engineering example shows that the calculation result of the critical load Q1 ~ (4) is close to the simulation result of the characteristic value fa of the foundation bearing capacity, which has some guiding significance for the design work in the future.
【作者單位】： 上海巖土工程勘察設計研究院有限公司;
【分類號】：TU447
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本文編號：2444265