Vertical static load uplift pile cap device

Abstract

The utility model provides a vertical static load uplift pile cap device, which relates to the technical field of building uplift test members, and is characterized in that a row of transverse support breast boards are inserted in a rectangular enclosure frame in a penetrating manner, and the row of transverse support breast boards and the rectangular enclosure frame are inserted together to form a complete pile cap; a synchronous plate is welded to the left ends of the row of transverse supporting breast boards. Two transverse support stress plates are symmetrically welded to the front side and the rear side of the top end of the rectangular enclosure frame. An auxiliary force bearing plate is slidably mounted on each set of locking bolts, a long-strip-shaped rail groove is formed in each auxiliary force bearing plate, and the long-strip-shaped rail grooves are matched with the locking bolts in a sliding, sleeving and inserting mode; the auxiliary force bearing plate abuts against the bottom ends of the row of transverse supporting breast boards through locking nuts. The whole uplift pile cap device can be directly lifted and detached, compared with the prior art, the trouble that a circle of limiting plates and a circle of uplift steel bars need to be cut and removed due to the fact that blocking and limiting of the circle of limiting plates are avoided is omitted, and the detaching and using efficiency of the uplift pile cap device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building pull-out resistance test components, in particular to a vertical static load pull-out resistance pile cap device. Background Art

[0002] At present, the single pile vertical pull-out static load test detection equipment usually conducts the test by connecting the existing steel bars in the test pile with the pull-out test anchor. Specifically, the steel bars of the test pile are passed around the outer periphery of a semi-cylindrical steel hoop, and then welded to the steel bars in the test pile, and the steel hoop is connected to the output end of the jack. In practice, this kind of equipment that implements test detection through the pull-out test anchor has the following problems:

[0003] 1. The steel bar is passed through the semi-cylindrical steel hoop, and the steel bar is semi-circular. The steel bar in this semi-circular part is subject to shear force when it is stressed. Generally speaking, the tensile strength of steel bars is much greater than the shear strength. Therefore, the data when the steel bar breaks cannot represent the real test results, which affects the stability of the test results.

[0004] 2. When the steel bars pass around the semi-cylindrical steel hoop, due to the rigidity of the steel bars, it cannot be guaranteed that each steel bar is in contact with the semi-circular surface of the steel hoop. Therefore, during the pressurization process, the steel bars that are in contact will be stressed first, while the steel bars that are not in contact will not be stressed. In this way, the steel bars that are stressed first will break first, resulting in test failure and need to be retested. In addition, the broken steel bars will cause safety problems.

[0005] 3. Due to the limitations of the equipment structure, some of the steel bars at both ends of the test pile cannot bypass the steel hoops to participate in the test. As a result, it is impossible for all the steel bars in the test pile to participate in the test. The number of stressed steel bars is insufficient, and the design value of the pull-out bearing capacity cannot be reached, and the bearing capacity test of the pile cannot be carried out.

[0006] It is therefore necessary to design a vertical static load pull-out pile cap device to replace the pull-out test anchor to solve the above problems.

[0007] When using the equipment for implementing pull-out detection using the pull-out resistance pile cap device, it is necessary to weld a blocking and limiting component (baffle or block) on the test pile reinforcement to transmit the pull-out driving force thereto. In the existing pull-out resistance pile cap device, the components on which the test pile reinforcement is plugged and matched and abutted against the blocking and limiting component for transmitting the pull-out detection torque are mostly directly welded and fixed to the outer retaining frame of the device or the main body of the device for integrated installation. As a result, after the detection is completed, the blocking and limiting component must be cut and removed from the test pile reinforcement before the pull-out resistance pile cap device can be extracted and disassembled as a whole. It takes a lot of time to cut the numerous blocking and limiting components, which will occupy the time for the subsequent reuse of the pull-out resistance pile cap device, indirectly reducing the use efficiency of the pull-out resistance pile cap device. Utility Model Content

[0008] In view of this, the utility model provides a vertical static load anti-pullout pile cap device to solve the problem of poor use efficiency of the anti-pullout pile cap device.

[0009] The technical solution proposed by the utility model is: a vertical static load anti-pulling pile cap device, specifically comprising: a rectangular frame and a test pile, the test pile is located at the bottom center of the rectangular frame, and a circle of anti-pulling steel bars is cast and fixed around the test pile;

[0010] A row of cross bracing panels is inserted through the inside of the rectangular enclosure, and a row of cross bracing panels and the rectangular enclosure are plugged together to form a complete pile cap; a synchronous plate is welded to the left end of a row of cross bracing panels; two cross bracing load-bearing plates are symmetrically welded on the front and rear sides of the top of the rectangular enclosure, and a long slide groove is opened through the cross bracing load-bearing plates, and four locking bolts are slidably hoisted on the two long slide grooves, and the four locking bolts are arranged in groups of two corresponding to the front and rear, and locking nuts are screwed and installed on the bottom of the locking bolts; an auxiliary load-bearing plate is slidably installed on each group of locking bolts, and a long track groove is opened on the auxiliary load-bearing plate, and the long track groove is slidably inserted with the locking bolt; the auxiliary load-bearing plate is pressed tightly against the bottom end of a row of cross bracing panels through the locking nut;

[0011] A row of long spacing grooves between a circle of anti-pullout steel bars and a row of cross bracing railings are inserted and matched, and a limit plate is welded on the top part of a circle of anti-pullout steel bars. When a row of cross bracing railings slide upward with the rectangular frame, they come into contact with the limit plate.

[0012] Furthermore,

[0013] Two L-shaped longitudinal support plates are symmetrically welded at the left and right ends of the bottom of the rectangular frame, and a row of positioning ear blocks are welded on the top of the longitudinal support plates, and the row of positioning ear blocks are arranged in groups of two.

[0014] Furthermore,

[0015] A fixed ear block is welded to the right end of each row of the cross bracing railings, and the fixed ear blocks in a row are arranged in groups of two, and multiple groups of positioning ear blocks are correspondingly plugged and matched with multiple groups of fixed ear blocks.

[0016] Furthermore,

[0017] An insert shaft is longitudinally penetrated through a row of the positioning ear blocks. When multiple groups of positioning ear blocks are plugged and matched with multiple groups of fixed ear blocks, the insert shaft penetrates and plugs and matches with a row of fixed ear blocks.

[0018] Furthermore,

[0019] A U-shaped mounting frame is welded at the rear end of the right side plate of the rectangular enclosure frame, an L-shaped plug rod is mounted on the U-shaped mounting frame through a spring push-pull sliding mechanism, and the horizontal portion of the L-shaped plug rod is plugged and matched with the tail end of the plug shaft;

[0020] A limiting disc is welded on the head end of the insert shaft.

[0021] Furthermore,

[0022] Two oil cylinder support members are symmetrically arranged at the bottom of the rectangular frame, located on the left and right sides of the test pile.

[0023] Furthermore,

[0024] Four oil cylinders are symmetrically arranged between the two oil cylinder supporting members and the two longitudinal supporting plates.

[0025] The utility model provides a vertical static load anti-pulling pile cap device, which has the following beneficial effects:

[0026] When the utility model is in use, after a row of cross bracing railings and the rectangular frame are extracted and disassembled, they are separated from a circle of anti-pullout steel bars and a circle of limiting plates, and the internal space of the rectangular frame is completely vacated, which allows the rectangular frame and the anti-pullout pile cap device to be directly lifted up and disassembled as a whole. Compared with the prior art, the trouble of cutting and removing a circle of limiting plates and a circle of anti-pullout steel bars due to avoiding the blocking and limiting of a circle of limiting plates is eliminated, and the time of subsequent reuse of the anti-pullout pile cap device is avoided due to the waste of cutting operation, which helps to improve the disassembly and use efficiency of the anti-pullout pile cap device.

[0027] In addition, two auxiliary load-bearing plates are against the bottom of a row of cross-bracing guardrails, which can provide auxiliary load-bearing support for the row of cross-bracing guardrails, and share the downward reverse thrust applied to the row of cross-bracing guardrails by a circle of limit plates during the test, thereby improving the flexural and bending resistance of the row of cross-bracing guardrails and reducing the probability of the row of cross-bracing guardrails being bent or broken by being pushed, so that the row of cross-bracing guardrails can take into account the structural strength and flexural and bending resistance while ensuring that they can be slidably and conveniently disassembled.

[0028] In addition, the auxiliary bearing plate can be adjusted with multiple degrees of freedom through two locking bolts on it, such as left and right sliding and left and right swinging, so that the auxiliary bearing plate can be adjusted to any angle and position at the bottom of a row of cross bracing railings, and can be adapted and inserted into the gaps between a circle of tensile steel bars with different numbers and different distribution positions. It is flexible to use and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0030] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0031] In the attached picture:

[0032] Figure 1 The overall front side structural schematic diagram of the utility model is shown;

[0033] Figure 2 The overall rear side structure schematic diagram of the utility model is shown;

[0034] Figure 3 The overall front bottom side structure schematic diagram of the utility model is shown;

[0035] Figure 4 The schematic diagram of the structure of the horizontal bracing railing of the utility model is shown;

[0036] Figure 5 A schematic diagram of the bottom structure of a rectangular enclosure frame of the present invention is shown;

[0037] Figure 6 The utility model is shown Figure 4 The enlarged structural diagram of part A in the middle;

[0038] Reference numerals list

[0039] 1. Rectangular frame; 101. Horizontal support plate; 102. Vertical support plate; 1021. Positioning ear block; 103. Insertion shaft; 104. L-shaped insertion rod; 105. U-shaped installation frame;

[0040] 2. Horizontal support railing; 201. Fixed ear block; 202. Synchronous plate;

[0041] 3. Locking bolt; 301. Limiting ring; 302. Locking nut;

[0042] 4. Auxiliary bearing plate;

[0043] 5. Oil cylinder;

[0044] 6. Cylinder support;

[0045] 7. Test piles; 701. Tensile reinforcement; 702. Limiting plates. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] Please refer to Figures 1 to 6 ;

[0048] Embodiment 1:

[0049] The utility model proposes a vertical static load anti-pulling pile cap device, comprising: a rectangular enclosure 1, a horizontal bracing load-bearing plate 101, a longitudinal bracing support plate 102, a positioning ear block 1021, an insertion shaft 103, an L-shaped insertion rod 104, a U-shaped installation frame 105, a horizontal bracing railing 2, a fixed ear block 201, a synchronous plate 202, a locking bolt 3, a limiting ring 301, a locking nut 302, an auxiliary load-bearing plate 4, an oil cylinder 5, an oil cylinder support 6, a test pile 7, an anti-pulling steel bar 701, and a limiting plate 702. The test pile 7 is located at the bottom center of the rectangular enclosure 1, and a circle of anti-pulling steel bars 701 are cast and fixed around the test pile 7;

[0050] Among them, a row of transverse bracing railings 2 is inserted through the inside of the rectangular enclosure 1, and the row of transverse bracing railings 2 and the rectangular enclosure 1 are plugged together to form a complete pile cap; a synchronous plate 202 is welded to the left end of a row of transverse bracing railings 2; two transverse bracing load-bearing plates 101 are symmetrically welded on the front and back sides of the top of the rectangular enclosure 1, and a long slide groove is opened through the transverse bracing load-bearing plates 101, and four locking bolts 3 are slidably hoisted on the two long slide grooves, and the four locking bolts 3 are arranged in groups of two corresponding to the front and back, and locking nuts 302 are screwed and installed at the bottom of the locking bolts 3; an auxiliary load-bearing plate 4 is slidably installed on each group of locking bolts 3, and a long track groove is opened on the auxiliary load-bearing plate 4, and the long track groove is slidably inserted with the locking bolts 3; the auxiliary load-bearing plate 4 is pressed against the bottom end of a row of transverse bracing railings 2 by the locking nuts 302;

[0051] A row of long spacing grooves between a circle of pull-out steel bars 701 and a row of transverse bracing railings 2 are inserted and matched, and the top part of a circle of pull-out steel bars 701 is welded with a limit plate 702. When a row of transverse bracing railings 2 slide upward following the rectangular frame 1, they come into contact with the limit plate 702. The pull-out pile cap device transmits power through a row of transverse bracing railings 2 and a circle of limit plates 702 and a circle of pull-out steel bars 701. Compared with traditional pull-out test anchors, there is no need to pass the head end of a circle of pull-out steel bars 701 around the outer circumference of the semi-cylindrical steel hoop, bend it into a semicircle, and then connect it to a circle of pull-out steel bars. The main body of the steel bar 701 is welded and fixed to complete the connection between the pull-out steel bar 701 and the pull-out test anchor, so as to avoid the situation that the semicircular part of the pull-out steel bar 701 needs to bear additional shear force, which is conducive to ensuring the accuracy of the pull-out test results, avoiding the situation that the semicircular part of the pull-out steel bar 701 cannot fit tightly with the steel hoop, the force is uneven, and the pull-out steel bar 701 is easy to be pulled off first, which helps to ensure the success rate of the pull-out test and reduce the safety hazards caused by the breakage of the pull-out steel bar 701, and avoid the situation that the pull-out steel bar 701 cannot completely bypass the steel hoop to participate in the test, which helps to ensure the effectiveness of the pull-out test;

[0052] The row of cross bracing railings 2 is used as a component for transmitting the push test force of the oil cylinder 5 to the circle of pull-out steel bars 701. It is slidably and detachably installed with the rectangular enclosure 1. After the inspection is completed, the insertion shaft 103 is separated from the row of fixed ear blocks 201, which can be loosened and removed from the inside of the rectangular enclosure 1. After the row of cross bracing railings 2 is removed from the rectangular enclosure 1, it is separated from the circle of pull-out steel bars 701 and the circle of limit plates 702, and the internal space of the rectangular enclosure 1 is completely vacated. This can directly lift and disassemble the rectangular enclosure 1 and the pull-out pile cap device as a whole. Compared with the prior art, it saves the trouble of cutting and removing the circle of limit plates 702 and the circle of pull-out steel bars 701 due to avoiding the blocking and limiting of the circle of limit plates 702, avoids the waste of time for the subsequent reuse of the pull-out pile cap device due to the cutting operation, and helps to improve the disassembly and use efficiency of the pull-out pile cap device.

[0053] The two auxiliary load-bearing plates 4 are against the bottom of a row of transverse bracing railings 2, and can provide auxiliary load-bearing support for a row of transverse bracing railings 2, and share the downward thrust applied to a row of transverse bracing railings 2 by a circle of limit plates 702 during the test, thereby improving the bending and flexural resistance of a row of transverse bracing railings 2, and reducing the probability of a row of transverse bracing railings 2 being bent or broken by pushing, so that a row of transverse bracing railings 2 can take into account both structural strength and bending and flexural resistance under the premise of ensuring that they can be slidably and conveniently disassembled;

[0054] The four locking bolts 3 serve as components for positioning and installing the two auxiliary bearing plates 4. The bottom ends are slidably matched with the two long slide grooves, and the top ends are slidably matched with the two long track grooves on the two auxiliary bearing plates 4. This allows the auxiliary bearing plates 4 to slide left and right and swing left and right in a multi-degree-of-freedom manner through the two locking bolts 3 thereon, so that the auxiliary bearing plates 4 can be adjusted to any angle and position at the bottom end of a row of cross bracing railings 2, and can be adapted and inserted into the gaps between a circle of tensile steel bars 701 with different numbers and different distribution positions. It is flexible to use and has a wide range of applications.

[0055] Based on the first embodiment, the second embodiment:

[0056] Two L-shaped longitudinal support plates 102 are symmetrically welded at the left and right ends of the bottom of the rectangular frame 1. A row of positioning ear blocks 1021 are welded at the top of the longitudinal support plates 102. The row of positioning ear blocks 1021 are arranged in groups of two.

[0057] Preferably,

[0058] A fixed ear block 201 is welded to the right end of a row of cross-bracing railings 2. The fixed ear blocks 201 in a row are arranged in groups of two. Multiple groups of positioning ear blocks 1021 are plugged into and matched with multiple groups of fixed ear blocks 201. A row of cross-bracing railings 2 is used to plug and position a row of cross-bracing railings 2 in the rectangular frame 1.

[0059] Preferably,

[0060] An insertion shaft 103 is longitudinally penetrated through a row of positioning ear blocks 1021 . When multiple groups of positioning ear blocks 1021 are plugged into and matched with multiple groups of fixed ear blocks 201 , the insertion shaft 103 penetrates and plugs into and matches with a row of fixed ear blocks 201 .

[0061] Preferably,

[0062] A U-shaped mounting frame 105 is welded to the rear end of the right side plate of the rectangular frame 1, and an L-shaped plug rod 104 is installed on the U-shaped mounting frame 105 by means of a spring push and slide. The horizontal part of the L-shaped plug rod 104 is plugged into and matched with the tail end of the plug shaft 103. The L-shaped plug rod 104 is used to insert and position the plug shaft 103 in a usage state where it is inserted and fixed with a row of fixed ear blocks 201.

[0063] A limiting disc is welded to the head end of the insertion shaft 103 .

[0064] Preferably,

[0065] Two oil cylinder support members 6 are symmetrically arranged at the left and right sides of the test pile 7 at the bottom of the rectangular enclosure 1. The oil cylinder support members 6 can be pre-cast beams or walls, or metal brackets installed on site.

[0066] Preferably,

[0067] Four oil cylinders 5 are symmetrically arranged between the two oil cylinder support members 6 and the two longitudinal support plates 102 .

[0068] Working principle: When in use, the four oil cylinders 5 output an upward thrust for testing the pull-out resistance of the pull-out steel bars 701. The two oil cylinders 5 push the two longitudinal support plates 102 and the pull-out pile cap device upward through the thrust output by them. A row of transverse support plates 2 follows the rectangular frame 1 to slide upward and come into contact with the limit plates 702, and transfer the thrust of the two oil cylinder support members 6 to a circle of pull-out steel bars 701. After the two oil cylinder support members 6 are loaded with the preset standard thrust, the connection between the circle of pull-out steel bars 701 and the test pile 7 is observed. If a circle of pull-out steel bars 701 is pulled out of the test pile 7, the pull-out resistance of the circle of pull-out steel bars 701 is judged to be unqualified, otherwise it is qualified.

[0069] In this article, there are a few points to note:

[0070] 1. The drawings of the embodiments of the present utility model only relate to the structures related to the embodiments of the present utility model, and other structures may refer to the usual designs.

[0071] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0072] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vertical static load anti-pullout pile cap device, comprising: A rectangular enclosure (1) and a test pile (7), wherein the test pile (7) is located at the bottom center of the rectangular enclosure (1), and a circle of tensile steel bars (701) is cast and fixed around the test pile (7); The invention is characterized in that a row of transverse bracing panels (2) is inserted through the inside of the rectangular enclosure (1), and the row of transverse bracing panels (2) and the rectangular enclosure (1) are inserted together to form a complete pile cap; a synchronization plate (202) is welded to the left end of the row of transverse bracing panels (2); two transverse bracing load-bearing plates (101) are symmetrically welded on the front and rear sides of the top of the rectangular enclosure (1), and a long slide groove is opened through the transverse bracing load-bearing plates (101), and the two long slide grooves are slidingly hoisted with four locking devices. Bolts (3), four locking bolts (3) are arranged in groups of two corresponding to each other in the front and back, and locking nuts (302) are screwed and installed at the bottom of the locking bolts (3); each group of the locking bolts (3) is slidably installed with an auxiliary bearing plate (4), and a long track groove is opened on the auxiliary bearing plate (4), and the long track groove is slidably inserted and matched with the locking bolts (3); the auxiliary bearing plate (4) is pressed against the bottom end of a row of cross bracing railings (2) through the locking nuts (302); A row of long spacing grooves between a circle of the anti-pulling steel bars (701) and a row of transverse bracing railings (2) are inserted and matched, and a limiting plate (702) is welded and mounted on the top portion of each circle of the anti-pulling steel bars (701), and when the row of transverse bracing railings (2) slides upward following the rectangular frame (1), they come into contact with the limiting plate (702).

2. A vertical static load anti-pullout pile cap device according to claim 1, characterized in that: Two L-shaped longitudinal support plates (102) are symmetrically welded at the left and right ends of the bottom of the rectangular enclosure (1), and a row of positioning ear blocks (1021) are welded at the top of the longitudinal support plates (102), and the row of positioning ear blocks (1021) are arranged in groups of two.

3. A vertical static load anti-pullout pile cap device according to claim 2, characterized in that: A fixed ear block (201) is welded to the right end of each row of the cross bracing railings (2), and the fixed ear blocks (201) in a row are arranged in groups of two, and the multiple groups of positioning ear blocks (1021) are correspondingly plugged into the multiple groups of fixed ear blocks (201).

4. A vertical static load anti-uplift pile cap device according to claim 3, characterized in that: An insertion shaft (103) is longitudinally inserted through a row of the positioning ear blocks (1021). When multiple groups of positioning ear blocks (1021) are plugged into multiple groups of fixed ear blocks (201), the insertion shaft (103) and a row of fixed ear blocks (201) are inserted into each other.

5. A vertical static load anti-uplift pile cap device according to claim 1, characterized in that: A U-shaped installation frame (105) is welded to the rear end of the right side plate of the rectangular enclosure (1), an L-shaped insertion rod (104) is installed on the U-shaped installation frame (105) by means of a spring push-pull sliding mechanism, and the horizontal portion of the L-shaped insertion rod (104) is plug-fitted with the rear end of the insertion shaft (103); A limiting disc is welded to the head end of the insertion shaft (103).

6. A vertical static load anti-uplift pile cap device according to claim 1, characterized in that: Two oil cylinder support members (6) are symmetrically arranged at the bottom of the rectangular enclosure (1) on the left and right sides of the test pile (7).

7. A vertical static load anti-uplift pile cap device according to claim 6, characterized in that: Four oil cylinders (5) are symmetrically arranged between the two oil cylinder support members (6) and the two longitudinal support plates (102).

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