Vibrating and washing pile inverted filter construction method

Abstract

The invention discloses a vibroflotation pile inverted filter construction method which comprises the following steps: selecting geotechnical cloth, cutting the size, preparing to fill gravel materials, wrapping the gravel materials with the geotechnical cloth, rolling the gravel materials into sausage-shaped filling bags, controlling the filling degree of filler to be 60%, locking and fixing two ends of each filling bag by adopting plastic lock catches, and connecting steel wires in series in a segmented manner to form inverted filter pipe bags; and the steel wires at the two ends are hung on the vibroflot, after the steel wires are thrown to the designated position, the hanging steel wires at the two ends are cut off in two times, the inverted filter pipe bag is lifted along with the vibroflot, the inverted filter pipe bag is accurately arranged in a rotary disc placing mode, and the forming quality of the inverted filter layer is ensured. According to the invention, the problems that the traditional inverted filter tube bag is easy to damage and scatter in the conveying process are effectively solved, and the impact force caused by repeated vibration and compaction of a vibroflot is effectively resisted by adopting a segmented sausage-shaped continuous inverted filter tube bag filling method; the forming quality of the inverted filter layer is ensured after rotary disc-placing type precise distribution vibroflotation compaction, so that the inverted filter layer has the characteristics of compact structure, qualified section length, complete inverted filter surface and the like.

Description

technical field [0001] The invention belongs to the technical field of building construction, in particular to the technical field of underground engineering building construction, and in particular relates to a construction method for precisely distributing bags of anti-filter tubes in a "sausage-shaped" suspension of a vibro-pile anti-filter layer. Background technique [0002] The vibratory crushed stone pile replaces the original foundation soil, and the pile body and the original cohesive soil form an artificial composite foundation to work together, so that the crushed stone acts as a reinforcement in the original foundation soil, improving the drainage and pressure reduction channels of the soil, and making the bearing The load spreads evenly around, and significantly increases the width of the foundation, increases the relative density, and reduces the uneven settlement of the foundation while improving the bearing capacity of the foundation and the anti-liquefaction ...

AI Technical Summary

Problems solved by technology

In the traditional filter layer construction process, filament non-woven geotextile is used for wrapping. This material has a large elongation rate, is easy to deform, and has low tear resistance. During the delivery process, it is prone to problems such as damage, leakage, and loose locks. The reverse filter layer structure, the existing filling technology of the reverse filter layer has a low degree of mechanization, such as: bamboo frame packing, rope net pocket packing, gabion net pocket packing, steel skeleton fixed geotextile packing, etc. The existing packing methods are labor-intensive Due to the high strength, the reverse filter tube bag cannot be accurately placed at the designated position, and an effective filter plug section cannot be formed, which makes it difficult to guarantee the construction quality and cannot meet the current engineering reverse filter layer layout requirements.

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