Novel bottom grouting device for deep strip-shaped cast-in-place pile

Abstract

The utility model discloses a novel bottom mud jacking device for a deep strip-shaped cast-in-place pile. The novel bottom mud jacking device comprises a mud jacking assembly. The mud jacking assembly comprises two sets of sounding pipes, rubber pipes and bottom connecting pipes. The two sets of sounding pipes are symmetrically arranged and connected with the bottom connecting pipe through rubber pipes, the whole connection is of a U-shaped right-angle structure, and the rubber pipes and the sounding pipes are connected in a sealed mode. Construction safety, construction convenience and cost quality control are guaranteed, and the foundation is used for enhancing and improving the bearing capacity and resisting settlement and deformation.

Description

Technical Field

[0001] The utility model relates to the field of municipal bridges. More specifically, the utility model relates to a novel deep strip cast-in-place pile bottom grouting device. Background Art

[0002] For the strip cast-in-place pile project mainly composed of clay layer and sandy clay stratum in the geological structure. Its geological layer structure is loose, with large porosity, strong water permeability, low strength, and has strong compressibility, expansibility, disintegration and plasticity, and is prone to engineering geological problems and geological disasters. Therefore, the strip cast-in-place piles are designed to be relatively long, 42.2 - 60 meters. For problems such as unstable foundation, insufficient bearing capacity, and soft soil quality, to ensure the safety and stability of buildings or structures. Content of the Utility Model

[0003] The purpose of the utility model is to provide a novel deep strip cast-in-place pile bottom grouting device, which ensures construction safety, convenience and cost-quality control, and is used to enhance and improve the foundation bearing capacity and resist settlement and deformation.

[0004] The technical solution adopted by the utility model to solve this technical problem is: a novel deep strip cast-in-place pile bottom grouting device, including a grouting assembly; the grouting assembly includes two groups of acoustic logging tubes, rubber hoses and a bottom connecting pipe;

[0005] The two groups of acoustic logging tubes are symmetrically arranged and connected to the bottom connecting pipe through rubber hoses, and the overall connection is in a U-shaped right-angle structure, and the rubber hoses and the acoustic logging tubes are hermetically connected.

[0006] As a further scheme of the utility model: the number of the grouting assemblies is multiple and they are arranged at intervals along the length direction of the steel reinforcement cage.

[0007] As a further scheme of the utility model: the acoustic logging tubes and the steel bars are fixed by U-shaped clips.

[0008] As a further scheme of the utility model: it further includes a detection tube, and the detection tube is connected to the upper end of the acoustic logging tube.

[0009] As a further scheme of the utility model: the top surface of the detection tube is higher than the designed elevation of the pile top, and the top opening of the detection tube is sealed with rubber.

[0010] As a further scheme of the utility model: both the acoustic logging tubes and the bottom connecting pipe are steel pipes of the same material.

[0011] As a further scheme of the utility model: it further includes spiral steel bars, which are wound around the horizontal bottom of the U-shaped right-angle structure of the grouting assembly.

[0012] The utility model has at least the following beneficial effects:

[0013] Applicability: By injecting water and pressurizing through this device to remove the remaining residues at the bottom of the tank, the quality of the project is greatly guaranteed, the construction efficiency and safety are improved, and it has broad market prospect value.

[0014] Durability: The removal effect of the remaining residues at the bottom of the tank is good, which is applicable to the situation of poor geology, large depth and complex surrounding environment, ensuring the quality stability, ensuring the pile tip bearing capacity, and improving the durability of the pile foundation.

[0015] Other advantages, objectives and features of the present utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of the bottom grouting device of the novel deep strip cast-in-place pile of the present utility model.

[0017] Among them, 1 - sonic logging tube, 2 - rubber tube, 3 - bottom connecting tube, 4 - inspection tube, 5 - spiral steel bar. Detailed Embodiment

[0018] The present utility model will be described in detail and completely below with reference to the drawings. Those of ordinary skill in the art will be able to implement the present utility model based on these descriptions. Before describing the present utility model in conjunction with the drawings, it should be particularly noted that: the technical solutions and technical features provided in each part including the following description of the present utility model can be combined with each other without conflict.

[0019] In addition, the embodiments of the present utility model involved in the following description are usually only part of the embodiments of the present utility model, rather than all embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] The following will further describe the present utility model in detail with reference to the drawings and embodiments, and its specific implementation process is as follows:

[0021] As Figure 1 shown, the present utility model provides a novel deep strip cast-in-place pile bottom grouting device, including a grouting assembly; the grouting assembly includes two sonic logging tubes 1 with a diameter of Φ50.8mm, a rubber tube 2 and a bottom connecting tube 3;

[0022] Two groups of sonic logging tubes 1 are symmetrically arranged and connected to the bottom connecting pipe 3 through rubber tubes 2, and the overall connection forms a U-shaped right-angle structure. In this embodiment, the sonic logging tube 1 is an L-shaped steel pipe, and the rubber tube 2 is hermetically connected to the sonic logging tube 1 to ensure full enclosure. With a right-angle U-shaped design, the rubber tube 2 is lengthened, the grouting range is larger, and it is more conducive to the reinforcement of the pile bottom area.

[0023] During construction, ensure that no impurities fall into the steel pipe. After the ultrasonic detection test, water is injected and pressurized into the sonic logging tube 1 to break through its rubber tube 2 to remove the bottom residue, and then grouting is carried out, which greatly ensures the quality and bearing capacity of the pile.

[0024] This technical solution can also include the following technical details to better achieve the technical effect: The number of the grouting components is multiple and they are arranged at intervals along the length direction of the steel reinforcement cage.

[0025] This technical solution can also include the following technical details to better achieve the technical effect: The sonic logging tube 1 and the steel bars are fixed by U-shaped clips.

[0026] This technical solution can also include the following technical details to better achieve the technical effect: It also includes a detection tube 4, and the detection tube 4 is connected to the upper end of the sonic logging tube 1.

[0027] This technical solution can also include the following technical details to better achieve the technical effect: The top surface of the detection tube 4 is 100 cm higher than the designed elevation of the pile top, the tube is filled with water, and the top opening of the detection tube 4 is sealed with a rubber sheet.

[0028] This technical solution can also include the following technical details to better achieve the technical effect: The sonic logging tube 1 and the bottom connecting pipe 3 are both steel pipes of the same material.

[0029] This technical solution can also include the following technical details to better achieve the technical effect: It also includes spiral steel bars 5, which are wound around the horizontal bottom of the U-shaped right-angle structure of the grouting component. The outside of the rubber tube 2 is reinforced with spiral steel bars 5 to ensure that during the lowering and pouring of the steel reinforcement cage, the rubber tube 2 is protected from damage and the firmness and non-deformation of the rubber tube 2 are ensured.

[0030] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the embodiments shown and described here.

Claims

1. A novel bottom grouting device for deep strip cast-in-place piles, characterized in that It includes a grouting component; the grouting component includes two groups of sonic logging tubes, rubber tubes and bottom connecting tubes; The two groups of sonic logging tubes are symmetrically arranged and connected to the bottom connecting tube through rubber tubes, and the overall connection forms a U-shaped right-angle structure, and the rubber tubes and the sonic logging tubes are sealed and connected.

2. The novel deep strip cast-in-place pile bottom grouting device according to claim 1, characterized in that, The number of the grouting components is multiple and they are arranged at intervals along the length direction of the steel cage.

3. The novel deep strip cast-in-place pile bottom grouting device according to claim 1 or 2, characterized in that, The sonic logging tubes and the steel bars are fixed by U-shaped clamps.

4. The novel deep strip cast-in-place pile bottom grouting device according to claim 1, characterized in that, It further includes a detection tube, and the detection tube is connected to the upper end of the sonic logging tube.

5. The novel deep strip cast-in-place pile bottom grouting device according to claim 4, characterized in that, The top surface of the detection tube is higher than the designed elevation of the pile top, and the top opening of the detection tube is sealed with rubber.

6. The novel deep strip cast-in-place pile bottom grouting device according to claim 1, characterized in that, Both the sonic logging tubes and the bottom connecting tubes are steel tubes of the same material.

7. The novel deep strip cast-in-place pile bottom grouting device according to claim 1, characterized in that, It further includes spiral steel bars, which are wound around the horizontal bottom of the U-shaped right-angle structure of the grouting component.

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