Pile foundation static load test system

Abstract

The utility model relates to a pile foundation static load test system, and relates to the technical field of pile foundation static load detection, the pile foundation static load test system comprises a jack, a bearing wall, a reaction frame, a bearing plate, a plurality of U-shaped first balancing weights and a plurality of second balancing weights, the plurality of first balancing weights are laid on the bearing plate side by side, and a U-shaped first mounting groove is jointly formed; the second balancing weights are I-shaped and are arranged in multiple layers, the number of the second balancing weights in each layer is multiple, the multiple second balancing weights located on the bottom layer are laid in the first mounting groove side by side and all clamped on the multiple first balancing weights, and an opening of each first balancing weight is clamped on the multiple second balancing weights on the bottom layer; all the second balancing weights on the bottom layer jointly form a U-shaped second mounting groove, and the second balancing weights on the other layers are clamped in the second mounting grooves of the second balancing weights on the next layer. The weight balancing device has the effect that stacked weight balancing blocks are not prone to slipping off.

Description

Technical Field

[0001] This application relates to the technical field of static load testing of pile foundations, and in particular to a static load testing system for pile foundations. Background Technology

[0002] Static load testing of pile foundations is an important part of engineering inspection. To make the test results more intuitive, the surcharge method is often used for testing.

[0003] Currently, the surcharge method involves installing horizontally supported secondary beams on the main beams, then laying load-bearing plates on the secondary beams to assemble a load-bearing platform. Counterweights are then stacked on the load-bearing plates to form a pressure carrier. Jacks are placed between the pressure carrier and the pile foundation. The jacks apply force to the pressure carrier, and the pressure carrier applies a counter-load to the jacks, thus enabling static load testing of the pile foundation.

[0004] Counterweights are usually precast concrete blocks. In order for the pressure carrier to apply sufficient counter-load, several layers of counterweights usually need to be stacked flat. Counterweights are prone to slipping during stacking or during force testing, which can easily lead to safety accidents. Utility Model Content

[0005] To prevent the stacked counterweights from slipping, this application provides a static load testing system for pile foundations.

[0006] This application provides a static load testing system for pile foundations, which adopts the following technical solution:

[0007] A static load testing system for pile foundations, comprising:

[0008] Jacks are installed on the pile foundation;

[0009] There are two load-bearing walls, symmetrically arranged on both sides of the jack, and the load-bearing walls are connected to the ground;

[0010] The reaction frame is erected on two load-bearing walls and abuts against the movable end of the jack;

[0011] The load-bearing plate is installed on the reaction frame;

[0012] The first counterweight is U-shaped and there are multiple of them. The multiple first counterweights are laid side by side on the support plate. The opening of the first counterweight is vertically upward, and all the first counterweights together form a U-shaped first mounting groove.

[0013] The second counterweight is I-shaped and has multiple layers. Each layer has multiple second counterweights. The two openings of the second counterweights are the first opening and the second opening, respectively. The multiple second counterweights at the bottom layer are laid side by side in the first mounting groove. The first opening of each second counterweight at the bottom layer is engaged with multiple first counterweights. The opening of each first counterweight is engaged with multiple second counterweights at the bottom layer. The second openings of all the second counterweights at the bottom layer together form a U-shaped second mounting groove. The first openings of the second counterweights in the remaining layers are engaged in the second mounting grooves of the second counterweights in the next layer.

[0014] By adopting the above technical solution, multiple first counterweights are laid side by side on a load-bearing platform jointly constructed by a load-bearing wall, a reaction frame, and a load-bearing plate. Multiple layers of second counterweights are installed layer by layer. The second counterweight at the bottom layer is locked in the first installation groove, and the second counterweights of each other in the next layer are locked in the second installation groove of the next layer. The first counterweights are locked to the second counterweights at the bottom layer, and the second counterweights in adjacent layers are also locked to each other. This makes the pressure carrier formed by the first and second counterweights less likely to slip under the action of mutual locking force, thus making it less likely for the stacked counterweights to slip.

[0015] Optionally, four angle steels are connected to the bearing plate. The four angle steels are located at the four side edges of the community formed by laying all the first counterweights, and the two side plates of the angle steels abut against the first counterweights.

[0016] By adopting the above technical solution, the four angle steels can prevent the two outermost first counterweights from sliding relative to the bearing plate. Under the locking action of the bottom second counterweights on all the first counterweights, all the first counterweights are not easy to slide relative to the bearing plate, so that the first counterweights can be stably placed on the bearing plate.

[0017] Optionally, it also includes a reinforcement assembly, which includes a reinforcement plate, a first reinforcement ring, a second reinforcement ring, and steel wire ropes. The reinforcement plate is erected on all the second counterweights located at the top layer. Multiple first reinforcement rings are arranged along the circumference of the reinforcement plate and are all connected to the reinforcement plate. Multiple second reinforcement rings are arranged and are all connected to the bearing plate. The second reinforcement rings correspond one-to-one with the first reinforcement rings. Multiple steel wire ropes are arranged and correspond one-to-one with the first reinforcement rings. The steel wire ropes are threaded through the first and second reinforcement rings. Both ends of the steel wire ropes are connected to rope clamps, which fix the two ends of the steel wire ropes. The steel wire ropes are in a tensioned state.

[0018] By adopting the above technical solution, the reinforcement plate is tightened on the second counterweight at the top layer by steel wire rope, which improves the overall integrity of the pressure carrier formed by the first and second counterweights, reduces the possibility of the second counterweight slipping off locally, and further improves the safety of the test.

[0019] Optionally, multiple padlocks are provided between the bearing plate and the reaction frame. The lock body of the padlock is connected to the reaction frame, and the hook body of the padlock is connected to the bearing plate. The padlocks are used to make the bearing plate and the reaction frame detachably connected.

[0020] By adopting the above technical solution, using padlocks and hooks to connect the bearing plate and the reaction frame, the bearing plate can be quickly installed and fixed on the reaction frame, improving the efficiency of the test system setup.

[0021] Optionally, the reaction frame includes a main beam and secondary beams. The main beam is arranged parallel to the load-bearing wall and its middle part abuts against the movable end of the jack. Multiple secondary beams are provided and are all vertically arranged on the top of the main beam. The multiple secondary beams are symmetrically arranged on both sides of the jack, and the two ends of the secondary beams abut against two load-bearing walls respectively. The secondary beams are detachably connected to the main beam.

[0022] By adopting the above technical solution, multiple secondary beams are erected on the load-bearing wall, forming a stable support for the first and second counterweights. The main beam abuts against the jack, so that the entire reaction frame can transfer the reaction force to the jack under stable support. Thus, the main beam and secondary beams, which are perpendicular to each other, can transfer the reaction force to the jack while bearing the first and second counterweights. Since the main beam and secondary beams are detachably connected, the reaction frame is easy to assemble.

[0023] Optionally, a dovetail strip is connected to the main beam, and the dovetail strip is slidably inserted into a dovetail groove opened on each secondary beam.

[0024] By adopting the above technical solution, the dovetail strip on the main beam is slidably inserted into the dovetail groove opened on each secondary beam, which makes it easy and quick to install the secondary beam onto the main beam, and makes it difficult for the secondary beam to move relative to the main beam in the vertical direction, thus fixing the secondary beam to the main beam in the vertical direction.

[0025] Optionally, a fixing plate is provided on both sides of the dovetail groove. The fixing plate is connected to the secondary beam, and a fixing bolt is threaded through the fixing plate. The fixing bolt is threaded into the fixing bolt hole opened on the main beam.

[0026] By adopting the above technical solution, when the secondary beam slides to the installation position along the dovetail strip relative to the main beam, the fixing bolt can be turned so that the fixing bolt thread is connected in the fixing bolt hole. Since the fixing bolt is also threaded through the fixing plate, it is difficult for the secondary beam and the main beam to move relative to each other in the horizontal direction, so that the secondary beam is fixed to the main beam in the horizontal direction.

[0027] Optionally, lifting grooves are provided on the open side of the first counterweight and the second open side of the second counterweight, and lifting rings are connected to the bottom of the lifting grooves.

[0028] By adopting the above technical solution, the lifting ring and the crane hook are connected by a lifting device, which makes it easy to lift the first counterweight and the second counterweight in a stable and reliable manner, and makes it easy to lift the first counterweight and the second counterweight. Since the lifting ring is located in the lifting groove, the lifting ring is less likely to affect the stacking and installation of the first counterweight and the second counterweight.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. By setting a U-shaped first counterweight and an I-shaped second counterweight, the pressure carrier formed by the first and second counterweights can be less likely to slip under the mutual clamping force, thus making it less likely for the stacked counterweights to slip.

[0031] 2. By setting up a reinforcing plate, a first reinforcing ring, a second reinforcing ring, a wire rope, and a rope clamp, the pressure carrier formed by the first counterweight and the second counterweight is less likely to slip.

[0032] 3. By setting lifting rings in the lifting slots on the first and second counterweights, the first and second counterweights can be easily lifted. Attached Figure Description

[0033] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0034] Figure 2 This is an exploded view of the installation structure of the first and second counterweights.

[0035] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0036] Figure 4 yes Figure 1 Enlarged view at point B;

[0037] Figure 5 This is an exploded view of the reaction frame.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Jack; 2. Load-bearing wall; 3. Reaction frame; 31. Main beam; 311. Dovetail strip; 312. Fixing bolt hole; 32. Secondary beam; 321. Dovetail groove; 322. Fixing plate; 323. Fixing bolt; 4. Bearing plate; 41. Angle steel; 5. First counterweight; 51. First mounting groove; 52. Lifting groove; 53. Lifting ring; 6. Second counterweight; 61. First opening; 62. Second opening; 63. Second mounting groove; 7. Reinforcing components; 71. Reinforcing plate; 72. First reinforcing ring; 73. Second reinforcing ring; 74. Wire rope; 75. Rope clamp; 8. Padlock buckle. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0041] This application discloses a static load testing system for pile foundations. (Refer to...) Figure 1 A static load test system for pile foundations includes a jack 1, a load-bearing wall 2, a reaction frame 3, a bearing plate 4, a first counterweight 5, and a second counterweight 6.

[0042] Jack 1 is fixedly installed on the pile foundation. Two load-bearing walls 2 are provided, symmetrically arranged on both sides of jack 1, and fixed to the ground. The reaction frame 3 is erected on the two load-bearing walls 2 and abuts against the movable end of jack 1. The bearing plate 4 is installed on the reaction frame 3. The load-bearing walls 2, reaction frame 3, and bearing plate 4 together form a load-bearing platform.

[0043] Reference Figure 2 The first counterweight 5 is U-shaped and there are multiple first counterweights 5 laid side by side on the bearing plate 4. The opening of the first counterweight 5 is vertically upward, and all the first counterweights 5 together form a U-shaped first mounting groove 51.

[0044] The second counterweight 6 is I-shaped and has multiple layers. Each layer has multiple second counterweights 6. The two openings of the second counterweight 6 are the first opening 61 and the second opening 62, respectively. The multiple second counterweights 6 at the bottom layer are laid side by side in the first mounting groove 51. The first opening 61 of each second counterweight 6 at the bottom layer is engaged with multiple first counterweights 5. The opening of each first counterweight 5 is engaged with multiple second counterweights 6 at the bottom layer. The second openings 62 of all the second counterweights 6 at the bottom layer together form a U-shaped second mounting groove 63. The first openings 61 of the second counterweights 6 at the remaining layers are engaged in the second mounting grooves 63 of the second counterweights 6 at the next layer.

[0045] In use, multiple first counterweights 5 are laid side by side on the load-bearing platform jointly constructed by the load-bearing wall 2, the reaction frame 3, and the load-bearing plate 4. The multiple layers of second counterweights 6 are installed layer by layer. The second counterweight 6 at the bottom layer is locked in the first installation groove 51, and the second counterweights 6 at each of the remaining layers are locked in the second installation groove 63 of the second counterweight 6 at the next layer. The first counterweights 5 and the second counterweights 6 at the bottom layer are locked together, and the second counterweights 6 at adjacent layers are also locked together. This makes the pressure carrier formed by the first counterweights 5 and the second counterweights 6 less likely to slip under the action of mutual locking force, thus making it less likely for the stacked counterweights to slip.

[0046] Reference Figure 2In order to prevent the first counterweight 5 from sliding relative to the bearing plate 4, four angle steels 41 are fixedly connected to the bearing plate 4. The four angle steels 41 are located at the four side edges of the community formed by all the first counterweights 5, and the two side plates of the angle steels 41 abut against the first counterweight 5.

[0047] The four angle steels 41 prevent the two outermost first counterweights 5 from sliding relative to the bearing plate 4. The second counterweight 6 at the bottom layer also helps to lock all the first counterweights 5 in place, making it difficult for any of the first counterweights 5 to slide relative to the bearing plate 4. This allows the first counterweights 5 to be stably placed on the bearing plate 4.

[0048] Reference Figure 1 To further enhance the installation stability of the first counterweight 5 and the second counterweight 6 on the bearing plate 4, a pile foundation static load test system also includes a reinforcement component 7, which includes a reinforcement plate 71, a first reinforcement ring 72, a second reinforcement ring 73, and a steel wire rope 74.

[0049] Reference Figure 1 and Figure 3 The reinforcing plate 71 is erected on all the second counterweights 6 located on the top layer. Multiple first reinforcing rings 72 are evenly arranged along the circumference of the reinforcing plate 71 and are all fixed to the reinforcing plate 71. Multiple second reinforcing rings 73 are arranged and are all fixed to the bearing plate 4. The second reinforcing rings 73 correspond one-to-one with the first reinforcing rings 72. Multiple steel wire ropes 74 are arranged and correspond one-to-one with the first reinforcing rings 72. The steel wire ropes 74 are threaded through the first reinforcing rings 72 and the second reinforcing rings 73. Both ends of the steel wire ropes 74 are connected to rope clamps 75. The rope clamps 75 are fixedly connected to the two ends of the steel wire ropes 74, and the steel wire ropes 74 are in a tensioned state.

[0050] By tightening the reinforcing plate 71 onto the second counterweight 6 at the top layer with the steel wire rope 74, the overall integrity of the pressure carrier formed by the first counterweight 5 and the second counterweight 6 is improved, reducing the possibility of the second counterweight 6 slipping off locally and further improving the safety of the test.

[0051] Reference Figure 1 and Figure 4 In order to facilitate the quick installation of the bearing plate 4 on the reaction frame 3, multiple padlocks 8 are provided between the bearing plate 4 and the reaction frame 3. The lock body of the padlock 8 is fixed to the reaction frame 3, and the hook body of the padlock 8 is fixed to the bearing plate 4. The padlocks 8 are used to make the bearing plate 4 and the reaction frame 3 detachably connected.

[0052] Using padlocks and latches 8 to connect the bearing plate 4 and the reaction frame 3 allows the bearing plate 4 to be quickly installed and fixed on the reaction frame 3, improving the efficiency of the test system setup.

[0053] Reference Figure 1In order to facilitate the transfer of the counterforce generated by the first counterweight 5 and the second counterweight 6 on the bearing plate 4 to the jack 1, the reaction frame 3 includes a main beam 31 and a secondary beam 32. The main beam 31 is set parallel to the bearing wall 2 and its middle part abuts against the movable end of the jack 1. Multiple secondary beams 32 are provided and are all set vertically on the top of the main beam 31. The multiple secondary beams 32 are symmetrically arranged on both sides of the jack 1. The two ends of the secondary beams 32 abut against the two bearing walls 2 respectively. The secondary beams 32 are detachably connected to the main beam 31.

[0054] Multiple secondary beams 32 are erected on the load-bearing wall 2, forming a stable support for the first counterweight 5 and the second counterweight 6. The main beam 31 abuts against the jack 1, so that the entire reaction frame 3 can transfer the reaction force to the jack 1 under stable support. Thus, the main beam 31 and the secondary beams 32, which are perpendicular to each other, can transfer the reaction force to the jack 1 while bearing the first counterweight 5 and the second counterweight 6. Since the main beam 31 and the secondary beams 32 are detachably connected, the reaction frame 3 is easy to assemble.

[0055] Furthermore, referring to Figure 5 A dovetail strip 311 is fixedly connected to the main beam 31, and the dovetail strip 311 is slidably inserted into the dovetail groove 321 opened on each secondary beam 32.

[0056] The dovetail strips 311 on the main beam 31 are slidably inserted into the dovetail grooves 321 opened on each secondary beam 32, making it easy and quick to install the secondary beam 32 onto the main beam 31, and making it difficult for the secondary beam 32 to move relative to the main beam 31 in the vertical direction, so that the secondary beam 32 is fixed to the main beam 31 in the vertical direction.

[0057] Furthermore, referring to Figure 5 Both sides of the dovetail groove 321 are provided with fixing plates 322, which are fixed to the secondary beam 32. Fixing bolts 323 are threaded through the fixing plates 322 and are threaded into the fixing bolt holes 312 opened on the main beam 31.

[0058] When the secondary beam 32 slides to the installation position relative to the main beam 31 along the dovetail strip 311, the fixing bolt 323 can be turned so that the fixing bolt 323 is threaded into the fixing bolt hole 312. Since the fixing bolt 323 is also threaded through the fixing plate 322, it is difficult for the secondary beam 32 and the main beam 31 to move relative to each other in the horizontal direction, so that the secondary beam 32 is fixed to the main beam 31 in the horizontal direction.

[0059] Reference Figure 2 In order to facilitate the lifting of the first counterweight 5 and the second counterweight 6, lifting grooves 52 are provided on the open side of the first counterweight 5 and the second opening 62 side of the second counterweight 6, and lifting rings 53 are fixedly connected to the bottom of the lifting grooves 52.

[0060] The lifting ring 53 is connected to the crane hook by the lifting device, so that the first counterweight 5 and the second counterweight 6 can be lifted stably and reliably, and the first counterweight 5 and the second counterweight 6 can be lifted easily; since the lifting ring 53 is located in the lifting groove 52, the lifting ring 53 is less likely to affect the stacking and installation of the first counterweight 5 and the second counterweight 6.

[0061] The implementation principle of the pile foundation static load test system in this application embodiment is as follows: In use, a jack 1, a load-bearing wall 2, a reaction frame 3, and a bearing plate 4 are installed. Then, a crane is used to lift the first counterweight block 5 and the second counterweight block 6, so that the opening of the first counterweight block 5 is facing upward and laid on the bearing plate 4. The second counterweight block 6 at the bottom layer is locked in the first mounting groove 51 formed by the first counterweight block 5, and the second counterweight blocks 6 of the remaining layers are locked in the second mounting groove 63 formed by the second counterweight blocks 6 of the next layer. Through the locking action of the first mounting groove 51 and the second mounting groove 63, the stacked first counterweight block 5 and the second counterweight block 6 are not prone to slippage.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pile static load test system, characterized by, The utility model relates to a jack-up platform, which comprises: a jack (1) mounted on a pile foundation; two force-bearing walls (2) symmetrically arranged on both sides of the jack (1) and connected to the ground; a counterforce frame (3) arranged on the two force-bearing walls (2) and abutting against the movable end of the jack (1); a bearing plate (4) mounted on the counterforce frame (3); a plurality of first counterweights (5) in the shape of U, which are arranged side by side on the bearing plate (4) with the openings vertically upward, and together form a U-shaped first mounting groove (51); a plurality of second counterweights (6) in the shape of H, which are arranged in multiple layers, each layer comprising a plurality of second counterweights (6), the two openings of each second counterweight (6) being a first opening (61) and a second opening (62), the plurality of second counterweights (6) in the bottom layer being arranged side by side in the first mounting groove (51), the first opening (61) of each second counterweight (6) in the bottom layer being clamped on the plurality of first counterweights (5), the opening of each first counterweight (5) being clamped on the plurality of second counterweights (6) in the bottom layer, and the second openings (62) of all the second counterweights (6) in the bottom layer together forming a U-shaped second mounting groove (63), the first openings (61) of the second counterweights (6) in the other layers being clamped in the second mounting groove (63) of the second counterweights (6) in the next layer.

2. The pile static load test system according to claim 1, wherein, The bearing plate (4) is connected with four angle steels (41), which are respectively arranged at the four side edges of the common body formed by the plurality of first counterweights (5), and the two side plates of each angle steel (41) abut against the first counterweight (5).

3. The pile static load test system according to claim 1, wherein, The utility model further comprises a reinforcing assembly (7), which comprises a reinforcing plate (71), a plurality of first reinforcing rings (72), a plurality of second reinforcing rings (73), and a plurality of steel wires (74), the reinforcing plate (71) being arranged on all the second counterweights (6) in the top layer, the plurality of first reinforcing rings (72) being arranged along the circumference of the reinforcing plate (71) and connected to the reinforcing plate (71), the plurality of second reinforcing rings (73) being connected to the bearing plate (4), the second reinforcing ring (73) corresponding to the first reinforcing ring (72), the plurality of steel wires (74) corresponding to the first reinforcing ring (72), the steel wire (74) being arranged on the first reinforcing ring (72) and the second reinforcing ring (73), and the two ends of the steel wire (74) being connected to a rope clamp (75), which is fixedly connected to the two ends of the steel wire (74), and the steel wire (74) being in a tension state.

4. The pile static load test system according to claim 1, wherein, A plurality of padlocks (8) are arranged between the bearing plate (4) and the counterforce frame (3), the lock body of each padlock (8) being connected to the counterforce frame (3), the hook body of each padlock (8) being connected to the bearing plate (4), and the padlock (8) being used for detachably connecting the bearing plate (4) and the counterforce frame (3).

5. The pile static load test system according to claim 1, wherein The counterforce frame (3) comprises a main beam (31) and a secondary beam (32), the main beam (31) is arranged in parallel to the bearing wall (2) and the middle part is abutted on the movable end of the jack (1); the secondary beam (32) is arranged in plurality and is arranged vertically on the top end of the main beam (31), the plurality of secondary beams (32) are symmetrically arranged on the two sides of the jack (1), the two ends of the secondary beam (32) are respectively abutted on the two bearing walls (2), and the secondary beam (32) is detachably connected with the main beam (31).

6. The pile static load test system according to claim 5, wherein The main beam (31) is connected with a dovetail strip (311), the dovetail strip (311) is slidably inserted into the dovetail groove (321) arranged on each secondary beam (32).

7. The pile static load test system according to claim 6, wherein Both sides of the dovetail groove (321) are provided with a fixing plate (322), the fixing plate (322) is connected with the secondary beam (32), the fixing plate (322) is threadedly provided with a fixing bolt (323), and the fixing bolt (323) is threadedly connected into the fixing screw hole (312) arranged on the main beam (31).

8. The pile static load test system according to claim 1, wherein The opening side of the first counterweight block (5) and the second opening (62) side of the second counterweight block (6) are both provided with a lifting groove (52), and the groove bottom of the lifting groove (52) is connected with a lifting ring (53).

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