Soft soil foundation reinforcing method and composite pile foundation construction method: Fid-Bau Portal

Soft soil foundation reinforcing method and composite pile foundation construction method

ZHOU ZHAODI

The invention discloses a soft soil foundation reinforcing method and a composite pile foundation construction method. Particles and/or an expanding agent are added to the desired depth of a weak bearing bed so that an integrated gapless reinforced region can be formed. According to the soft soil foundation reinforcing method provided by the invention, by filling the filling material containing the particles and/or the expanding agent in the desired depth of the weak bearing bed to form the integrated gapless reinforced region, the overall bearing force of a soft soil foundation is improved. The invention further discloses the method for conducting composite pile foundation construction on the integrated gapless reinforced region. The soft soil foundation reinforcing method can be used forsolidification of shallow soil close to the ground and also used for solidification of deep soil underground. When the soft soil foundation reinforcing method is used for a non-pile foundation, the bearing force of the foundation can be improved, and the applicability of the soft soil foundation is improved; and when the soft soil foundation reinforcing method is used for a pile foundation, the length of a pile can be shortened, the deep pile driving difficulty is lowered, the foundation engineering cost is reduced, and the soft soil foundation reinforcing method is easy to apply widely.

本发明公开了一种软土地基强化方法及其复合桩基施工方法，在弱承载层预定深度填充混合有颗粒物和/或膨胀剂以形成整体式无间隙加固区。本发明提供的软土地基强化方法通过在弱承载层预定深度填充混合有颗粒物和/或膨胀剂以形成整体式无间隙加固区，提高软土地基的整体承载力。本发明还公开了在整体式无间隙加固区上进行复合桩基的施工方法。软土地基强化方法既能用于接近地面的浅层土体固化，又能用于地面以下较深处土体固化；既能用于弱承载层中间的定区土体固化，又能用于自然持力层上方土体固化。用于非桩基础，可以提高基础承载力，提高软土地基的适用性；用于桩基础，可以缩短桩体长度及降低打深桩难度，降低基础工程成本，易于广泛应用。

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