| 垃圾土的强度特性试验研究 |
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| 引用本文： | 旦增顿珠,介玉新,魏弋峰,李广信.垃圾土的强度特性试验研究[J].清华大学学报(自然科学版),2006,46(9):1538-1541. |
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| 作者姓名： | 旦增顿珠 介玉新 魏弋峰 李广信 |
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| 作者单位： | 1. 清华大学,水利水电工程系,北京,100084
2. 中国民航机场建设总公司,北京,100101 |
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| 摘 要： | 结合北京郊区某工地垃圾土地基的治理工程,对该场地垃圾土样的强度性质进行了室内试验,包括颗粒大小分析、三轴试验、单剪试验以及等向固结试验等。试验成果表明垃圾土中的纤维质成份具有加筋作用,能增加垃圾土的粘聚力,但对垃圾土的内摩擦角影响较小;单剪试验得到的强度指标一般小于三轴试验。历时1500h(62d)的等向固结试验表明,虽然孔压可以在4~10h内消散完毕,但垃圾土试样的排水过程却可以持续相当长一段时间,表现出流变性。
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| 关 键 词： | 垃圾土 三轴试验 单剪试验 等向固结试验 抗剪强度 |
| 文章编号： | 1000-0054(2006)09-1538-04 |
| 修稿时间： | 2005年10月31 |
Strength characteristics of municipal solid waste |
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| DANZENG Dunzhu,JIE Yuxin,WEI Yifeng,LI Guangxin.Strength characteristics of municipal solid waste[J].Journal of Tsinghua University(Science and Technology),2006,46(9):1538-1541. |
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| Authors: | DANZENG Dunzhu JIE Yuxin WEI Yifeng LI Guangxin |
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| Abstract: | The engineered treatment research of municipal solid waste (MSW) at a suburban building site was investigated in laboratory tests including sieve analyses, triaxial compression tests, simple shear tests, and isotropic consolidation tests to investigate the strength properties of municipal solid waste. The tests show that the fibrous component of the wastes has a reinforcing effect which can increase the cohesion but has little influence on the friction angle. The shear strengths obtained from the simple shear tests were lower than those from the triaxial compression tests. Isotropic consolidation tests for 1 500 h (62 d) show that the water discharge in the samples could continue for quite a long time despite the pore water pressure being dissipated in 410 h, which affects the rheological characteristic of the solid wastes. |
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| Keywords: | municipal solid waste triaxial compression test shear test isotropic consolidation test shear strength |
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