CN219621846U - Quick connection counterforce device for pile foundation bearing capacity test - Google Patents
Quick connection counterforce device for pile foundation bearing capacity test Download PDFInfo
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- CN219621846U CN219621846U CN202320724164.3U CN202320724164U CN219621846U CN 219621846 U CN219621846 U CN 219621846U CN 202320724164 U CN202320724164 U CN 202320724164U CN 219621846 U CN219621846 U CN 219621846U
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- main beam
- bearing capacity
- pile foundation
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Abstract
A quick connection counterforce device for pile foundation bearing capacity test comprises test piles, jacks, main beams, two secondary beams and four anchor piles; the jack is arranged at the center of the top of the test pile, the main beam is arranged at the end part of the ejector rod of the jack, and the end part of the ejector rod of the jack is supported at the middle part of the main beam; two secondary beams are placed at two end parts of the main beam, the end parts of the main beam are supported at the middle parts of the secondary beams, and the two secondary beams are symmetrically arranged about the center of the main beam; in summary, when the pile foundation bearing capacity device is assembled and installed, the combined connection of the existing device and the anchor pile and the combined fixation between the existing devices can be realized without the need of steel bar welding, and the combined components can be recycled, so that the problems of long installation time, high manufacturing cost, high risk and resource waste in the traditional installation method are avoided, and the pile foundation bearing capacity device has good use effect and popularization value.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering, and particularly relates to a quick connection counterforce device for pile foundation bearing capacity test.
Background
The pile foundation static load test is a technology applied to engineering for detecting the bearing capacity of the pile foundation, and is the most accurate and reliable test method in the aspect of determining the ultimate bearing capacity of a single pile. As a judgment whether a certain dynamic load test method is mature or not, the comparison error of static load test results is used as a basis. Therefore, each foundation design process specification lists a single pile static load test into the primary position. The test method adopted in the pile foundation static load test mainly comprises an anchor pile method, a pile loading method and a self-balancing method, wherein the anchor pile method is easy to operate, convenient to transport and convenient to test.
In the current anchor pile method for pile foundation site load test, the anchor pile and the counter force device are connected by adopting an anchor rib connection method, and the anchor rib are connected by adopting a welding mode, but when the loading load is large, the anchor rib is subjected to shearing force, so that brittle failure is easy to occur, dangerous accidents are easy to cause, the welding process is long in time consumption, the improvement of construction efficiency is not facilitated, the possibility of recycling the anchor rib after use is small, and the phenomenon of resource waste is easy to occur.
Disclosure of Invention
The utility model aims to provide a quick connection counterforce device for pile foundation bearing capacity test, which solves the technical problems that in the prior art, the anchor pile and the counterforce device are connected by adopting an anchor rib connection method, so that dangerous accidents are easy to cause, the construction efficiency is low, and the anchor rib cannot be recycled.
In order to solve the technical problems, the utility model adopts the following technical scheme: a quick connection counterforce device for pile foundation bearing capacity test comprises test piles, jacks, main beams, two secondary beams and four anchor piles;
the jack is arranged at the center of the top of the test pile, the main beam is arranged at the end part of the ejector rod of the jack, and the end part of the ejector rod of the jack is supported at the middle part of the main beam;
two secondary beams are placed at two end parts of the main beam, the end parts of the main beam are supported at the middle parts of the secondary beams, and the two secondary beams are symmetrically arranged about the center of the main beam;
the two ends of each secondary beam are respectively provided with a counterforce steel box, and the two counterforce steel boxes are symmetrically arranged about the center of the secondary beam; the reaction steel box is connected with two rows of first anchor bars, and the end part of the secondary beam is positioned between the two rows of first anchor bars;
the four anchor piles are respectively positioned right below the counterforce steel boxes at the end parts of the two secondary beams; two rows of second anchor bars are fixed on the anchor pile and are connected with two rows of first anchor bars on the corresponding counterforce steel box through a plurality of connecting sleeves respectively.
Further, a second anchor bar is placed in the anchor pile during pouring.
Further, the connecting sleeve is connected with the first anchor bar and the second anchor bar in a threaded mode.
Further, reserved anchor bar pore canals are correspondingly formed in the top and the bottom of the counterforce steel box, the reserved anchor bar pore canals are used for the first anchor bars to penetrate through, and the end parts of the first anchor bars are provided with anchor sleeves in a threaded mode.
Further, a web plate is fixed inside the reaction steel box.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the bearing capacity test is carried out on the pile foundation of the existing building, the static load test is carried out on the test pile by utilizing the anchor pile to provide the counter force, and the traditional welding mode is abandoned when the counter force device is assembled, so that the counter force device can be effectively installed, and the problem of long installation time is solved;
(2) According to the utility model, the first anchor bar and the second anchor bar are made of finish-rolled screw steel, and the connecting sleeve and the anchoring sleeve are made of finish-rolled steel pipes, so that the strength is high, repeated recycling can be performed after the test is finished, the resource waste is effectively reduced, and the economic and reliable effects are achieved;
(3) According to the utility model, the traditional U-shaped steel bar is replaced by the detachable finish rolling deformed steel bar, so that the shearing force action of the secondary beam on the anchor bar in the loading process is effectively eliminated, the test safety is ensured, and the method has good use effect and popularization value.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a perspective view of a quick connect reaction device for pile foundation load bearing capacity testing of the present utility model;
FIG. 2 is a top view of a quick connect reaction device for pile foundation load bearing test of the present utility model;
FIG. 3 is a side view of a quick connect reaction device for pile foundation load bearing testing of the present utility model;
FIG. 4 is a side view of another view of a quick connect reaction device for pile foundation load bearing testing of the present utility model;
fig. 5 is a perspective view of the reaction steel box;
FIG. 6 is a top view of the reaction steel box;
FIG. 7 is a cross-sectional view taken at A-A of FIG. 6.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present utility model is described in further detail below with reference to examples.
As shown in fig. 1 to 7, the specific embodiment of the quick connection reaction device for pile foundation bearing capacity test provided by the utility model is as follows:
the utility model relates to a quick connection counterforce device for pile foundation bearing capacity test, which is used for the pile foundation static load test of the existing building and belongs to the technical field of pile foundation detection, and the device comprises a test pile 1, a jack 2, a main beam 3, two secondary beams 4 and four anchor piles 5;
specifically, the jack 2 is placed at the center of the top of the test pile 1, the main beam 3 is placed at the end part of the ejector rod of the jack 2, and the end part of the ejector rod of the jack 2 is supported at the middle part of the main beam 3; two secondary beams 4 are placed at two ends of the main beam 3, the ends of the main beam 3 are supported at the middle position of the secondary beams 4, and the two secondary beams 4 are symmetrically arranged about the center of the main beam 3;
the two ends of each secondary beam 4 are respectively provided with a counterforce steel box 6, the two counterforce steel boxes 6 are symmetrically arranged about the center of the secondary beam 4, the counterforce steel boxes 6 are provided with two rows of first anchor bars 7, and the end parts of the secondary beams 4 are positioned between the two rows of first anchor bars 7; the first anchor 7 is installed as follows: the top and the bottom of the counterforce steel box 6 are correspondingly provided with reserved anchor bar pore canals 8, the reserved anchor bar pore canals 8 are used for the first anchor bars 7 to pass through, the end threads of the first anchor bars 7 are provided with anchor sleeves 9, and the first anchor bars 7 are fixedly arranged on the counterforce steel box 6 through the anchor sleeves 9.
The four anchor piles 5 are respectively positioned right below the counterforce steel boxes 6 at the end parts of the two secondary beams 4; two rows of second anchor bars 10 are fixed on the anchor pile 5, the second anchor bars 10 are placed in the anchor pile 5 during pouring, and the two rows of second anchor bars 10 are respectively connected with the two rows of first anchor bars 7 on the corresponding counterforce steel boxes 6 through a plurality of connecting sleeves 11.
Preferably, the connecting sleeve 11 connects the first anchor bar 7 and the second anchor bar 10 by means of threads; the first anchor bar 7 and the second anchor bar 10 are made of finish-rolled deformed steel bars; the connecting sleeve 11 and the anchoring sleeve 9 are made of finish rolled steel pipes.
Preferably, the web 12 is further fixed inside the reaction steel box 6, and the web 12 can improve the stress born by the reaction steel box 6, so that the reaction steel box 6 is not easy to deform.
A quick connection method of a quick connection counterforce device for pile foundation bearing capacity test comprises the following steps:
s1, determining a test pile 1 which needs to be subjected to static load test, and measuring and positioning the test pile on site;
s2, cutting off the top of the test pile 1, wherein the cutting off height meets the height requirement required by the installation of the jack 2;
s3, placing the jack 2 at the top of the test pile 1, and ensuring that the jack 2 coincides with the axial direction of the test pile 1;
s4, installing the main beam 3 at the end part of the ejector rod of the jack 2, so that the axis of the jack 2 passes through the center of the main beam 3;
s5, connecting the first anchor bar 7 with the second anchor bar 10 inserted into the anchor pile 5 by using a connecting sleeve 11;
s6, respectively placing two secondary beams 4 at two ends of the main beam 3, wherein the secondary beams 4 are perpendicular to the main beam 3, the two secondary beams 4 are symmetrically arranged about the center of the main beam 3, and the end parts of the main beam 3 are supported at the middle positions of the secondary beams 4;
s7, placing a counterforce steel box 6 at the end part of the secondary beam 4, enabling the first steel bars to penetrate through the corresponding reserved anchor bar pore channels 8, and then fixing the first anchor bars 7 and the counterforce steel box 6 by adopting the anchor sleeves 9.
It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A pile foundation bearing capacity test's quick connect reaction device, its characterized in that: the device comprises a test pile, a jack, a main beam, two secondary beams and four anchor piles;
the jack is arranged at the center of the top of the test pile, the main beam is arranged at the end part of the ejector rod of the jack, and the end part of the ejector rod of the jack is supported at the middle part of the main beam;
two secondary beams are placed at two end parts of the main beam, the end parts of the main beam are supported at the middle parts of the secondary beams, and the two secondary beams are symmetrically arranged about the center of the main beam;
the two ends of each secondary beam are respectively provided with a counterforce steel box, and the two counterforce steel boxes are symmetrically arranged about the center of the secondary beam; the reaction steel box is connected with two rows of first anchor bars, and the end part of the secondary beam is positioned between the two rows of first anchor bars;
the four anchor piles are respectively positioned right below the counterforce steel boxes at the end parts of the two secondary beams; two rows of second anchor bars are fixed on the anchor pile and are connected with two rows of first anchor bars on the corresponding counterforce steel box through a plurality of connecting sleeves respectively.
2. The quick connect reaction force device for pile foundation load bearing capacity test of claim 1, wherein: and placing a second anchor bar when pouring in the anchor pile.
3. The quick connect reaction force device for pile foundation load bearing capacity test of claim 2, wherein: the connecting sleeve is connected with the first anchor bar and the second anchor bar in a threaded mode.
4. A quick connect reaction force device for pile foundation load bearing capacity testing as defined in claim 3 wherein: the top and the bottom of the counterforce steel box are correspondingly provided with reserved anchor bar pore canals, the reserved anchor bar pore canals are used for the first anchor bars to pass through, and the end threads of the first anchor bars are provided with anchor sleeves.
5. The quick connect reaction force device for pile foundation load bearing capacity test of claim 4, wherein: the web plate is fixed in the counterforce steel box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320724164.3U CN219621846U (en) | 2023-04-04 | 2023-04-04 | Quick connection counterforce device for pile foundation bearing capacity test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320724164.3U CN219621846U (en) | 2023-04-04 | 2023-04-04 | Quick connection counterforce device for pile foundation bearing capacity test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219621846U true CN219621846U (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320724164.3U Active CN219621846U (en) | 2023-04-04 | 2023-04-04 | Quick connection counterforce device for pile foundation bearing capacity test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219621846U (en) |
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2023
- 2023-04-04 CN CN202320724164.3U patent/CN219621846U/en active Active
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