Method for sealing PHC pipe pile orifice through air bag

Abstract

The invention relates to a method for sealing a PHC pipe pile orifice through an air bag. The method comprises the specific steps that the air bag is placed into the pipe pile orifice at first, then, air is injected into the air bag with an inflator so that the air bag is expanded and closely attached to the pipe wall of a pipe pile, thus the pipe pile orifice is sealed, and water and soil are prevented from flowing into the pipe pile orifice; and before a core is filled with concrete, the air bag is deflated and recycled. According to the method for sealing the PHC pipe pile orifice through the air bag, the blocking and sealing performance of the air bag is good, the water and soil preventing effect is good, the follow-up workload for cleaning the orifice is decreased, the orifice cleaning difficulty is lowered, and the engineering cost is saved; the air bag is inflated during sealing and deflated before orifice cleaning, the operation difficulty is low, the speed is high, and the engineering progress is accelerated; and in addition, the air bag is sufficient in apparent availability, low in cost, resistant to corrosion relative to steel plates, sponges and other materials and capable of being recycled and reused and is an ideal green engineering material.

Description

technical field [0001] The invention relates to a method for sealing the hole of a PHC pipe pile with an air bag, in particular to a method for supplementing and perfecting the hole of a PHC pipe pile. Background technique [0002] After the PHC pipe piles are driven, measures such as thin steel plates, sponges, and sand bags are routinely used to temporarily block the openings to prevent water and soil from flowing in. Before the PHC pipe pile concrete core is filled, the debris inside the pile hole must be cleaned. If a large amount of water and soil fall into it, it will increase the workload of hole cleaning and increase the difficulty of hole cleaning. However, the contact between the temporary thin steel plate and the nozzle is not tight enough, and the position of the hole is not fixed, so the effect of blocking water and soil is not ideal; if a sponge is added under the cover plate, the sponge is greatly affected by temperature factors and is easy to rot, which is no...

AI Technical Summary

Problems solved by technology

However, the contact between the temporary thin steel plate and the nozzle is not tight enough, and the position of the hole is not fixed, so the effect of blocking water and soil is not ideal; if a sponge is added under the cover plate, the sponge is greatly affected by temperature factors and is easy to rot, which is not ideal. If the plugging measures of sand bags are adopted, the labor intensity will be high, the woven bags will be easily damaged after aging, and the plugging effect will be poor.

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