CN217981078U - Test device for testing mechanical properties of contact surface of pile foundation-reinforcement - Google Patents
Test device for testing mechanical properties of contact surface of pile foundation-reinforcement Download PDFInfo
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- CN217981078U CN217981078U CN202221876190.XU CN202221876190U CN217981078U CN 217981078 U CN217981078 U CN 217981078U CN 202221876190 U CN202221876190 U CN 202221876190U CN 217981078 U CN217981078 U CN 217981078U
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Abstract
The utility model relates to a test device for testing the mechanical property of the contact surface of a pile foundation-reinforcement body, which comprises two steel frames, two jacks, two sliding blocks, two steel plates and a press machine; the steel plates corresponding to the jacks are driven by the jacks to drive the corresponding sliding blocks to slide in the direction close to or far away from each other in the horizontal direction, one surfaces, opposite to the two sliding blocks, of the two sliding blocks apply pressure to the two ends of the side face of the pile foundation-reinforced body sample when the two sliding blocks are close to each other, the press machine is arranged between the two steel frames, the base plate of the press machine is used for supporting the bottom of the pile foundation-reinforced body sample, and the pressure head of the press machine presses downwards to apply pressure to the upper end and the lower end of the pile foundation-reinforced body sample. By the arrangement, the testing device is convenient for engineering personnel to test the stress of the contact surface of the pile foundation and the reinforcement, is convenient to operate, is similar to a field environment, and has accurate test data.
Description
Technical Field
The utility model relates to a building experiment mould technical field particularly, relates to a test device for testing pile foundation-reinforcement contact surface mechanical properties.
Background
In the field of building pile foundation engineering, the adoption of an efficient, economic and energy-saving new construction technology to replace an old high-cost and high-energy-consumption technology is an inevitable requirement for industrial development. The pile foundation-reinforcing body mixing is a novel composite pile for pouring cement paste after the construction of pouring concrete into the pile foundation is finished, and has the advantages of large side friction resistance of a cement mixing pile and high pile foundation strength of a concrete core pile.
However, sometimes, the bearing capacity of the cement-soil contact surface cannot be completely determined by a method derived by pure theoretical calculation, and the change of the bearing capacity of the pile foundation-reinforcement contact surface during stress cannot be visually shown. Therefore, an engineer can use the model of the pile foundation and the reinforcement body to simulate the real stress condition of the pile foundation concrete, so that the stress of the contact surface of the pile foundation and the reinforcement body can be visually displayed, and therefore, a test device for applying pressure to the model of the pile foundation and the reinforcement body and observing the stress change of the model is urgently needed to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned not enough, provide a test device for testing pile foundation-reinforcement contact surface mechanical properties, aim at applying pressure to pile foundation-reinforcement body model, survey its atress and change.
A test device for testing the mechanical properties of the contact surface of a pile foundation-reinforcement body comprises two steel frames, two jacks, two sliding blocks, two steel plates and a press machine; the two steel frames are vertically arranged on the ground at intervals, the two jacks are respectively adjacent to the corresponding steel frames, one ends of the two jacks are abutted to the ground, the other ends of the two jacks are respectively hinged to one ends of the corresponding steel plates, the other ends of the two steel plates are respectively hinged to sliders, the two sliders are respectively mounted on one sides, far away from the ground, of the corresponding steel frames in a sliding mode, the corresponding steel plates are driven by the jacks to drive the corresponding sliders to slide in the horizontal direction towards the direction close to or far away from each other, the opposite surfaces of the two sliders apply pressure to the two ends of the side face of the pile foundation-reinforcement sample when the opposite surfaces of the two sliders are close to each other, the press machine is arranged between the two steel frames, a seat plate of the press machine is used for supporting the bottom of the pile foundation-reinforcement sample, and a press head of the press machine is pressed down to apply pressure to the upper end and the lower end of the pile foundation-reinforcement sample.
Preferably, the method comprises the following steps: two opposite ends of the sliding blocks are respectively provided with a cambered surface force transmission plate and a plane force transmission plate.
Preferably, the method comprises the following steps: the steelframe includes the support section that vertical direction extends and keeps away from ground and the slide rail section that extends along the horizontal direction, the one end of supporting the section is used for being connected with ground, the other end and the slide rail section of supporting the section are connected, slider slidable mounting is in on the slide rail section.
Preferably, the method comprises the following steps: each support section is fixedly connected with the ground through expansion bolts.
Preferably, the method comprises the following steps: the size and the shape of the pressing surface of the pressing head of the pressing machine are consistent with those of the concrete area in the pile foundation-reinforced body sample.
Preferably, the method comprises the following steps: the base plate of the press machine is further provided with a test base plate, and an avoidance opening penetrates through the test base plate in a concrete area in a pile foundation-reinforced body sample.
Adopt above-mentioned scheme, the beneficial effects of the utility model are that:
the test device is convenient for engineering personnel to test the stress of the contact surface of the pile foundation and the reinforcement, is convenient to operate, is similar to a field environment, and has accurate test data.
Description of the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the testing apparatus for testing mechanical properties of a pile foundation-reinforcement contact surface according to the present invention;
FIG. 2 is a schematic structural diagram of a pile foundation-reinforcing body sample in the testing apparatus for testing mechanical properties of a pile foundation-reinforcing body contact surface according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a pressure head of a press machine in the testing apparatus for testing mechanical properties of a pile foundation-reinforcement contact surface according to the present invention;
FIG. 4 is a schematic structural diagram of an embodiment of a test base plate in the testing apparatus for testing mechanical properties of a pile foundation-reinforcement contact surface according to the present invention;
fig. 5 is a schematic structural diagram of an embodiment of the mold for manufacturing a pile foundation-reinforcement model according to the present invention;
fig. 6 is a schematic structural diagram of an embodiment of the baffle slot in the mold for manufacturing the pile foundation-reinforcement model according to the present invention;
fig. 7 is a schematic structural diagram of an embodiment of an inner ring baffle and an outer ring baffle in a mold for manufacturing a pile foundation-reinforcement model according to the present invention;
fig. 8 is a schematic structural diagram of an embodiment of the present invention for manufacturing a bottom plate in a mold for manufacturing a pile foundation-reinforcement model.
Description of reference numerals: 1000. pile foundation-reinforced solid sample; 100. a steel frame; 110. a support section; 120. a slide rail section; 200. a slider; 210. a cambered surface dowel plate; 220. a planar force transfer plate; 300. a steel plate; 400. a jack; 500. a pressure head; 510. a seat plate; 520. a stone collecting barrel; 600. an expansion bolt; 700. a test base plate; 710. avoiding the opening; 800. a stone collecting barrel; 10. an inside bottom plate; 20. a baffle slot; 21. a slot clamping section; 22. a plug section; 30. an outer panel; 40. an inner ring baffle; 50. an outer ring baffle; 60. manufacturing a bottom plate; 61. and (4) inserting grooves.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
As shown in fig. 1 to 4, a testing apparatus for testing mechanical properties of a pile foundation-reinforcement contact surface includes two steel frames 100, two jacks 400, two sliding blocks 200, two steel plates 300, and a press; the two steel frames 100 are vertically arranged on the ground at intervals, the two jacks 400 are respectively arranged adjacent to the corresponding steel frames 100, one ends of the two jacks 400 are abutted to the ground, the other ends of the two jacks 400 are respectively hinged to one ends of the corresponding steel plates 300, the other ends of the two steel plates 300 are respectively hinged to the sliders 200, the two sliders 200 are respectively and slidably mounted on one sides, far away from the ground, of the corresponding steel frames 100, the jacks 400 drive the corresponding steel plates 300 to drive the corresponding sliders 200 to slide in the horizontal direction towards the directions close to each other or far away from each other, opposite surfaces of the two sliders 200 apply pressure to two ends of the side surface of the pile foundation-reinforcement sample 1000 when approaching each other, the press machine is arranged between the two steel frames 100, a base plate 510 of the press machine is used for supporting the bottom of the pile foundation-reinforcement sample 1000, and a press head 500 of the press machine presses down to apply pressure to the upper end and the lower end of the pile foundation-reinforcement sample 1000.
It should be noted that the two steel frames 100 should be firmly and stably connected to the ground to avoid being separated from the ground under the pushing of the two jacks 400. In addition, the mode that the both ends of steel sheet 300 and jack 400 and slider 200 are articulated to be connected has the multiple, in the embodiment of the utility model, the articulated department of steel sheet 300 and jack 400 and slider 200 is provided with the pivot, and jack 400 and slider 200 are equipped with the mating holes in articulated department is concave, and each mating hole rotates with the pivot that steel sheet 300 corresponds to be connected to make steel sheet 300 and jack 400 and slider 200 articulate and be connected.
In addition, since the two opposite sides of the pile foundation-reinforcing body sample 1000 are arc-shaped and flat, in order to make the pile foundation-reinforcing body sample 1000 uniformly stressed when the two sliding blocks 200 apply pressure to the pile foundation-reinforcing body sample 1000, the two opposite ends of the two sliding blocks 200 are respectively provided with the arc-shaped force transmission plate 210 and the plane force transmission plate 220.
In order to facilitate the sliding connection between the slider 200 and the steel frame 100, in an embodiment of the present invention, the steel frame 100 includes a supporting section 110 extending in the vertical direction and a sliding rail section 120 extending away from the ground and along the horizontal direction, one end of the supporting section 110 is used for being connected to the ground, the other end of the supporting section 110 is connected to the sliding rail section 120, and the slider 200 is slidably mounted on the sliding rail section 120. The matching position of the slide rail section 120 and the slide block 200 can be concavely arranged to form a guide rail, and the slide block 200 is slidably arranged in the guide rail; the matching position of the slide rail section 120 and the slide block 200 may also be a convex position to form a guide rail, and the sliding groove is concavely arranged at the sliding matching position of the slide block 200 and the guide rail, so that the slide block 200 and the slide rail section 120 can also be connected in a sliding manner.
In order to ensure that the two steel frames 100 are firmly and stably connected to the ground, each supporting section 110 is fixedly connected to the ground through an expansion bolt 600.
In addition, in order to ensure that the stress point is on the pile foundation of the pile foundation-reinforced body sample 1000 when the ram 500 of the press machine is pressed down, in this embodiment, the size and shape of the press surface of the ram 500 of the press machine are consistent with the size and shape of the concrete area in the pile foundation-reinforced body sample 1000. Specifically, the area of the pile foundation-reinforced body sample 1000 is a semi-cylinder, that is, the pressing surface of the press head 500 of the press machine is semi-circular.
In addition, the bed plate 510 of the press is provided with a test bed plate 700, and the test bed plate 700 is provided with an escape opening 710 penetrating through a concrete region in the pile foundation-reinforcing body sample 1000. So that the test base plate 700 does not abut against the reinforcement area after the ram 500 of the press is pressed down, and thus the mechanical properties of the pile foundation-reinforcement contact surface can be tested.
It should be noted that, in order to prevent fragments from falling to the ground and being difficult to clean after the pile foundation-reinforcing body sample 1000 is pressed and the pile foundation-reinforcing body sample 1000 is damaged, the test apparatus further comprises a stone collector 800, the stone collector 800 is arranged on the base plate 510 of the press, and the test base plate 700 is placed in the stone collector 800.
The utility model discloses the pile foundation-reinforcement body sample 1000 that uses need be made through the mould of customization, so far the utility model discloses still provide a preparation embodiment of this mould, can produce the pile foundation-reinforcement body sample 1000 that the test device that produces and be used for testing pile foundation-reinforcement body contact surface mechanical properties uses with this mould.
Specifically, as shown in fig. 5 to 8, the custom mold includes an inner bottom plate 10, four baffle slots 20, an outer side plate 30, an inner ring baffle 40, an outer ring baffle 50, and a fabrication bottom plate 60; wherein, each baffle groove 20 is the spaced setting on the bottom plate 10 of inboard, each baffle groove 20 all has the draw-in groove section 21 that sets up along its extending direction and the grafting section 22 of the lateral direction protrusion draw-in groove section 21, preparation bottom plate 60 is concave to be equipped with inserting groove 61, each grafting section 22 and inserting groove 61 plug-in connection, baffle groove 20 keeps away from the one end and the outer panel 30 butt of grafting section 22, inner ring baffle 40 all is the arc setting with outer ring baffle 50, the both ends of inner ring baffle 40 and the draw-in groove section 21 that sets up two baffle grooves 20 adjacent and lie in the middle part at inboard bottom plate 10 are the cooperation of pegging graft, the both ends of outer ring baffle 50 and the draw-in groove section 21 that sets up two baffle grooves 20 that inboard bottom plate 10 lies in the outside position are the cooperation of pegging graft.
Specifically, each baffle groove 20 is connected with the inner side bottom plate 10 in a detachable connection mode, each baffle groove 20 can be connected with the inner side bottom plate 10 in a clamping connection mode, each baffle groove 20 can also be connected with the inner side bottom plate 10 in a fastener threaded connection mode, each baffle groove 20 can also be connected with the inner side bottom plate 10 in other detachable connection modes, the detachable connection mode is adopted, and demolding is conveniently carried out on the model sample after cement slurry is poured in subsequent concrete pouring.
It should be noted that the distance between the two baffle grooves 20 located in the middle of the inner bottom plate 10 is equal to the distance between the two arc-shaped end surfaces of the inner ring baffle 40, so as to facilitate the insertion and matching between the two ends of the inner ring baffle 40 and the corresponding slot sections 21 of the two baffle grooves 20; the distance between the two baffle grooves 20 located at the outer side of the inner bottom plate 10 is equal to the distance between the two arc-shaped end faces of the outer ring baffle 50, so that the two ends of the outer ring baffle 50 are conveniently inserted and matched with the clamping groove sections 21 of the two corresponding baffle grooves 20.
It should be noted that the two baffle grooves 20 and the inner ring baffle 40 located in the middle of the inner bottom plate 10, the manufacturing bottom plate 60 and the outer side plate 30 together enclose a casting cavity for casting concrete; the baffle slots 20, the outer ring baffle 50, the inner ring baffle 40, the manufacturing bottom plate 60, the inner side bottom plate 10 and the outer side plate 30 are jointly surrounded to form a pouring cavity, and the pouring cavity is used for pouring cement slurry after concrete in the pouring cavity is solidified.
After the concrete is poured, the inner ring baffle 40 and the two baffle grooves 20 positioned in the middle of the inner side base plate 10 can be detached, so that a sample formed by the concrete can simulate a pile foundation; then grouting cement into the grouting cavity to form a reinforced body model, and then removing the two baffles positioned at the outer part of the inner base plate 10 and the manufacturing base plate 60, thereby completing the model of the pile foundation-reinforced body contact surface.
Further, in order to ensure the connection strength between the bottom plate 60 and each baffle slot 20 and prevent the bottom plate 60 from being staggered with the inner bottom plate 10 when concrete is poured, the insertion slots 61 are in interference fit with the insertion sections 22. With such an arrangement, the manufacturing bottom plate 60 and the baffle slots 20 are relatively fixed through the interference fit plug connection, so that the manufacturing bottom plate 60 and the inner side bottom plate 10 are relatively firm and are not easy to be dislocated.
In addition, in order to prevent leakage during the cement paste pouring due to a gap between the production floor 60 and the outer ring fence 50, the outer edge of the production floor 60 is provided in an arc shape so as to abut against the arc-shaped surface of the outer ring fence 50. So set up, outer ring baffle 50 can enclose and establish in the outside of preparation bottom plate 60, prevents the grout seepage.
Claims (6)
1. The utility model provides a test device for testing pile foundation-reinforcement contact surface mechanical properties which characterized in that: comprises two steel frames (100), two jacks (400), two sliding blocks (200), two steel plates (300) and a press machine; the two steel frames (100) are vertically arranged on the ground at intervals, the two jacks (400) are respectively arranged adjacent to the corresponding steel frames (100), one ends of the two jacks (400) are abutted to the ground, the other ends of the two jacks (400) are respectively hinged to one ends of the corresponding steel plates (300), the other ends of the two steel plates (300) are respectively hinged to sliding blocks (200), the two sliding blocks (200) are respectively and slidably mounted on one sides, far away from the ground, of the corresponding steel frames (100), the corresponding steel plates (300) are driven by the jacks (400) to drive the corresponding sliding blocks (200) to slide towards the mutual approaching direction or the mutual far away direction in the horizontal direction, the opposite surfaces of the two sliding blocks (200) apply pressure to the two ends of the side surface of the pile foundation-reinforcing body sample (1000) when approaching each other, the press is arranged between the two steel frames (100), a base plate (510) of the press is used for supporting the bottom of the pile foundation-reinforcing body sample (1000), and the press head (500) presses the two ends of the pile foundation-reinforcing body sample (1000) to apply pressure.
2. The testing apparatus for testing mechanical properties of pile foundation-reinforcement interface according to claim 1, wherein: two opposite ends of the two sliding blocks (200) are respectively provided with an arc surface force transmission plate (210) and a plane force transmission plate (220).
3. The testing apparatus for testing mechanical properties of pile foundation-reinforcement interface of claim 1, wherein: the steel frame (100) comprises a supporting section (110) extending in the vertical direction and a sliding rail section (120) far away from the ground and extending in the horizontal direction, one end of the supporting section (110) is used for being connected with the ground, the other end of the supporting section (110) is connected with the sliding rail section (120), and the sliding block (200) is slidably mounted on the sliding rail section (120).
4. The testing apparatus for testing mechanical properties of pile foundation-reinforcement interface according to claim 3, wherein: each support section (110) is fixedly connected with the ground through an expansion bolt (600).
5. The testing apparatus for testing mechanical properties of pile foundation-reinforcement interface according to claim 1, wherein: the size and the shape of the pressing surface of the pressing head (500) of the pressing machine are consistent with those of the concrete area in the pile foundation-reinforcement body sample (1000).
6. The testing device for testing the mechanical properties of the pile foundation-reinforcement contact surface according to claim 5, wherein: the base plate (510) of the press is further provided with a test base plate (700), and an avoidance opening (710) penetrates through the test base plate (700) in a concrete area in the pile foundation-reinforced body sample (1000).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221876190.XU CN217981078U (en) | 2022-07-12 | 2022-07-12 | Test device for testing mechanical properties of contact surface of pile foundation-reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221876190.XU CN217981078U (en) | 2022-07-12 | 2022-07-12 | Test device for testing mechanical properties of contact surface of pile foundation-reinforcement |
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| Publication Number | Publication Date |
|---|---|
| CN217981078U true CN217981078U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221876190.XU Active CN217981078U (en) | 2022-07-12 | 2022-07-12 | Test device for testing mechanical properties of contact surface of pile foundation-reinforcement |
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| CN (1) | CN217981078U (en) |
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2022
- 2022-07-12 CN CN202221876190.XU patent/CN217981078U/en active Active
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