Plate plug method capable of realizing vibratory compaction

Abstract

The invention discloses a plate plug method capable of realizing vibratory compaction. The plate plug method comprises the following steps of: a, staking out in survey; b, reconstructing the tube wall structure of a pile tube; c, penetrating a water discharge plate through the tube and arranging a shoe; d, plugging the pile tube downwardly to a design depth; e, pulling the pile tube upwardly and cutting the water discharge plate; f, cleaning and refilling a pile hole of the water discharge plate; and g, moving to a next position. According to the plate plug method, vibratory compaction of a fine sand and silty-fine sand layer can be realized while a plate plug operation process is finished by reconstructing the tube wall structure of the pile tube and rationally arranging the construction parameters such as diameter of the pile tube, frequency of a vibrator, vibration excitation force and vibration retention time based on a crawler type double-tube vibration plate plug machine, so that the compaction degree is greatly improved, and the anti-liquefaction capacity is enhanced; and the method has the obvious advantages of convenience in construction, short working period, low manufacturing cost and the like.

Description

technical field [0001] The invention relates to the technical field of foundation treatment, in particular to a new technology that can vibrate and compact medium-fine sand and silt-fine sand, improve its anti-liquefaction ability, and simultaneously complete the inserting plate operation, which is suitable for water conservancy and water transportation projects such as large-area sea reclamation and land reclamation ground treatment technology. Background technique [0002] After large-scale land reclamation is completed by dredging and filling sand to form a land area, medium-coarse sand cushions are often filled, plastic drainage boards are inserted, and drainage consolidation methods are used to reinforce the original soft soil. After unloading, combined with dynamic compaction, vibration Dynamic compaction and reinforcement of blown packing by means of compaction or vibratory displacement to improve the liquefaction resistance of sandy soil. However, in the saturated s...

AI Technical Summary

Problems solved by technology

However, in the saturated sandy soil under the condition of high groundwater level, the dynamic compaction method has a large loss of compaction energy, and the treatment effect is not good, especially when the sand layer is thick.

However, the traditional vibrating compaction method is not suitable for medium-fine sand and silt-fine sand foundations with a mud content exceeding 10%. If the vibrating replacement method is used for reinforcement, a large amount of filler is required, and it is difficult to effectively solve the problem of uneven settlement on the site

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