CN211547696U

CN211547696U - Steel pipe pile

Info

Publication number: CN211547696U
Application number: CN201922286987.9U
Authority: CN
Inventors: 朱丹丹; 白松; 田汉州; 唐刚祥; 侯兆隆
Original assignee: Road and Bridge International Co Ltd; China Communications Road and Bridge North China Engineering Co Ltd
Current assignee: Road and Bridge International Co Ltd; China Communications Road and Bridge North China Engineering Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-09-22
Anticipated expiration: 2029-12-17

Abstract

The utility model relates to a steel-pipe pile technical field, concretely relates to steel-pipe pile aims at solving and makes steel-pipe pile internal pressure increase after the cement mortar solidifies, leads to the connector inflation to destroy easily, causes two steel-pipe piles to break away from the connector, influences the problem of the solid soil effect of steel-pipe pile, and its technical essential lies in including first steel-pipe pile, the second steel-pipe pile that is used for prolonging steel-pipe pile, be equipped with hollow connector between first steel-pipe pile and the second steel-pipe pile, connector external connection has the fixed knot who is used for fixed first steel-pipe pile and second steel-pipe pile to construct, connector internal connection has the bearing structure who is used for supporting, increases compressive capacity. The utility model discloses be convenient for butt joint between the steel-pipe pile to area of contact between the steel-pipe pile has been improved, thereby the resistance to compression bearing capacity of the steadiness and junction that the steel-pipe pile is connected is improved.

Description

Steel pipe pile

Technical Field

The utility model relates to a steel-pipe pile technical field, concretely relates to steel-pipe pile.

Background

The steel pipe pile consists of steel pipe, tongue-and-groove and tongue-and-groove pin, the tongue-and-groove is vertically connected to the left pipe wall of the steel pipe, the cross section of the tongue-and-groove is square frame with one open side, the side of the tongue-and-groove is provided with reinforcing ribs, the tongue-and-groove pin is vertically connected to the right pipe wall of the steel pipe and at the position with partial radius, and the groove section of the tongue-and-groove pin is I-shaped, so that the functions of water enclosing, soil enclosing, sand enclosing and the like can be achieved.

The prior patent with the publication number of CN103334423B discloses a combined steel pipe pile, which comprises at least three small-diameter steel pipe piles and a large steel pipe pile, wherein the small-diameter steel pipe piles are fixedly connected and positioned by connecting pieces, the large steel pipe pile is sleeved in the periphery of the small-diameter steel pipe pile in the middle, the part of the inner cavity of the large steel pipe pile, which is positioned above the ground, is filled with concrete, and the large steel pipe pile and the small-diameter steel pipe pile form a whole. The invention has the following advantages: the bearing capacity is enhanced, the stability is improved, the construction speed is high, and the safety and the economical efficiency are good. According to the scheme, only the small-diameter steel pipe pile is driven into the soil layer, so that the construction is simple and convenient, the construction speed is high, the safety performance is good, the site adaptability is strong, the environmental damage is small, the disturbance to the side slope soil body during the pile driving is small, the pile position arrangement is flexible, and the pile position arrangement is economical. The small-diameter steel pipe piles are beneficial to arching of the upper soil body, so that the local stability of the landslide body is enhanced, the whole landslide body is more stable, the supporting and blocking capacity of the pile type is improved, the supporting and blocking capacity is equivalent to that of double-row or multi-row anti-slide piles, the large-sized steel pipe piles and the connecting pieces are equivalent to connecting beams, and the invention has the advantages of the double-row or multi-row anti-slide piles. The large steel pipe pile and the connecting piece can improve the stability of the pile type on one hand, and can improve the anti-sliding capacity of a cantilever part in the anti-sliding pile on the other hand.

However, when a long steel pipe pile needs to be driven into some pile holes for soil fixation, the length of a traditional steel pipe pile cannot meet the requirement of the long pile holes, two steel pipe piles need to be connected together through a connector and driven into the pile holes, and after the two steel pipe piles are connected by the connector and filled with concrete cement paste, the internal pressure of the steel pipe pile is increased after the cement paste is cured, so that the connector is easily expanded and damaged, the two steel pipe piles are separated from the connector, and the soil fixation effect of the steel pipe piles is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming and making the steel-pipe pile internal pressure increase after the cement mortar solidifies in prior art, leads to the connector inflation to destroy easily, causes two steel-pipe piles to break away from the connector, influences the defect of steel-pipe pile firming effect to a steel-pipe pile is provided.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a steel-pipe pile, includes first steel-pipe pile, is used for prolonging the second steel-pipe pile of steel-pipe pile, be equipped with hollow connector between first steel-pipe pile and the second steel-pipe pile, connector external connection has the fixed knot who is used for fixed first steel-pipe pile and second steel-pipe pile to construct, connector internal connection has the bearing structure who is used for supporting, increases compressive capacity.

Optionally, the fixing structure includes a circle of limiting plate annularly disposed on the outer side of the middle portion of the connector, external threads located on the connector are respectively disposed on two sides of the limiting plate, and meanwhile, the first steel pipe pile and the second steel pipe pile are respectively provided with internal threads corresponding to the first steel pipe pile and the second steel pipe pile.

Optionally, the first steel pipe pile and the second steel pipe pile are close to the end of the connector and are provided with reinforcing blocks abutted against the limiting plates, and stud spherical bolts penetrate through the reinforcing blocks and the limiting plates.

Optionally, the supporting structure includes a plurality of fixed covers evenly arranged at intervals on the top and the bottom of the connector, a supporting block in a T-shaped structure is slidably connected inside the fixed cover, a spring is fixed between the supporting block and the fixed cover, the supporting block runs through the spring, a pulp inlet hole is formed in the side wall of the top end of the fixed cover, and the inner diameter of the pulp inlet hole from the top end to the bottom end is gradually reduced.

Optionally, limiting grooves corresponding to the fixing sleeves are formed in the first steel pipe pile and the second steel pipe pile, the supporting blocks are clamped into the limiting grooves under the action of thrust, and two elastic pieces are symmetrically fixed in the limiting grooves.

Optionally, embedded steel bars penetrate through the first steel pipe pile and the second steel pipe pile.

Optionally, the embedded steel bars comprise a first longitudinal bar and a second longitudinal bar which are respectively located on different parallel planes, a plurality of horizontal bars are arranged between the first longitudinal bar and the second longitudinal bar at uniform intervals, and the horizontal bars are connected in a crossed and fixed mode.

Optionally, a first fixing seat is arranged at the top of the first steel pipe pile, the first fixing seat is symmetrically provided with two grouting holes, a second fixing seat is arranged at the bottom of the second steel pipe pile, and the second fixing seat is provided with a grout outlet.

The utility model discloses technical scheme has following advantage:

1. the utility model discloses a steel-pipe pile, make first steel-pipe pile and second steel-pipe pile fix on the connector better through fixed knot structure, the inflation dynamics of fixed knot structure after the in-process of work is solidified to the inside grout of connector is alleviated, reduce the internal pressure of connector, and use through fixed knot structure and bearing structure's cooperation, bearing structure supports fixedly better to the connector inside, prevent that the connector from receiving stake hole external pressure extrusion and damaging, avoid first steel-pipe pile and second steel-pipe pile to break away from the connector.

2. The utility model discloses a steel-pipe pile through the threaded connection structure of first steel-pipe pile, second steel-pipe pile with the connector, has effectively realized that three's location is fixed, has increased area of contact between the steel-pipe pile to improve the steadiness that the steel-pipe pile is connected and the resistance to compression bearing capacity of junction, simultaneously, the setting of limiting plate is more favorable to fixing the time location.

3. The utility model discloses a steel-pipe pile wears to establish fixed double-end ball bolt after first steel-pipe pile, second steel-pipe pile are tight with the connector spiral shell, can avoid taking place the mutual migration condition of first steel-pipe pile, second steel-pipe pile, connector at follow-up grout in-process.

4. The utility model discloses a steel-pipe pile, in the grout in-process, grout enters into fixed cover inside from advancing the thick liquid hole when the whereabouts, thereby push away fixed cover inside back with the supporting shoe, make the spring shrink produce elasticity, simultaneously when the grout of pouring into in first steel-pipe pile reduces, the grout that falls into supporting shoe arc structure reduces, elasticity through the spring makes the supporting shoe resume the normal position, again pour into a large amount of grout into behind the first steel-pipe pile, continue to promote the supporting shoe butt and fix first steel-pipe pile inside wall, with the aforesaid is with the same principle, the supporting shoe is after filling up second steel-pipe pile, also can promote the supporting shoe butt and fix second steel-pipe pile inside wall, further realize consolidating the inside support of connector, and simultaneously, the setting up of spring makes the grout of pouring into in fixed cover tighter, effectively increase the inside intensity of bearing structure.

5. The utility model discloses a steel-pipe pile, the supporting shoe atress promotes to the spacing inslot, makes the supporting shoe begin to extrude two flexure strips of spacing inslot portion, makes two flexure strips produce elasticity, can enter into the inside back of spacing inslot at the supporting shoe, through the centre gripping of two flexure strips, makes the supporting shoe fix well in the spacing inslot portion to make first steel-pipe pile and second steel-pipe pile can fix more steadily on the connector when, can also slow down the inflation dynamics after the cement solidification.

6. The utility model discloses a steel-pipe pile, increase and first steel-pipe pile and second steel-pipe pile's area of contact after filling the thick liquids, when reaching and communicating with each other or close bearing capacity and anti-seismic performance with cast-in-place component, can avoid pre-buried reinforcing bar to be broken on the basis that reduces reinforcing bar overlap joint length and destroy to effectively strengthen bearing capacity, improve stability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a steel pipe pile according to an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Description of reference numerals:

11. a first steel pipe pile; 12. a second steel pipe pile; 13. a connector; 2. a fixed structure; 21. a limiting plate; 22. a reinforcing block; 23. a stud ball bolt; 3. a support structure; 31. fixing a sleeve; 32. a support block; 33. a spring; 34. a slurry inlet hole; 4. a limiting groove; 41. an elastic sheet; 5. embedding reinforcing steel bars in advance; 51. a first longitudinal rib; 52. a second longitudinal rib; 53. and (7) horizontal ribs.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

a steel pipe pile, as shown in fig. 1, includes a first steel pipe pile 11 and a second steel pipe pile 12 for extending the steel pipe pile, and a hollow joint 13 is installed between the first steel pipe pile 11 and the second steel pipe pile 12, so that cement paste is injected into the first steel pipe pile 11 to extend the steel pipe pile to satisfy a long pile hole. In order to solve the problem that the internal pressure of the steel pipe pile is increased after cement slurry is solidified, which easily causes the expansion and damage of the connector 13 and causes the separation of the two steel pipe piles from the connector 13 and affects the soil-fixing effect of the steel pipe pile, the external part of the connector 13 is connected with a fixing structure 2 for fixing the first steel pipe pile 11 and the second steel pipe pile 12, the internal part of the connector 13 is connected with a supporting structure 3 for supporting and increasing the pressure resistance, therefore, the first steel pipe pile 11 and the second steel pipe pile 12 are better fixed on the connector 13 through the fixing structure 2, the expansion force of the solidified cement slurry in the connector 13 is relieved by the fixing structure 2 in the working process, the internal pressure of the connector 13 is reduced, and the supporting structure 3 better supports and fixes the internal part of the connector 13 through the matching use of the fixing structure 2 and the supporting structure 3, and prevents the connector 13 from being damaged due to, the first steel-pipe pile 11 and the second steel-pipe pile 12 are prevented from being detached from the joint 13.

Specifically, as shown in fig. 1, the fixing structure 2 includes a ring of limiting plates 21 annularly disposed outside the middle portion of the connector 13, the two sides of the limiting plates 21 are respectively provided with external threads located on the connector 13, and the first steel pipe pile 11 and the second steel pipe pile 12 are respectively provided with internal threads corresponding to the external threads. Therefore, through the threaded connection structure of the first steel pipe pile 11, the second steel pipe pile 12 and the connector 13, the positioning fixation of the three is effectively realized, the contact area between the steel pipe piles is increased, the stability of the steel pipe pile connection and the compression resistance bearing capacity of the joint are improved, and meanwhile, the limiting plate 21 is arranged to be more favorable for positioning during fixation.

As shown in fig. 1, the end portions of the first steel-pipe pile 11 and the second steel-pipe pile 12 close to the connector 13 are provided with reinforcing blocks 22 abutted against the limiting plates 21, and stud spherical bolts 23 penetrate between the reinforcing blocks 22 and the limiting plates 21, so that after the first steel-pipe pile 11 and the second steel-pipe pile 12 are screwed with the connector 13, the stud spherical bolts 23 penetrate and are fixed, and the situation that the first steel-pipe pile 11, the second steel-pipe pile 12 and the connector 13 mutually move in the subsequent grouting process can be avoided.

As shown in fig. 1 and 2, the supporting structure 3 includes a plurality of fixed sleeves 31 evenly arranged at intervals on the top and the bottom of the connector 13, a supporting block 32 in a T-shaped structure is slidably connected inside the fixed sleeve 31, a spring 33 is arranged between the supporting block 32 and the fixed sleeve 31, the supporting block 32 runs through the inside of the spring 33, a pulp inlet hole 34 is formed in the side wall of the top end of the fixed sleeve 31, and the inner diameter of the pulp inlet hole 34 from the top end to the bottom end is gradually reduced. Therefore, during the grouting process, the cement slurry enters the fixing sleeve 31 from the slurry inlet 34 when falling down, so that the supporting block 32 is pushed into the fixing sleeve 31, the spring 33 is contracted to generate elastic force, meanwhile, when the cement slurry injected into the first steel pipe pile 11 is reduced, the cement slurry falling into the arc-shaped structure of the supporting block 32 is reduced, the supporting block 32 is restored to the original position by the elastic force of the spring 33, after a large amount of cement slurry is injected into the first steel pipe pile 11 again, the supporting block 32 is continuously pushed to abut and be fixed on the inner side wall of the first steel pipe pile 11, in the same way as above, after the second steel pipe pile 12 is filled with the supporting blocks 32, the supporting blocks 32 are also pushed to abut against and be fixed to the inner side wall of the second steel pipe pile 12, so as to further support and reinforce the inside of the connector 13, simultaneously, the setting of spring 33 makes the grout of pouring into in the fixed cover 31 compacter, effectively increases the inside intensity of bearing structure 3.

As shown in fig. 1 and 2, the first steel pipe pile 11 and the second steel pipe pile 12 are internally provided with a limiting groove 4 corresponding to the fixing sleeve 31, the supporting block 32 is clamped into the limiting groove 4 by thrust, and two elastic pieces 41 are symmetrically fixed inside the limiting groove 4, so that the supporting block 32 is forced to push the limiting groove 4, the supporting block 32 starts to extrude the two elastic pieces 41 inside the limiting groove 4, the two elastic pieces 41 generate elastic force, that is, the supporting block 32 can be well fixed inside the limiting groove 4 by clamping the two elastic pieces 41 after entering the limiting groove 4, and therefore the first steel pipe pile 11 and the second steel pipe pile 12 can be more stably fixed on the connector 13 and simultaneously can slow down expansion force after cement curing.

As shown in fig. 1, embedded steel bars 5 penetrate through the first steel pipe pile 11 and the second steel pipe pile 12, so that the bearing capacity can be effectively enhanced by additionally arranging the embedded steel bars 5 during grouting, and the stability is improved. Specifically, embedded steel bar 5 includes that the first muscle 51 of indulging and the muscle 52 is indulged to the second that is located different parallel planes separately, the first muscle 51 of indulging is provided with the even spaced level muscle 53 of a plurality of between the muscle 52 with the second of indulging, the first muscle 51 of indulging is indulged with the second through this level muscle 53 and is indulged the cross fixed connection of muscle 52, thereby increase after the grout is poured and first steel-pipe pile 11 and second steel-pipe pile 12 area of contact, reach and cast-in-place component communicates with each other or near bearing capacity and shock resistance, can avoid embedded steel bar 5 to be pulled apart and destroy on the basis that reduces reinforcing bar overlap joint length.

The working principle of the steel pipe pile is as follows: firstly screwing a first steel pipe pile 11 and a second steel pipe pile 12 with a connector 13, then penetrating and fixing a double-headed spherical bolt 23, then penetrating and embedding a steel bar 5 and pouring cement paste, wherein the cement paste enters the inside of a fixing sleeve 31 from a paste inlet hole 34 when falling, so that a supporting block 32 is pushed into the inside of the fixing sleeve 31, a spring 33 is contracted to generate elastic force, meanwhile, when the cement paste injected into the first steel pipe pile 11 is reduced, the cement paste falling into an arc-shaped structure of the supporting block 32 is reduced, the supporting block 32 is restored to the original position through the elastic force of the spring 33, after a large amount of cement paste is injected into the first steel pipe pile 11 again, the supporting block 32 is continuously pushed into a limiting groove 4 of the first steel pipe pile 11, so that the supporting block 32 starts to extrude two elastic pieces 41 in the limiting groove 4, the two elastic pieces 41 generate elastic force, namely after the supporting block 32 enters the limiting, through the centre gripping of two flexure strips 41, make supporting shoe 32 fix well inside spacing groove 4, with the aforesaid, the same reason, supporting shoe 32 also can promote the supporting shoe 32 butt and fix to the spacing groove 4 of second steel-pipe pile 12 after filling second steel-pipe pile 12, further realizes consolidating the inside support of connector 13.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a steel-pipe pile, its characterized in that, including first steel-pipe pile (11), second steel-pipe pile (12) that are used for prolonging the steel-pipe pile, be equipped with hollow connector (13) between first steel-pipe pile (11) and second steel-pipe pile (12), connector (13) external connection has fixed knot structure (2) that are used for fixed first steel-pipe pile (11) and second steel-pipe pile (12), connector (13) internal connection has supporting structure (3) that are used for supporting, increase compressive capacity.

2. The steel pipe pile according to claim 1, wherein the fixing structure (2) comprises a ring of limiting plates (21) annularly arranged on the outer side of the middle of the connector (13), external threads on the connector (13) are arranged on two sides of each limiting plate (21), and internal threads corresponding to the first steel pipe pile (11) and the second steel pipe pile (12) are arranged on the first steel pipe pile (11) and the second steel pipe pile (12) respectively.

3. The steel pipe pile according to claim 2, wherein reinforcing blocks (22) abutting against limiting plates (21) are arranged at the end parts, close to the connecting head (13), of the first steel pipe pile (11) and the second steel pipe pile (12), and stud spherical bolts (23) penetrate between the reinforcing blocks (22) and the limiting plates (21).

4. The steel pipe pile according to claim 1, wherein the supporting structure (3) comprises a plurality of fixing sleeves (31) which are uniformly arranged at intervals on the top and the bottom of the connector (13), a supporting block (32) which is of a T-shaped structure is slidably connected inside the fixing sleeves (31), a spring (33) is fixed between the supporting block (32) and the fixing sleeves (31), the supporting block (32) penetrates through the inside of the spring (33), a slurry inlet hole (34) is formed in the side wall of the top end of the fixing sleeves (31), and the inner diameter of the slurry inlet hole (34) is gradually reduced from the top end to the bottom end.

5. The steel pipe pile according to claim 4, wherein a limiting groove (4) corresponding to the fixing sleeve (31) is formed in the first steel pipe pile (11) and the second steel pipe pile (12), the supporting block (32) is clamped in the limiting groove (4) under thrust, and two elastic pieces (41) are symmetrically fixed in the limiting groove (4).

6. The steel pipe pile according to claim 1, wherein embedded steel bars (5) are arranged inside the first steel pipe pile (11) and the second steel pipe pile (12) in a penetrating manner.

7. The steel pipe pile according to claim 6, wherein the embedded steel bars (5) comprise a first longitudinal bar (51) and a second longitudinal bar (52) which are respectively located on different parallel planes, and a plurality of horizontal bars (53) which are evenly spaced are arranged between the first longitudinal bar (51) and the second longitudinal bar (52) and are fixedly connected in a crossed manner through the horizontal bars (53).