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suetung8木虫 (知名作家)
老光棍一个
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[求助]
基金摘要求助60879021
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60879021 [ Last edited by suetung8 on 2013-1-23 at 22:07 ] |
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wxiaoqiang
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suetung8: 金币+10, 基金HEPI+1, ★★★★★最佳答案, 多谢了 2013-04-24 11:43:39
suetung8: 金币+10, 基金HEPI+1, ★★★★★最佳答案, 多谢了 2013-04-24 11:43:39
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中文摘要： 随着西部大开发与我国民航强国战略的实施，土石混填的高填方工程在基础设施建设中日渐广泛，其压实质量关系到地基的强度与稳定性，如何采取有效方法检测其压实质量，已成为土石混填工程的关键问题与国际上公认的技术难题。本项目通过开展土石混合料宏观剪切波速理论和试验研究，首次提出采用混合料中间隙土压实度评价混合料压实质量的新方法。研究工作如下：系统地建立了不同含水率、不同含石量条件下混合料宏观剪切波速与间隙土剪切波速关系模型，为混合料间隙土表征压实度评价体系的建立提供了理论依据。提出了表征压实度测试与分析的新理论。建立了混合料宏观剪切波速与间隙土表征干密度相关性计算模型，并在此基础上研究建立了土石混合料表征压实度的评价体系及评价标准。建立了间隙土剪切波速与干密度相关模型，揭示了细粒土中含水量对剪切波速的影响机理。确定了土石混合料基本压实状态下泊松比分布范围，并建立了土石混合料泊松比相关分析模型，为现场应用面波测试研究土石混填地基的表征压实度提供了科学依据。本项目提出的土石混填地基表征压实度测试新技术可以有效的解决土石混填工程压实质量控制环节中的技术难题，为提高山区机场跑道安全与耐久性提供技术支持。 中文主题词： 土石混填地基；压实度测试；剪切波速；石料间隙土；表征压实度 英文摘要: Along with the development of the west regions and the application of powerful country strategic with strong civil aviation, the compaction quality became the key factor of holding foundation intensity and stability in high filled engineering with soil and rock mixture in construction of infrastructural facilities. How to test the foundation compaction quality effectively had become a international technical problem in soil-rock filled engineering. The theoretical analysis and experimental research on macro shear wave velocity of soil-rock mixture were done. New method of evaluating compaction quality of mixture with compaction degree of gap soil in mixture was proposed for the first time in compaction test of soil-rock foundation. The research works were as follows. The model of correlation between macro shear wave velocity of soil-rock mixture and shear wave velocity of gap soil with different water content and different rock content was built systematically. The theoretical evidence for the establishment of evaluation system of apparent gap soil compaction degree was provided. The new theory of test and analysis of the apparent compaction degree was proposed. The computing model of correlation between macro shear wave velocity of mixture and apparent dry density of gap soil was built. Based on which, the evaluation system and the evaluation criterion of apparent compaction degree of mixture was established. The model of correlation between shear wave velocity of gap soil and dry density of soil was built. The rule and mechanism of water content effects on shear wave velocity was revealed. The distribution of poisson's ratio in basic compacted soil-rock mixture was confirmed. The correlation analyzed model of poisson's ratio in mixture was built. The scientific proof for studying apparent compaction degree of soil-rock mixture with site surface wave test was provided. The technical problems in compacted quality control of soil-rock engineering can be solved effectively by the new testing technology of apparent compaction degree of soil-rock foundation. The technical support for safety and durability of airfield runway in mountain aera was provided. 英文主题词： Soil-Rock Foundation; Test of Compaction Degree;Shear Wave Velocity; Gap Soil; Apparent Compaction Degree |
3楼2013-04-23 22:11:08
suetung8
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2楼2013-01-28 09:53:18
