Controllable expansion extrusion soil body apparatus for geotechnical engineering and use thereof

Abstract

The invention provides a controllable expansion extrusion earth device used for geotechnical engineering, comprising an upper sleeve component (1); the top end of the upper sleeve component (1) is fixed with an upper cover plate (2); the upper internal part of the upper sleeve component (1) is provided with an upper elastic sealing part (3); the lower part of the upper sleeve component (1) is connected with the upper opening of the top end of an expansion extrusion cylinder (5); the expansion extrusion cylinder (5) is made of the material which is externally expanded, unfolded and folded when fluid with the pressure less than 8MPa is injected into the expansion extrusion cylinder (5); the upper sleeve component (1), the upper cover plate (2) and the upper elastic sealing part (3) are provided with a pulp injection pipe upper pore (6) and at least a transmission component upper pore (7) which are communicated with the upper opening of the expansion extrusion cylinder (5). The invention aims at providing the controllable expansion extrusion earth device and the applications which are used for the geotechnical engineering and can carry out the reinforcing by injecting pulp, replacing and correcting operation for the foundation in complex stratum, improve the effect, increase the bearing capability of single pile and single anchor and improve the bearing capability of the component in the reinforced body or the soil.

Description

technical field [0001] The present invention relates to a controllable type that can be used in the field of civil engineering, can be applied to building grouting correction, foundation underpinning, bottom expansion pile foundation and soil layer expansion anchor rod, etc., and can preset expansion geometry and size. Expansion devices and their uses. Background technique [0002] In engineering technologies such as foundation reinforcement, deviation correction, underpinning, geotechnical anchorage and pile foundation in the field of civil engineering, various grouting techniques need to be applied. However, for loose and weak strata and groundwater conditions with high water head and high permeability, due to The cement-based grout in the formation is easy to lose, and the diffusion path and range of the grout are uncontrollable, so it is difficult to guarantee the quality and effect of grouting. In the construction of building deviation correction and reinforcement, it ...

AI Technical Summary

Problems solved by technology

[0002] In engineering technologies such as foundation reinforcement, deviation correction, underpinning, geotechnical anchorage and pile foundation in the field of civil engineering, various grouting techniques need to be applied. However, for loose and weak strata and groundwater conditions with high water head and high permeability, due to The cement-based grout in the formation is easy to lose, and the diffusion path and range of the grout are uncontrollable, so it is difficult to guarantee the quality and effect of grouting

In the construction of rectification and reinforcement of buildings, it is very important to control the position, shape and size of the grouting consolidation body, but the existing grouting rectification technology has a large blindness, which will affect the effectiveness of the overall reinforcement and rectification of the building

For piles and anchors installed in soft and loose ground, due to the low resistance at the pile end and the frictional resistance of the anchorage section of the anchor, the bearing capacity of the pile or anchor will be low and the deformation will be large

Images