Pile foundation pouring system for building

Abstract

The invention belongs to the related field of pile foundations, and relates to a pile foundation pouring system for a building. The system comprises a steel casing wall, four detachable bolt holes capable of being connected through bolts and nuts are formed in the inner wall of the steel casing wall, a lifting groove is fixedly formed in each bolt hole, and a lifting sliding plate is arranged in each lifting groove in an up-down sliding manner. A size adapting device is arranged on each lifting sliding plate. The system is detachably mounted on a steel casing, is placed into a drill hole together with the steel casing, and is used for assisting in placing of a reinforcement cage, ensuring that the reinforcement cage and a steel casing are coaxial, protecting the reinforcement cage from floating due to buoyancy in the concrete injection process, and hooping the lower layer of the reinforcement cage by utilizing the floating buoyancy, therefore, the structure of the reinforcement cage is prevented from being damaged by pressure, the working efficiency during pile foundation drilling is improved, the reinforcement cage is protected, and the stability of a pile foundation is improved.

Description

technical field [0001] The invention belongs to the related field of pile foundations, in particular to a pile foundation pouring system for construction. Background technique [0002] As we all know, in the foundation construction, a large number of pile foundation projects will be involved. Before the pile foundation concrete is injected, in order to protect the steel cage, a steel casing will be put into the dug pile hole first, and then a crane will be used to put it into the steel casing coaxial with the steel casing. The reinforcement cage is difficult to put in and takes a long time, and then the concrete is injected. With the injection of concrete, the reinforcement cage will be floated up by the buoyancy force. In order to ensure that the reinforcement cage will not move too much and the stability of the pile foundation, it is necessary to reduce the reinforcement The more serious the floating of the cage, the more serious the floating of the steel cage, the more se...

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Problems solved by technology

[0002] As we all know, in the foundation construction, a large number of pile foundation projects will be involved. Before the pile foundation concrete is injected, in order to protect the steel cage, a steel casing will be put into the dug pile hole first, and then a crane will be used to put it into the steel casing coaxial with the steel casing. The reinforcement cage is difficult to put in and takes a long time, and then the concrete is injected. With the injection of concrete, the reinforcement cage will be floated up by the buoyancy force. In order to ensure that the reinforcement cage will not move too much and the stability of the pile foundation, it is necessary to reduce the reinforcement The more serious the floating of the cage, the more serious the floating of the steel cage, the more serious the adverse effect on the quality of the pile. At the same time, with the injection of the lower layer of concrete, the pressure on the lower end of the steel cage is gradually increased, and the steel cage is easy to bend and deform under pressure, reducing its own bearing capacity. force, which reduces the stability of the pile foundation

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