A multifunctional composite suspended reference beam structure

Abstract

The present invention relates to a testing device for the bearing capacity of foundation piles, in particular to a multifunctional composite suspended reference beam, belonging to the field of civil engineering technology. A multifunctional composite suspended reference beam structure includes a reference beam, a reference beam support rod, and a reference beam support. The reference beam support is installed on the top of the reference beam support rod, and includes a support frame and a reference beam mounting frame; the support frame is a frame structure, and a slideway for accommodating the sliding of the reference beam mounting frame is arranged on the top thereof, and the length direction of the slideway is consistent with the length direction of the reference beam, and the bottom thereof is fixedly installed on the top of the reference beam support rod; the reference beam mounting frame is hoisted in the support frame through a roller structure adapted to the slideway at the top, and a through hole for accommodating the insertion of the reference beam is opened at the bottom thereof. The present invention has the following advantages: 1. The overturning phenomenon of the reference beam is effectively avoided; 2. The material and labor costs are saved; 3. The displacement wire frame and the reference beam are connected by hinged suspension, and the displacement wire frame has a tendency to automatically reset.

Description

Technical Field

[0001] The invention relates to a testing device for the bearing capacity of a foundation pile, in particular to a multifunctional composite suspended reference beam, belonging to the technical field of civil engineering. Background Art

[0002] The static load test technology of the self-balancing method of pile foundation has been widely used in the bearing capacity detection of civil engineering pile foundations such as buildings, ports, bridges, subways, airports, etc., and has achieved good results. The static load test technology of the self-balancing method of pile foundation uses a reference beam and a working beam. The reference beam is an essential reference device for pile foundation bearing capacity detection. It is used to test the relative change reference value of displacement under the load of a single pile. At present, most of the reference beams and working beams are made separately, or a simple bracket is temporarily built on site with a steel frame. They are rigidly connected and inconvenient to use. At the same time, the center of gravity of the reference beam is above the bracket. When the reference beam is disturbed, it cannot return to normal state. As a working beam that carries the displacement wire connection weight, when the displacement wire frame is disturbed, the working beam is prone to tilt. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art and to provide a multifunctional composite suspended reference beam structure which can save material and labor costs and in which the reference beam can be automatically reset.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multifunctional composite suspended reference beam structure, including a reference beam, a reference beam support rod, and a reference beam support, the reference beam support is installed on the top of the reference beam support rod, and it includes a support frame and a reference beam mounting frame; the support frame is a frame structure, and a slideway for accommodating the sliding of the reference beam mounting frame is arranged on the top, the length direction of the slideway is consistent with the length direction of the reference beam, and the bottom is fixed to the top of the reference beam support rod; the reference beam mounting frame is hoisted in the support frame through a roller structure adapted to the slideway at the top, and a through hole for accommodating the insertion of the reference beam is opened at the bottom.

[0005] Preferably, the reference beam mounting frame includes a roller structure and a hanger, the roller structure is a rolling bearing, hinged to the hanger through a connecting piece, a through hole is opened on the hanger, its axial direction is consistent with the axial direction of the reference beam, and its inner diameter is larger than the outer diameter of the reference beam.

[0006] Preferably, there are two rolling bearings, which are arranged along the length direction of the slideway.

[0007] Furthermore, it also includes a displacement wire frame, the top of which is hinged to the reference beam through a connecting piece.

[0008] Preferably, the connecting member includes a hoisting part, a hook and a lifting ring. The hoisting part is hoisted on the reference beam, the hook is installed at the bottom, and the lifting ring is installed on the top of the displacement wire frame, and the hook is adapted to the lifting ring.

[0009] Preferably, both ends of the hoisting part are open, and its inner diameter is larger than the outer diameter of the reference beam. A threaded hole is provided on one side thereof, and the hoisting part and the reference beam are limited by bolts adapted thereto.

[0010] Working principle: The reference beam mounting frame serves as the support point for hanging the reference beam, which is higher than the center of gravity of the reference beam. At the same time, the reference beam mounting frame and the support frame are slidably hoisted. When the reference beam is disturbed, the reference beam mounting frame slides on the support frame. When the interference disappears, the reference beam automatically resets under the action of gravity. The hook and the ring serve as the support point for hanging the displacement wire frame from the reference beam, which is higher than the center of gravity of the displacement wire weight assembly. At the same time, the displacement wire frame and the reference beam are hinged. When the displacement wire frame is disturbed, the displacement wire frame swings in a circle with the hook as the axis. When the interference disappears, the displacement wire frame automatically resets under the action of gravity.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The reference beam support adopts hinge support instead of rigid connection. The reference beam can automatically reset under the action of gravity, which effectively avoids the overturning of the reference beam;

[0013] 2. The reference beam for detection and the working beam for bearing the displacement wire frame can be combined into one, saving material and labor costs;

[0014] 3. The displacement wire frame is connected to the reference beam by hinged suspension, the center of gravity is lower than the fulcrum, and the displacement wire frame tends to reset automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention;

[0016] Figure 2 is an axonometric view of a reference beam support in an embodiment of the present invention;

[0017] Figure 3 is a schematic diagram of a reference beam support structure in an embodiment of the present invention;

[0018] Figure 4 is a cross-sectional view of a reference beam support in an embodiment of the present invention;

[0019] Figure 5 is a side view of a reference beam support in an embodiment of the present invention;

[0020] Figure 6 It is a partial enlarged view of the hinge structure of the displacement wire rack in the embodiment of the present invention;

[0021] Figure 7 It is a schematic diagram of an embodiment of the present invention;

[0022] In the figure, 1. reference beam; 2. reference beam hook; 3. displacement wire rack; 4. weight; 5. pulley; 6. support frame; 7. displacement wire; 8. displacement wire sensor; 9. ground; 10. reference beam support rod; 11. lifting ring; 12. lifting rail; 13. rolling bearing; 14. hanger. DETAILED DESCRIPTION

[0023] It should be noted that, in this embodiment, the directional words "up", "down", "left", "right", "top", "bottom", etc. are described as shown in the accompanying drawings, and ordinary technicians in this field should understand them in accordance with the technical solution of this embodiment.

[0024] The following is combined with Figure 1-7 The present invention is further described in detail: a multifunctional composite suspended reference beam structure, including a reference beam 1, a reference beam support rod 10, a reference beam support and a displacement wire frame hinge structure; in the present embodiment, the cross-sectional shape of the reference beam 1 is rectangular, and there are two reference beam support rods 10, which are respectively arranged at appropriate positions at equal distances on both sides of the pile, and their bottoms are fixed on the ground 9, and the reference beam support is fixed on the top of the reference beam support rod 10. The reference beam 1 is hoisted on the reference beam support, and when the reference beam 1 is disturbed by the outside world, no side tilting will occur; the displacement wire frame hinge structure is hingedly suspended and connected to the reference beam 1.

[0025] like Figure 2-5 As shown, the reference beam support includes a support frame 6 and a reference beam mounting frame; the support frame 6 is a frame structure, which includes a base plate, columns, hanging rails 12 and fixings. The base plate is a rectangular structure, and its bottom surface is fixed to the top of the reference beam support rod 10, and the axis of the reference beam support rod 10 is in a straight line with the center of the base plate; there are four columns, which are respectively located at the four corners of the base plate, and the tops of two adjacent columns are connected and fixed by a cross plate. In this embodiment, the tops of the two columns at the short side of the base plate are connected and fixed by a cross plate, thereby forming a support frame for the hanging rails 12. The hanging rails 12 are fixed to the tops of the columns by fixings. Its cross section is a rectangular structure with a hollow interior. A slide groove is provided on the bottom surface of the column, and the length direction of the slide groove is consistent with the length direction of the reference beam, forming a slideway / slide rail for the sliding lifting of the reference beam mounting frame; the reference beam mounting frame includes a rolling bearing 13 and a hanger 14, and there are two rolling bearings 13, which are distributed left and right along the length direction of the hanging rail, and are hinged to the hanger 14 through a connecting piece. The hanger 14 is a rectangular structure with a hollow interior, and its outer diameter is smaller than the inner diameter of the support frame 6, and its inner diameter is larger than the outer diameter of the reference beam 1. It is suspended in the support frame 6 by the rolling bearing 13. When the reference beam 1 is disturbed, the reference beam mounting frame slides on the support frame 6. When the interference disappears, the reference beam 1 is automatically reset under the action of gravity.

[0026] like Figure 1 , 6As shown, the displacement wire frame hinge structure includes a displacement wire frame 3, a weight 4, a pulley 5, a displacement wire 7, a displacement wire sensor 8, a lifting ring 11 and a connecting piece. One end of the displacement wire 7 is fixed to the upper plate or the lower plate of the load box, and the other end passes through the pulley 5 arranged on the displacement wire frame 3 and is connected to the weight 4. The displacement wire sensor 8 is arranged at the other end of the weight 4. The displacement wire sensor 8 is used to monitor the distance moved by the displacement wire 7 relative to the ground. The lifting ring 11 is installed on the top of the displacement wire frame 3 and is located on the axis of the displacement wire frame 3. In this embodiment, there are two weights 4, pulleys 5, displacement wires 7 and displacement wire sensors 8, which are respectively arranged on the left and right sides of the displacement wire frame 3. The displacement wire frame 3 is hinged to the reference beam 1 through a connecting piece, and the connecting piece includes a lifting part and a reference beam hook 2. The lifting part is lifted on the reference beam 1, and the reference beam hook 2 is installed at the bottom thereof. The reference beam hook 2 is adapted to the lifting ring 11, wherein the cross-section of the lifting part is a rectangular structure with a hollow interior, and its inner diameter is larger than the outer diameter of the reference beam 1, and a threaded hole is provided on one side thereof. The lifting part and the reference beam 1 are limited by bolts adapted thereto, so as to realize the hinged suspension connection between the displacement wire frame 3 and the reference beam 1; when the hinged structure of the displacement wire frame is disturbed, the hinged structure of the displacement wire frame swings in a circle with the hook as the axis, and when the interference disappears, the hinged structure of the displacement wire frame automatically resets under the action of gravity.

[0027] The installation process of the reference beam structure:

[0028] 1. Install the reference beam support rod 10 at an appropriate position at equal distances on both sides of the pile, and install the reference beam support on the top plate of the reference beam support rod 10;

[0029] 2. Put the connecting piece hinged with the displacement wire frame on the reference beam 1. At the same time, insert the two ends of the reference beam 1 into the reference beam support respectively to realize the hoisting of the reference beam 1 and the reference beam support;

[0030] 3. Install the displacement wire rack 3, and pass the displacement wire 7 connected to the load box through the pulley 5;

[0031] 4. Connect the weight 4 to the other end of the displacement wire 7;

[0032] 5. Install the displacement wire sensor 8 on the displacement wire frame 3 to monitor the distance moved by the displacement wire 7 relative to the ground.

[0033] like Figure 7 As shown, during use, when the reference beam is disturbed by external force, the reference beam mounting frame slides on the support frame 6, and when the interference disappears, the reference beam automatically resets under the action of gravity; when the displacement wire frame hinged structure is disturbed by external force and tilts, since the displacement wire frame 3 and the reference beam 1 are hingedly connected, the displacement wire frame cannot drive the reference beam 1 and the displacement wire frame 3 to tilt synchronously, thereby ensuring the stability of the reference beam, and when the interference disappears, the displacement wire frame 3 automatically resets under the action of gravity.

[0034] Working principle: The reference beam 1 for detection and the working beam of the bearing displacement wire frame hinged support structure are combined into one, turning two into one. The reference beam support is used as the support point for hanging the reference beam, which is higher than the center of gravity of the reference beam, ensuring that the reference beam can automatically reset under the action of gravity; the reference beam hook 2 and the hanging ring 11 are used as the support points for the reference beam to hang the displacement wire weight, etc., which are higher than the center of gravity of the displacement wire weight assembly, ensuring that the structure of the suspension displacement wire weight assembly can automatically reset under the action of gravity.

[0035] The above embodiments are merely preferred implementations of the present invention and do not constitute limitations to the present invention. The reference beam support and the displacement wire frame hinge structure can be used simultaneously with the reference beam, or they can be used separately in a static load test of the pile self-balancing method; the reference beam 1 and the reference beam support rod 10 are not limited to the structures in the above embodiments, and other structures can also be used, for example: in order to overcome the gravity of the reference beam 1 itself and the gravity of the displacement wire frame hinge structure, reference beams of different structures are used. Any extension, deformation, equivalent substitution, etc. made by ordinary technicians in this field without departing from the principles of this application should be included in the protection scope of the present invention.

Claims

1. A multifunctional composite suspended reference beam structure, comprising a reference beam and a reference beam support rod, characterized in that: It also includes a reference beam support, which is installed on the top of the reference beam support rod and includes a support frame and a reference beam mounting frame; The support frame is a frame structure, and a slideway is arranged on the top of the support frame for accommodating the sliding of the reference beam mounting frame. The length direction of the slideway is consistent with the length direction of the reference beam, and the bottom of the support frame is fixedly installed on the top of the reference beam support rod; the reference beam mounting frame includes a roller structure and a hanger, and the roller structure is a rolling bearing, which is hinged with the hanger through a connecting piece, and a through hole is opened on the hanger, and the axial direction of the through hole is consistent with the axial direction of the reference beam, and the inner diameter of the through hole is larger than the outer diameter of the reference beam; the reference beam mounting frame is hoisted in the support frame through the roller structure adapted to the slideway at the upper part, and the through hole allows the reference beam to be inserted; It also includes a displacement wire frame, the top of which is hinged to the reference beam through a connecting piece.

2. The multifunctional composite suspended reference beam structure according to claim 1, characterized in that: There are two rolling bearings, which are arranged along the length direction of the slideway.

3. The multifunctional composite suspended reference beam structure according to claim 1, characterized in that: The connecting piece comprises a hoisting part, a hook and a lifting ring. The hoisting part is hoisted on the reference beam, the hook is installed at the bottom, and the lifting ring is installed on the top of the displacement wire frame, and the hook is adapted to the lifting ring.

4. The multifunctional composite suspended reference beam structure according to claim 3 is characterized in that: The two ends of the hoisting part are opened, and the inner diameter thereof is larger than the outer diameter of the reference beam. A threaded hole is opened on one side thereof, and the hoisting part and the reference beam are limited by bolts adapted thereto.

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