Method for compounding and dynamically consolidating displacement blocks of high energy level by combining pillar hammer with face hammer and application thereof

Abstract

The invention relates to a method for compounding and dynamically consolidating displacement blocks of a high energy level by combining a pillar hammer with a face hammer, which comprises the following steps: two or more pillar hammer displacement points are symmetrically distributed along a basic large bending moment direction so as to form broken stone blocks with a diameter of 1.5-2.5 m and a depth of 6.0-12.0 m; one or more dynamic consolidation points of the face hammer of the high energy level are distributed on the displacement points or among the displacement points so as to form broken stone blocks with a diameter of 2.5-3.5 m and a depth of 5.0-10.0 m; and a plurality of combined broken stone blocks with different depths form a base compound foundation of a broken stone block group. On the premise of meeting the requirements of the bearing capacity and the sedimentation of the foundation, pillar hammers and face hammers of different combined energy levels are adopted to dynamic consolidation processing according to the load of an upper structure, the requirement on the sedimentation and different thicknesses of soil filling layers and constituents so as to guarantee the quality, shorten the construction period and save the manufacturing cost. The method can be used for the foundation processing of deep soil filling in projects of sea reclamation, valley reclamation, and the like and aims to solve the problems of low bearing capacity of the foundation of deep soil filling, large sedimentation and incapability of meeting the requirements on the bearing capacity, deformation and stability of the foundation of a building base.

Description

technical field [0001] The invention belongs to the field of engineering foundation treatment of water conservancy and hydropower, petroleum and petrochemical, shipbuilding, logistics yard, industrial storage, etc., and relates to a foundation treatment method for deep mountain breaking, block stone reclamation, land filling of mountainous areas, etc., especially For heavy-duty hoisting and deep backfill foundations under heavy loads, the dynamic compaction method is used for projects that plan to use independent foundations or strip foundations. Background technique [0002] In land reclamation in coastal areas and land reclamation in mountainous areas, mountain fragments and rocks are often used for backfilling. When the thickness of backfilling soil is thick or the uniformity is poor, it is difficult to use pile foundation construction, and the construction period is long and the cost is high. , and at the same time it cannot solve the problem of self-weight and consolida...

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Problems solved by technology

[0002] In land reclamation in coastal areas and land reclamation in mountainous areas, mountain fragments and rocks are often used for backfilling. When the thickness of backfilling soil is thick or the uniformity is poor, it is difficult to use pile foundation construction, and the construction period is long and the cost is high. , and at the same time it cannot solve the problem of self-weight and consolidation settlement of the fill, so it is still necessary to carry out compaction pretreatment on the fill

[0003] Due to the difference in the use functions of different parts of the site, if the conventional dynamic compaction method is used to process the fill, it can only meet the requirements of general load and settlement, but it is difficult to meet the requirements of heavy load and settlement sensitive foundation. The present invention is aimed at this A new process method of dynamic compaction foundation treatment proposed by a requirement, the foundation and superstructure construction can be carried out directly after the process of the present invention is used to treat the filled foundation at one time

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