CN211080332U - Foundation pile detects displacement measurement device for static test - Google Patents
Foundation pile detects displacement measurement device for static test Download PDFInfo
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- CN211080332U CN211080332U CN201921558337.9U CN201921558337U CN211080332U CN 211080332 U CN211080332 U CN 211080332U CN 201921558337 U CN201921558337 U CN 201921558337U CN 211080332 U CN211080332 U CN 211080332U
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Abstract
The utility model discloses a foundation pile detects displacement measurement device for static test belongs to foundation pile static test field. It includes the test pile, and the test pile is installed in the foundation ditch, still includes steel sheet and steel pole, the steel pole is installed in the outer wall of test pile along vertical direction, and its top is equipped with the steel sheet of horizontal distribution and stretches out more than ground. The utility model discloses an it is more than ground to utilize the steel sheet on the steel pole to draw displacement measurement point to can effectively avoid appearing the higher problem that causes displacement table bubble water easily of ground water level, and solved current static test pile bolck displacement measurement point and arranged the current situation that generally is not conform to "building engineering foundation pile detection technical specification", establish the basis for static test's success.
Description
Technical Field
The utility model belongs to foundation pile static test field, more specifically says, relates to a foundation pile detects displacement measurement device for static test.
Background
The pile foundation detection mainly comprises the detection of the bearing capacity and the integrity of the pile foundation, and the detection methods mainly comprise a static load test, a core drilling method, a low strain method, a high strain method, a sound wave transmission method and the like. The static load test is a test method for determining the corresponding vertical compression bearing capacity of a single pile, the vertical uplift bearing capacity of the single pile or the horizontal bearing capacity of the single pile by applying vertical pressure, vertical uplift force or horizontal thrust on the top of the pile step by step and observing the settlement, uplift displacement or horizontal displacement of the top of the pile generated along with time. The static load test is one of the most direct and reliable methods for determining the bearing capacity of various foundation foundations such as pile foundation, composite foundation, natural foundation and the like, and the test pile settlement is generally measured by adopting a dial indicator or an electronic displacement meter.
The technical specification for detecting the foundation piles in the constructional engineering JGJ 106-: the settlement measuring plane of the single-pile vertical compression-resistant static load test is preferably arranged at a position 200mm below the pile top, and the measuring point is fixed on the pile body; the pulling quantity measuring point on the vertical uplift static load test of the single pile is suitable to be arranged on a pile body which is not less than 1 time of pile diameter below the pile top, and is not required to be arranged on a tensile reinforcing steel bar, and the large-diameter cast-in-place pile can be arranged on the concrete of the pile top surface on the inner side of a reinforcing cage. In the prior art, because the static load test is limited by field conditions, most of the static load test is completed before foundation excavation, and most of pile tops are below the ground. When a detection site is prepared, if foundation earthwork is integrally excavated, the cost is greatly increased, and the detection period is prolonged; if only part of the soil around the pile is excavated, a foundation pit for installing the reference pile and the reference beam can be formed, but when the ballast platform counterforce device is selected, the foundation pit soil can collapse, so that the reference pile and the reference beam can be disturbed. Because the displacement measuring device is located below the ground, when it rains during the static test or the ground water level is high, it may also cause the displacement meter to bubble water, thereby causing the test to fail. Therefore, at present, most of displacement measurement points of the single-pile vertical compression-resistant static load test are basically arranged on the bearing plate below the jack, and the displacement measurement points of the single-pile vertical compression-resistant static load test are directly arranged on pile top concrete or flanges, but the arrangement does not meet the requirements of the technical specification for detecting foundation piles in constructional engineering.
Through retrieval, relevant disclosures have been made on displacement measuring devices for static load tests.
If, chinese patent application No. 201820349043.4's application discloses a be applied to displacement measurement device of static test's pile body, including two semi-circular staple bolts, cavity loop bar and extension rod, two semi-circular staple bolt devices screw in the pile body through the screw, the square loop bar of 4 cavity of symmetric welding on the staple bolt, 4 external extension rods embolia the square loop bar of cavity, and screw the length of fixed extension rod and control extension rod with the screw knob of loop bar top, displacement measurement sensor can be erect to extension rod tip, reach and measure the pile body and subside the displacement purpose. Although this application can avoid causing destruction to the pile body when settling measuring device to ensure that displacement measuring device erects below the pile bolck 20cm, the extension rod of this application can only horizontally stretch out and draw back, can not adjust displacement measuring device's arrangement height, and when groundwater level is higher, still inevitably can have the problem of displacement table bubble water, thereby influence experimental result.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
The utility model aims at solving among the prior art displacement measurement device and being located the below ground usually, cause the problem of displacement table bubble water easily when groundwater level is higher, provide a foundation pile detects displacement measurement device for static test. The utility model discloses an it is above ground to draw forth displacement measurement point to can effectively avoid appearing the higher problem that causes displacement table bubble water easily of ground water level, and solved current static test pile bolck displacement measurement point and arranged the current situation that generally is not conform to "building engineering foundation pile detection technical specification", establish the basis for static test's success.
2. Technical scheme
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
the utility model discloses a foundation pile detects displacement measurement device for static test, including the test pile, the test pile is installed in the foundation ditch, still includes steel sheet and steel pole, the steel pole is installed in the outer wall of test pile along vertical direction, and its top is equipped with horizontal distribution's steel sheet and stretches out more than ground.
As the utility model discloses a foundation pile detects displacement measurement device for static test's improvement, the steel pole is installed in the outer wall of examination stake through the staple bolt.
As the utility model discloses a foundation pile detects displacement measurement device for static test's improvement, the staple bolt includes two semi-circular staple bolts, links to each other through the bolt between two semi-circular staple bolts, and the size of staple bolt and the big or small phase-match of test pile, and the internal surface of staple bolt is the frosting.
As the utility model discloses a foundation pile detects displacement measurement device for static test's improvement, the steel pole includes four, installs respectively through steel pole tool to lock symmetry on the staple bolt outer wall position that test pile quadrature diameter corresponds.
As the utility model discloses a foundation pile detects displacement measurement device for static test's improvement, the steel pole tool to lock links to each other with the staple bolt welding, and the inside of steel pole tool to lock has along vertical direction processing have with steel pole appearance size assorted link up the spout, the steel pole passes through the screw top and tightly installs in above-mentioned spout.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses a foundation pile detects displacement measurement device for static test, including the examination stake, still include steel sheet and steel pole, the steel pole is installed in the outer wall of examination stake along vertical direction, and its top is equipped with horizontal distribution's steel sheet and stretches out above ground, and more than ground has been drawn forth displacement measurement point through utilizing the steel sheet on the steel pole to can effectively avoid appearing the higher problem that causes displacement table bubble water easily of ground water level, and solved current static test stake top displacement measurement point and arranged and generally not conform to the current situation that "building engineering foundation pile detects technical specification".
(2) The utility model discloses a foundation pile detects displacement measurement device for static test, the steel pole is installed in the outer wall of examination stake through the staple bolt, and the internal surface of staple bolt is the frosting, through installing the staple bolt for the steel pole on the examination stake and establishing the internal surface of staple bolt as the frosting to the installation of the steel pole of being convenient for is dismantled and the symmetrical installation of displacement measurement table, makes simultaneously have sufficient frictional force between staple bolt and the examination stake body, further ensures that the staple bolt is fixed in the fastness of examination stake body.
(3) The utility model discloses a foundation pile detects displacement measurement device for static test, the steel pole is installed on the staple bolt through the even symmetry of steel pole tool to lock respectively, and the inside of steel pole tool to lock along vertical direction processing have with steel pole appearance size assorted link up the spout, the steel pole passes through the screw top and tightly installs in above-mentioned spout, controls the lift of steel pole through adjusting screw, has guaranteed that the lift of steel pole is simple and convenient to be convenient for draw the displacement measurement point to above-ground, establish the basis for the success of static test. Additionally, the utility model discloses a device required space is little, only needs the less scope soil in excavation pile week, has saved the cost, has subtracted the short detection cycle, and the device is simple, and the simple installation, and the suitability is strong, accords with displacement measuring point arrangement and displacement table symmetry arrangement requirement in the "foundation pile detection technical specification for building engineering", can scientific, directly perceived, accurate, truly react the pile bolck settlement volume.
Drawings
Fig. 1 is a schematic structural view of a displacement measuring device for a foundation pile detection static load test according to the present invention;
fig. 2 is an installation schematic diagram of the semicircular hoop of the present invention.
In the figure: 1. a bolt; 2. a steel bar lock; 3. hooping; 4. a steel plate; 5. a steel rod; 6. pile testing; 7. a ground surface; 8. and (6) foundation pit.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
As shown in fig. 1, the displacement measuring device for the foundation pile detection static load test in the embodiment comprises a test pile 6, wherein the test pile 6 is installed in a foundation pit 8, the displacement measuring device further comprises a steel plate 4 and a steel rod 5, the steel rod 5 is installed on the outer wall of the test pile 6 in the vertical direction, so that the installation height of a displacement measuring instrument can be adjusted, the top end of the steel rod 5 is welded with the horizontally distributed steel plate 4 and extends out of the ground 7, the steel plate 4 is square with the shape and size of 10mm × 10mm, the thickness of the steel plate is 2mm, the steel plate 4 is used as a displacement measuring platform of the static load test and is welded to the top end of the steel rod 5 and extends out of the ground 7, so that a displacement measuring point is led out of the ground 7, the problem that the displacement meter is easily soaked by high underground water level is effectively avoided, and the problem that the arrangement of the displacement measuring point of the pile top in the existing static load test is generally not in accordance with the building engineering foundation pile detection technical specification is solved.
Example 2
As shown in fig. 1 and fig. 2, the structure of the displacement measuring device for foundation pile detection static load test of the present embodiment is basically the same as that of embodiment 1, and the main differences are that: the steel pole 5 is installed on the outer wall of the test pile 6 through the hoop 3, the fixed position of the steel pole meets the position of a pile top displacement measuring point required by the technical specification for detecting foundation piles in constructional engineering, and the hoop 3 is used for installing the steel pole 5 on the test pile 6, so that the installation and the disassembly of the steel pole 5 and the symmetrical installation of a displacement measuring meter are facilitated. Staple bolt 3 includes two semi-circular staple bolts, places two semi-circular staple bolt openings in opposite directions and links to each other through bolt 1, and staple bolt 3's size and the 6 big or small phase-matchs of test pile, and the internal surface of staple bolt 3 is established to the frosting to guarantee to have sufficient frictional force between staple bolt 3 and the pile body of test pile 6, further ensure that staple bolt 3 fixes the fastness at the pile body of test pile.
Example 3
As shown in fig. 1 and fig. 2, the structure of the displacement measuring device for foundation pile detection static load test of the present embodiment is basically the same as that of embodiment 2, and the main differences are that: the steel pole 5 adopts square solid iron set to make, and one of them includes four altogether, installs respectively through steel pole tool to lock 2 symmetry on the staple bolt 3 outer wall position that 6 quadrature diameters of test pile correspond, can respectively install a steel pole tool to lock 2 in 45 positions and 135 positions of every semi-circular staple bolt outer wall from one end to can the symmetry install displacement measurement instrument, satisfy the requirement of building engineering foundation pile detection technical specification. The steel pole tool to lock 2 and staple bolt 3 welded connection, the inside processing of steel pole tool to lock 2 has along vertical direction with 5 appearance size assorted link up spouts of steel pole, steel pole 5 tightly installs in above-mentioned spout through the screw top, controls the lift of steel pole 5 through adjusting the screw. When the screw tightly pushes up with steel pole 5, the removal of steel pole 5 along vertical direction is restricted, when screw and steel pole 5 separation, steel pole 5 is portable along vertical direction to guaranteed that the lift of steel pole 5 is simple and convenient, made steel sheet 4 stretch out above ground 7 through the control screw, thereby be convenient for draw the displacement measurement point above ground 7, laid a foundation for the success of static load test. And because the displacement measuring point of the pile top of the displacement measuring device is below the ground, according to the requirements of 'detection technical specification of foundation piles in constructional engineering', a small range of soil around the pile is only needed to be excavated when the foundation pit 8 is excavated, and a space for installing the device is formed.
Claims (5)
1. The utility model provides a foundation pile detects displacement measurement device for static test, includes test pile (6), and install in foundation ditch (8) test pile (6), its characterized in that: the device is characterized by further comprising a steel plate (4) and a steel rod (5), wherein the steel rod (5) is installed on the outer wall of the test pile (6) in the vertical direction, the top end of the steel rod is provided with the horizontally distributed steel plate (4) and extends out of the ground (7), and a displacement measuring instrument is arranged on the steel plate (4).
2. The displacement measuring device for the foundation pile detection static load test according to claim 1, characterized in that: the steel rod (5) is installed on the outer wall of the test pile (6) through the hoop (3).
3. The displacement measuring device for the foundation pile detection static load test according to claim 2, characterized in that: the anchor ear (3) comprises two semicircular anchor ears which are connected through bolts (1), the size of the anchor ear (3) is matched with that of the test pile (6), and the inner surface of the anchor ear (3) is a frosted surface.
4. The displacement measuring device for the foundation pile detection static load test according to any one of claims 1 to 3, characterized in that: the steel pole (5) include four, install respectively through steel pole tool to lock (2) symmetry on staple bolt (3) outer wall position that the quadrature diameter of test pile (6) corresponds.
5. The displacement measuring device for the foundation pile detection static load test according to claim 4, characterized in that: the steel pole tool to lock (2) link to each other with staple bolt (3) welding, the inside of steel pole tool to lock (2) along vertical direction processing have with steel pole (5) appearance size assorted spout that link up, steel pole (5) are through screw top tight mounting in above-mentioned spout.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921558337.9U CN211080332U (en) | 2019-09-18 | 2019-09-18 | Foundation pile detects displacement measurement device for static test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921558337.9U CN211080332U (en) | 2019-09-18 | 2019-09-18 | Foundation pile detects displacement measurement device for static test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112200A (en) * | 2020-10-23 | 2020-12-22 | 福州大学 | Test device for fixing pile top and preventing pile top from deviating and installation method thereof |
| CN115387403A (en) * | 2022-08-12 | 2022-11-25 | 广州建设工程质量安全检测中心有限公司 | Detection device and detection method for integrity of existing foundation pile |
| CN118257303A (en) * | 2024-05-29 | 2024-06-28 | 四川文茂建设工程检测有限公司 | Pile foundation detection device and detection method for engineering detection |
-
2019
- 2019-09-18 CN CN201921558337.9U patent/CN211080332U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112200A (en) * | 2020-10-23 | 2020-12-22 | 福州大学 | Test device for fixing pile top and preventing pile top from deviating and installation method thereof |
| CN115387403A (en) * | 2022-08-12 | 2022-11-25 | 广州建设工程质量安全检测中心有限公司 | Detection device and detection method for integrity of existing foundation pile |
| CN115387403B (en) * | 2022-08-12 | 2024-02-27 | 广州建设工程质量安全检测中心有限公司 | Detection device and detection method for integrity of existing foundation pile |
| CN118257303A (en) * | 2024-05-29 | 2024-06-28 | 四川文茂建设工程检测有限公司 | Pile foundation detection device and detection method for engineering detection |
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