Pile repairing bearing capacity detection device
By using ground anchors and reaction frames to connect jacks in existing buildings, combined with benchmark components and displacement detection equipment, the problem of space constraints in existing buildings for traditional detection methods has been solved, and efficient and accurate pile bearing capacity detection has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional methods for testing the bearing capacity of pile foundations are limited by building height, site constraints, and the limitations of lifting and transporting counterweights in existing buildings, making them unsuitable for testing the bearing capacity of supplementary piles.
A device for testing the bearing capacity of supplementary piles is designed. It utilizes the existing building's ground anchors and reaction frames, and reliably connects to the reaction frames via jacks. Combined with reference components and displacement detection equipment, it enables the testing of the bearing capacity of supplementary piles.
No additional complex reaction devices are required, making full use of existing construction resources, improving testing efficiency, ensuring the accuracy and reliability of testing, and solving the problem of limited indoor space.
Smart Images
Figure CN224063536U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to building engineering detection technical field, concretely relates to a pile supplementing bearing capacity detection device. BACKGROUND
[0002] In the pile foundation bearing capacity quality acceptance process of building engineering, when the use nature, building function is changed due to the unforceable factor in the existing building construction process, the structure form and design need to be changed, such as through the form of pile supplementing, increase the overall reliability of structure to meet the relevant bearing capacity requirements of relevant design change.
[0003] The traditional pile foundation bearing capacity detection method generally is through the counterweight on the detection pile upper portion and is set up as counterforce, and the loading jack is passed through the crossbeam and is transmitted to the counterweight; this method is more for the pile foundation detection in the new building construction process, hoisting is convenient, site is spacious, meets the counterweight stacking condition. However, the use nature, building function is changed due to the unforceable factor in the existing building construction process, the structure form and design need to be changed, such as through the form of pile supplementing, increase the overall reliability of structure, when the pile supplementing bearing capacity detection adopts the traditional stacking method to carry out the bearing capacity detection, is limited to the building height, site is limited and the counterweight is limited in the building interior hoisting transportation, and it is difficult to be applicable to the pile supplementing bearing capacity detection in the existing building indoor.
[0004] Therefore, it is very necessary to design a device that can detect the bearing capacity of pile supplementing in the reinforcement and reconstruction process of existing buildings. SUMMARY
[0005] The utility model discloses to aim at the deficiency of prior art, provide a kind of pile supplementing bearing capacity detection device, to detect the bearing capacity of pile supplementing in the reinforcement and reconstruction process of existing buildings.
[0006] The technical scheme adopted by the utility model is as follows: a kind of pile supplementing bearing capacity detection device, including counterforce frame, counterforce crossbeam, load loading mechanism and displacement detection equipment;
[0007] The counterforce frame is arranged above the pile supplementing to be detected, and the bottom of the two sides of the counterforce frame is connected with the ground;
[0008] The counterforce crossbeam is horizontally arranged, and the two ends are connected with the counterforce frame;
[0009] The upper end of the load loading mechanism is installed on the counterforce crossbeam;The driving end of the load loading mechanism is connected with the upper end of the pile supplementing through the lower pad;
[0010] The displacement detection equipment is fixed on the reference assembly, and the measuring end of the displacement detection equipment is connected with the upper surface of the lower pad.
[0011] According to the above scheme, the pile bearing capacity testing device is also equipped with a reference component, which includes a reference pile and a reference beam; there are two sets of reference piles, which are respectively set on both sides of the reaction frame, and the lower end of the reference pile is fixed to the ground; the reference beam is horizontal, and the two ends of the reference beam are respectively connected to the two reference piles; the displacement detection device is fixed on the reference beam, and the displacement detection device is located above the lower pad, and the measuring end of the displacement detection device is in contact with the upper surface of the lower pad.
[0012] According to the above scheme, the load loading mechanism is a jack.
[0013] According to the above scheme, the displacement detection device is a displacement gauge.
[0014] According to the above scheme, the reaction frame includes two columns on both sides of the supplementary pile, and a connecting beam connecting the tops of the two columns; the two ends of the reaction beam are respectively connected to the two columns.
[0015] According to the above scheme, the lower end of the column is provided with a base, and the base is fixed to the ground by ground anchors.
[0016] According to the above scheme, the upper end of the jack is connected to the reaction beam through an upper pad plate.
[0017] According to the above scheme, the pile bearing capacity testing device also includes a controller, which is connected to the displacement gauge and the jack respectively.
[0018] According to the above scheme, the upper pad is a steel pad.
[0019] According to the above scheme, the lower pad is a steel pad.
[0020] The beneficial effects of this utility model are as follows:
[0021] 1. This utility model utilizes the ground anchor and reaction frame used in the pile supplementation construction during the reinforcement and renovation of existing buildings to reliably connect the jacks to the reaction frame, thereby enabling the detection of the bearing capacity of the pile supplementation during the reinforcement of existing buildings. Compared with traditional detection methods, it eliminates the need for additional complex reaction devices, solves the problems of limited indoor space, insufficient floor height, and narrow site in existing buildings, and makes full use of existing construction resources, avoids repeated investment, and improves detection efficiency.
[0022] 2. The present invention features a rigid upper and lower pad to ensure minimal deformation during load application, meeting the stiffness requirements for testing; the reference pile and reference beam provide stable and sufficiently rigid support, preventing displacement during static loading; the displacement gauge, jack, and controller ensure the accuracy and reliability of the testing system.
[0023] 3. This utility model has a reasonable structural design and is easy to operate. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.
[0025] The components include: 1. reaction frame; 2. reaction beam; 3. upper pad; 4. lower pad; 5. jack; 6. supplementary pile; 7. ground anchor; 8. reference pile; 9. reference beam; 10. displacement gauge; 11. base. Detailed Implementation
[0026] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.
[0027] Example 1
[0028] like Figure 1 The pile bearing capacity testing device shown is specifically a pile bearing capacity testing device for the reinforcement and renovation of existing buildings, including a reaction frame 1, a reaction beam 2, a load loading mechanism and a displacement detection device;
[0029] The reaction frame 1 is set above the pile 6 to be tested, and the bottom sides of the reaction frame 1 are connected to the ground.
[0030] The reaction beam 2 is arranged horizontally and connected to the reaction frame 1 at both ends;
[0031] The upper end of the load loading mechanism is installed on the reaction beam 2; the lower end of the load loading mechanism is the driving end, which is vertically downward and connected to the upper end of the pile 6 through the lower pad 4.
[0032] The displacement detection device is fixed on the reference assembly, and the measuring end of the displacement detection device is in contact with the upper surface of the lower pad 4.
[0033] In this invention, the lower pad 4 is disposed on the top of the supplementary pile 6, and the load loading mechanism applies a vertical load to the supplementary pile 6 through the lower pad 4; the displacement detection device is used to detect the vertical displacement of the supplementary pile 4.
[0034] Preferably, the pile bearing capacity testing device is further provided with a reference component, which includes a reference pile 8 and a reference beam 9; there are two sets of reference piles 8, which are respectively set on both sides of the reaction frame 1, and the lower end of the reference pile 8 is fixed to the ground; the reference beam 9 is horizontal, and the two ends of the reference beam 9 are respectively connected to the two reference piles 8; the displacement detection device is fixed on the reference beam 9, and the displacement detection device is located above the lower pad 4, and the measuring end of the displacement detection device is in contact with the upper surface of the lower pad 4.
[0035] In this invention, the lower end of the reference pile 8 can be inserted below the ground, spaced a certain distance from the supplementary pile 6, and has sufficient rigidity to ensure that the displacement detection equipment erected on the reference beam 9 is not affected by soil disturbance during the loading process of the supplementary pile 6.
[0036] Preferably, the load loading mechanism is a jack 5. The upper end of the jack 5 is connected to the bottom of the reaction beam 2 through the upper pad 3, and the lower end of the jack 5 is the driving end, which is connected to the top of the supplementary pile 6 through the lower pad 4 to apply a vertical load to the supplementary pile 6.
[0037] In this utility model, both the upper pad 3 and the lower pad 4 are steel pads.
[0038] Preferably, the displacement detection device is a displacement meter 10, specifically a laser displacement meter, used to detect the displacement of the supplementary pile 6.
[0039] Preferably, the reaction frame 1 includes two columns on both sides of the supplementary pile 1, and a connecting beam connecting the tops of the two columns; the lower end of the column is provided with a base 11, and the base 11 is fixed to the ground by a ground anchor 7; the two ends of the reaction beam 2 are respectively connected to the two columns.
[0040] In this invention, the reaction frame 1 provides support for the entire device. The reaction frame 1 has round holes that fit the pins, and the end of the reaction beam 2 is connected to the reaction frame 1 through the pins. Multiple sets of round holes are provided on the reaction frame 1 along the height direction, and the reaction beam 2 can be arranged according to the specific testing requirements of the pile 6 to ensure that there is enough space for the jack 5 to be installed.
[0041] Preferably, the pile bearing capacity testing device further includes a controller, which is connected to the displacement gauge 10 and the jack 5 respectively. The displacement information measured by the displacement gauge 10 is transmitted to the controller. The controller receives the displacement information and controls the jack 5 to perform graded loading and unloading on the pile 6.
[0042] Example 2
[0043] This embodiment uses the pile bearing capacity testing device described above to test the bearing capacity of piles added during the construction of existing buildings. The specific method is as follows:
[0044] When conducting a static load test on the supplementary pile 6, according to the test design, oil is supplied to the jack 5. The top of the jack 5 applies an upward force to the reaction beam 2, while the force at the bottom of the jack 5 is transferred to the supplementary pile 6 through the lower pad plate 4. The displacement gauge 10 records the displacement of the supplementary pile 6 under each load level. The compression test procedure can be referred to the relevant specifications, which will not be elaborated here.
[0045] In this invention, the upper pad 3 and lower pad 4 are made of steel plates with smooth surfaces and sufficient rigidity, making them resistant to significant deformation under external forces, thus ensuring the required deformation and rigidity during load application. The ground anchor 7 serves as a reaction anchoring structure during the pile replacement process of existing buildings, providing sufficient reaction force to the pile replacement frame. When the bearing capacity of the existing building's pile replacement is tested, the reaction support with the ground anchor as the fixing point provides sufficient reaction force to ensure the static load bearing capacity limit value meets the requirements. The reference pile 8 and reference beam 9 are reliably supported, possess sufficient rigidity, and do not shift during static loading. The accuracy and quality of the displacement gauge 10, jack 5, and controller meet the relevant testing requirements for the bearing capacity testing of the pile replacement 6, ensuring the accuracy and reliability of the testing system. The reaction beam 2 and reaction frame 1 have sufficient rigidity, are not prone to deformation, and can guarantee the rigidity and deformation requirements for bearing capacity testing, ensuring the accuracy and reliability of the test data.
[0046] This utility model makes full use of the ground anchor 7 and reaction frame 1 system in the pile supplementation construction during the reinforcement and renovation of existing buildings. By utilizing the reaction anchor points in the existing building pile supplementation process, the reaction support and reaction frame 1 are effectively connected through the existing ground anchor points. The foundation pile and the jack 5 are tightly connected and matched through the upper pad 3 and the lower pad 4. By reliably connecting the jack 5 and the reaction frame 1, the jack 5 is loaded and unloaded in stages by the controller, thereby realizing the detection of the bearing capacity of the supplemented pile. This makes more efficient use of the existing site conditions to complete the relevant pile supplementation bearing capacity detection work.
[0047] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "in the base" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "fixed," "connected," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Content not described in detail in this specification belongs to the prior art known to those skilled in the art.
[0049] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the 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. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A pile supplement bearing capacity detection device, characterized in that, The device comprises a counterforce frame, a counterforce beam, a load loading mechanism and a displacement detection device. The counterforce frame is arranged above the pile to be detected, and the bottom of the two sides of the counterforce frame is connected with the ground. The counterforce beam is horizontally arranged, and the two ends thereof are connected with the counterforce frame. The upper end of the load loading mechanism is installed on the counterforce beam, and the driving end of the load loading mechanism is connected with the upper end of the pile through a lower base plate. The displacement detection device is fixed on the reference assembly, and the measuring end of the displacement detection device is in contact with the upper surface of the lower base plate.
2. The pile bearing capacity detection device according to claim 1, wherein The pile bearing capacity detection device further comprises a reference assembly, and the reference assembly comprises a reference pile and a reference beam.
3. The pile bearing capacity detection device according to claim 1 or 2, wherein The load loading mechanism is a jack.
4. The pile bearing capacity detection device according to claim 3, wherein The displacement detection device is a displacement meter.
5. The pile bearing capacity detection device according to claim 4, wherein The counterforce frame comprises two vertical columns arranged on the two sides of the pile and a connecting beam connecting the top of the two vertical columns.
6. The pile bearing capacity detection device according to claim 5, wherein The lower end of the vertical column is provided with a base, and the base is fixed with the ground through a ground anchor.
7. The pile bearing capacity detection device according to claim 6, wherein The upper end of the jack is connected with the counterforce beam through an upper base plate.
8. The pile bearing capacity detection device according to claim 7, wherein The pile bearing capacity detection device further comprises a controller connected with the displacement meter and the jack.
9. The pile bearing capacity detection device according to claim 7, wherein The upper base plate is a steel base plate.
10. The pile bearing capacity detection device according to claim 1, wherein The lower base plate is a steel base plate.