CN210737530U - Friction-resistance-eliminating double-protection cylinder for engineering pile test - Google Patents
Friction-resistance-eliminating double-protection cylinder for engineering pile test Download PDFInfo
- Publication number
- CN210737530U CN210737530U CN201921359383.6U CN201921359383U CN210737530U CN 210737530 U CN210737530 U CN 210737530U CN 201921359383 U CN201921359383 U CN 201921359383U CN 210737530 U CN210737530 U CN 210737530U
- Authority
- CN
- China
- Prior art keywords
- hole
- sleeve
- outer sleeve
- wall
- inner sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to an engineering pile test friction resistance eliminating double protection sleeve, which comprises an outer sleeve and an inner sleeve coaxially sleeved in the outer sleeve, wherein an interval space is formed between the outer sleeve and the inner sleeve; the inner wall of the top end of the outer sleeve is convexly provided with a first inserting block, the outer wall of the top end of the inner sleeve is convexly provided with a second inserting block, the first inserting block and the second inserting block are connected through a connecting ring, the outer wall of the connecting ring is provided with a first connecting hole in an inserted connection with the first inserting block, and the inner wall of the connecting ring is provided with a second connecting hole in an inserted connection with the second inserting block; the first connecting hole and the second connecting hole respectively comprise an inserting hole which is axially formed, a sliding hole which is circumferentially formed along the side wall where the inserting hole is located, and a positioning hole which is axially formed in the sliding hole and is far away from one end of the inserting hole, and the positioning hole extends towards the bottom end of the side wall where the positioning hole is located and is sealed. The utility model discloses have the effect that can get rid of the influence that the vertical bearing capacity eigenvalue of the vertical dead load test of single pile produced of the side resistance more than pile bolck elevation position to single pile.
Description
Technical Field
The utility model belongs to the technical field of engineering stake examination friction elimination and hinders technique and specifically relates to an engineering stake examination friction elimination hinders two casings.
Background
The design of the test pile is to select the pile type and the characteristic value of the vertical bearing capacity of the single pile according to geological reports and local experiences. The method aims to further determine the construction feasibility of the selected pile type, and avoid the problem that the pile type is not suitable for construction in the site after the pile driver enters the site comprehensively or the bearing capacity of the pile foundation is far less than a calculated value provided by a geological report, so that the construction period is prolonged and the cost is increased when the pile driver changes the pile type. And secondly, determining the characteristic value of the vertical bearing capacity of the single pile according to the vertical static load test of the single pile. Because the numerical values provided by the geological report are always conservative and the miscellaneous fill above the pile top elevation cannot be timely transported out, it is important to further determine the foundation quality according to the static load report.
In actual construction, due to the influences of site environment, geology, construction process and the like, the elevation difference generally exists between the pile top elevation and the natural ground elevation, so that the actual pile length is larger than the designed pile length, the part of the pile length above the pile top elevation is in contact with the foundation to generate friction resistance, the friction resistance is not contained in the vertical bearing capacity of a single pile, the greater the elevation difference between the pile top elevation and the natural ground elevation is, the greater the contribution of the side resistance above the pile top elevation to the side resistance of the whole tested pile is, and the greater the difficulty in correctly estimating the actual side resistance is. The construction wastes such as brick slag and the like on the upper part of the pile position have high porosity, are easy to collapse and possibly expand, so that the bearing capacity is greatly improved. Therefore, if the influence of the side resistance above the pile top elevation position can be eliminated in the construction process, the method plays an extremely important role in improving the accuracy of the vertical static load test result of the single pile.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an engineering stake test pile disappears rubs and hinders two casings, can get rid of the influence that the side resistance more than the pile bolck elevation position confirms the vertical bearing capacity eigenvalue of single pile to produce to the vertical static load test of single pile.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a friction resistance eliminating double-protection cylinder for an engineering pile test comprises an outer sleeve and an inner sleeve coaxially sleeved in the outer sleeve, wherein the diameter of the outer sleeve is larger than that of the inner sleeve, a spacing space is formed between the outer sleeve and the inner sleeve, and a sealing element is arranged between the bottom of the outer sleeve and the bottom of the inner sleeve; the inner wall of the top end of the outer sleeve is convexly provided with a first inserting block, the outer wall of the top end of the inner sleeve is convexly provided with a second inserting block, the first inserting block and the second inserting block are connected through a connecting ring, the outer wall of the connecting ring is provided with a first connecting hole in an inserted connection with the first inserting block, and the inner wall of the connecting ring is provided with a second connecting hole in an inserted connection with the second inserting block; the first connecting hole and the second connecting hole respectively comprise an inserting hole formed in the axial direction, a sliding hole formed in the circumferential direction of the side wall where the inserting hole is located and a positioning hole formed in the axial direction at one end, far away from the inserting hole, of the sliding hole, and the positioning hole extends towards the top end of the side wall where the positioning hole is located and is sealed to limit the inserting block; the inserting blocks of the outer sleeve and the inner sleeve are respectively inserted into the inserting holes and slide along the sliding holes to be inserted into the positioning holes to fix the connecting ring.
By adopting the technical scheme, the first insertion block and the second insertion block are respectively inserted into the insertion holes, then the connecting ring is rotated to enable the first insertion block and the second insertion block to respectively slide into the positioning holes along the sliding holes, and then the connecting ring is pressed downwards to enable the first insertion block and the second insertion block to be respectively inserted into the positioning holes, so that the connecting ring is fixed between the outer sleeve and the inner sleeve and connects the inner sleeve with the outer sleeve; hoisting the outer sleeve and the inner sleeve which are integrated into a whole to a preset position of a test pile until the bottom of the outer sleeve reaches the elevation position of the top of the preset pile, pulling up the connecting ring upwards and sliding the connecting ring reversely to enable the first inserting block and the second inserting block to slide to the inserting hole, taking out the connecting ring along the inserting hole, and then carrying out a test pile experiment; because there is the space between outer sleeve and the inner sleeve, can get rid of the influence that the vertical dead load test of single pile confirms single pile vertical bearing capacity eigenvalue of side resistance more than the pile crown elevation position produced.
The utility model discloses further set up to: all protruding location plugs that are equipped with in the locating hole, the location jack of pegging graft mutually with location plug is all seted up to first inserted block and second inserted block.
Through adopting above-mentioned technical scheme, the location plug can fix a position the jack, avoids the inserted block to break away from in the locating hole at the hoist and mount in-process of inner sleeve and outer sleeve.
The utility model discloses further set up to: the spring jumping bean is arranged in the positioning hole and located below the positioning plug, and the spring jumping bean abuts against the first insert block or the second insert block after the positioning jack of the first insert block or the second insert block is connected with the positioning plug in an inserted mode.
Through adopting above-mentioned technical scheme, the spring jumps the beans and can carry out the butt to the inserted block to avoid first inserted block or second inserted block to break away from in the locating hole at hoist and mount in-process.
The utility model discloses further set up to: the outer wall of the inner sleeve is convexly provided with an annular ribbed plate, and the protruding height of the annular ribbed plate is smaller than the distance between the outer sleeve and the inner sleeve.
Through adopting above-mentioned technical scheme, annular ribbed plate can support outer sleeve, and the inner skleeve receives the effect of internal force and excessive skew.
The utility model discloses further set up to: the upper surface of the connecting ring is provided with a handle.
Through adopting above-mentioned technical scheme, the handle can conveniently rotate the go-between.
The utility model discloses further set up to: the handle is sleeved with an anti-slip sleeve.
Through adopting above-mentioned technical scheme, the frictional force that the antiskid cover can increase the handle to the convenient go-between that rotates.
The utility model discloses further set up to: the sealing element comprises a sealing ring arranged at the bottom end of the outer sleeve and a water stop arranged between the sealing ring and the inner sleeve in a cushioning mode, and the water stop is tightly attached to the outer wall of the inner sleeve.
Through adopting above-mentioned technical scheme, the waterstop can avoid among the slip casting process thick liquid to get into the interval space between outer sleeve and the inner skleeve, guarantees the validity of outer sleeve and inner skleeve function.
The utility model discloses further set up to: the outer wall of inner skleeve bottom twines has the kelp, kelp winding position is located the top of sealing member.
Through adopting above-mentioned technical scheme, the kelp can expand when meeting water to fill the clearance of seeing between outer sleeve and the inner skleeve, avoid the thick liquid to get into the interval space between outer sleeve and the inner skleeve.
To sum up, the utility model discloses a beneficial technological effect does:
1. the outer sleeve and the inner sleeve which are connected through the connecting rings can be connected and separated conveniently, so that the influence of side resistance above the elevation position of the pile top on the vertical static load test of the single pile on the characteristic value of the vertical bearing capacity of the single pile can be eliminated in the pile testing process;
2. the connecting ring can be conveniently rotated by arranging the handle;
3. by providing a seal, slurry is prevented from entering the space between the outer sleeve and the inner sleeve.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural sectional view of the present invention.
Fig. 3 is an exploded view of the structure of the present invention.
Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.
Fig. 5 is a partially enlarged schematic view of a portion B in fig. 2.
In the figure, 1, an outer sleeve; 11. a first insert block; 111. positioning the jack; 2. an inner sleeve; 21. a second insert block; 22. an annular rib plate; 3. a connecting ring; 31. inserting holes; 32. a sliding hole; 33. positioning holes; 331. positioning the plug; 332. jumping beans by a spring; 34. a handle; 4. a seal ring; 5. a water stop; 6. kelp.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the friction-resistance-eliminating double casing for an engineering pile test disclosed by the present invention comprises an outer sleeve 1 and an inner sleeve 2 coaxially sleeved in the outer sleeve 1, wherein the diameter of the outer sleeve 1 is larger than that of the inner sleeve 2, and an interval space is formed between the outer sleeve 1 and the inner sleeve 2; the top end of the inner sleeve 2 is connected with the top end of the outer sleeve 1 through a connecting ring 3, a plurality of annular rib plates 22 are arranged on the outer wall of the inner sleeve 2, the height of each annular rib plate 22 is smaller than the distance between the inner sleeve 2 and the outer sleeve 1, and a sealing element which is abutted to the outer wall of the inner sleeve 2 is arranged at the bottom of the outer sleeve 1; the top of the outer sleeve 1 and the top of the inner sleeve 2 are connected through the connecting ring 3, so that the outer sleeve 1 and the inner sleeve 2 are integrated, then the outer sleeve 1 and the inner sleeve 2 which are connected into a whole are hoisted to a preset pile testing position until the bottom of the outer sleeve 1 reaches the preset pile top elevation position, then mortar is poured into the inner sleeve 2, and then a single-pile vertical static load test is carried out.
In this embodiment, in order to facilitate the connection and disassembly of the outer sleeve 1 and the inner sleeve 2, referring to fig. 3 and 4, 4 first insertion blocks 11 are symmetrically and convexly arranged on the inner wall of the top end of the outer sleeve 1, 4 second insertion blocks 21 are symmetrically and convexly arranged on the outer side wall of the inner sleeve 2, the central symmetry axes of the first insertion blocks 11 are intersected, and the central symmetry axes of the second insertion blocks 21 are also intersected; the outer wall of the connecting ring 3 is provided with a first connecting hole which is inserted with the first inserting block 11, and the inner wall of the connecting ring 3 is provided with a second connecting hole which is inserted with the second inserting block 21; the first connecting hole and the second connecting hole respectively comprise an inserting hole 31 axially formed along the side wall, a sliding hole 32 circumferentially formed along the side wall where the inserting hole 31 is located, and a positioning hole 33 axially formed in the end, far away from the inserting hole 31, of the sliding hole 32, the inserting hole 31 extends towards the bottom of the connecting ring 3, the top of the inserting hole 31 is sealed to limit the first inserting block 11 or the second inserting block 21, the positioning hole 33 extends towards the top of the connecting ring 3, and the top of the positioning hole 33 is sealed to limit the first inserting block 11 or the second inserting block 21.
The first insertion block 11 or the second insertion block 21 is respectively inserted into the insertion hole 31, the connection ring 3 is rotated to enable the first insertion block 11 and the second insertion block 21 to slide to the positioning hole 33 along the sliding hole 32, and the connection ring 3 is pressed downwards to enable the first insertion block 11 and the second insertion block 21 to be respectively inserted into the positioning holes 33 of the corresponding side walls, so that the connection ring 3 is fixed between the outer sleeve 1 and the inner sleeve 2 and the outer sleeve 1 is connected.
Referring to fig. 4, a handle 34 for facilitating rotation of the connection ring 3 is disposed on the upper surface of the connection ring 3, and an anti-slip sleeve made of rubber is sleeved on the handle 34.
In order to prevent the first insertion block 11 or the second insertion block 21 from being separated from the positioning hole 33 in the using process, referring to fig. 3 and 4, a positioning plug 331 is convexly arranged at the inner top of the positioning hole 33, and the first insertion block 11 and the second insertion block 21 are both provided with positioning insertion holes 111 inserted with the positioning plug 331; the spring jumping beans 332 are arranged at the bottom in the positioning hole 33, and the spring jumping beans 332 are abutted against the first inserting block 11 or the second inserting block 21 in the positioning hole 33, so that the first inserting block 11 or the second inserting block 21 is prevented from being separated from the positioning hole 33 in the hoisting process.
Referring to fig. 2 and 5, the sealing element includes a sealing ring 4 disposed at the bottom end of the outer sleeve 1 and a water stop 5 disposed between the sealing ring 4 and the inner sleeve 2, and the water stop 5 is tightly attached to the outer wall of the inner sleeve 2; the outer wall of the bottom end of the inner sleeve is wound with kelp 6, and the winding position of the kelp 6 is positioned above the sealing element; waterstop 5 can avoid the slip casting in-process thick liquid to get into the interval space between outer sleeve 1 and the inner skleeve 2, and kelp 6 meets water and can expand to fill the clearance space between outer sleeve 1 and the inner skleeve 2, guarantee the validity of outer sleeve 1 and the operation of inner skleeve 2.
The implementation principle of the embodiment is as follows: the first insertion block 11 or the second insertion block 21 is respectively inserted into the insertion hole 31, the connecting ring 3 is rotated to enable the first insertion block 11 and the second insertion block 21 to slide to the positioning hole 33 along the sliding hole 32, the connecting ring 3 is pressed downwards to enable the first insertion block 11 and the second insertion block 21 to be respectively inserted into the positioning holes 33 of the corresponding side walls, the outer sleeve 1 and the inner sleeve 2 are integrated, then the outer sleeve 1 and the inner sleeve 2 which are connected into a whole are hoisted to a preset pile testing position until the bottom of the outer sleeve 1 reaches a preset pile top elevation position, then mortar is poured into the inner sleeve 2, and a single-pile vertical static load test is achieved.
The utility model can conveniently connect and separate the outer sleeve 1 and the inner sleeve 2 by arranging the outer sleeve 1 and the inner sleeve 2 which are connected by the connecting ring 3, thereby eliminating the influence of side resistance above the elevation position of the pile top on the vertical static load test of a single pile to determine the characteristic value of the vertical bearing capacity of the single pile in the pile testing process; the connecting ring 3 can be conveniently rotated by arranging the handle 34; by providing a seal, grout is prevented from entering the space between the outer sleeve 1 and the inner sleeve 2.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an engineering pile test friction-resistance-eliminating double pile casing which characterized in that: the sealing device comprises an outer sleeve (1) and an inner sleeve (2) coaxially sleeved in the outer sleeve (1), wherein the diameter of the outer sleeve (1) is larger than that of the inner sleeve (2), a spacing space is formed between the outer sleeve (1) and the inner sleeve (2), and a sealing element is arranged between the bottom of the outer sleeve (1) and the bottom of the inner sleeve (2); the inner wall of the top end of the outer sleeve (1) is convexly provided with a first inserting block (11), the outer wall of the top end of the inner sleeve (2) is convexly provided with a second inserting block (21), the first inserting block (11) and the second inserting block (21) are connected through a connecting ring (3), the outer wall of the connecting ring (3) is provided with a first connecting hole which is in inserted connection with the first inserting block (11), and the inner wall of the connecting ring (3) is provided with a second connecting hole which is in inserted connection with the second inserting block (21); the first connecting hole and the second connecting hole respectively comprise an inserting hole (31) which is axially formed, a sliding hole (32) which is circumferentially formed along the side wall where the inserting hole (31) is located, and a positioning hole (33) which is axially formed at one end, far away from the inserting hole (31), of the sliding hole (32), and the positioning hole (33) extends towards the top end of the side wall where the positioning hole (33) is located and is sealed to limit the inserting block; the inserting blocks of the outer sleeve (1) and the inner sleeve (2) are respectively inserted into the inserting holes (31) and slide along the sliding holes (32) to be inserted into the positioning holes (33) so that the connecting ring (3) is fixed.
2. The engineering pile test friction-eliminating double pile casing according to claim 1, characterized in that: all protruding location plug (331) that is equipped with in locating hole (33), location jack (111) of pegging graft mutually with location plug (331) are all seted up in first inserted block (11) and second inserted block (21).
3. The engineering pile test friction-eliminating double pile casing according to claim 2, characterized in that: be equipped with spring jump beans (332) in locating hole (33), spring jump beans (332) are located the below of location plug (331), spring jump beans (332) butt first inserted block (11) or second inserted block (21) after location jack (111) of first inserted block (11) or second inserted block (21) are pegged graft mutually with location plug (331).
4. The engineering pile test friction-eliminating double pile casing according to claim 1, characterized in that: annular ribbed slab (22) are convexly arranged on the outer wall of inner sleeve (2), and the protruding height of annular ribbed slab (22) is less than the interval between outer sleeve (1) and inner sleeve (2).
5. The engineering pile test friction-eliminating double pile casing according to claim 1, characterized in that: the upper surface of the connecting ring (3) is provided with a handle (34).
6. The engineering pile test friction-eliminating double pile casing according to claim 5, characterized in that: the handle (34) is sleeved with an anti-slip sleeve.
7. The engineering pile test friction-eliminating double pile casing according to claim 1, characterized in that: the sealing member is including setting up sealing ring (4) and the waterstop (5) of establishing between sealing ring (4) and inner skleeve (2) of setting in outer sleeve (1) bottom, waterstop (5) hug closely in inner skleeve (2) outer wall.
8. The engineering pile test friction-eliminating double pile casing according to claim 7, characterized in that: the outer wall of the bottom end of the inner sleeve (2) is wound with a sea belt (6), and the winding position of the sea belt (6) is located above the sealing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359383.6U CN210737530U (en) | 2019-08-20 | 2019-08-20 | Friction-resistance-eliminating double-protection cylinder for engineering pile test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359383.6U CN210737530U (en) | 2019-08-20 | 2019-08-20 | Friction-resistance-eliminating double-protection cylinder for engineering pile test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210737530U true CN210737530U (en) | 2020-06-12 |
Family
ID=71008476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921359383.6U Active CN210737530U (en) | 2019-08-20 | 2019-08-20 | Friction-resistance-eliminating double-protection cylinder for engineering pile test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210737530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609752A (en) * | 2020-12-03 | 2021-04-06 | 上海市基础工程集团有限公司 | Recyclable double-layer steel sleeve for bored pile static load test and method |
-
2019
- 2019-08-20 CN CN201921359383.6U patent/CN210737530U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609752A (en) * | 2020-12-03 | 2021-04-06 | 上海市基础工程集团有限公司 | Recyclable double-layer steel sleeve for bored pile static load test and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0376340B1 (en) | Apparatus for analysing ground characteristics and method of determining a foundation pile for a bored hole | |
| CN202247833U (en) | Device for measuring and monitoring underground water pressure | |
| US20150233230A1 (en) | Borehole inspecting and testing device and method of using the same | |
| JP2011117172A (en) | Method for checking end bearing capacity of cast-in-place pile | |
| CN105019485B (en) | A kind of excavation of foundation pit dead load test on pile foundation detection method | |
| CN210737530U (en) | Friction-resistance-eliminating double-protection cylinder for engineering pile test | |
| CN104374650A (en) | Testing device and method for testing static force shear property between tubular pile and grouting soil body | |
| KR101918348B1 (en) | Device for measuring suspension in borehole stability fluids and a slime thickness at the bottom of a pile borehole | |
| WO2016178684A1 (en) | Borehole inspecting and testing device and method of using the same | |
| CN101806073A (en) | Resistance-free load test device and method for upper extension section of foundation pile | |
| RU2349711C2 (en) | Bored pile bearing capacity determining method | |
| US3751931A (en) | Piling | |
| US3913337A (en) | Piling | |
| US4132082A (en) | Piling | |
| CN109898569A (en) | The detection construction method of composite cement soil stake | |
| CN101736761A (en) | Indoor model test device by dynamic replacement method | |
| CN105424485B (en) | Concrete filled steel tube bow member perfusion pilot system and test method | |
| CN209368877U (en) | Contrary sequence method steel pipe column and the movable attachment device of steel reinforcement cage | |
| CN105780829A (en) | Device for rapidly and accurately detecting sediment thickness of cast-in-situ bored pile | |
| JP4054900B2 (en) | Calculation method of bearing capacity of joint pile | |
| CN210486733U (en) | Bridge engineering bored pile hole bottom sediment layer thickness survey device | |
| JP2017115533A (en) | Pile construction management method | |
| CN109778922B (en) | Device and method for detecting thickness of pile hole sediment of cast-in-situ bored pile | |
| CN210529780U (en) | Miniature steel-pipe pile and grout interface pressure field test device | |
| CN209941652U (en) | Integral embedding device and embedding structure of pore pressure sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |