United reinforcement technique on the failure of reinforced earth retaining walls
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摘要: 為了研究加筋土擋土墻的破壞機理和加固技術,以某立交橋擋土墻加固工程為例,首先分析了加筋土擋土墻的失穩原因,采用了噴射混凝土、預應力錨桿、注漿聯合加固方案,然后對施工中的主要技術難題進行研究并提出了解決方案,最后用國際流行的軟件FLAD2D進行數值模擬.加筋土擋土墻加固后預應力穩定,墻面無變形,表明聯合加固方案是可行的.Abstract: In order to study the failure mechanism and reinforcement technique of reinforced earth retaining walls, the reinforcement project of a crossroad was taken as an example. The failure mechanism was analyzed firstly. A united measure of shotcrete lining on the surface, pre-stressed anchor and injection was applied. Main problems in construction were discussed and solved. Lastly, the reinforcement effect was simulated with FLAC2D. After the reinforcement, stable stress and little deformation indicate the united measure is effective.
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Key words:
- reinforced earth retaining wall /
- united reinforcement /
- anchorage /
- injection
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