Engineering foundation pile fixing device for building engineering foundation pile detection

Abstract

The invention provides an engineering foundation pile fixing device for construction engineering foundation pile detection. The fixing device comprises a foundation pile body, a bearing plate, a jack, a fixing mechanism, a supporting plate and a plurality of sets of supporting mechanisms, the foundation pile body is sleeved with the fixing mechanism, the bearing plate is located on the pile top of the foundation pile body, the jack is installed on the bearing plate, a flexible buffering pressing plate is arranged between the bearing plate and the foundation pile body, and the supporting plate is installed on the flexible buffering pressing plate. The flexible buffer pressing plate is fixedly mounted at the bottom of the bearing plate; the fixing mechanism comprises a fixing ring and a plurality of clamping mechanisms, the supporting plate is located on the inner side of the supporting plate, and a driving mechanism used for controlling the supporting plate to rotate is further arranged on the fixing mechanism. The method can adapt to the tiny unevenness of the pile top, a traditional precise leveling procedure is not needed, it can be guaranteed that loads are evenly transmitted, and test preparation work can be simplified; and the detection module is installed above the supporting plate and can be rotated by the driver, so that the bearing capacity of the foundation pile can be calculated more accurately, and the foundation pile detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of building engineering testing technology, specifically to a foundation pile fixing device for testing foundation piles in building engineering. Background Technology

[0002] Foundation piles are a common type of foundation in civil engineering, primarily used to transfer the load of a building to deep, stable soil, ensuring the stability and safety of the structure. Foundation piles can be classified into various types based on their materials, construction methods, and functional characteristics, such as reinforced concrete piles, precast piles, steel pipe piles, and cast-in-place piles.

[0003] The quality and performance of foundation piles play a crucial role in the safety and stability of the entire project. After the foundation piles are constructed, their bearing capacity, integrity, settlement, and deformation are tested to provide strong assurance for the safety and stability of the building project. When conducting a single pile vertical compressive static load test, it is usually necessary to level the pile top and lay a coarse sand leveling layer, place a bearing steel plate to ensure it coincides with the pile center, and then place jacks on top of the bearing plate, using counterweights or anchor piles connected to the main beam to provide reaction force. Existing building pile foundation testing equipment can cause errors due to equipment shaking during testing, and may also damage the equipment. Therefore, pile fixing is necessary during pile foundation testing; thus, pile fixing devices are an indispensable mechanism in pile foundation testing.

[0004] The existing fixing devices for pile foundation testing have the following defects when in use:

[0005] First, the compatibility between the bearing plate of the pile foundation fixing device and the pile foundation is poor. In order to ensure uniform load transfer, the pile foundation needs to be treated before testing. After leveling the top of the pile foundation, the bearing plate and jack are installed. The above operation will damage the pile foundation and is troublesome, time-consuming and labor-intensive. This step needs to be repeated for different pile foundation tests, which has poor adaptability and affects the efficiency of testing.

[0006] Secondly, the existing pile foundation testing and fixing devices are relatively large in size, heavy in weight, and not easy to disassemble. During testing, the testing and fixing devices need to be moved to the area where the piles are located. During installation and use, multiple people are needed to carry out the moving and installation, which is not very convenient and is time-consuming and labor-intensive.

[0007] Secondly, due to the differences in terrain around different foundation piles, the ground has a certain slope, and the existing foundation pile detection and fixing devices cannot adapt well to changes in terrain slope, which has an adverse effect on the stability of the fixing devices.

[0008] Finally, the existing engineering piles have different shapes, but most of the existing pile foundation testing and fixing devices are designed for round piles. When testing square piles or other irregularly shaped piles, the adaptability of the fixing parts is poor, and there are cases where the fixing is not secure.

[0009] Therefore, a foundation pile fixing device for foundation pile testing in building engineering is needed to solve the problems mentioned above. Summary of the Invention

[0010] The purpose of this invention is to provide an engineering foundation pile fixing device for foundation pile testing in building engineering. This device, through modular fixing and support mechanisms, can reduce the difficulty of transportation and handling, is easy to install, has high adaptability to terrain, and can ensure uniform load transfer, thereby improving testing efficiency.

[0011] To achieve the above objectives, the present invention provides an engineering pile fixing device for testing foundation piles in building engineering, including a pile body bearing plate and a jack. The fixing device also includes a fixing mechanism, a support plate, and multiple sets of support mechanisms. The multiple sets of support mechanisms are used to support the fixing mechanism. The fixing mechanism is sleeved on the outside of the pile body and fixes the pile body. The bearing plate is located at the top of the pile body. The jack is installed on the bearing plate. A flexible buffer plate is provided between the bearing plate and the pile body. The flexible buffer plate is fixedly installed at the bottom of the bearing plate.

[0012] The fixing mechanism includes a fixing ring and multiple clamping mechanisms. The multiple clamping mechanisms are arranged in a ring along the fixing ring. Each clamping mechanism includes a support plate, a first telescopic rod, a pressure bearing seat, and a clamping assembly. The support plate is located on the outside of the fixing ring. One end of the first telescopic rod is fixed to the support plate, and its telescopic end extends to the inside of the fixing ring. The pressure bearing seat is located on the inner ring of the fixing ring and is detachably installed on the telescopic end of the first telescopic rod. The clamping assembly is fixed on the side of the pressure bearing seat away from the first telescopic rod.

[0013] The support plate is located inside the support plate. A drive mechanism for controlling the rotation of the support plate is also provided on the fixing mechanism. The drive mechanism includes a motor, a gear and a gear ring. The support plate is fixedly installed at the bottom of the gear ring. A rotating groove is opened on the outer ring surface of the fixing ring. The gear ring is rotatably installed in the rotating groove. The motor is fixed at the top of one of the support plates. A through hole is opened through the inside of the support plate. The gear is rotatably installed in the through hole and meshes with the gear ring. The output shaft of the motor extends into the through hole and is connected to the rotating shaft of the gear to control the rotation of the gear, thereby driving the gear ring and the support plate to rotate around the pile body.

[0014] The preferred technical solution of the present invention is as follows: the number of the support mechanisms matches the number of the support plates, and each set of support mechanisms is detachably installed at the bottom of the corresponding support plate; each set of support mechanisms includes a ground support plate, a second telescopic rod, a connecting plate and a fixed support rod, and is detachably connected to the corresponding support plate through the connecting plate; the second telescopic rod is located between the connecting plate and the ground support plate; one end of the fixed support rod is hinged to the outside of the connecting plate; an extension support rod is slidably connected inside the fixed support rod; and a rotating bottom support is provided at the bottom of the extension support rod.

[0015] A preferred technical solution of the present invention: the fixing mechanism further includes a connecting ring, which is located above and connected to the fixed ring; the pressure plate is located at the top of the connecting ring; the thickness of the flexible buffer pressure plate is 20-50mm; the first telescopic rod of each clamping mechanism extends into the inner ring of the fixed ring from between the connecting ring and the fixed ring; mounting holes are provided at the positions where the first telescopic rod passes through the connecting ring and the fixed ring, the first telescopic rod is inserted into the mounting hole, and a protective sleeve is fixedly installed inside the mounting hole.

[0016] The preferred technical solution of the present invention is as follows: a drive shaft is fixedly installed at the output end of the motor, the drive shaft is inserted into the inside of the support plate, a slot is opened at the top of the gear, a snap-fit ​​block is fixedly installed on the outer wall of the drive shaft, the snap-fit ​​block snaps into the slot, and the slot and the snap-fit ​​block are connected by interference fit.

[0017] The preferred technical solution of the present invention is as follows: the clamping mechanism is provided in four groups, which are equidistantly arranged on the fixed ring. The telescopic end of the first telescopic rod of each clamping mechanism is fixedly installed with a connecting block. The pressure seat has a connecting groove inside, and the connecting block is set inside the connecting groove and fixedly connected to the pressure seat with bolts.

[0018] The preferred technical solution of the present invention is as follows: the clamping assembly includes a clamping block and a flexible sleeve, the clamping block is fixedly installed on one side of the pressure bearing seat, and the flexible sleeve is fixedly installed on the clamping surface of the clamping block; the clamping block is arc-shaped or straight.

[0019] A preferred technical solution of the present invention is as follows: a reinforcing diagonal brace is fixedly installed on the top of the grounding support plate. The reinforcing diagonal brace is provided in two sets, symmetrically arranged on both sides of the second telescopic rod, and the other end of each reinforcing diagonal brace is fixedly connected to the outer wall of the second telescopic rod. The first telescopic rod and the second telescopic rod extend and retract synchronously through Hall sensors.

[0020] A preferred technical solution of the present invention is as follows: a plug is fixedly installed on the top of the connecting plate, and a slot is correspondingly opened on the bottom of the support plate. The plug of each connecting plate is inserted into the slot at the bottom of the corresponding support plate, and the support plate and the connecting plate are fixedly connected by bolts. A mounting plate is fixedly installed on one side of the connecting plate. A rotating shaft is rotatably connected inside the mounting plate. A connecting seat is fixedly installed on the outer wall of the rotating shaft. The upper end of the fixed support rod is installed at the bottom of the connecting seat, and the lower end is slidably connected to an extension support rod.

[0021] A preferred technical solution of the present invention is as follows: a fixing ring is sleeved on the outer wall of the fixed support rod, the fixing ring is fixed to the outer wall of the fixed support rod by bolts, a rotating base is fixedly installed at the bottom end of the extension support rod, a rotating bottom support is rotatably connected inside the rotating base, and nail plates are fixedly installed at the bottom of both the rotating bottom support and the ground support plate.

[0022] A preferred technical solution of the present invention is as follows: the grounding support plate includes an adjustable support, a fixing bolt is rotatably connected inside the adjustable support, a supporting base plate is sleeved on the outer wall of the fixing bolt, a threaded groove is opened on the outer wall of the fixing bolt, a nut is threadedly connected to the outer wall of the fixing bolt, a pad is fixedly installed on one side of the adjustable support, and the fixing bolt penetrates the pad.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention adds a 20-50mm thick elastic buffer layer between the bearing plate and the pile top to accommodate minor unevenness at the pile top, eliminating the need for traditional precise leveling procedures. This ensures uniform load transfer, simplifies test preparation, and improves testing efficiency. Furthermore, by setting up a gear and gear ring to mesh, the detection module is installed above the support plate. While detecting the vertical static load of the pile, the sensor detection group monitors data such as the compressive response of the pile surface under stress and the displacement values ​​that occur during bearing capacity testing. This facilitates more accurate calculation of the pile's bearing capacity and improves testing efficiency.

[0025] 2. The device of this invention, through its modular design of fixing and supporting mechanisms, facilitates the transportation and handling of the pile testing fixing device during external pile testing, reducing transportation difficulties, manpower consumption, and space occupation. Furthermore, it can be assembled according to the testing requirements of different piles, increasing the adaptability of the fixing device. The installation of fixing rings and connecting rings for mounting and clamping components reduces installation difficulty, improves installation efficiency, and standardizes installation, which helps improve testing accuracy and reduce labor costs. The supporting mechanism enhances adaptability to high pile testing, reduces manpower consumption, and improves testing efficiency. The bolt connection between the fixing ring and the connecting ring facilitates rapid integration of the fixing mechanism.

[0026] 3. The device of the present invention improves the adaptability to terrain by setting the grounding area of ​​the fixing device to an adjustable angle. When fixing foundation piles in different terrain environments, the bottom of the fixing device can adapt to the changes in terrain slope, thereby improving the stability of the device. At the same time, the fixing head is modularly set. When fixing different piles, the fixing head can be disassembled and replaced with a fixing head suitable for the pile, which improves the firmness of the fixing and avoids loosening. Attached Figure Description

[0027] Figure 1 This is a perspective view of the main structure of the present invention;

[0028] Figure 2 This is a top view of the structural perspective of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation of the present invention;

[0030] Figure 4 This is a perspective view of the fixing mechanism in this invention.

[0031] Figure 5 This is a three-dimensional view of the disassembled structure of the fixing mechanism in this invention;

[0032] Figure 6 for Figure 5 Enlarged view of point A;

[0033] Figure 7 This is a front view perspective view of the support mechanism in this invention;

[0034] Figure 8 This is a three-dimensional view of the disassembled structure of the support mechanism in this invention;

[0035] Figure 9 This is a schematic diagram of the deformation of the support mechanism of the present invention;

[0036] Figure 10 This is a schematic diagram of the present invention for clamping a square pile foundation;

[0037] Figure 11 This is a schematic diagram of the square pile foundation clamping mechanism in this invention;

[0038] Figure 12 This is a schematic diagram of the invention for clamping a circular pile foundation;

[0039] Figure 13 This is a schematic diagram of the circular pile foundation clamping mechanism in this invention.

[0040] In the diagram: 1. Fixing mechanism; 101. Support plate; 102. First telescopic rod; 103. Connecting block; 104. Pressure bearing seat; 105. Connecting groove; 106. Clamping block; 107. Flexible sleeve; 108. Fixing ring; 109. Connecting ring; 110. Mounting hole; 111. Protective sleeve; 112. Rotating groove; 113. Gear ring; 114. Through hole; 115. Gear; 116. Insertion groove; 117. Motor; 118. Drive shaft; 119. Snap-fit ​​block; 2. Support mechanism; 201. Grounding support plate; 2011. Adjustable support; 2012. Fixing bolt; 2013. Support base plate; 2014. Threaded groove; 2015. Nut; 2016. Pad layer; 202. Second telescopic rod; 203. Reinforcing diagonal brace; 204. Connecting plate; 205. Insert block; 206. Mounting plate; 207. Rotating shaft; 208. Connecting seat; 209. Fixed support rod; 210. Extension support rod; 211. Fixing ring; 212. Rotating base; 213. Rotating bottom support; 214. Nail plate; 3. Foundation pile body; 4. Bearing plate; 5. Jack; 6. Flexible buffer pressure plate; 7. Support plate; Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1 provides an engineering foundation pile fixing device for foundation pile testing in building engineering, as shown in the attached figure. Figures 1 to 10 As shown, the structure includes a fixing mechanism 1, a pile body 3, a bearing plate 4, a jack 5, a support plate 7, and multiple sets of support mechanisms 2. The multiple sets of support mechanisms 2 are used to support the fixing mechanism 1. Both the fixing mechanism 1 and the support mechanism 2 are located on the outer wall of the pile body 3. The bearing plate 4 is located at the top of the pile body 3. The jack 5 is installed on the bearing plate 4. A flexible buffer plate 6 is provided between the bearing plate 4 and the pile body 3. The flexible buffer plate 6 is fixedly installed at the bottom of the bearing plate 4. By placing the bearing plate 4 at the top of the pile body 3, a 20-50mm thick elastic buffer layer is added between the bearing plate 4 and the pile top using the flexible buffer plate 6. The buffer layer can fill the small pits or protrusions at the pile top through its own deformation, so that the load is evenly distributed to the pile top, avoiding local stress concentration, and adapting to the slight unevenness of the pile top (such as residual laitance or slight tilt due to construction), without the need for pre-leveling. This design can accommodate minor unevenness at the top of the pile, eliminating the need for traditional precision leveling procedures (such as mortar application and mechanical grinding). It ensures uniform load transfer, simplifies test preparation, and improves testing efficiency.

[0043] In Example 1, as Figures 4 to 6 As shown, the fixing mechanism 1 includes a fixing ring 108, a connecting ring 109, and multiple sets of clamping mechanisms. These clamping mechanisms are arranged in a ring along the fixing ring 108. Each clamping mechanism includes a support plate 101, a first telescopic rod 102, a pressure seat 104, and a clamping assembly. The support plate 101 is located outside the fixing ring 108. One end of the first telescopic rod 102 is fixed to the support plate 101, and its telescopic end extends to the inside of the fixing ring 108. The pressure seat 104 is located in the inner ring of the fixing ring 108 and is detachably mounted on the telescopic end of the first telescopic rod 102. The clamping assembly is fixed to the side of the pressure seat 104 away from the first telescopic rod 102. The connecting ring 109 is located above and connected to the fixing ring 108. The pressure plate 4 is located at the top of the connecting ring 109. The first telescopic rod 102 of each clamping mechanism extends from between the connecting ring 109 and the fixing ring 108 into the inner ring of the fixing ring 108. To facilitate the installation of the first telescopic rod 102, mounting holes 110 are provided at the positions where the connecting ring 109 and the fixing ring 108 pass through the first telescopic rod 102. The first telescopic rod 102 is inserted into the mounting hole 110, and a protective sleeve 111 is fixedly installed inside the mounting hole 110. When the first telescopic rod 102 is inserted into the mounting hole 110, the protective sleeve 111 fits against the outer wall of the first telescopic rod 102, protecting the first telescopic rod 102 and preventing wear on the rod body. The fixing ring 108 and the connecting ring 109 are fixedly connected by bolts, which facilitates the integration of the fixing mechanism 1, standardizes the installation and connection, reduces the difficulty of disassembling and assembling the fixing mechanism 1, and makes it easy to carry and assemble.

[0044] In Example 1, the foundation pile fixing device for testing foundation piles in building engineering is used by fixing mechanism 1 to the outer wall of the foundation pile body 3. After installation, an ultrasonic pile measuring instrument is used to test the foundation pile body 3. Support mechanism 2 provides height support for fixing mechanism 1. When testing high piles, the overall height of fixing mechanism 1 is increased by installing and connecting support mechanism 2, thus fixing mechanism 1 is installed on the outer wall of foundation pile body 3 for testing. Both fixing mechanism 1 and support mechanism 2 adopt a modular design, which facilitates the installation and disassembly of the whole device, improving the flexibility and portability of the device. When changing the site of use, the whole can be disassembled into component structures, reducing the difficulty of transporting the device and the manpower consumption. When used in different terrain conditions, such as Figure 3 As shown, by setting the grounding part of the support mechanism 2 as an adjustable structure to adapt to different slope changes and maximize contact with the ground, the length of the load-bearing column is adjusted to ensure that the fixing mechanism 1 is horizontally set on the outside of the pile body, thereby improving the stability of the fixing device.

[0045] In Embodiment 1, the support plate 7 is used to install the sensor detection group. The support plate 7 is an inverted L-shape and located inside the support plate 101. A drive mechanism for controlling the rotation of the support plate 7 is also provided on the fixing mechanism 1. The drive mechanism includes a motor 117, a gear 115, and a gear ring 113. The support plate 7 is fixedly installed at the bottom of the gear ring 113. A rotating groove 112 is formed on the outer ring surface of the fixing ring 108, and the gear ring 113 is rotatably installed in the rotating groove 112. The motor 117 is fixed to the top of one of the support plates 101. A drive shaft 118 is fixedly installed at the output end of the motor 117 and inserted into the inside of the support plate 101. A through hole 114 is formed inside the support plate 101. 5 is rotatably installed in the through hole 114 and meshes with the gear ring 113. The gear 115 has an insertion groove 116 on its top. The transmission shaft 118 has a snap-fit ​​block 119 fixedly installed on its outer wall. The snap-fit ​​block 119 snaps into the insertion groove 116. The insertion groove 116 and the snap-fit ​​block 119 are connected by an interference fit. The motor 117 drives the gear 115 to rotate, so that the gear 115 meshes with the gear ring 113, and drives the gear ring 113 to rotate inside the rotating groove 112. This causes the gear ring 113 and the support plate 7 to rotate around the foundation pile body 3. Adjusting the position of the support plate 7 installed at the bottom of the gear ring 113 facilitates all-round inspection of the foundation pile body 3, avoids manual adjustment, improves inspection efficiency, and improves the accuracy of inspection results.

[0046] Example 2 provides an engineering pile fixing device for testing foundation piles in building engineering. Its main structure is the same as in Example 1, including a fixing mechanism 1, a pile body 3, a bearing plate 4, a jack 5, and multiple sets of support mechanisms 2. The fixing mechanism is the same as in Example 1. The difference lies in that, in Example 2, as... Figure 1 , Figure 7 and Figure 8As shown, each support mechanism 2 includes a grounding support plate 201, a second telescopic rod 202, a connecting plate 204, and a fixed support rod 209. The telescopic end of the second telescopic rod 202 faces upward, and the connecting plate 204 is fixedly installed at its telescopic end. An insert block 205 is fixedly installed on the top of the connecting plate 204. A slot is correspondingly provided at the bottom of the support plate 101, and the insert block 205 of each support mechanism 2 is inserted into the slot of the corresponding support plate 101. The support plate 101 and the connecting plate 204 are fixedly connected by bolts. The first telescopic rod 102 and the second telescopic rod 202 extend and retract synchronously through Hall sensors. The lower end of the second telescopic rod 202 is connected to the grounding support plate 201. A reinforcing diagonal brace 203 is fixedly installed on the top of the grounding support plate 201. There are two sets of reinforcing diagonal braces 203, symmetrically arranged on both sides of the second telescopic rod 202, and the other end of each reinforcing diagonal brace 203 is fixedly connected to the outer wall of the second telescopic rod 202. The fixed support rod 209 is located outside the second telescopic rod 202. An mounting plate 206 is fixed to the outside of the connecting plate 204. A rotating shaft 207 is rotatably connected inside the mounting plate 206. A connecting seat 208 is fixedly installed on the outer wall of the rotating shaft 207. One end of the fixed support rod 209 is fixedly connected to the connecting seat 208. The mounting plate 206 and the rotating shaft 207 are fixedly connected by bolts. An extension support rod 210 is slidably connected inside the fixed support rod 209. A fixing ring 211 is sleeved on the outer wall of the fixed support rod 209 and fixed to the outer wall of the fixed support rod 209 by bolts. The bottom end of the extension support rod 210 is fixedly installed... The device includes a rotating base 212, with a rotating base support 213 rotatably connected inside the rotating base 212. Both the rotating base support 213 and the bottom of the grounding support plate 201 are fixedly installed with nail plates 214. The grounding support plate 201 includes an adjustable support 2011, with a fixing bolt 2012 rotatably connected inside the adjustable support 2011. The outer wall of the fixing bolt 2012 is fitted with a supporting base plate 2013, and the outer wall of the fixing bolt 2012 has a threaded groove 2014. A nut 2015 is threadedly connected to the outer wall of the fixing bolt 2012. A pad 2016 is fixedly installed on one side of the adjustable support 2011, and the fixing bolt 2012 passes through the pad 2016.

[0047] The effect achieved in Example 2 is as follows: By setting a grounding support plate 201, a nail plate 214 is fixedly installed at the bottom of the grounding support plate 201, and the nail plate 214 is fixed to the ground. A second telescopic rod 202 and a reinforcing diagonal brace 203 are fixedly installed at the top of the grounding support plate 201. The reinforcing diagonal brace 203 is fixedly connected to the second telescopic rod 202 to strengthen the support of the second telescopic rod 202. A connecting plate 204 is fixedly installed at the telescopic end of the second telescopic rod 202. An installation plate 206 is fixedly connected to one side of the connecting plate 204. A rotating shaft 207 is rotatably connected inside the installation plate 206. A connecting seat 208 is fixedly installed on the outer wall of the rotating shaft 207. A fixed support rod 209 is installed at the bottom of the connecting seat 208. An extension support rod 210 is slidably connected inside the fixed support rod 209. A rotating shaft 208 is fixedly installed at the bottom end of the extension support rod 210. The rotating base 212 is rotatably connected to the rotating base 213 inside the rotating base 212. When the angle between the fixed support rod 209 and the mounting plate 206 changes, the grounding angle of the rotating base 213 is adaptable, maximizing contact with the ground and improving the stability of the support. The bottom of the rotating base 213 is fixedly installed with a nail plate 214 for contacting the ground and improving the support strength. The support height is adjusted according to the height of the foundation pile. After the support height is adjusted, the position of the extension support rod 210 inserted into the fixed support rod 209 and the angle between the fixed support rod 209 and the mounting plate 206 are adjusted. The mounting plate 206 and the rotating shaft 207 are fixed with bolts. After the nail plate 214 installed at the bottom of the rotating base 213 touches the ground, the length of the extension support rod 210 is fixed with a fixing ring 211 to increase the diagonal support and improve the overall stability. The grounding support plate 201 is designed with an adjustable angle structure. The adjustable support 2011 rotates and adjusts the support base plate 2013. The grounding angle of the support base plate 2013 is adjusted by rotating the fixing bolt 2012 with the adjustable support 2011. When used on ground with different slopes, it can maximize the contact with the ground and improve the stability of the support. After the ground is fully in contact, the connection between the support base plate and the adjustable support 2011 is strengthened by the threaded connection between the nut 2015 and the fixing bolt 2012, which enhances the connection strength and further improves the stability of the support mechanism 2.

[0048] When inspecting taller foundation piles, the foundation pile fixing device in Embodiment 2 can be used for fixing. By inserting the plug 205 installed on the top of the connecting plate 204 into the interior of the support plate 101, the support plate 101 and the connecting plate 204 are connected by bolts to support the fixing mechanism 1 and increase the height of the fixing mechanism 1. After the connection is completed, the device is moved to the vicinity of the foundation pile body 3, the length of the second telescopic rod 202 is adjusted, and the fixing mechanism 1 is set above the foundation pile body 3. Then, the height of the second telescopic rod 202 is adjusted, and the fixing mechanism 1 is set on the outer wall of the foundation pile body 3. Then, the length of the first telescopic rod 102 is adjusted to fix the foundation pile body 3. The first telescopic rod 102 and the second telescopic rod 202 are electric telescopic rods or cylinder telescopic rods. The first telescopic rod 102 and the second telescopic rod 202 are controlled to extend and retract synchronously by setting a Hall sensor, which ensures the consistency of contact and support height with the foundation pile body 3, thereby ensuring the synchronicity of the use of each component and improving the stability of the device.

[0049] Example 3 provides an engineering foundation pile fixing device for foundation pile testing in building engineering. Its main structure is the same as in Example 1, and its support mechanism is the same as in Example 2. The difference lies in that... Figures 4 to 6 As shown, a connecting block 103 is fixedly installed at the telescopic end of the first telescopic rod 102. A connecting groove 105 is provided inside the pressure seat 104. The connecting block 103 is disposed inside the connecting groove 105 and fixedly connected to the pressure seat 104 by bolts. The clamping assembly includes a clamping block 106 and a flexible clamping sleeve 107. The clamping block 106 is fixedly installed on one side of the pressure seat 104, and the flexible clamping sleeve 107 is fixedly installed on the clamping surface of the clamping block 106. The clamping block 106 is arc-shaped (e.g., ...). Figure 13 (as shown) or straight strip (such as) Figure 11 As shown), the arc-shaped clamping block 106 is suitable for circular pile foundations, while the straight clamping block is suitable for square pile foundations. To ensure clamping stability, four sets of clamping components are provided in the embodiment, such as... Figure 10 and Figure 12 As shown, the pile body 3 is clamped and fixed by four sets of clamping components.

[0050] In Embodiment 3, a support plate 101 is set up, and a first telescopic rod 102 is fixedly installed on one side of the support plate 101. A connecting block 103 is fixedly installed at the telescopic end of the first telescopic rod 102. A pressure seat 104 is set up, and a connecting groove 105 is opened inside the pressure seat 104. The connecting block 103 is inserted into the connecting groove 105 and fixed with bolts. The pressure seat 104 is fixed to the telescopic end of the first telescopic rod 102. A clamping block 106 is fixedly installed on one side of the pressure seat 104, and a flexible sleeve 107 is fixedly installed on one side of the clamping block 106. The first telescopic rod 102 drives the clamping block 106 to approach the outer wall of the pile body 3, so that the flexible sleeve 107 flexibly fits the outer wall of the pile body 3. This improves the adaptability of the device, allowing it to fit irregular piles and inclined piles, and enabling the pile body 3 to be inspected. This reduces equipment installation errors and improves the adaptability of the pile body 3 to different surfaces. In Example 1, each set of support mechanisms 2 is installed at the bottom of the support plate 101 to support the fixing mechanism. The support mechanism 2 is threadedly connected to the support plate 101 for easy assembly and disassembly.

[0051] In Example 3, when testing different pile bodies, such as Figure 10 and Figure 11 The square pile inspection shown can be improved by disassembling and replacing the clamping head to fix it, thus increasing the compatibility between the pile and the fixing head; similarly, when inspecting circular pile foundations, if... Figure 12 and Figure 13 As shown, the circular pile clamping head is replaced for fixation. If it is necessary to inspect irregularly shaped piles, the fixing head can be disassembled and replaced to improve the fixing effect of irregularly shaped piles and avoid situations where the pile body and fixing device are incompatible, resulting in poor fixing effect and insecure fixing.

[0052] In the above three embodiments, the support mechanism 2 can be disassembled. When testing shorter foundation piles, the support mechanism 2 at the bottom of each support plate 101 can be removed, and then the fixing mechanism 1 can be directly fitted onto the outer wall of the short pile. The support plate 101 can be fixed to the ground, and the length of the first telescopic rod 102 can be adjusted. The first telescopic rod 102 can be used to drive the clamping block 106 close to the outer wall of the short pile, so that the flexible clamping sleeve 107 can flexibly fit with the outer wall of the short pile. This improves the adaptability of the device, allows it to fit irregular piles and inclined piles, and enables the foundation pile body 3 to be tested, reducing equipment installation errors.

[0053] When inspecting taller foundation piles, the insert block 205 installed on the top of the connecting plate 204 is inserted into the interior of the support plate 101, and the support plate 101 and the connecting plate 204 are connected by bolts to support the fixing mechanism 1 and increase the height of the fixing mechanism 1. After the connection is completed, the device is moved to the vicinity of the foundation pile body 3, the length of the second telescopic rod 202 is adjusted, and the fixing mechanism 1 is set above the foundation pile body 3. Then the height of the second telescopic rod 202 is adjusted, and the fixing mechanism 1 is set on the outer wall of the foundation pile body 3. Finally, the length of the first telescopic rod 102 is adjusted to fix the foundation pile body 3.

[0054] Support mechanism 2 is used to support and raise fixed mechanism 1. A nail plate 214 is fixedly installed at the bottom of support mechanism 2, which is then grounded. A second telescopic rod 202 and a reinforcing diagonal brace 203 are fixedly installed on the top of grounding support plate 201. The reinforcing diagonal brace 203 is fixedly connected to the second telescopic rod 202 to strengthen its support. A connecting plate 204 is fixedly installed at the telescopic end of the second telescopic rod 202. A mounting plate 206 is fixedly connected to one side of the connecting plate 204. A rotating shaft 207 is rotatably connected inside the mounting plate 206. A connecting seat 208 is fixedly installed on the outer wall of the rotating shaft 207. A fixed support rod 209 is installed at the bottom of the connecting seat 208. An extension support rod 210 is slidably connected inside the fixed support rod 209. A rotating base is fixedly installed at the bottom end of the extension support rod 210. 212, a rotating base support 213 is rotatably connected inside the rotating base 212. When the angle between the fixed support rod 209 and the mounting plate 206 changes, the grounding angle of the rotating base support 213 is adaptable, maximizing contact with the ground and improving the stability of the support. A nail plate 214 is fixedly installed at the bottom of the rotating base support 213 to contact the ground and improve the support strength. The support height is adjusted according to the height of the foundation pile. After the support height is adjusted, the position of the extension support rod 210 inserted into the fixed support rod 209 and the angle between the fixed support rod 209 and the mounting plate 206 are adjusted. The mounting plate 206 and the rotating shaft 207 are fixed with bolts. After the nail plate 214 installed at the bottom of the rotating base support 213 touches the ground, the length of the extension support rod 210 is fixed with a fixing ring 211 to increase the diagonal support and improve the overall stability.

[0055] In the above embodiments, when inspecting the outer wall of the pile body 3, a jack is placed on top of the bearing plate 4 to test the vertical static load of a single pile. A sensor detection group is fixedly installed on the support plate 7. While detecting the vertical static load of the pile, data such as the stress change of the pile and the displacement value that occurs during the bearing capacity test are monitored. The motor 117 drives the gear 115 to mesh with the gear ring 113 to adjust the position of the detection module and perform a comprehensive inspection of the pile body 3 to determine the pile body's mud inclusion, honeycomb, voids, overload, cracks, and other conditions.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foundation pile fixing device for testing foundation piles in building engineering, comprising a foundation pile body (3), a bearing plate (4), and a jack (5), characterized in that: The fixing device also includes a fixing mechanism (1), a support plate (7) and multiple sets of support mechanisms (2). The multiple sets of support mechanisms (2) are used to support the fixing mechanism (1). The fixing mechanism (1) is sleeved on the outside of the pile body (1) and fixes the pile body (1). The bearing plate (4) is located at the top of the pile body (3). The jack (5) is installed on the bearing plate (4). A flexible buffer plate (6) is provided between the bearing plate (4) and the pile body (3). The flexible buffer plate (6) is fixedly installed at the bottom of the bearing plate (4). The fixing mechanism (1) includes a fixing ring (108) and multiple clamping mechanisms. The multiple clamping mechanisms are arranged in a ring along the fixing ring (108). Each clamping mechanism includes a support plate (101), a first telescopic rod (102), a pressure seat (104), and a clamping assembly. The support plate (101) is located on the outside of the fixing ring (108). One end of the first telescopic rod (102) is fixed on the support plate (101), and its telescopic end extends to the inside of the fixing ring (108). The pressure seat (104) is located in the inner ring of the fixing ring (108). The pressure seat (104) is detachably installed on the telescopic end of the first telescopic rod (102). The clamping assembly is fixed on the side of the pressure seat (104) away from the first telescopic rod (102). The pallet (7) is located inside the support plate (101). A drive mechanism for controlling the rotation of the pallet (7) is also provided on the fixing mechanism (1). The drive mechanism includes a motor (117), a gear (115) and a gear ring (113). The pallet (7) is fixedly installed at the bottom of the gear ring (113). A rotating groove (112) is opened on the outer ring surface of the fixing ring (108). The gear ring (113) is rotatably installed in the rotating groove (112). The motor (117) is fixed on the top of one of the support plates (101). A through hole (114) is opened through the inside of the support plate (101). The gear (115) is rotatably installed in the through hole (114) and meshes with the gear ring (113). The output shaft of the motor (117) extends into the through hole (114) and is connected to the rotating shaft of the gear (115) to control the rotation of the gear (115), thereby driving the gear ring (113) and the pallet (7) to rotate around the pile body (3).

2. The foundation pile fixing device for foundation pile testing in building engineering according to claim 1, characterized in that: The number of the support mechanisms (2) matches the number of the support plates (101). Each set of support mechanisms (2) is detachably installed at the bottom of the corresponding support plate (101). Each set of support mechanisms (2) includes a ground support plate (201), a second telescopic rod (202), a connecting plate (204), and a fixed support rod (209). It is detachably connected to the corresponding support plate (101) through the connecting plate (204). The second telescopic rod (202) is located between the connecting plate (204) and the ground support plate (201). One end of the fixed support rod (209) is hinged to the outside of the connecting plate (204). An extension support rod (210) is slidably connected inside the fixed support rod (209). A rotating bottom support (213) is provided at the bottom of the extension support rod (210).

3. The foundation pile fixing device for foundation pile testing in building engineering according to claim 1 or 2, characterized in that: The fixing mechanism (1) also includes a connecting ring (109), which is located above the fixing ring (108) and connected to the fixing ring (108). The pressure plate (4) is located on top of the connecting ring (109), and the thickness of the flexible buffer plate (6) is 20-50 mm. The first telescopic rod (102) of each clamping mechanism extends from between the connecting ring (109) and the fixing ring (108) into the inner ring of the fixing ring (108). An installation hole (110) is provided at the position where the first telescopic rod (102) passes through the connecting ring (109) and the fixing ring (108). The first telescopic rod (102) is inserted into the installation hole (110), and a protective sleeve (111) is fixedly installed inside the installation hole (110).

4. A foundation pile fixing device for foundation pile testing in building engineering according to claim 1 or 2, characterized in that: A drive shaft (118) is fixedly installed at the output end of the motor (117). The drive shaft (118) is inserted into the inside of the support plate (101). A slot (116) is opened on the top of the gear (115). A snap-fit ​​block (119) is fixedly installed on the outer wall of the drive shaft (118). The snap-fit ​​block (119) snaps into the slot (116). The slot (116) and the snap-fit ​​block (119) are connected by an interference fit.

5. A foundation pile fixing device for foundation pile testing in building engineering according to claim 1 or 2, characterized in that: The clamping mechanism is provided in four groups, which are equidistantly arranged on the fixed ring (108). The telescopic end of the first telescopic rod (102) of each clamping mechanism is fixedly installed with a connecting block (103). The pressure seat (104) has a connecting groove (105) inside. The connecting block (103) is set inside the connecting groove (105) and fixedly connected to the pressure seat (104) with bolts.

6. A foundation pile fixing device for foundation pile testing in building engineering according to claim 1 or 2, characterized in that: The clamping assembly includes a clamping block (106) and a flexible sleeve (107). The clamping block (106) is fixedly installed on one side of the pressure seat (104), and the flexible sleeve (107) is fixedly installed on the clamping surface of the clamping block (106). The clamping block (106) is arc-shaped or straight.

7. The foundation pile fixing device for foundation pile testing in building engineering according to claim 2, characterized in that: The top of the grounding support plate (201) is fixedly installed with a reinforcing diagonal brace (203). The reinforcing diagonal brace (203) is provided in two sets, symmetrically arranged on both sides of the second telescopic rod (202), and the other end of each reinforcing diagonal brace (203) is fixedly connected to the outer wall of the second telescopic rod (202). The first telescopic rod (102) and the second telescopic rod (202) extend and retract synchronously through Hall sensors.

8. The foundation pile fixing device for foundation pile testing in building engineering according to claim 2, characterized in that: The top of the connecting plate (204) is fixedly installed with a plug (205), and the bottom of the support plate (101) is provided with a corresponding slot. The plug (205) of each connecting plate (204) is inserted into the slot at the bottom of the corresponding support plate (101), and the support plate (101) and the connecting plate (204) are fixedly connected by bolts. A mounting plate (206) is fixedly installed on one side of the connecting plate (204). A rotating shaft (207) is rotatably connected inside the mounting plate (206). A connecting seat (208) is fixedly installed on the outer wall of the rotating shaft (207). The upper end of the fixed support rod (209) is installed at the bottom of the connecting seat (208), and the lower end is slidably connected to an extension support rod (210).

9. The foundation pile fixing device for foundation pile testing in building engineering according to claim 2, characterized in that: The outer wall of the fixed support rod (209) is fitted with a fixing ring (211), which is fixed to the outer wall of the fixed support rod (209) by bolts. The bottom end of the extension support rod (210) is fixedly installed with a rotating base (212), and the rotating base (212) is rotatably connected to a rotating bottom support (213). The bottom of the rotating bottom support (213) and the ground support plate (201) are both fixedly installed with nail plates (214).

10. The foundation pile fixing device for foundation pile testing in building engineering according to claim 2, characterized in that: The grounding support plate (201) includes an adjustable support (2011), a fixing bolt (2012) is rotatably connected inside the adjustable support (2011), a supporting base plate (2013) is sleeved on the outer wall of the fixing bolt (2012), a threaded groove (2014) is opened on the outer wall of the fixing bolt (2012), a nut (2015) is threadedly connected to the outer wall of the fixing bolt (2012), a pad (2016) is fixedly installed on one side of the adjustable support (2011), and the fixing bolt (2012) penetrates the pad (2016).

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