輕型空箱圍堤對(duì)鄰近橋梁樁基影響分析

輕型空箱圍堤對(duì)鄰近橋梁樁基影響分析

摘要: 以嘉興港海鹽港區(qū)圍堤與杭州灣跨海大橋的穿越段為例, 采用基于Mindlin 應(yīng)力解的樁伐基礎(chǔ)簡(jiǎn)化分析和三維彈性數(shù)值模擬兩種方法, 探討了嘉興港海鹽港區(qū)圍堤對(duì)杭州灣跨海大橋樁基產(chǎn)生的負(fù)摩阻力和側(cè)向推力. 通過分析比較, 簡(jiǎn)化分析方法與彈性三維數(shù)值模擬結(jié)果吻合較好, 說明應(yīng)用簡(jiǎn)化分析方法得出的結(jié)果也可作為樁承式圍堤結(jié)構(gòu)基
礎(chǔ)設(shè)計(jì)的參考依據(jù).

關(guān)鍵詞: 輕型空箱圍堤; 圍堤樁; 負(fù)摩阻力; 側(cè)向推力

Abstract :Using a simplified method based on Mindlinstress solutions as well as 3-dimensional numerical analyses with elastic constitutive models , the negative skinfrictionandlateral push onthe piles for the Great Trans- oceanic Hangzhou Bay Bridge due to intersecting Jiaxing Port embankment are evaluated inthis paper . It indicates that the simplified method based on Mindlin stress solutions can be roughly adoptedto assess the negative skinfrictionandlateral push on piles due to adjacent pile foundations as it compares well with numerical analyses .