CN205907728U - Embedded rock pile model test device - Google Patents
Embedded rock pile model test device Download PDFInfo
- Publication number
- CN205907728U CN205907728U CN201620896808.7U CN201620896808U CN205907728U CN 205907728 U CN205907728 U CN 205907728U CN 201620896808 U CN201620896808 U CN 201620896808U CN 205907728 U CN205907728 U CN 205907728U
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- China
- Prior art keywords
- rock
- pile
- reaction frame
- socketed pile
- socketed
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- Expired - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 54
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides an embedded rock pile model test device, including bottom plate, dynamometry display system, displacement testing device, loading system, concrete pier platform, rock block, embedded rock pile, spring, adjusting screw, wherein, loading system includes reaction frame, adjusting screw and jack, and dynamometry display system includes pressure sensor and dynamometry display instrument, and the displacement testing device includes displacement testing 1 and magnetism gauge stand, keep the in one plane at the bottom of the embedded rock pile stake bottom rock block, the concrete pier platform is used for adjusting experiment space to provide the space for subsiding of embedded rock pile, the spring is used for cushioning subsiding of embedded rock pile. Utilize the utility model discloses, the embedded rock pile only provides the bearing capacity by inlaying rock section stake side friction resistance under vertical load -bearing, reach distribution law, the pile bolck load and pile bolck displacement relation and pile body axle power transfer rule of embedded rock pile along pile body side friction resistance.
Description
Technical Field
The utility model relates to a ground mechanical test and pile foundation technical field, more specifically relate to a model test device for testing rock-socketed pile stake side frictional resistance.
Background
At present, in a rock-socketed pile model test, an indoor similar model is mostly adopted to simulate the working properties of the rock-socketed pile, gypsum, cement, sand, water and the like are mainly adopted to simulate a rock mass according to a certain proportion, and the rock mass is different from the actual working properties of the rock-socketed pile to a certain extent, so that the research result is influenced. Therefore, the original rock-socketed pile test carried out indoors can reach the actual working properties of the rock-socketed pile to the maximum extent.
Under the action of vertical load, the bearing capacity of the rock-socketed pile consists of three parts, namely pile side frictional resistance in an overlying soil layer, pile side frictional resistance of a rock-socketed section and pile end resistance. In recent years, the study of the pile side frictional resistance in the rock-socketed section of a rock-socketed pile has been a major academic problem. Because the indoor model test has the characteristics of short test period, low required expenditure, low test difficulty and the like, the method has an irreplaceable effect on the aspect of researching the side frictional resistance of the socketed pile. Therefore, it is important to develop a rock-socketed pile model device for testing the side frictional resistance of the pile.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing an embedded rock pile model test device, embedded rock pile only provides the bearing capacity by embedded rock section stake side frictional resistance under vertical atress, reachs the distribution law, pile bolck load and pile bolck displacement relation and the transmission law of pile body axial force of embedded rock pile along the side frictional resistance of pile body.
The utility model provides an embedded rock pile model test device, include: a bottom plate, a force measuring display system, a displacement testing device, a loading system and a concrete abutment which are arranged on the bottom plate, a rock block arranged on the concrete abutment, a rock embedding pile arranged on the center of the rock block, and a spring arranged below the rock,
the loading system comprises a reaction frame, a jack arranged on the reaction frame and an adjusting screw rod used for adjusting the jack, the force measurement display system comprises a pressure sensor and a force measurement display instrument, and the displacement testing device comprises a digital display dial indicator and a magnetic gauge seat; wherein,
a steel base plate is arranged on the socketed pile, the pressure sensor is arranged between the steel base plate and the jack, the magnetic gauge stand is symmetrically fixed on the reaction frame and the steel base plate, and the digital display dial gauges are symmetrically arranged on the steel base plate; wherein,
the pile bottom of the rock-socketed pile and the bottom of the rock block are on the same plane; the concrete pier is used for adjusting the experimental space and providing a space for the settlement of the rock-socketed pile; the spring is used for buffering the settlement of the socketed pile.
Further, it is preferable that the rock mass further comprises a gap filler material provided in a gap between the socketed pile and the rock mass.
Further, it is preferable that a through-hole is provided in the rock block, and a diameter of the through-hole of the rock block is larger than a diameter of the socketed pile.
Further, it is preferable that the reaction frame includes a reaction frame main body and a reaction frame bottom sprag; the reaction frame main body comprises a cross beam and a stand column perpendicular to the cross beam, and the cross beam and the stand column are fixed with each other through reaction frame adjusting nuts.
Further, it is preferable that the jack is a separate hydraulic jack.
According to the technical scheme above, the utility model provides an embedded rock pile model test device with the help of this embedded rock pile model test device, can pass through vertical loading back, can reach the distribution law, the pile bolck load and the pile bolck displacement relation of side frictional resistance and the transmission law of pile shaft axle power of embedded rock pile along the pile shaft.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic three-dimensional structure diagram of a rock-socketed pile model test device according to an embodiment of the utility model;
fig. 2 is according to the utility model discloses an orthographic view of rock-socketed pile model test device.
Wherein the reference numerals include: 1 is a reaction frame, and 1-1 is a reaction frame adjusting nut; 1-2 is a reaction frame bottom inclined strut; 2 is a jack; 3 is a pressure sensor, and 3-1 is a force measuring display instrument; 4 is a magnetic gauge stand; 5 is a digital display dial indicator; 6 is gap filling material; 7 is a socketed pile; 8 is a steel backing plate; 9 is a rock block; 10 is a concrete abutment; 11 is a spring; 12 is a bottom plate; and 13 is an adjusting screw rod.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to illustrate the utility model provides a structure of socketed pile model test device, figure 1 and figure 2 are right from different angles respectively the utility model discloses a structure of socketed pile model test device has carried out the exemplary sign. In particular, fig. 1 shows a three-dimensional structure of a socketed pile model test device according to an embodiment of the present invention; fig. 2 shows the front view structure of the socketed pile model test device according to the embodiment of the utility model.
As shown in figure 1 and figure 2, the utility model provides an embedded rock pile model test device includes bottom plate 12, dynamometry display system, displacement testing arrangement, establishes loading system and concrete pier 10, setting on the bottom plate 12 are in rock mass 9, setting on the concrete pier 10 are in embedded rock pile 7, the setting on the rock mass 9 central point puts is in spring 11 below rock 9.
Specifically, the loading system comprises a reaction frame 1, an adjusting screw rod 13 and a jack 2 arranged on the reaction frame 1, wherein the jack 2 is a separated hydraulic jack. The force measurement display system comprises a pressure sensor 3 and a force measurement display instrument 3-1, and the displacement testing device comprises a digital display dial indicator 5 and a magnetic gauge stand 4.
It should be noted that the basic principle of the split hydraulic jack is based on the pascal principle, that is, the pressure is uniform throughout the liquid, so that in a balanced system, a smaller piston exerts a smaller pressure, while a larger piston exerts a larger pressure, so that the liquid can be kept still.
Be provided with steel backing plate 8 on the embedded rock pile 7, pressure sensor 3 sets up steel backing plate 8 with between the jack 2, 4 symmetries of magnetism gauge stand are fixed reaction frame 1 with on the steel backing plate 8, 5 symmetries of digital display amesdial set up on the steel backing plate 8, that is to say, 5 reply scales of digital display amesdial are arranged in steel backing plate 8 both sides, take the average value of the two as the value of subsiding during the processing data, reduce the influence of inhomogeneous settlement.
The pile bottom of the rock-socketed pile 7 and the bottom of the rock block 9 are on the same plane; the concrete abutment 10 is used for adjusting an experimental space and providing a space for settlement of the rock-socketed pile 7; the spring 11 is used for buffering the settlement of the socketed pile 7 and preventing people from being injured due to sudden falling. The gap-filling material 6 is arranged in the gap between the socketed pile 7 and the rock mass 9, and the gap-filling material 6 can be high-grade mortar, epoxy resin, nail-free glue or other cementing agents and the like.
The embodiment of the utility model provides an in be provided with the drilling that link up on the rock mass, the drilling diameter of rock mass is greater than the diameter of socketed pile, that is to say, drilling in the rock mass 9 will bore through, guarantees that the bearing capacity of socketed pile only bears by stake side frictional resistance.
In the embodiment of the utility model, the reaction frame 1 comprises a reaction frame main body and a reaction frame bottom inclined strut 1-2 used for supporting the reaction frame main body; the reaction frame main body comprises a cross beam and an upright post perpendicular to the cross beam, and the cross beam and the upright post are fixed with each other through a reaction frame adjusting nut 1-1. In the present invention, the adjusting screw 13 is used to correct the jack 2.
The utility model discloses an in the embodiment, in order to make the socketed pile under vertical load, only lean on socketed section stake side frictional resistance to provide the bearing capacity, the utility model provides a there is not socketed pile model test device of stake end resistance, utilize the rock mass of on-the-spot exploitation, can reach the axial force in each cross-section of pile body through model test, and then obtain the stake side frictional resistance of each stake section of socketed section after calculating through mechanics.
According to the technical scheme above, the utility model provides an embedded rock pile model test device with the help of this embedded rock pile model test device, can pass through vertical loading back, can reach the distribution law, the pile bolck load and the pile bolck displacement relation of side frictional resistance and the transmission law of pile shaft axle power of embedded rock pile along the pile shaft.
The socketed pile model test apparatus according to the present invention has been described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the socketed pile model test device provided by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (5)
1. The utility model provides a rock-socketed pile model test device which characterized in that includes: a bottom plate, a force measuring display system, a displacement testing device, a loading system and a concrete abutment which are arranged on the bottom plate, a rock block arranged on the concrete abutment, a rock embedding pile arranged on the center of the rock block, and a spring arranged below the rock,
the loading system comprises a reaction frame, a jack arranged on the reaction frame and an adjusting screw rod used for adjusting the jack, the force measurement display system comprises a pressure sensor and a force measurement display instrument, and the displacement testing device comprises a digital display dial indicator and a magnetic gauge seat; wherein,
a steel base plate is arranged on the socketed pile, the pressure sensor is arranged between the steel base plate and the jack, the magnetic gauge stand is symmetrically fixed on the reaction frame and the steel base plate, and the digital display dial gauges are symmetrically arranged on the steel base plate; wherein,
the pile bottom of the rock-socketed pile and the bottom of the rock block are on the same plane; the concrete pier is used for adjusting an experimental space and providing a space for the settlement of the rock-socketed pile; the spring is used for buffering the settlement of the socketed pile.
2. A rock-socketed pile model test apparatus as claimed in claim 1,
also included is a filler material disposed between the socketed pile and the rock mass.
3. A rock-socketed pile model test apparatus as claimed in claim 1,
and a through drilling hole is formed in the rock block, and the diameter of the drilling hole of the rock block is larger than that of the rock-socketed pile.
4. A rock-socketed pile model test apparatus as claimed in claim 1,
the reaction frame comprises a reaction frame main body and a reaction frame bottom inclined strut; the reaction frame main body comprises a cross beam and a stand column perpendicular to the cross beam, and the cross beam and the stand column are fixed with each other through reaction frame adjusting nuts.
5. A rock-socketed pile model test apparatus as claimed in claim 1,
the jack is a separated hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896808.7U CN205907728U (en) | 2016-08-18 | 2016-08-18 | Embedded rock pile model test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620896808.7U CN205907728U (en) | 2016-08-18 | 2016-08-18 | Embedded rock pile model test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205907728U true CN205907728U (en) | 2017-01-25 |
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ID=57801190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620896808.7U Expired - Fee Related CN205907728U (en) | 2016-08-18 | 2016-08-18 | Embedded rock pile model test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205907728U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643249A (en) * | 2018-05-21 | 2018-10-12 | 东南大学 | Experimental provision and its assemble method for studying stake-rock interfacial failure mechanism |
| CN109138008A (en) * | 2018-09-30 | 2019-01-04 | 中国科学院武汉岩土力学研究所 | The pilot system of embedded rock pile bearer properties in analog composite rock stratum |
| CN113848121A (en) * | 2021-09-30 | 2021-12-28 | 中煤长江基础建设有限公司 | Test device and method for simulating bearing capacity of rock-socketed pile in rock stratum |
-
2016
- 2016-08-18 CN CN201620896808.7U patent/CN205907728U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643249A (en) * | 2018-05-21 | 2018-10-12 | 东南大学 | Experimental provision and its assemble method for studying stake-rock interfacial failure mechanism |
| CN109138008A (en) * | 2018-09-30 | 2019-01-04 | 中国科学院武汉岩土力学研究所 | The pilot system of embedded rock pile bearer properties in analog composite rock stratum |
| CN113848121A (en) * | 2021-09-30 | 2021-12-28 | 中煤长江基础建设有限公司 | Test device and method for simulating bearing capacity of rock-socketed pile in rock stratum |
| CN113848121B (en) * | 2021-09-30 | 2022-04-01 | 中煤长江基础建设有限公司 | Test device and method for simulating bearing capacity of rock-socketed pile in rock stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20180818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |