Cast-in-situ bored pile sensor auxiliary laying device

Abstract

The utility model discloses an auxiliary sensor laying device for a cast-in-situ bored pile. The device comprises a pile foundation reinforcement cage, perforated section steel, a steel base plate, a steel bar, a limiting steel bar, a soil pressure sensor and a grab handle. The perforated profile steel is welded on a main reinforcement or an annular stirrup of a pile foundation reinforcement cage; after the steel bar penetrates into the inclined hole of the perforated profile steel, the grab handle is mounted at the end part in the pile foundation reinforcement cage, and the steel base plate is welded at the end part outside the pile foundation reinforcement cage; the limiting steel bar penetrates into the perforated profile steel and the steel bar from top to bottom, and the steel bar is fixed to the initial position; and the soil pressure sensor is glued on the steel base plate. The cast-in-situ bored pile sensor auxiliary laying device ensures that a soil pressure sensor is accurately installed at a designated position, solves the problem that a traditional cast-in-situ pile lateral pressure sensor is difficult to be tightly attached to a pile body, and improves measurement accuracy. The device is convenient to operate, low in installation cost and good in economical efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge technology, and in particular relates to a sensor-assisted deployment device for bored piles. Background Technology

[0002] Currently, bored piles are widely used in the construction of highway bridge pile foundations. When the pile foundation site has special topography and a large slope, and it is necessary to monitor the horizontal pressure of the soil on the pile foundation due to special circumstances, the traditional lateral pressure sensor for monitoring the soil on the pile side usually needs to be buried by drilling a hole at a certain distance around the pile and using a steel cage or other means. This method is complicated to operate, has a high installation cost, and the soil pressure sensor is not in close contact with the soil on the pile side, so the test accuracy is not accurate enough. Summary of the Invention

[0003] The purpose of this application is to address the above-mentioned problems by proposing a sensor-assisted deployment device for bored piles.

[0004] The sensor auxiliary deployment device for bored piles includes a pile foundation reinforcement cage, a perforated steel section, a steel pad, a steel rod, a limiting steel bar, an earth pressure sensor, and a handle. The perforated steel section is welded to the main reinforcement or circumferential stirrups of the pile foundation reinforcement cage. The perforated steel section has a straight hole along the length of the reinforcement cage and an oblique hole along the outside and downward of the pile foundation reinforcement cage, with the two holes communicating within the perforated steel section. After the steel rod is inserted into the oblique hole of the perforated steel section, a handle is installed at the end inside the pile foundation reinforcement cage, and a steel pad is welded to the end outside the pile foundation reinforcement cage. The steel rod has a hole along the length of the reinforcement cage near the steel pad, consistent with the straight hole of the perforated steel section. The limiting steel bar is inserted from top to bottom into the perforated steel section and the steel rod, fixing the steel rod in its initial position. The earth pressure sensor is glued to the steel pad.

[0005] The perforated steel section is multiple, and each perforated steel section is arranged on the same straight line along the length of the pile foundation reinforcement cage.

[0006] The lower surface of the oblique hole has a downward-protruding fishbone-like structure.

[0007] The longitudinal length of the handle is greater than the diameter of the oblique hole in the perforated steel section. This prevents the steel bar from sliding completely out of the perforated steel section in case of an accident.

[0008] The lower surface of the steel rod has an upwardly protruding fishbone-like structure. This fishbone-like structure ensures that the steel rod will not retract due to other factors.

[0009] The prominent fishbone-like structure is made of multiple steel nails welded at an angle.

[0010] Use tape or wire to secure the earth pressure sensor to the steel pad to enhance its stability.

[0011] This utility model provides an auxiliary deployment device for borehole pile sensors, ensuring precise installation of earth pressure sensors at designated locations. This solves the problem of traditional lateral pressure sensors for borehole piles being difficult to install close to the pile body, thus improving measurement accuracy. The device is easy to operate, has low installation costs, and is economically viable. Attached Figure Description

[0012] Figure 1 This is a front view of the sensor-assisted deployment device for bored piles in the borehole.

[0013] Figure 2 This is a front view of the sensor-assisted deployment device for bored piles.

[0014] Figure 3 This is a structural diagram of a sensor-assisted deployment device for bored piles.

[0015] Figure 4 This is a left view of the perforated steel section in the sensor-assisted deployment device for bored piles.

[0016] Figure 5 This is a top view of the steel rod in the sensor-assisted deployment device for bored piles.

[0017] Figure 6 This is a schematic diagram of the initial position of the sensor-assisted deployment device for bored piles during installation.

[0018] Figure 7 This is a schematic diagram of the final position of the sensor-assisted deployment device for bored piles after the limiting steel bar is extracted.

[0019] In the diagram: 1-Soil on the side of the pile, 2-Reinforcing cage for the pile foundation, 3-Perforated steel section, 4-Steel pad, 5-Soil pressure sensor, 6-Steel rod, 7-Handle, 8-Limiting steel bar, 9-Pile-soil interface. Detailed Implementation

[0020] Example 1

[0021] The sensor-assisted deployment device for bored piles includes a pile foundation reinforcement cage, perforated steel sections, steel pads, steel bars, limiting reinforcing bars, earth pressure sensors, and handles. The perforated steel sections are welded to the main reinforcement bars of the pile foundation reinforcement cage. The perforated steel sections have straight holes along the length of the reinforcement cage and inclined holes at a 60-degree angle outwards and downwards along the pile foundation reinforcement cage; the two holes are connected within the perforated steel sections. Multiple perforated steel sections are arranged in a straight line along the length of the pile foundation reinforcement cage. After the steel bar is inserted into the inclined hole of the perforated steel section, a handle is installed at the end inside the pile foundation reinforcement cage, and a steel pad is welded to the end outside the pile foundation reinforcement cage. The longitudinal length of the handle is greater than the diameter of the inclined hole in the perforated steel section. This prevents the steel bar from completely slipping out of the perforated steel section in case of an accident. The steel rod has a hole drilled along the length of the pile foundation reinforcement cage near the steel pad, consistent with the straight hole in the perforated steel section; the limiting steel bar passes through the perforated steel section and the steel rod from top to bottom, fixing the steel rod in its initial position; the earth pressure sensor is glued to the steel pad with epoxy resin. Tape is used to bind the earth pressure sensor to the steel pad to enhance the fixing effect.

[0022] Multiple steel nails are welded diagonally downwards to the lower surface of the oblique hole. Multiple steel nails are welded diagonally upwards to the lower surface of the steel rod, forming a protruding fishbone-like structure. This fishbone-like structure ensures that the steel rod will not retract due to other factors.

[0023] In use, the pile foundation reinforcement cage is placed into the borehole. After it is in place, the limiting steel bar is pulled out, and the steel rod, under its own weight, will deliver the earth pressure sensor to the pile-soil interface. In actual construction, the distance between the soil on the pile side and the pile foundation reinforcement cage after borehole drilling may not be consistent, resulting in a localized concave curved surface on the soil side of the borehole. This invention ensures that the sensor is installed at the pile-soil interface. (See...) Figure 7 Both the upper and lower sensors in the diagram can be installed in the desired positions.

Claims

1. A sensor-assisted deployment device for bored piles, characterized in that, The device includes a pile foundation reinforcement cage, a perforated steel section, a steel pad, a steel rod, a limiting reinforcing bar, an earth pressure sensor, and a handle. The perforated steel section is welded to the main reinforcement or circumferential stirrups of the pile foundation reinforcement cage. The perforated steel section has a straight hole running through it along the length of the reinforcement cage and an oblique hole running through it obliquely outward and downward along the pile foundation reinforcement cage, with the two holes communicating within the perforated steel section. After the steel rod passes through the oblique hole of the perforated steel section, a handle is installed at the end inside the pile foundation reinforcement cage, and a steel pad is welded to the end outside the pile foundation reinforcement cage. The steel rod has a hole running through it along the length of the reinforcement cage near the steel pad, consistent with the straight hole of the perforated steel section. The limiting reinforcing bar passes through the perforated steel section and the steel rod from top to bottom, fixing the steel rod in its initial position. The earth pressure sensor is glued to the steel pad.

2. The sensor-assisted deployment device for bored piles according to claim 1, characterized in that, The perforated steel section is multiple, and each perforated steel section is arranged on the same straight line along the length of the pile foundation reinforcement cage.

3. The sensor-assisted deployment device for bored piles according to claim 1, characterized in that, The lower surface of the oblique hole has a downward-protruding fishbone-like structure; the lower surface of the steel rod has an upward-protruding fishbone-like structure.

4. The sensor-assisted deployment device for bored piles according to claim 3, characterized in that, The prominent fishbone-like structure is made of multiple steel nails welded at an angle.

5. The sensor-assisted deployment device for bored piles according to claim 1, characterized in that, The longitudinal length of the handle is greater than the diameter of the oblique hole in the perforated steel profile.

6. The sensor-assisted deployment device for bored piles according to claim 1, characterized in that, Use tape or wire to secure the earth pressure sensor to the steel pad.

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