CN110670642A

CN110670642A - Grid type enlarged footing tool anchor

Info

Publication number: CN110670642A
Application number: CN201910886685.7A
Authority: CN
Inventors: 徐畅宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-01-10

Abstract

The invention discloses a grid type enlarged footing tool anchor, which comprises a frame, wherein a jack, a vertical sliding groove, a horizontal sliding groove and a grid enlarged head assembly are arranged in the frame, the grid enlarged head assembly comprises a plurality of grid strips, a soft cable and a pull rod which are arranged in parallel, a bearing bracket is arranged below the grid strips, the bearing bracket is fixed on the pull rod and connected with the soft cable, and the jack drives the pull rod to pull the bearing bracket to enable the grid strips to move between the horizontal sliding groove and the vertical sliding groove. Through the mode, the grid type enlarged footing tool anchor is used for counterforce devices such as engineering static load tests and the like, after the tool anchor is driven into the soil, the grid bars are unfolded from the vertical direction to the horizontal direction through the action of the jack, a large-area bearing plate is formed, large pulling resistance counterforce is provided, the current static load test pile load counterforce method is replaced, the tool anchor is suitable for various engineering environments, the tool anchor is recycled and reused, a large amount of load transportation and hoisting are reduced, the installation difficulty is reduced, the construction safety is improved, the field working time is saved, and the cost is saved.

Description

Grid type enlarged footing tool anchor

Technical Field

The invention relates to the field of buildings, in particular to a grid type enlarged footing tool anchor.

Background

When the vertical ultimate bearing capacity of a single pile is tested by a static load test, the bearing capacity of the existing pile foundation is found to be more surplus, and a large amount of available resources are invisibly wasted; the bearing capacity of some pile foundations can not meet the design requirement, and may be caused by the aspects of design or construction quality and the like. The foundation pile static load test must be provided the counter-force by reaction device, the reaction device among the foundation pile static load test process has anchor pile reaction device, ballast platform reaction device, anchor pile ballast combination reaction device, earth anchor reaction device etc. wherein anchor pile reaction device uses comparatively extensively, anchor pile reaction beam device is exactly that several anchor piles of geometric symmetry around the experimental pile are connected with the reaction frame with the anchor bar, rely on the jack of pile bolck with the reaction frame jack-up, provide the counter-force by the anchor pile who is connected. The existing tool anchor of the static load test device is generally disposable, can not be recycled, and has complex installation mode and high test cost.

Disclosure of Invention

The invention mainly solves the technical problem of providing a grid type enlarged footing tool anchor which is used for counterforce devices such as engineering static load tests and the like, can provide larger pulling-resistant counterforce, can replace the current static load test loading counterforce method, is suitable for various complex engineering environments, can be recycled and reused, reduces transportation and hoisting of a large amount of loads, reduces installation difficulty, improves construction safety, saves field working time and saves cost.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a grid formula enlarged footing instrument anchor, includes the frame, install the jack in the frame, the lower extreme of frame is provided with vertical spout perpendicularly, vertical spout is inside to have hollow structure, be connected with the level with hollow structure intercommunication on the vertical spout to the spout, hollow structure internalization is equipped with grid enlarged footing subassembly, grid enlarged footing subassembly includes a plurality of parallel arrangement's grid strip, connect through soft cable between the grid to install the pull rod on the soft cable middle part, grid strip below is provided with the support bracket, the both ends of support bracket are fixed on the pull rod to be connected with soft cable, the jack drives the pull rod pulling support bracket and makes the grid strip move between level to spout and vertical spout.

In a preferred embodiment of the present invention, the connecting portion of the horizontal sliding groove and the vertical sliding groove is in circular arc transition connection.

In a preferred embodiment of the present invention, the number of the horizontal sliding grooves and the grid expanding head assemblies is one to a plurality.

In a preferred embodiment of the present invention, the number of the horizontal sliding grooves and the grid expanding head assemblies is plural, and the horizontal sliding grooves are connected to the middle and the upper ends of the vertical sliding grooves.

In a preferred embodiment of the invention, the cross-section of the support bracket is cross-shaped.

In a preferred embodiment of the invention, the cross-section of the support bracket is rich, tau, Π, psi, i, x, swastika or tian.

The invention has the beneficial effects that: the grid type enlarged footing tool anchor is used for counter-force devices such as engineering static load tests and the like, can provide larger pulling-resistant counter-force, can replace the current static load test pile-loading counter-force method, is suitable for various complex engineering environments, can be recycled and reused, reduces the transportation and hoisting of a large amount of loads, reduces the installation difficulty, improves the construction safety, saves the field working time and saves the cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural view of a preferred embodiment of a grid-type enlarged head tool anchor according to the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1;

FIG. 4 is a schematic view of a portion of the structure of FIG. 1;

FIG. 5 is a schematic view of a portion of the structure of FIG. 1;

FIG. 6 is a schematic view of a portion of the structure of FIG. 1;

the parts in the drawings are numbered as follows: 1. the device comprises a frame, 2, a jack, 3, a vertical sliding groove 31, a hollow structure, 4, a horizontal sliding groove, 5, a grid expansion head assembly, 51, grid strips, 52, a soft rope, 53, a pull rod, 6, a support bracket, 7 and a second jack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a grid type enlarged footing tool anchor comprises a frame 1, a jack 2 is installed in the frame 1, a vertical sliding groove 3 is vertically arranged at the lower end of the frame 1, a hollow structure 31 is arranged in the vertical sliding groove 3, the vertical sliding groove 3 is connected with a horizontal sliding groove 4 communicated with the hollow structure 31, a grid enlarged footing assembly 5 is movably arranged in the hollow structure 31, the grid enlarged footing assembly 5 comprises a plurality of grid strips 51 arranged in parallel, the grid strips 51 are connected through a soft cable 52, a pull rod 53 is installed in the middle of the soft cable 52, a bearing bracket 6 is correspondingly installed below the grid strips 51, two ends of the bearing bracket 6 are fixed on the pull rod 53 and connected with the soft cable 52, and the jack 2 drives the pull rod 53 to pull the bearing bracket 6 so that the grid strips 51 move between the horizontal sliding groove 4 and the vertical sliding groove 3.

In addition, the connecting part of the horizontal sliding chute 4 and the vertical sliding chute 3 is in circular arc transition connection.

In addition, the number of the horizontal sliding grooves 4 and the grid expanding head assemblies 5 is 2, and the horizontal sliding grooves 4 are connected to the middle and the upper ends of the vertical sliding grooves 3. The grid expansion head assembly 5 can increase the stress area in the soil layer and bear counter force.

The horizontal chutes 4 and the grille expansion head assemblies 5 can be used in an appropriate number according to the needs, and are not limited to 1 or 2 in the present application.

In addition, the cross section of the support bracket 6 is as shown in fig. 5 and 6, the support bracket 6 is installed in the frame 1, the support bracket 6 is a cross-shaped support bracket or is in a shape of ten, rich, t, Π, ψ, i, x, swastika, field and the like, the shape of the support bracket 6 is not limited to the above shape, and other structures for placing the grating strips 51 are also possible. The size of the support bracket 6 is 300-. The shape of the support bracket is not limited to the two configurations described above with reference to fig. 5 and 6.

The grid type enlarged footing tool anchor of the invention has the following working principle: symmetrically driving the grid type enlarged head tool anchor along the periphery of the test pile, pulling the connecting rod to adjust the position of the grid enlarged head component to form an enlarged head counter-force anchor pile, and then installing a counter-force beam and a jack to apply pressure according to the requirements of the anchor pile method static load test to perform the test. And (5) after the test is finished, pulling out the tool anchor.

The grid type enlarged footing tool anchor has the advantages that 1, the use is immediate and rapid, in the general pile driving process, as the soil body is strongly disturbed, the soil body around the pile generates ultra-pore water pressure, and the friction force between the soil body and the pile body is reduced, the working principle of the tool anchor is that a grid with a thin section is horizontally and slowly cut into the soil body in a static pressure manner to form a horizontal end bearing surface with a larger section, so that larger counter force can be provided; the novel content of the anchor is expressed by 2, the design is light, the structural surface is optimized, the anchor can be spliced and lengthened, and the weight of the anchor body is light; the novel content of the anchor rod shows 3, the variety of anchor anchoring equipment can be selected, and as the sectional area of an anchor body is small, the anchor anchoring resistance is small, various equipment such as a vibration hammer, a mechanical arm, a hydraulic hammer and the like with small power can be adopted, the anchor rod is easy to pull out, and the constructability is good; the novel content of the anchor driving device is represented by 4, multiple sets of equipment can be driven to the ground for construction simultaneously, the utilization rate of the anchor driving equipment is improved, and the field working time is saved.

Different from the prior art, the grid type enlarged footing tool anchor is used for counterforce devices such as engineering static load tests and the like, can provide large pulling resistance counterforce, can replace a current static load test pile loading counterforce method, is suitable for various complex engineering environments, is particularly suitable for random sampling detection of tests in deep foundation pits, can be recycled and reused, reduces transportation and hoisting of a large number of loads, reduces installation difficulty, improves construction safety, can be used for simultaneously testing a plurality of sets of equipment, saves field working time and saves cost.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a grid formula enlarged footing instrument anchor, a serial communication port, includes the frame, install the jack in the frame, the lower extreme of frame is provided with vertical spout perpendicularly, vertical spout inside has hollow structure, be connected with the level with hollow structure intercommunication on the vertical spout to the spout, hollow structure internalization is equipped with grid enlarged footing subassembly, grid enlarged footing subassembly includes a plurality of parallel arrangement's grid strip, connect through soft cable between the grid to install the pull rod on the soft cable middle part, grid strip below is provided with the support bracket, the both ends of support bracket are fixed on the pull rod to be connected with soft cable, the jack drives the pull rod pulling and holds the bracket and make the grid strip move between level to spout and vertical spout.

2. The grid type enlarged footing tool anchor of claim 1, wherein the connection portion between the horizontal sliding slot and the vertical sliding slot is a circular arc transition connection.

3. The grid type enlarged head tool anchor of claim 2, wherein the number of the horizontal chute and the grid enlarging head assembly is one to a plurality.

4. The grid type enlarged head tool anchor according to claim 3, wherein the number of the horizontal sliding grooves and the grid enlarged head assembly is plural, and the horizontal sliding grooves are connected to the middle or lower end of the vertical sliding grooves.

5. The grid type enlarged head tool anchor of claim 1, wherein the support bracket is cross-shaped in cross-section.

6. The grid type enlarged footing tool anchor of claim 1, wherein said support bracket has a cross-section in the shape of feng, yi, Π, ψ, yi, x, swastika or swastika.