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  • 强夯法的优点

    1. 施工设备,工艺简单,用一台起重机和夯锤即可施工,操作简便,施工管理和质量控制都比较容易。
    2. 适用土质范围广。能加固各类土质的软弱地基,特别是碎石类填土地基。
    3. 加固效果好。夯后一般地基强度可提高1—3倍。压缩性可大幅度改变。根据不同强夯能级加固影响深度可达3—10m,同时可防止砂土的地震液化,消除或强敌大孔隙土的湿陷等级。



  • 强夯法的施工

    1. 施工机具
    1) 履带式吊车。一般采用15t—50t履带式吊车。
    2) 夯锤。夯锤质量可取10—40t,其底面形式宜采用圆型。锤底面积宜按土的性质确定,锤底静接地压力值可取25—40Kpa,对于细颗粒土锤底静压力宜取较小值。锤的底面应对称设置若干个与其顶面贯通的排气孔,孔径可取250—300mm。
    3) 脱钩装置。采用专用的自动脱钩装置,规格以满足起吊夯锤重量为宜。
    4) 推土机。采用70—220型履带式推土机。

  • 强夯法的设计

    强夯法适用于处理碎石土,砂土,低饱和的粉土和粘性土,湿陷性黄土,杂填土和素填土等地基。对高饱和的粉土和粘性土地地基,可采用强夯置换法,即在场地铺天或夯坑内回填块石,碎石或其他粗颗粒材料进行强夯。其主要设计参数包括有效加固深度,单位夯击能,夯击次数,夯击遍数,夯击点布置和处理范围等。

强夯法的优点 强夯法的施工 强夯法的设计
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