Special rammer for dynamic compaction replacement treatment of flow plastic-soft plastic clay

Abstract

The invention belongs to the technical field of rammers for foundation treatment in constructional engineering, and particularly relates to a special rammer for dynamic compaction replacement treatment of flow plastic-soft plastic clay. The special rammer comprises a hook device part, an anti-burying hammer lengthening body part and a rammer body part, wherein the height of the anti-burying hammerlengthening body part is 2.8 m or above; the rammer body part comprises an upper trapezoidal circular truncated cone structure and a lower cylindrical structure; and a plurality of semicircular ventholes are uniformly distributed in the outer wall of the rammer body part. According to the special rammer, the problem of hammer burying in the dynamic compaction replacement of the flow plastic-softplastic clay foundation is solved, the rammer can be used for solving the problem that dynamic compaction deep replacement cannot be carried out due to hammer burying in the dynamic compaction replacement treatment of the flow plastic-soft plastic clay, the application range of the dynamic compaction which is an environment-friendly and low-cost treatment technology can be further expanded, and the application market and the development prospect are wide.

Description

technical field [0001] The invention belongs to the technical field of a rammer for foundation treatment in construction engineering, in particular to a special rammer for dynamic ram replacement treatment of flow-plastic to soft-plastic clay. Background technique [0002] The dynamic compaction replacement method is a kind of foundation treatment technology in the dynamic compaction method. It refers to repeatedly raising the rammer to a high place, causing it to fall freely to form a ramming pit, and continuously backfilling the ramming pit with crushed stones, steel slag, construction waste and Other hard and coarse-grained materials with high strength and good water permeability form a dense pier in the weak foundation to improve the bearing capacity of the foundation and also have a drainage consolidation channel. [0003] Most of the existing rammer structures are "cylindrical rammers" with the same diameter in the middle and up and down, or "drum rammers" with small m...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the displacement cannot reach the designed replacement depth due to the phenomenon of “buried hammer” in the dynamic compaction replacement of fluid-plastic to soft-plastic clay foundations. In the plastic clay foundation, due to the large lateral friction force due to the soil quality, the problem of "holding the hammer" and reducing the energy of displacement ramming, a special ramming hammer for dynamic compaction replacement treatment of fluid-plastic to soft-plastic clay is proposed

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