發(fā)布時間：2018-03-29 18:11

  本文選題：軟黏土　切入點(diǎn)：壓縮指數(shù)　出處：《巖土力學(xué)》2017年09期

【摘要】：國內(nèi)學(xué)者對我國沿海各地區(qū)軟土的壓縮指數(shù)與物理指標(biāo)的相關(guān)性進(jìn)行了詳細(xì)的研究,但針對這些統(tǒng)計關(guān)系的整體分析以及與國外研究成果的對比仍然比較缺乏。通過對比國外不同地區(qū)的壓縮指數(shù)與液限(8個)、壓縮指數(shù)與初始孔隙比(7個)、壓縮指數(shù)與天然含水率(6個)的關(guān)系式,發(fā)現(xiàn)壓縮指數(shù)與天然含水率之間的相關(guān)性較好,并給出了一個適用范圍更廣的統(tǒng)計關(guān)系。收集我國沿海多個地區(qū)的壓縮指數(shù)與天然含水率統(tǒng)計關(guān)系式以及試驗(yàn)數(shù)據(jù),對比發(fā)現(xiàn)壓縮指數(shù)與天然含水率的線性關(guān)系整體上可以分為兩類:南方地區(qū)(深圳、廣州)具有較低的斜率,約為0.008,與國外的0.01較為接近;而北方地區(qū)(天津、連云港、上海)具有較大斜率,約為0.02。這可能與土的結(jié)構(gòu)性有關(guān)。還就土樣質(zhì)量對壓縮指數(shù)與天然含水率統(tǒng)計關(guān)系的影響以及Lambe和Whitman提出壓縮比與天然含水率統(tǒng)計關(guān)系的適用性進(jìn)行了評價。
[Abstract]:Domestic scholars have made a detailed study on the correlation between the compression index and physical indexes of soft soil in various coastal areas of China. However, the overall analysis of these statistical relationships and the comparison with foreign research results are still lack. By comparing the compression index and liquid limit of different regions in foreign countries (8), compression index and initial void ratio (7), compression index (7). The relation between number and natural moisture content (6), It is found that there is a good correlation between compression index and natural moisture content, and a more extensive statistical relationship between compression index and natural moisture content is given. The statistical expression of compression index and natural moisture content in many coastal areas of China and the experimental data are collected. The comparison shows that the linear relationship between compression index and natural moisture content can be divided into two categories as a whole: the southern region (Shenzhen, Guangzhou) has a relatively low slope, about 0.008, which is close to 0.01 in foreign countries, while the northern region (Tianjin, Lianyungang), Shanghai) has a large slope, The effect of soil sample quality on the statistical relationship between compression index and natural moisture content and the applicability of Lambe and Whitman to the statistical relationship between compression ratio and natural moisture content were evaluated.
【作者單位】： 同濟(jì)大學(xué)土木工程學(xué)院地下建筑與工程系;麻省大學(xué)阿默斯特分校環(huán)境與土木工程系;
【分類號】：TU447

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