Test equipment for testing bearing capacity of stiff composite pile

Abstract

The utility model discloses test equipment for testing the bearing capacity of a stiff composite pile, which comprises a bottom frame, and a bearing structure is arranged on the bottom frame; the bearing structure and the bottom frame are fixedly connected with a cross rod, the middle of the cross rod is slidably connected with an extension rod, the lower end of the extension rod is fixedly connected with a pressing plate, the pressing plate is fixedly connected with a jack, the bottom frame is fixedly connected with a sliding rail, the sliding rail is fixedly connected with a cross beam, and the cross beam is provided with a plurality of clamping grooves. According to the utility model, the bearing structure is arranged, the jack, the pressing plate, the bottom frame, the sliding rail and other parts are integrally designed, so that test equipment does not need to be built on site, relatively tedious building and combination do not need to be carried out, and the test can be carried out only by hoisting the bearing structure onto the composite pile and then hoisting the concrete counterweight onto the bearing structure; the test efficiency is improved, the test error can be reduced, and the test precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection equipment, in particular to a test equipment for testing the bearing capacity of a rigid composite pile. Background Art

[0002] The quality of rigid composite piles should be inspected according to three types: loose piles, flexible piles, and rigid piles, and must comply with the relevant provisions of the current national standards "Code for Acceptance of Construction Quality of Building Foundation Engineering" GB50202, "Technical Code for Building Pile Foundations" JGJ94, and "Technical Code for Building Foundation Treatment" JGJ79. Rigid composite piles should be tested for bearing capacity after pile formation. The test should be carried out at the design elevation. The number of tests for each individual project should not be less than 1% of the total number of project piles, and should not be less than 3 piles.

[0003] The bearing capacity test of rigid composite piles requires a static load test. In the prior art, the static load test requires first leveling the pile foundation, then building a support frame to support the concrete counterweight and setting up a steel beam, and then placing the concrete counterweight on the support frame, which makes the test operation more cumbersome. For this reason, we propose a test equipment for the bearing capacity test of rigid composite piles to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a test device for testing the bearing capacity of a rigid composite pile.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A test device for testing the bearing capacity of a rigid composite pile, comprising a base frame, and a bearing structure is arranged on the base frame;

[0007] The bearing structure is fixedly connected to the base frame with a cross bar, the middle part of the cross bar is slidably connected with an extension bar, the lower end of the extension bar is fixedly connected with a pressure plate, and the pressure plate is fixedly connected with a jack, the base frame is fixedly connected with a slide rail, and the slide rail is fixedly connected with a cross beam, the cross beam is provided with a plurality of slots, and the slots are clamped with longitudinal beams, and the longitudinal beam is fixedly connected with a bearing plate;

[0008] Also included is a guide assembly for assisting positioning.

[0009] Preferably, the guide assembly includes an annular frame, a plurality of cross bars are inserted into the annular frame, an inner ring is rotatably connected to the annular frame, a guide rail is fixedly connected to the inner ring, a guide block matching the guide rail is fixedly connected to the lower surface of the cross bar, and a plurality of guide rods are arranged on the upper surface of the annular frame.

[0010] Preferably, a sink groove is formed on one of the extension rods, and a sliding pipe is slidably connected in the sink groove, and a pipeline for connecting a jack is arranged in the sliding pipe.

[0011] Preferably, the base frame and the supporting plate are both rotatably connected with lifting ears.

[0012] Preferably, a ground anchor is fixedly connected to the lower surface of the annular frame, and the guide rod is detachably connected to the annular frame.

[0013] Preferably, the guide rod comprises a vertical rod, the upper end of the vertical rod is fixedly connected to the oblique rod, the lower end of the vertical rod is provided with an external thread, and the upper surface of the annular frame is provided with a threaded hole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model integrates the jack, pressure plate, chassis and slide rails by setting a bearing structure, and does not need to build test equipment on site, nor does it need to carry out complicated building combinations. It only needs to hoist the bearing structure onto the composite pile, and then hoist the concrete counterweight onto the bearing structure to carry out the test, which not only improves the test efficiency, but also reduces the test error and improves the test accuracy.

[0016] 2. The utility model, by setting a guide component, can facilitate users to quickly arrange the bearing structure on the pile, and facilitate the positioning of the bearing mechanism to ensure that the pressure plate is exactly located on the composite pile. By setting a sink groove in conjunction with a sliding pipe, an oil pipe for driving the jack and a line for collecting test data can be arranged in the sliding pipe, which is convenient for users to complete the construction of the test scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a test device for testing the bearing capacity of a rigid composite pile proposed by the utility model;

[0018] Figure 2 A schematic diagram of the bearing structure of a test device for testing the bearing capacity of a rigid composite pile proposed by the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of a test device for testing the bearing capacity of a rigid composite pile proposed by the utility model;

[0020] Figure 4 The present invention is a schematic diagram of the structure of a guide assembly of a test device for testing the bearing capacity of a rigid composite pile proposed by the present invention.

[0021] In the figure: 1, base frame; 2, cross bar; 3, extension rod; 4, pressure plate; 5, jack; 6, cross beam; 7, slide rail; 8, longitudinal beam; 9, load-bearing plate; 10, ring frame; 11, push rod; 12, inner ring; 13, guide rail; 14, guide rod; 15, slide tube; 16, lifting ear; 17, ground anchor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 4 , a test device for testing the bearing capacity of a rigid composite pile, comprising a base frame 1, and a bearing structure is arranged on the base frame 1;

[0024] The bearing structure is fixedly connected to the base frame 1 with a cross bar 2, an extension rod 3 is slidably connected to the middle of the cross bar 2, a pressure plate 4 is fixedly connected to the lower end of the extension rod 3, and a jack 5 is fixedly connected to the pressure plate 4, a slide rail 7 is fixedly connected to the base frame 1, and a cross beam 6 is fixedly connected to the slide rail 7, a plurality of slots are provided on the cross beam 6, and a longitudinal beam 8 is clamped on the slot, and a bearing plate 9 is fixedly connected to the longitudinal beam 8;

[0025] In this design, a ring frame 10 is arranged in the middle of the cross bar 2, and the extension rod 3 is slidably connected with the inner wall of the ring frame 10, and the extension rod 3 can slide up and down. When hoisting this bearing structure, the extension rod 3 slides to the lowest position within the travel range, and the position of the pressure plate 4 is lower than the position of the cross bar 2. At this time, the user driving the crane and the auxiliary operation staff can accurately observe the position of the pressure plate 4, which is convenient for the user to adjust the position of the pressure plate 4 to the top of the composite pile. The jack 5 is the core of the test equipment. The jack 5 is used to lift the cross beam 6 and the concrete counterweight on the bearing plate 9, and then apply pressure to the composite pile to complete the entire static pressure test. The longitudinal beam 8 is connected with the card slot, and the bearing plate 9 and the base frame 1 are hoisted and spliced ​​twice to obtain a wider field of view;

[0026] Also included is a guide assembly for assisting positioning;

[0027] Based on the above design, when the user needs to conduct a bearing capacity test, the pile head of the composite pile is first leveled, and then the base frame 1 is hoisted onto the composite pile by a crane so that the pressure plate 4 is against the pile head of the composite pile, and then the bearing plate 9 is hoisted onto the beam 6, and finally the concrete counterweight is hoisted onto the bearing plate 9. At this time, the user drives the jack 5 to operate and uses the sensors and other equipment arranged on the jack 5 to control the bearing pressure, and finally completes the bearing test. The guide assembly can further guide the crane driver to place and adjust the position of the base frame 1, thereby improving the efficiency of the test equipment layout.

[0028] Further, the guide assembly includes an annular frame 10, a plurality of horizontally arranged push rods 11 are inserted on the annular frame 10, an inner ring 12 is rotatably connected inside the annular frame 10, a guide rail 13 is fixedly connected to the inner ring 12, a guide block matching the guide rail 13 is fixedly connected to the lower surface of the push rod 11, and a plurality of guide rods 14 are arranged on the upper surface of the annular frame 10;

[0029] The guide rail 13 is arc-shaped. When the inner ring 12 is rotated relative to the annular frame 10, multiple push rods 11 can be driven to move synchronously in the direction of approaching or moving away from each other. The user first moves the annular frame 10 to the vicinity of the composite pile and puts it on the composite pile. At this time, the user rotates the inner ring 12 and uses the guide rail 13 and the guide block to drive multiple push rods 11 to move in the direction of the composite pile, so that the center of the composite pile is located at the center of the annular frame 10. At this time, multiple erected guide rods 14 can be intuitively seen by the crane driver. When placing the base frame 1, the guide rods 14 are used to cooperate with the pressure plate 4 to adjust the position of the base frame 1, and the base frame 1 is completely placed on the ground after the adjustment is completed. Under this design, there is no need for staff to stand near the composite pile to cooperate and assist during the hoisting process, which not only reduces the demand for human resources but also improves the safety when building the test scene.

[0030] Furthermore, a sink groove is formed on one of the extension rods 3, and a slide pipe 15 is slidably connected in the sink groove, and a pipeline for connecting the jack 5 is arranged in the slide pipe 15;

[0031] In this design, the sliding pipe 15 is used to place the pipeline for supplying hydraulic oil to the jack 5 and the line for controlling and transmitting data to the jack 5, which is not only used to protect the pipeline during the lifting process, but also convenient for users to connect the pipeline after lifting.

[0032] Furthermore, the base frame 1 and the carrying plate 9 are both rotatably connected with lifting ears 16 .

[0033] Furthermore, a ground anchor 17 is fixedly connected to the lower surface of the annular frame 10, and the guide rod 14 is detachably connected to the annular frame 10;

[0034] The ground anchor 17 is provided to fix the annular frame 10 to the ground to prevent the swinging pressure plate 4 from driving the guide assembly to move and causing positioning deviation when the test equipment is hoisted and arranged. The detachable guide rod 14 is provided, on the one hand, to make it easier for the user to arrange the guide assembly, and on the other hand, to install a suitable number of guide rods 14 according to actual needs to avoid interference between the guide rods 14 and the cross bar 2.

[0035] Furthermore, the guide rod 14 includes a vertical rod, the upper end of which is fixedly connected to an oblique rod, and the oblique rod can better improve the guiding effect, the lower end of the vertical rod is provided with an external thread, and the upper surface of the annular frame 10 is provided with a threaded hole. After the external thread on the vertical rod is completely screwed into the threaded hole, the multiple oblique rods are all collinear with the diameter of the annular frame 10.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test equipment for testing the bearing capacity of a rigid composite pile, characterized in that: It comprises a base frame (1), and a bearing structure is arranged on the base frame (1); The bearing structure is fixedly connected to the base frame (1) with a cross bar (2), the middle part of the cross bar (2) is slidably connected with an extension bar (3), the lower end of the extension bar (3) is fixedly connected with a pressure plate (4), and the pressure plate (4) is fixedly connected with a jack (5), the base frame (1) is fixedly connected with a slide rail (7), and the slide rail (7) is fixedly connected with a cross beam (6), the cross beam (6) is provided with a plurality of slots, and the slots are clamped with longitudinal beams (8), and the longitudinal beam (8) is fixedly connected with a bearing plate (9); Also included is a guide assembly for assisting positioning.

2. The test equipment for testing the bearing capacity of a rigid composite pile according to claim 1, characterized in that: The guide assembly comprises an annular frame (10), a plurality of push rods (11) are inserted into the annular frame (10), an inner ring (12) is rotatably connected inside the annular frame (10), a guide rail (13) is fixedly connected to the inner ring (12), a guide block matching the guide rail (13) is fixedly connected to the lower surface of the cross bar (2), and a plurality of guide rods (14) are arranged on the upper surface of the annular frame (10).

3. The test equipment for testing the bearing capacity of a rigid composite pile according to claim 1, characterized in that: A sink groove is formed on one of the extension rods (3), and a slide pipe (15) is slidably connected in the sink groove. A pipeline for connecting to a jack (5) is arranged in the slide pipe (15).

4. The test equipment for testing the bearing capacity of a rigid composite pile according to claim 1, characterized in that: The base frame (1) and the bearing plate (9) are both rotatably connected with lifting ears (16).

5. The test equipment for testing the bearing capacity of a rigid composite pile according to claim 2, characterized in that: A ground anchor (17) is fixedly connected to the lower surface of the annular frame (10), and the guide rod (14) is detachably connected to the annular frame (10).

6. The test equipment for testing the bearing capacity of a rigid composite pile according to claim 5, characterized in that: The guide rod (14) comprises a vertical rod, the upper end of which is fixedly connected to a diagonal rod, the lower end of which is provided with an external thread, and the upper surface of the annular frame (10) is provided with a threaded hole.

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