Foundation pile static load test device
By using positioning grooves and tooth support components in the foundation pile static load test device, the stability of concrete counterweight blocks during stacking is solved, ensuring the safety of the test and the accuracy of the data.
Patent Information
- Application Number
- CN202422459226.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-11
AI Technical Summary
In the existing foundation pile static load test, the concrete counterweight blocks have poor stability when stacked longitudinally, and are prone to collapse due to angle inclination, which affects the safety of the test.
A foundation pile static load test device is designed, using a support assembly with positioning grooves and embedded teeth on the outer wall of the steel frame. The clamping teeth and the counterweight block are inserted into the clamping and inlaying through springs. Combined with the locking of the support rod, the counterweight blocks are ensured to be stable in the steel frame and stacked.
It improves the stability of the counterweight block, avoids the risk of dumping, enhances the safety and data accuracy of static load tests, and reduces construction costs.
Smart Images
Figure CN223135209U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of static load tests for foundation piles, and specifically relates to a static load test device for foundation piles. Background Technique
[0002] The static load test for foundation piles is a test method used to determine the bearing capacity of pile foundations or foundation bases. It applies vertical pressure, vertical uplift force, or horizontal thrust step by step or cyclically, and observes the settlement, uplift displacement, or horizontal displacement of the top of the pile foundation or foundation base over time. This test is a direct method to obtain the bearing capacity of the foundation and pile foundation, and is crucial for ensuring the stability and safety of the building foundation structure.
[0003] However, in the current prior art, when conducting a static load test on a foundation pile, concrete counterweight blocks need to be placed on a steel frame to meet the gravity data required for the static load test. However, when placing the counterweight blocks, since they are stacked longitudinally, as the height increases, the stability of the concrete counterweight blocks will decrease accordingly, resulting in a risk of the counterweight blocks collapsing due to the inclination of the placement angle during stacking. Content of the Utility Model
[0004] The purpose of the utility model is to provide a static load test device for foundation piles to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution:
[0006] A static load test device for foundation piles includes a steel frame and counterweight blocks. A support assembly for stacking and supporting the counterweight blocks is arranged inside the steel frame. The support assembly includes a plurality of positioning grooves arranged on both sides of the outer wall of the steel frame. Cavities are arranged on both sides of the inner walls of the plurality of positioning grooves. Springs and ratchets are arranged inside the cavities. A plurality of barbs are arranged on the outer wall of the ratchet. Lock holes are arranged at the tops of both ends of the steel frame. Chutes are arranged at both ends of the steel frame. A support rod is arranged inside the chutes. Through holes are arranged on the outer wall of the support rod and the inner wall of the lock hole.
[0007] As a preferred scheme of the utility model, the plurality of positioning grooves are arranged in an array on both sides of the steel frame, and the size of the positioning grooves corresponds to that of the counterweight blocks. The cavities are located on both sides inside the positioning grooves, and the length matches the inner wall of the positioning grooves.
[0008] As a preferred scheme of the utility model, one end of the ratchet is located inside the cavity and is slidably connected to the inner wall of the cavity. The spring is located inside the cavity, and both ends are connected to the inner wall of the cavity and the ratchet by welding. The plurality of barbs are arranged in an array on the outer wall of the ratchet.
[0009] As a preferred solution of the utility model, the plurality of counterweight blocks are embedded in the positioning grooves of the steel frame, the latch teeth are pushed out from the cavity by springs, and abut against the counterweight blocks in the positioning grooves, and the barbs on the outer walls of the latch teeth are engaged with the depressions on the outer walls of the counterweight blocks.
[0010] As a preferred solution of the utility model, the support rod is located in the slide groove at the end of the steel frame and is slidably connected to the inner wall of the slide groove, and one end is rotatably connected to the inner wall of the slide groove through a connecting shaft. The end of the support rod away from the slide groove and the lock hole are both conical structures.
[0011] As a preferred solution of the utility model, the support rod can be rotatably embedded in the locking hole on the top of the steel frame below by extending from the slide groove. After the support rod is embedded in the locking hole, the internal through holes are correspondingly connected, and the support rod is locked by a bolt passing through the support rod and the locking hole.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: in response to the problems raised in the background technology, the present application adopts a support assembly, and by setting a positioning groove on the outside of the supporting steel frame, the concrete counterweight blocks can be positioned when they are stacked, and the concrete counterweight blocks can be embedded in the steel frame when placed, thereby improving the stability of the counterweight blocks in the steel frame and avoiding the shaking of the angle of the counterweight blocks when they are stacked; when the counterweight blocks are stacked, a steel frame is inserted in the middle for support, and support rods can be extended from both ends of the steel frame and rotated to be embedded in the top of the steel frame below, thereby supporting the angle between the steel frames, and the steel frame supports the counterweight blocks when they are stationary or placed, ensuring stability and preventing tipping caused by tilting.
[0013] The utility model embeds the concrete counterweight blocks when they are stacked through the embedding grooves of the steel frames to prevent the concrete counterweight blocks from moving on the steel frames, and supports the concrete counterweight blocks when they are stacked through the support rods between the steel frames, thereby improving the stability of the counterweight blocks and increasing the safety during static load test operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is the distribution diagram of the steel frame and concrete configuration blocks of the utility model;
[0015] Figure 2 This is the steel frame and support rod guarantee diagram of the utility model;
[0016] Figure 3 This is an enlarged view of part A of the utility model;
[0017] Figure 4 This is a cross-sectional view of the positioning groove of the steel frame of the utility model.
[0018] In the figure: 1, steel frame; 2, positioning groove; 3, cavity; 301, spring; 302, latch tooth; 4, barb; 5, lock hole; 6, slide groove; 7, support rod; 8, through hole; 9, counterweight block. Detailed implementation mode
[0019] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Embodiment
[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a static load test device for foundation piles, including a steel frame 1 and a counterweight 9. A support assembly for stacking and supporting the counterweight 9 is arranged inside the steel frame 1. The support assembly includes a plurality of positioning grooves 2 arranged on both sides of the outer wall of the steel frame 1. The positioning grooves 2 are used as grooves on the steel frame 1. When the counterweight 9 is placed on the steel frame 1, the counterweight 9 can be embedded in the positioning grooves 2 of the steel frame 1. Through the height difference of the positioning grooves 2 recessed in the steel frame 1, after the counterweight 9 is embedded, it matches the positioning grooves 2, thereby preventing the counterweight 9 from shaking on the steel frame 1 and positioning the position and angle of the counterweight 9. Cavities 3 are arranged on both sides of the inner walls of the plurality of positioning grooves 2, which can provide a contraction space for the teeth 302 (when the counterweight 9 is placed in the positioning grooves 2 of the steel frame 1, the teeth 302 are squeezed by the angle of the teeth 302 and contracted into the cavities 3). A spring 301 and teeth 302 are arranged inside the cavity 3. The spring 301 can support the teeth 302 and push the teeth 302 to extend out of the cavity 3. A plurality of barbs 4 are arranged on the outer wall of the teeth 302. When the teeth 302 extend out of the cavity 3, they can abut against the counterweight 9, and cooperate with the angle of the teeth 302 and the external barbs 4 to be stuck in the pits on the concrete, improving the stability of the counterweight 9 and reducing the probability of it detaching from the positioning grooves 2. Lock holes 5 are arranged at the tops of both ends of the steel frame 1. Sliding grooves 6 are arranged at both ends of the steel frame 1. The support rods 7 are stored in the sliding grooves 6 in the normal state. The support rods 7 are arranged inside the sliding grooves 6. Through holes 8 are arranged on the outer walls of the support rods 7 and the inner walls of the lock holes 5. The steel frame 1 and the counterweight 9 are stacked crosswise, so as to improve the stability when the counterweight 9 is placed by the steel frame 1. After stacking, the support rods 7 at both ends of the steel frame 1 (except the bottom one) can be pulled out of the steel frame 1 and driven to rotate and be embedded in the lock holes 5 of the corresponding lower steel frame 1, and the through holes 8 in the support rods 7 and the lock holes 5 are aligned. Then, the support rods 7 are locked by bolts passing through the support rods 7 and the lock holes 5, and the plurality of steel frames 1 are linked together to increase the overall stability and prevent the counterweight 9 from shaking when placed. By conducting a static load test on the foundation piles in the limestone fracture zone stratum, the pile foundation parameter data of the limestone fracture zone stratum can be detected, thereby providing an accurate basis for pile foundation design, ensuring the safety of the building, saving construction costs, and at the same time providing effective engineering experience and data reference for similar strata.
[0021] Embodiment, please refer to Figures 1-4, a plurality of the positioning grooves 2 are arrayed on both sides of the steel frame 1, and the size of the positioning groove 2 corresponds to that of the counterweight 9. The cavity 3 is located on both inner sides of the positioning groove 2 and has a length matching the inner wall of the positioning groove 2. One end of the tooth 302 is located in the cavity 3 and is slidably connected to the inner wall of the cavity 3. The spring 301 is located in the cavity 3 and both ends are connected to the inner wall of the cavity 3 and the tooth 302 by welding. A plurality of the barbs 4 are arrayed on the outer wall of the tooth 302. A plurality of the counterweights 9 are all embedded in the positioning groove 2 of the steel frame 1. The tooth 302 is pushed out of the cavity 3 by the spring 301 and abuts against the counterweight 9 in the positioning groove 2, and the barbs 4 on the outer wall of the tooth 302 are engaged with the pits on the outer wall of the counterweight 9. The support rod 7 is located in the chute 6 at the end of the steel frame 1 and is slidably connected to the inner wall of the chute 6, and one end is rotatably connected to the inner wall of the chute 6 through a connecting shaft. Both the end of the support rod 7 away from the chute 6 and the lock hole 5 are conical structures. The support rod 7 can be rotatably embedded in the lock hole 5 at the top of the lower steel frame 1 by extending out of the chute 6. After the support rod 7 is embedded in the lock hole 5, the through holes 8 inside are correspondingly communicated, and the support rod 7 is locked by passing a bolt through the support rod 7 and the lock hole 5. During use, first place the jack and the support base in the designated area of the pile foundation, then place the bottommost steel frame 1 in position through the jack, then place the counterweights 9 in the positioning groove 2 of the steel frame 1 when stacking, and at the same time, the teeth 302 on both inner sides of the inner wall of the positioning groove 2 are extended by the spring 301 and engaged with the counterweights 9, and the placement position of the counterweights 9 is positioned through the positioning groove 2. Then, the steel frame 1 and the counterweights 9 are stacked crosswise through the positioning groove 2 on the steel frame 1. After placing one layer, extend the support rods 7 at both ends of the steel frame 1 out of the chute 6 and rotate them to extend into the lock holes 5 of the lower steel frame 1. At the same time, the through holes 8 of the support rod 7 and the lock hole 5 correspond, and then the support rod 7 is locked by passing a bolt through the through holes 8 of the support rod 7 and the lock hole 5, and stack repeatedly.
[0022] Working process of the utility model: When in use, first place the jack and the support base in the designated area of the pile foundation, then place the bottommost steel frame 1 through the position of the jack, and then place the counterweight blocks 9 in the positioning grooves 2 of the steel frame 1 when stacking them. At the same time, make the teeth 302 on both sides of the inner wall of the positioning groove 2 extend through the spring 301 and engage with the counterweight blocks 9, and position the placement position of the counterweight blocks 9 through the positioning grooves 2. Then, stack the steel frame 1 and the counterweight blocks 9 crosswise through the positioning grooves 2 on the steel frame 1. After placing one layer, extend the support rods 7 at both ends of the steel frame 1 out of the sliding grooves 6 and rotate them into the locking holes 5 of the lower steel frame 1. At the same time, the through holes 8 of the support rods 7 correspond to the locking holes 5. Then, lock the support rods 7 by passing bolts through the through holes 8 of the support rods 7 and the locking holes 5, and stack them repeatedly. The utility model clamps the concrete counterweight blocks when stacking them through the embedding grooves of the steel frame, avoids the movement of the concrete counterweight blocks on the steel frame, and supports the concrete counterweight blocks when stacking them through the support rods between the steel frames, improves the stability of the counterweight blocks, and increases the safety during the static load test operation.
[0023] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A static load test device for foundation piles, comprising a steel frame (1) and counterweight blocks (9), wherein a support assembly for stacking and supporting the counterweight blocks (9) is arranged inside the steel frame (1), and is characterized in that: The support assembly includes a plurality of positioning grooves (2) arranged on both sides of the outer wall of the steel frame (1). Cavities (3) are arranged on both sides of the inner walls of the plurality of positioning grooves (2). A spring (301) and a latch (302) are arranged inside the cavity (3). A plurality of barbs (4) are arranged on the outer wall of the latch (302). Lock holes (5) are arranged at the tops of both ends of the steel frame (1). Chutes (6) are arranged at both ends of the steel frame (1). A support rod (7) is arranged inside the chute (6). Through holes (8) are arranged on the outer wall of the support rod (7) and the inner wall of the lock hole (5).
2. The static load test device for foundation piles according to claim 1, wherein: The plurality of positioning grooves (2) are arranged in an array on both sides of the steel frame (1), and the size of the positioning groove (2) corresponds to that of the counterweight (9). The cavity (3) is located on both sides inside the positioning groove (2), and the length thereof matches the inner wall of the positioning groove (2).
3. The static load test device for foundation piles according to claim 1, characterized in that: One end of the latch (302) is located inside the cavity (3) and is slidably connected to the inner wall of the cavity (3). The spring (301) is located inside the cavity (3), and both ends thereof are connected to the inner wall of the cavity (3) and the latch (302) by welding. The plurality of barbs (4) are arranged in an array on the outer wall of the latch (302).
4. The static load test device for foundation piles according to claim 1, wherein: The plurality of counterweights (9) are all embedded in the positioning grooves (2) of the steel frame (1). The latch (302) is pushed out from the cavity (3) by the spring (301) and abuts against the counterweight (9) inside the positioning groove (2). The barbs (4) on the outer wall of the latch (302) are engaged with the pits on the outer wall of the counterweight (9).
5. The static load test device for foundation piles according to claim 1, characterized in that: The support rod (7) is located inside the chute (6) at the end of the steel frame (1) and is slidably connected to the inner wall of the chute (6), and one end thereof is rotatably connected to the inner wall of the chute (6) by a connecting shaft. The end of the support rod (7) away from the chute (6) and the lock hole (5) are both conical structures.
6. The static load test device for foundation piles according to claim 1, wherein: The support rod (7) can be rotatably embedded into the lock hole (5) at the top of the lower steel frame (1) by extending out of the chute (6). After the support rod (7) is embedded in the lock hole (5), the through holes (8) inside are correspondingly communicated, and the support rod (7) is locked by passing a bolt through the support rod (7) and the lock hole (5).