CN209873850U - Pile foundation and abutment flexible connection structure - Google Patents
Pile foundation and abutment flexible connection structure Download PDFInfo
- Publication number
- CN209873850U CN209873850U CN201920524102.1U CN201920524102U CN209873850U CN 209873850 U CN209873850 U CN 209873850U CN 201920524102 U CN201920524102 U CN 201920524102U CN 209873850 U CN209873850 U CN 209873850U
- Authority
- CN
- China
- Prior art keywords
- abutment
- pile
- pile foundation
- pile head
- bridge
- 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.)
- Expired - Fee Related
Links
Landscapes
- Foundations (AREA)
Abstract
The utility model relates to a pile foundation and abutment flexonics structure, including bridge pile foundation and abutment, the upper end of bridge pile foundation has the pile head that stretches into the inside of abutment, and the pile head is big-end-up, little variable cross-section structure down, and the upper end of pile head is connected with the abutment through the connecting piece, is provided with the elastic cushion layer between the surface of pile head and the abutment. The utility model discloses through the elastic cushion layer effect between the pile head of well cross section and the abutment, can absorb abutment relative corner and displacement, weaken the abutment to the constraint effect of bridge pile foundation to reduce pile bolck moment of flexure, avoid pile head and bridge pile foundation to appear damaging, improve the durability and the anti-seismic performance of structure, overall structure designs simply, rationally, construction convenience.
Description
The technical field is as follows:
the utility model relates to a pile foundation and abutment flexible connection structure.
Background art:
for an integral seamless bridge, the pile foundation and the abutment are rigidly connected by embedding the pile top into the abutment, and the abutment has a great constraint effect on the pile foundation. When the main beam and the abutment of the bridge generate corners and displacement under the action of vehicle load and earthquake, the abutment drives the pile foundation to move together, most bending moment and shearing force are transmitted to the pile foundation, and the phenomenon of concrete damage can occur at the connecting part of the pile foundation and the abutment under the complex pressing, bending and shearing action. The pile foundation not only needs to bear the vertical load caused by the dead weight of the upper structure, live load and the like, but also needs to bear the horizontal load caused by earthquake, temperature action and the like. In addition, the rigidity of the pile foundation is far smaller than that of the bridge abutment, and when the bridge abutment generates the circulating-damage horizontal displacement under the temperature action, the pile foundation and the bridge abutment move synchronously, so that the pile generates larger stress at the concrete at the joint of the bridge abutment, the concrete is very easy to crack, and the horizontal bearing capacity of the pile is reduced.
Aiming at the phenomena of concrete damage and pile foundation damage of the pile foundation and the abutment which are rigidly connected in the integral seamless bridge, and how to adopt an effective connection mode, the problem to be solved urgently is solved.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a pile foundation and abutment flexible connection structure is provided, not only rational in infrastructure, novel, construction convenience moreover.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a pile foundation and abutment flexonics structure, includes bridge pile foundation and the abutment that is located bridge pile foundation top, the upper end of bridge pile foundation has the pile head that stretches into the inside of abutment, the pile head is big-end-up, little variable cross-section structure down, and the upper end of pile head is connected with the abutment through the connecting piece, is provided with the elastic cushion layer between the surface of pile head and the abutment.
Furthermore, the lower end of the abutment is provided with a concave part which is matched with the shape of the pile head and used for accommodating the pile head, and an elastic cushion layer is arranged between the inner surface of the concave part and the outer surface of the pile head.
Further, the top surface and the bottom surface of the pile head are parallel.
Further, the side of the pile head is at an angle of 30 ° ~ 45 ° to the vertical axis of the pile head.
Furthermore, the bottom surface of the pile head is flush with the bottom surface of the bridge abutment, and the height of the pile head is 1 ~ 2 times of the pile diameter of the bridge pile foundation.
Furthermore, the connecting piece includes that at least one circle is the connecting reinforcement of annular distribution at pile head top surface, connecting reinforcement pours as an organic wholely with the abutment.
Furthermore, the upper end and the lower end of the connecting reinforcing steel bar are respectively provided with a connecting hook.
Furthermore, the elastic cushion layer is made of flexible materials, and the thickness of the elastic cushion layer is 1/8-1/5 of the pile diameter of the bridge pile foundation.
Further, the cross section of the bridge pile foundation is circular or rectangular; the pile head is in a circular truncated cone shape or a prismatic table shape.
Compared with the prior art, the utility model discloses following effect has: the utility model discloses through the elastic cushion layer effect between the pile head of well cross section and the abutment, can absorb abutment relative corner and displacement, weaken the abutment to the constraint effect of bridge pile foundation to reduce pile bolck moment of flexure, avoid pile head and bridge pile foundation to appear damaging, improve the durability and the anti-seismic performance of structure, overall structure designs simply, rationally, construction convenience.
Description of the drawings:
FIG. 1 is a schematic diagram of the construction of an embodiment of the present invention;
fig. 2 is a schematic sectional view taken along line a-a in fig. 1.
In the figure:
1-bridge pile foundation; 2-pile head; 3-abutment; 4-connecting reinforcing steel bars; 5-an elastic cushion layer; 6-a recess; 7-connecting the hook.
The specific implementation mode is as follows:
in order to explain the present invention more clearly, the following description of the present invention is made with reference to the accompanying drawings and examples, and it is to be understood that the drawings listed below are merely some specific examples of the present invention.
As shown in fig. 1-2, the utility model relates to a pile foundation and abutment flexible connection structure, include bridge pile foundation 1 and the abutment 3 that is located bridge pile foundation 1 top, bridge pile foundation 1's upper end has the pile head 2 that stretches into 3 inside abutments, pile head 2 is big-end-up, little variable cross section structure down, and the top surface and the bottom surface of pile head 2 parallel, and the upper end of pile head 2 is connected with abutment 3 through the connecting piece, is provided with elastic cushion 5 between pile head 2's surface and the abutment 3. Through the effect of elastic cushion 5 between variable cross section's pile head 2 and the abutment 3, can absorb 3 relative corners of abutment and displacement, weaken abutment 3 to bridge pile foundation 1's constraint effect to reduce pile bolck moment of flexure, avoid pile head 2 and bridge pile foundation 1 to appear damaging, improve the durability and the anti-seismic performance of structure.
In this embodiment, a recess 6 adapted to the shape of the pile head 2 and configured to accommodate the pile head 2 is disposed at the lower end of the abutment 3, and an elastic cushion 5 is disposed between the inner surface of the recess 6 and the outer surface of the pile head 2. Abutment 3 is the concrete abutment, and the size of recess 6 suits with elastic cushion 5 in 3 abutments for 3 insides of abutment can closely laminate with pile head 2.
In this embodiment, the included angle between the side of the pile head 2 and the vertical axis of the pile head 2 is 30 degrees ~ 45 degrees, the pile head 2 with a variable cross-section shape is beneficial to dispersing the load transferred by the abutment 3, preventing the concrete of the pile head 2 from being damaged due to stress concentration, and improving the connection performance of the abutment 3 and the bridge pile foundation 1.
In this embodiment, the bottom surface of pile head 2 is flush with the bottom surface of abutment 3, and the height of pile head 2 is 1 ~ 2 times of the diameter of bridge pile foundation 1, guarantees the structural advantage of pile head 2, is favorable to allowing abutment 3 to take place corner and displacement deformation.
In this embodiment, the connecting piece includes that at least one circle is the connecting reinforcement 4 of annular distribution at pile head 2 top surface, connecting reinforcement 4 pours as an organic whole with abutment 3. Connecting reinforcement 4 not only can improve abutment 3 and bridge pile foundation 1's joint strength, can also act as flexonics spare and make abutment 3 guarantee that abutment 3 and bridge pile foundation 1 structure are difficult for appearing the fracture when taking place corner and displacement, has improved the security of bridge.
In this embodiment, the upper and lower ends of the connecting reinforcing steel bar 4 are respectively provided with a connecting hook 7. The connecting hooks 7 at the upper end are poured integrally with the abutment 3, and the connecting hooks 7 at the lower end are embedded in the pile head 2 and are poured integrally with the pile head 2. The upper end and the lower end of the connecting reinforcing steel bar 4 are respectively provided with a connecting hook 7, so that the connecting strength can be improved.
In this embodiment, the shape of the elastic cushion layer 5 is adapted to the pile head 2, and is also a variable cross-section structure with a large upper part and a small lower part, the elastic cushion layer 5 is made of a flexible material, and the thickness of the elastic cushion layer 5 is 1/8-1/5 of the pile diameter of the bridge pile foundation 1. Preferably, elastic cushion 5 adopts natural rubber, can effectual absorption abutment 3's displacement and corner, and elastic cushion 5 closely laminates with pile head 2, prevents inside the rainwater infiltration reaches pile head 2 concrete, improves the durability of concrete. The elastic cushion layer 5 is adhered to the outer surface of the pile head 2.
In this embodiment, the cross-section of bridge pile foundation 1 is circular or rectangle, in the actual production course of working, can set up the cross-sectional shape of bridge pile foundation 1 as required. The pile head 2 is in a circular truncated cone shape or a prismatic table shape. When the cross section of the bridge pile foundation 1 is circular, the pile head 2 is in a circular truncated cone shape; when the section of the pile foundation 1 is rectangular, the pile head 2 is in a frustum pyramid shape.
In this embodiment, the concrete strength grade and the arrangement of reinforcement rate of bridge pile foundation 1 and abutment 2 satisfy the design requirement can, connecting reinforcement 4 is ordinary reinforcing bar, satisfy the atress and the deformation requirement can.
In this embodiment, the construction process includes the following steps: (1) constructing and maintaining a bridge pile foundation and a pile head; (2) at least one circle of connecting steel bars distributed annularly are pre-embedded on the top surface of the pile head; (3) laying an elastic cushion layer on the outer surface of the pile head; (4) and constructing and maintaining the abutment, so that the abutment and the connecting steel bars are poured into a whole.
The utility model has the advantages that:
(1) the pile foundation belongs to concealed engineering, once the concrete cracks or crushes, the bearing capacity and durability of the structure are greatly weakened, and the maintenance is difficult; the structure of the utility model can allow the corner and displacement between the bridge abutment and the bridge pile foundation, weaken the constraint action of the bridge abutment on the bridge pile foundation, reduce the bending moment action borne by the bridge pile foundation, effectively avoid the damage of the bridge pile foundation and improve the safety of the structure;
(2) the elastic cushion layer can prevent rainwater from permeating into the connecting part of the pile head and the abutment, improve the safety and the durability of the reinforced concrete structure, absorb the corner and the horizontal displacement caused by the abutment, improve the stress state of the lower pile foundation, increase the ductility of the structure and be applied to areas with frequent earthquakes;
(3) the variable cross-section pile head of the utility model can disperse the vertical load on the top of the bridge pile foundation, reduce stress concentration, make the pile body stress more uniform and prevent the local damage of the pile top concrete;
(4) the utility model has the advantages of simple structure and reasonable stress to need not complicated construction technology and can reach the utility model discloses the structure good performance, important engineering using value has.
The utility model discloses from the design, the construction, the maintenance stage is started, fundamentally solves the problem that bridge pile foundation and abutment junction concrete destroyed, adopt this method measure back promptly, will effectively reduce diseases such as pile head and abutment junction concrete destruction, reduce the moment of flexure effect that the bridge pile foundation receives, and then reduce the bridge pile foundation and take place to damage, improve the security and the anti-seismic performance of bridge simultaneously, can extensively apply to the actual bridge field, solve bridge pile head concrete destruction, diseases such as pile foundation damage, higher economic benefits and practical value have.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (9)
1. The utility model provides a pile foundation and abutment flexonics structure, includes bridge pile foundation and the abutment that is located bridge pile foundation top, its characterized in that: the upper end of bridge pile foundation has the pile head that stretches into the inside abutment, the pile head is big-end-up, little variable cross-section structure down, and the upper end of pile head is connected with the abutment through the connecting piece, is provided with the elastic cushion layer between the surface of pile head and the abutment.
2. The flexible connection structure of pile foundation and abutment according to claim 1, wherein: the lower end of the abutment is provided with a concave part which is adapted to the shape of the pile head and is used for accommodating the pile head, and an elastic cushion layer is arranged between the inner surface of the concave part and the outer surface of the pile head.
3. A pile foundation and abutment flexible connection structure according to claim 1 or 2, wherein: the top surface and the bottom surface of the pile head are parallel.
4. A flexible connection between a pile foundation and an abutment as claimed in claim 1, wherein the side of the pile head is angled at 30 ° ~ 45 ° to the vertical axis of the pile head.
5. The flexible connection structure of pile foundation and bridge abutment as claimed in claim 1, wherein the bottom surface of the pile head is flush with the bottom surface of the bridge abutment, and the height of the pile head is 1 ~ 2 times of the diameter of the pile of the bridge pile foundation.
6. The flexible connection structure of pile foundation and abutment according to claim 1, wherein: the connecting piece includes that at least one circle is the connecting reinforcement of annular distribution at pile head top surface, connecting reinforcement pours as an organic wholely with the abutment.
7. The flexible connection structure of pile foundation and abutment according to claim 6, wherein: and the upper end and the lower end of the connecting steel bar are respectively provided with a connecting hook.
8. A pile foundation and abutment flexible connection structure according to claim 1 or 2, wherein: the elastic cushion layer is made of flexible materials, and the thickness of the elastic cushion layer is 1/8-1/5 of the pile diameter of the bridge pile foundation.
9. The flexible connection structure of pile foundation and abutment according to claim 1, wherein: the cross section of the bridge pile foundation is circular or rectangular; the pile head is in a circular truncated cone shape or a prismatic table shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920524102.1U CN209873850U (en) | 2019-04-18 | 2019-04-18 | Pile foundation and abutment flexible connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920524102.1U CN209873850U (en) | 2019-04-18 | 2019-04-18 | Pile foundation and abutment flexible connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209873850U true CN209873850U (en) | 2019-12-31 |
Family
ID=68960575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920524102.1U Expired - Fee Related CN209873850U (en) | 2019-04-18 | 2019-04-18 | Pile foundation and abutment flexible connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209873850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021231A (en) * | 2020-01-16 | 2020-04-17 | 福州大学 | Structure for flexibly connecting H-shaped steel-PHC combined pile with bridge abutment and construction method thereof |
-
2019
- 2019-04-18 CN CN201920524102.1U patent/CN209873850U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021231A (en) * | 2020-01-16 | 2020-04-17 | 福州大学 | Structure for flexibly connecting H-shaped steel-PHC combined pile with bridge abutment and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201679114U (en) | Horizontal seam dissipating energy prestress shear wall structure | |
| CN202390752U (en) | Fiber-steel composite pipe reinforced concrete pier | |
| CN105113389A (en) | Assembled type bridge pier column member with steel-concrete composite structure | |
| CN203270457U (en) | Suspension bar anchoring structure capable of initiatively reinforcing concrete tied-arch bridge | |
| CN102383420B (en) | High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar | |
| CN104674649B (en) | Earthquake damage control system for thin-wall hollow pier | |
| CN207130606U (en) | Flexing suppress round end type concrete pier of steel tube and with cushion cap attachment structure | |
| CN102061742B (en) | Shockproof reinforced concrete pseudo-classic building structural system | |
| CN104499608B (en) | The design and construction method of prestressing force section steel reinforcement shear wall | |
| CN215367220U (en) | Corrosion-resistant steel composite prestressed concrete pipe pile | |
| CN108677690A (en) | Energy dissipating Self-resetting bilayer rectangle hollow concrete filled steel tube waves Bridge Pier Structure System | |
| CN109057148A (en) | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam and its construction method | |
| CN116805123A (en) | Design method, checking method and lattice tower independent foundation | |
| CN209873850U (en) | Pile foundation and abutment flexible connection structure | |
| CN109914463A (en) | A kind of pile foundation and abutment flexible connecting structure and its construction method | |
| CN109826222B (en) | Structure for reinforcing pile table connection and construction method thereof | |
| CN205501843U (en) | Consolidate rigid framed arch bridge | |
| CN215482258U (en) | Multi-damping system for segment-assembled single-column pier separated UHPC swinging bearing platform | |
| CN206273876U (en) | A kind of Anti-seismic combined type bridge pier | |
| CN206053037U (en) | Prestressing force Self-resetting damage concentration is prefabricated waves shear wall for a kind of segmentation | |
| CN211142788U (en) | Semi-assembled combined pier | |
| CN209873845U (en) | Structure for reinforcing pile platform connection | |
| CN204509979U (en) | A kind of Novel thin wall hollow bridge pier seismic Damage hierarchy of control | |
| CN205677089U (en) | There is coupled column and the base node structure of horizontal anti-seismic performance | |
| WO2009076858A1 (en) | Pile with hoop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 |