【摘要】：針對當(dāng)前水土壓力計算中很少考慮土自身性質(zhì)對其影響的研究現(xiàn)狀,以自制試驗(yàn)槽為研究工具,通過使用3種不同滲透性土樣進(jìn)行的支擋結(jié)構(gòu)上水土壓力測試研究,對比了水土壓力實(shí)測值和由水土壓力分算、水土壓力合算得到的理論計算值,分析了孔隙水壓力和土壓力的變化規(guī)律。由試驗(yàn)結(jié)果可以得到,由水土壓力合算得到結(jié)果偏小,但在一定條件下尚可以接受,在發(fā)生主動位移情況下墻后土體會產(chǎn)生負(fù)超孔壓,滲透系數(shù)影響著負(fù)超孔壓的消散和孔隙水壓力的傳遞程度,并進(jìn)一步影響支擋結(jié)構(gòu)上水土壓力的分布情況。由試驗(yàn)結(jié)果推知,當(dāng)土體滲透系數(shù)小到一定程度時,水土壓力合算的方法是合理的。
[Abstract]:In view of the fact that the influence of soil properties on soil and water pressure is seldom considered in the calculation of soil and water pressure at present, the soil and water pressure on retaining structure with three kinds of permeable soil samples is tested and studied by using self-made test tank as the research tool. The variation of pore water pressure and soil pressure is analyzed by comparing the measured values of soil and water pressure with the theoretical values obtained from the calculation of soil and water pressure and the calculation of soil and water pressure. It can be obtained from the test results that the results obtained from the calculation of soil and water pressure are small, but acceptable under certain conditions. When the active displacement occurs, the soil behind the wall will produce negative excess pore pressure. The permeability coefficient affects the dissipation of negative superpore pressure and the transfer of pore water pressure, and further influences the distribution of soil and water pressure on the retaining structure. It is inferred from the test results that when the soil permeability coefficient is small to a certain extent, the method of water and soil pressure is reasonable.
【作者單位】： 湖南大學(xué)巖土工程研究所;
【分類號】：TU432

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 黃院雄,劉國彬,劉純潔;基坑施工周圍孔隙水壓力變化規(guī)律及其應(yīng)用[J];同濟(jì)大學(xué)學(xué)報(自然科學(xué)版);1998年06期

2 楊曉軍,龔曉南;基坑開挖中考慮水壓力的土壓力計算[J];土木工程學(xué)報;1997年04期

3 胡其志,何世秀,莊心善;基坑支護(hù)結(jié)構(gòu)水土壓力的分算[J];巖土工程界;2003年12期

4 崔巖,崔京浩,吳世紅,張寅;淺埋地下結(jié)構(gòu)外水壓折減系數(shù)試驗(yàn)研究[J];巖石力學(xué)與工程學(xué)報;2000年01期

5 劉國彬,黃院雄,侯學(xué)淵;水及土壓力的實(shí)測研究[J];巖石力學(xué)與工程學(xué)報;2000年02期

6 姚秦;基坑工程的水土壓力混合算法[J];巖石力學(xué)與工程學(xué)報;2001年01期

7 李廣信;基坑支護(hù)結(jié)構(gòu)上水土壓力的分算與合算[J];巖土工程學(xué)報;2000年03期

8 陳愈炯,溫彥鋒;基坑支護(hù)結(jié)構(gòu)上的水土壓力[J];巖土工程學(xué)報;1999年02期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 徐宜和;;基坑工程技術(shù)現(xiàn)狀分析[J];四川建筑科學(xué)研究;2005年06期

2 黃，

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