Boring-tamping lime-soil compacting pile construction process

Abstract

The invention refers to a construction technique, which has a good effect for the drilling ram enlarge the gray soil and the stake. The concrete process is that perching the drill, vertical revising, drilling, milling the material, perching the pile driver, empty ram, filling in material, covering the top and moving the pile driver. The technique has the merits that it having small noisy, light vibration, can avoid the damp sinking efficiently, has a strong stake, the base can bear more weight, has the low cost of the project, project can be constructed in the city and has a broader application among the damp and sink loess areas.

Description

technical field [0001] The invention relates to a construction technique of a bored, rammed and expanded lime-soil compaction pile with a good treatment effect on the foundation Background technique [0002] At present, due to the traditional immersed tube or percussion drilling method, the equipment is heavy, the noise is large, and the vibration is large. Its construction method has long been eliminated by urban construction, and its construction technology has the following disadvantages: In the collapsible loess area, the soil quality is very hard, and it is difficult to drill holes when the geological hard layer is encountered, and the pile diameter is also limited. Pile length: soil extrusion drilling is used, limited by equipment capacity or soil layer conditions, the hole depth is limited, and the general pile length can only be within 10 meters. Bearing capacity of the foundation: the hammer used for backfilling is all below 1000 kg, the compaction coefficient of t...

AI Technical Summary

Problems solved by technology

Due to the above-mentioned shortcomings of the traditional method, the use and development of this foundation treatment method in urban areas and collapsible loess areas are greatly limited.