A special rammer for dynamic compaction replacement treatment of fluid-plastic to soft-plastic clay

Abstract

The invention belongs to the technical field of a rammer for foundation treatment in construction engineering, and specifically relates to a special rammer for dynamic compaction replacement treatment of flow-plastic to soft-plastic clay, including a hook part, an anti-buried hammer extension part and a rammer For the hammer body, the height of the anti-buried hammer extension is more than 2.8 meters. The rammer body includes an upper trapezoidal circular table structure and a lower cylindrical structure. The outer wall of the rammer body is evenly distributed with a number of semicircular ventilation holes. The present invention solves the problem of "buried hammer" in the dynamic compaction replacement of flow-plastic to soft-plastic clay foundations. For the problem that it is impossible to carry out dynamic compaction depth replacement due to hammering, dynamic compaction, an environmentally friendly and low-cost treatment technology, can further expand the scope of application, and has a broad application market and good development prospects.

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...

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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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