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suetung8木蟲 (知名作家)
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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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suetung8: 金幣+10, 基金HEPI+1, ★★★★★最佳答案, 多謝了 2013-04-24 11:43:39
suetung8: 金幣+10, 基金HEPI+1, ★★★★★最佳答案, 多謝了 2013-04-24 11:43:39
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中文摘要： 隨著西部大開發(fā)與我國民航強(qiáng)國戰(zhàn)略的實施，土石混填的高填方工程在基礎(chǔ)設(shè)施建設(shè)中日漸廣泛，其壓實質(zhì)量關(guān)系到地基的強(qiáng)度與穩(wěn)定性，如何采取有效方法檢測其壓實質(zhì)量，已成為土石混填工程的關(guān)鍵問題與國際上公認(rèn)的技術(shù)難題。本項目通過開展土石混合料宏觀剪切波速理論和試驗研究，首次提出采用混合料中間隙土壓實度評價混合料壓實質(zhì)量的新方法。研究工作如下：系統(tǒng)地建立了不同含水率、不同含石量條件下混合料宏觀剪切波速與間隙土剪切波速關(guān)系模型，為混合料間隙土表征壓實度評價體系的建立提供了理論依據(jù)。提出了表征壓實度測試與分析的新理論。建立了混合料宏觀剪切波速與間隙土表征干密度相關(guān)性計算模型，并在此基礎(chǔ)上研究建立了土石混合料表征壓實度的評價體系及評價標(biāo)準(zhǔn)。建立了間隙土剪切波速與干密度相關(guān)模型，揭示了細(xì)粒土中含水量對剪切波速的影響機(jī)理。確定了土石混合料基本壓實狀態(tài)下泊松比分布范圍，并建立了土石混合料泊松比相關(guān)分析模型，為現(xiàn)場應(yīng)用面波測試研究土石混填地基的表征壓實度提供了科學(xué)依據(jù)。本項目提出的土石混填地基表征壓實度測試新技術(shù)可以有效的解決土石混填工程壓實質(zhì)量控制環(huán)節(jié)中的技術(shù)難題，為提高山區(qū)機(jī)場跑道安全與耐久性提供技術(shù)支持。 中文主題詞： 土石混填地基；壓實度測試；剪切波速；石料間隙土；表征壓實度 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. 英文主題詞： Soil-Rock Foundation; Test of Compaction Degree;Shear Wave Velocity; Gap Soil; Apparent Compaction Degree |
3樓2013-04-23 22:11:08
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