CN214530815U - Uplift pile uplift resistance detection test connecting component - Google Patents
Uplift pile uplift resistance detection test connecting component Download PDFInfo
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- CN214530815U CN214530815U CN202022848691.4U CN202022848691U CN214530815U CN 214530815 U CN214530815 U CN 214530815U CN 202022848691 U CN202022848691 U CN 202022848691U CN 214530815 U CN214530815 U CN 214530815U
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Abstract
The utility model discloses an uplift pile uplift force detection test connecting component, including uplift pile, steel sheet, biography power component, experimental roof beam, the uplift pile is pour in the stake hole, has arranged in the uplift pile to expose many main muscle of uplift pile upper end, and the one end welding that main muscle exposes the uplift pile has the hook component, and the both ends of biography power component can be dismantled with the bottom surface of experimental roof beam and the top surface of steel sheet respectively and be connected, and experimental roof beam is shelved on supporting the mound and is separated with the ground interval outside the stake hole, is equipped with the jack that the uplift pile power was applyed to the uplift pile between experimental roof beam and the ground, and the uplift pile hangs on the steel sheet through the hook component. During construction, the perfect detection state that the upper non-effective pile length is a hollow pile is kept, and the problem that the negative friction resistance of the non-effective pile length influences the detection result is effectively solved; adopt recoverable power transmission component to carry out the long anti-pulling force of effective stake simultaneously and detect, compare in the current solution construction convenience of market, saving engineering cost that can be very big and effectively practiced thrift the void region pile body filler material.
Description
Technical Field
The utility model relates to a technical field of uplift pile, concretely relates to uplift pile uplift resistance detection test connecting elements.
Background
The uplift pile is widely applied to uplift of large basements, uplift of high-rise buildings, uplift of offshore wharf platforms, anchor pile foundations of suspension bridges and cable-stayed bridges, pile foundations of large ship dock floors, anchor pile foundations in static load test piles and the like. Refers to piles driven to offset the buoyancy of water in soil to the underground structure of a building project if there is a part of the underground structure below the water content of the surrounding soil. In the prior art, an uplift test pile experiment needs to be carried out before the construction of an uplift pile engineering pile, and if the uplift resistance of a test pile meets the design requirement, the engineering pile can adopt the pile type during construction.
The upper end of the pile body of the uplift pile is equal to the height of the foundation part of a basement, a building basement, a wharf platform and a bridge, but the construction involves digging a pit on the ground or building a cofferdam on the water surface, then pumping water in the cofferdam, and then moving a pile driver into a construction site for piling.
The length of the general non-effective pile is 5-20 m, if the main reinforcement in the pile body is directly lengthened to expose the length of the effective pile, the main reinforcement is connected with the force measuring device, and because the exposed main reinforcement section loses the coating of the poured concrete, the longer the exposed main reinforcement section is, the weaker the tensile strength which can be born by the exposed main reinforcement is than the tensile strength which can be born by the pile body, and therefore, the force measuring device has inaccurate result when directly detecting the uplift force of the uplift pile through the main reinforcement exposed section with longer length. Therefore, in the traditional uplift force experiment of the uplift pile, if the non-effective pile section of the uplift pile needs to be poured as shown in fig. 1, only the short main reinforcement is exposed, and the main reinforcement is welded with the bottom of the test beam.
However, due to the frictional resistance between the ineffective pile length and the soil body, the whole detection result is influenced by the frictional resistance, the measured uplift resistance is larger, and the uplift resistance detection of the uplift pile is inaccurate. The conventional method for solving the problems in the market at present is to add friction-eliminating devices such as double pile casings or geotextile isolation soil layers at the long section of an ineffective pile. Although the conventional method can solve the problem of friction resistance, the problem that a large amount of building materials are consumed when non-effective piles are poured still exists, the construction cost is huge, and the construction is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at reaching following effect through the device that adopts the innovation: firstly, the perfect detection state that the length of the non-effective pile on the upper part is the hollow pile is kept during construction, the detection result is avoided being larger, and secondly, the pull-out resistance detection that the length of the effective pile is carried out by adopting a recyclable force transmission component is adopted. Therefore take this utility model not only can effectively solve the long burden frictional resistance influence testing result problem of non-effective stake, secondly compare in the current solution construction of market convenient, can be very big practice thrift engineering cost and effectively practiced thrift the hole district pile body material.
In order to solve the technical problem, the utility model discloses take following technical scheme:
the utility model provides an uplift pile uplift force detection test connecting component, including uplift pile, steel sheet, biography power component, experimental roof beam, wherein, the uplift pile is pour in the stake hole, has arranged in the uplift pile to expose many main muscle of uplift pile upper end, the one end welding that main muscle exposes the uplift pile has the hook component, the both ends of biography power component can be dismantled with the bottom surface of experimental roof beam and the top surface of steel sheet respectively and be connected, experimental roof beam is shelved on supporting the mound and is separated with the ground interval outside the stake hole, is equipped with the jack that the uplift pile was applyed to the uplift pile between experimental roof beam and the ground, the uplift pile hangs on the steel sheet through the hook component.
Preferably, the periphery of the main reinforcement exposed out of the upper end of the uplift pile is sleeved with a pile casing, the inner diameter of the pile casing is larger than the outer diameter of the uplift pile, and the length of the pile casing is not smaller than the height between the upper end of the uplift pile and the ground.
Preferably, the steel plate is connected with a rope, and the other end of the rope is placed on the ground at the periphery of the pile hole.
Preferably, one side of the steel plate, which is opposite to the test beam, is provided with a first lifting lug and a second lifting lug respectively, and two ends of the force transmission component are provided with hooks matched with the first lifting lug and the second lifting lug.
Preferably, a plurality of circles of restraint stirrups are welded on the periphery of one end, close to the uplift pile, of the main reinforcements exposing the upper end of the uplift pile.
The utility model discloses an uplift pile resistance to plucking force test connecting elements uses the back, can unload behind the uninstallation jack, and the hooking of power component and lug one is transferred in the dump, and adjustment power component and rope make the steel sheet face parallel with the stake central line in the stake hole, drag the rope and propose the stake hole with the steel sheet along stake body owner muscle clearance and retrieve, are convenient for use next time.
The utility model has the advantages that: according to the technical scheme, the utility model provides an uplift pile uplift force detection test connecting component, which keeps the perfect detection state that the upper non-effective pile length is a hollow pile during construction, and effectively solves the problem that the negative friction resistance of the non-effective pile length influences the detection result; adopt recoverable power transmission component to carry out the long anti-pulling force of effective stake simultaneously and detect, compare in the current solution construction convenience of market, saving engineering cost that can be very big and effectively practiced thrift the void region pile body filler material.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
FIG. 1 is a front elevation view of a conventional method of the pullout resistance test;
FIG. 2 is a schematic view of the anti-pulling test vertical surface of the method and apparatus of the present invention;
fig. 3 is a schematic view of the welding of the reinforcing heads at the tops of the main bars of the test pile;
FIG. 4 is a schematic sectional view taken along line A-A;
fig. 5 is a schematic diagram of the side elevation of the anti-pulling test of the method and apparatus of the present invention.
Wherein 1 is an uplift pile; 2 is a main rib; 3 is a stirrup; 4 is a steel plate; 5 is a hook pulling component; 6, a fastener; 7 is a protective cylinder; 8 is a lifting lug II; 9, lifting a first lug; 10 is a stiffening steel plate; the test device comprises a force transmission component 11, a rope 12, a support pier 13, a cushion block 14, a test main beam 15 and a reinforcement stirrup 16.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Example 1
As shown in fig. 2-5, a uplift pile uplift force detection test connecting component comprises an uplift pile 1, a steel plate 4, a force transfer component and a test beam, wherein the uplift pile 1 is poured in a pile hole, a plurality of main ribs 2 exposing the upper end of the uplift pile 1 are arranged in the uplift pile 1, one ends of the main ribs 2 exposing the uplift pile 1 are welded with a hook pull component 5, two ends of the force transfer component 11 are detachably connected with the bottom surface of the test beam 15 and the top surface of the steel plate 4 respectively, the test beam 15 is placed on a support pier 13 and is separated from the ground outside the pile hole at intervals, a jack for applying uplift force to the uplift pile 1 is arranged between the test beam 15 and the ground, and the uplift pile 1 is hung on the steel plate 4 through the hook pull component 5. The periphery of the main reinforcement 2 exposed out of the upper end of the uplift pile 1 is sleeved with a pile casing 7, the inner diameter of the pile casing 7 is larger than the outer diameter of the uplift pile 1, and the length of the pile casing 1 is not smaller than the height between the upper end of the uplift pile 1 and the ground. The steel plate 4 is connected to a rope 12, and the other end of the rope 12 is placed on the ground around the pile hole. A second lifting lug 8 and a first lifting lug 9 are respectively fixed on one surface of the steel plate 4 opposite to the test beam 15, and hooks matched with the second lifting lug 8 and the first lifting lug 9 are arranged at two ends of the force transmission component 11. And a plurality of circles of restraint stirrups are welded on the periphery of one end, close to the uplift pile 1, of the main reinforcements 2 exposing the upper end of the uplift pile 1.
In this embodiment, the thickness of steel sheet 4 is 3 ~ 6 centimeters as biography power carrier, and the diameter of steel sheet 4 is confirmed after subtracting protective layer and main muscle diameter according to the stake footpath of uplift pile 1, encloses into the cooperation of steel reinforcement cage internal circumference diameter with many main muscle 1, and 3 ~ 6 centimeters thick biography power lug 9 symmetric welding is in the upper surface of steel sheet 4 to strengthen intensity through the steel sheet of putting more energy into, the welding position is according to the diameter symmetric arrangement of steel sheet 4, and the aperture leads to the lower extreme that fastener 6 connects rope 12 is reserved at the edge of steel sheet 4 simultaneously, and ground is drawn forth to rope 12.
The two ends of the force transmission component 11 are high-strength drag hooks, the intermediate material is a high-strength tensile material, the tensile yield strength of the force transmission component is greater than the pulling resistance target load applied by the jack, the lower part of the force transmission component 11 is hooked with the second lifting lug 9, and the upper part of the force transmission component is hooked with the second lifting lug 8 welded below the test girder 15.
The second lifting lug 8 is formed by welding and combining two high-strength steel plates with the thickness of 3 centimeters, 1 hole is drilled in the middle, and the second lifting lug 8 is symmetrically welded at the bottom of the test main beam 15.
When the anti-pulling force testing device is used, the anti-pulling force testing connecting component of the anti-pulling pile in the embodiment 1 is added between the anti-pulling pile and the testing main beam to serve as a connecting device, so that the anti-pulling pile is effectively connected with the testing main beam, the pulling load is uniformly transmitted to the main rib of the anti-pulling pile, and the testing data is accurately acquired.
The method comprises the following steps:
a jack is arranged between the ground and the test main beam, the test main beam 15 is jacked up by the jack, the second lifting lug 8 transmits the drawing force to the first lifting lug 9 through the force transmission component 11, and then the steel plate 4 uniformly transmits the drawing force to the hook-pull component 5 on each main rib 1, so that the drawing effect is achieved until the target load of the drawing resistance force is achieved.
After the jack is unloaded, the hook connection between the force transmission component 11 and the lifting lug II 8 is removed, the force transmission component 11 and the rope 12 are adjusted, the surface of the steel plate 4 is parallel to the central line of the pile in the pile hole, and the rope 12 is pulled to lift the steel plate 4 out of the pile hole along the gap of the pile body main rib 1 for recycling, so that the steel plate can be used for the next time.
And (5) recovering the steel pile casing 7, adjusting the position of the test main beam, and carrying out the next test.
The utility model discloses an uplift pile uplift resistance detection test connecting elements, the conversion transmission efficiency is high, installs instant measurement immediately, and the installation is simple and easy, and it is convenient to dismantle, need not to excavate the soil body and spills the pile head, need not to use consumption nature auxiliary measure such as the two section of thick bamboo or geotechnique's cloth that protect that disappears, and the process is efficient, and the recoverable used repeatedly of high-strength force transfer system, very big reduction engineering cost, effectively practiced thrift the hole district pile body material simultaneously.
The above-mentioned embodiments of the uplift pile detection construction method according to the present invention do not limit the protection scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides an uplift pile uplift force detection test connecting component, includes uplift pile, steel sheet, biography power component, test roof beam, its characterized in that, the uplift pile is pour in the stake hole, is arranged with many main muscle that expose the uplift pile upper end in the uplift pile, the one end welding that main muscle exposes the uplift pile has the hook component, the both ends of biography power component can be dismantled with the bottom surface of test roof beam and the top surface of steel sheet respectively and be connected, the test roof beam is shelved on the buttress and is separated with the ground interval outside the stake hole, is equipped with the jack that the uplift pile applyed pile power between test roof beam and the ground, the uplift pile hangs on the steel sheet through the hook component.
2. The uplift pile uplift resistance detection test connecting component according to claim 1, wherein a pile casing is sleeved on the periphery of the main reinforcement exposed out of the upper end of the uplift pile, the inner diameter of the pile casing is larger than the outer diameter of the uplift pile, and the length of the pile casing is not smaller than the height between the upper end of the uplift pile and the ground.
3. The uplift pile uplift resistance detection test connection member according to claim 1, wherein the steel plate is connected with a rope, and the other end of the rope is placed on the ground at the periphery of the pile hole.
4. The uplift pile uplift resistance detection test connecting component according to claim 1, wherein one side of the steel plate opposite to the test beam is provided with a first lifting lug and a second lifting lug respectively, and two ends of the force transmission component are provided with hooks matched with the first lifting lug and the second lifting lug.
5. The uplift pile uplift resistance detection test connecting component according to claim 1, wherein a plurality of circles of restraint stirrups are welded on the periphery of one end, close to the uplift pile, of a plurality of main reinforcements exposed out of the upper end of the uplift pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022848691.4U CN214530815U (en) | 2020-12-01 | 2020-12-01 | Uplift pile uplift resistance detection test connecting component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022848691.4U CN214530815U (en) | 2020-12-01 | 2020-12-01 | Uplift pile uplift resistance detection test connecting component |
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| Publication Number | Publication Date |
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| CN214530815U true CN214530815U (en) | 2021-10-29 |
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| CN202022848691.4U Active CN214530815U (en) | 2020-12-01 | 2020-12-01 | Uplift pile uplift resistance detection test connecting component |
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| CN (1) | CN214530815U (en) |
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- 2020-12-01 CN CN202022848691.4U patent/CN214530815U/en active Active
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