Reinforced sack grouting stone-breaking pile with heat transferring tube buried therein and construction method

Abstract

The invention discloses a reinforced sack grouting stone-breaking pile with a heat transferring tube buried therein and a construction method. The reinforced sack grouting stone-breaking pile with the heat transferring tube buried therein is characterized in that the stone-breaking pile is composed of a geotextile sack, longitudinal main reinforcement, stirrups, the heat transferring tube, a prefabricated pile tip, a grouting pipe, cement paste and gravels; the prefabricated pile tip is fixedly connected with the bottom of the main reinforcement, and the geotextile sack is also embedded in the prefabricated pile tip; the heat transferring tube is bound on a reinforcement cage; the geotextile sack is attached to the outer side of the heat transferring tube in the pile length direction; the grouting pipe is placed in the reinforcement cage composed of the longitudinal main reinforcement and the stirrups deep to the prefabricated pile tip. The construction method comprises the steps that 1, the reinforcement cage where the heat transferring tube is well bound is placed in the geotextile sack, and the bottom end of the reinforcement cage and the bottom end of the geotextile sack are fixedly connected with the prefabricated pile tip; 2, after drilling is conducted, the prefabricated pile tip, the reinforcement cage, the heat transferring tube and the geotextile sack are placed in a borehole together; and 3, the cement paste is injected into the inner side of the geotextile sack, and then the gravels are thrown to the inner side of the bulged geotextile sack. According to the reinforced sack grouting stone-breaking pile provided with the heat transferring tube, construction is convenient and fast, and the effects of economy and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of ground source heat pumps in the form of pile foundation buried pipes, and is suitable for building pile foundations and ground source heat pumps; in particular, it relates to a reinforced cloth bag grouting crushed stone pile buried with heat transfer pipes and a construction method. Background technique [0002] Ground source heat pump technology is a new energy utilization technology that uses shallow geothermal resources for cooling and heating. It has the characteristics of cleanness, high efficiency, and energy saving. Among them, the heat transfer tube is an important part of the ground source heat pump technology, and the success of its burial will have an important impact on the heat transfer efficiency. Using the pile foundation as the carrier of buried pipes to realize the energy pile technology that combines the two functions of bearing the upper load and heat transfer has gradually attracted e...

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Problems solved by technology

[0008] Purpose of the invention: Aiming at the deficiencies in the prior art, the present invention provides a reinforced cloth bag grouted gravel pile with buried heat transfer tubes and a construction method to overcome the prestressed piles that are easily damaged in the prefabrication process of the heat transfer tubes, construction process and The heat transfer tube is easy to be damaged during the pile cutting process, the pile body is broken or the diameter is reduced during the construction of the cast-in-place pile, and the heat transfer tube is easily damaged, and the traditional cloth bag grouting pile has relatively low strength and relatively large compression deformation.

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