軟土地質(zhì)條件下抗浮錨桿(索)設(shè)計(jì)的探討
朱智鋒
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（CCDI悉地國際，上海 200235）[摘要]通常因基礎(chǔ)(地下室)底板下存在軟弱土層，導(dǎo)致抗浮錨桿(索)存在較長的自由長度；現(xiàn)對其受力模型進(jìn)行分析，根據(jù)彈性受力的特點(diǎn)，其截面面積均較小，軸力與變形較明顯；錨桿(索)抗浮力與桿體的伸長成正比，與自由長度成反比；文章主要通過對錨桿抗浮受力特點(diǎn)進(jìn)行簡述,揭示錨桿抗浮力與變形的關(guān)系,提出此類建筑抗浮錨桿設(shè)計(jì)時(shí)應(yīng)注意事項(xiàng),并提出相應(yīng)的設(shè)計(jì)處理方式,避免由于水浮力引起的地下建筑物的破壞;[關(guān)鍵詞]軟弱土層;地下抗浮;錨桿(索);變形破壞;預(yù)應(yīng)力中圖分類號(hào)：TU47 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)S1-0906-04Discussion on the design of anti-float anchor (cable) in soft soil geological conditionZhu Zhifeng（CCDI GROUP,Shanghai 200235,China）Abstract: Usually because of Foundation (basement) soft soil exists under the bottom plate, resulting in anti-floating anchor (cable) the existence of free length; the force analysis model, according to the characteristics of elastic stress, The section area is smaller, the axial force and the deformation is obvious； bolt (cable) of buoyancy and the rod body is proportional to the elongation, and inversely proportional to the free length; based on the anchor rod anti-floating force briefly features, and reveal the relationship between the anchor force and deformation, this kind of building anti-floating anchor design matters needing attention, and puts forward the design relevant processing mode, avoid because of underground structures caused by the destruction of the buoyancy of water;Keywords: soft soil; underground anti-floating; bolt (cable ); deformation and failure; prestressing force
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