CN213951917U - Prefabricated pier shell type anti-seismic connecting structure - Google Patents
Prefabricated pier shell type anti-seismic connecting structure Download PDFInfo
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- CN213951917U CN213951917U CN202022295515.2U CN202022295515U CN213951917U CN 213951917 U CN213951917 U CN 213951917U CN 202022295515 U CN202022295515 U CN 202022295515U CN 213951917 U CN213951917 U CN 213951917U
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Abstract
The utility model discloses a shell type anti-seismic connecting structure of a prefabricated pier, wherein the lower part of the prefabricated pier is made into a shear groove, the surface is roughened before installation, the top surface of a pile foundation is provided with a positioning cushion block, a cushion layer is arranged between the pile foundation and the prefabricated pier, a main rib of the prefabricated pier is cut off at the end part, and the main rib of the pile foundation is extended outwards; the pre-buried cushion cap of joint owner muscle, the horizontal reinforcing bar be spiral stirrup or ring muscle, set up in pile foundation owner muscle outer lane, the post-cast joint pour at prefabricated pier and pile foundation junction. Therefore, shell type connection between the prefabricated bridge pier and the lower part structure is realized, on-site steel bar connection is not needed, construction is convenient and rapid, and efficiency is high; the field grouting connection is not needed, the construction quality is controllable, and the construction quality is high; through overhanging pile foundation owner muscle and setting up horizontal reinforcing bar, the ductility is good, can be used to prefabricated assembled bridge underbody structural connection in high earthquake district, and application scope is wide.
Description
Technical Field
The utility model relates to a prefabricated pier shell type antidetonation connection structure belongs to assembled bridge engineering field.
Background
In recent years, with the rapid development of industrialized construction of traffic engineering in China, prefabricated assembled structures are more and more widely applied. The prefabricated structure is efficient, high-quality, environment-friendly, economical and safe, and is one of the main development trends of bridge engineering in the world. The conventional methods for connecting the lower structures of prefabricated bridges mainly comprise grouting sleeve connection, grouting metal corrugated pipe connection, mortise and tenon joint connection, socket joint connection and the like. The grouting sleeve connection and the grouting metal corrugated pipe connection are convenient and quick to construct, but the field grouting quality is not easy to control, and the grouting defect is easy to generate; the mortise-tenon type connection can effectively limit shearing dislocation between structures, but is inconvenient to construct and high in installation precision requirement; the socket type connection has simple structure, but the performance of the connection area is not clear, and the socket type connection is suitable for general engineering. Therefore, the development of a high-quality, high-efficiency and universal prefabricated bridge substructure connecting structure is necessary.
SUMMERY OF THE UTILITY MODEL
Technical defect and the needs of the industrialized high quality development of bridge engineering to the current prefabricated assembled bridge substructure connection common method, the utility model provides a high-quality, high-efficient, general prefabricated pier shell type antidetonation connection structure. The prefabricated bridge lower structure has the characteristics of simple structure, convenience and quickness in construction, high quality, high efficiency, good ductility and the like, and can ensure the sufficient ductility and the anti-seismic stress performance of the joint structure, so that the overall quality of the prefabricated bridge lower structure is higher, and the application range is wider.
The utility model adopts the technical proposal that:
a shell type anti-seismic connecting structure of a prefabricated pier comprises a prefabricated pier, a pile foundation, a positioning stop block, a prefabricated pier main rib, a pile foundation main rib, transverse reinforcing steel bars and a post-cast joint;
pile foundation top surface set up the location dog, prefabricated pier erects on pile foundation, and is located between the position baffle, prefabricated pier in be equipped with prefabricated pier owner muscle, prefabricated pier owner muscle end at prefabricated pier tip, the pile foundation embeds pile foundation owner muscle, pile foundation main muscle outwards extend pile foundation top surface, horizontal setting in pile foundation owner muscle outer lane, the post-cast joint pour at prefabricated pier and pile foundation junction, the post-cast joint wrap up pile foundation owner muscle and prefabricated pier wherein.
The utility model discloses a further technique:
preferably, the prefabricated bridge pier can be designed to be a circular section or a rectangular section, the lower connecting area is made into a shear groove, and surface roughening treatment is carried out before installation, so that the full combination of the prefabricated bridge pier and post-cast connecting joint concrete is improved.
Preferably, a cushion layer is arranged between the pile foundation and the prefabricated bridge pier and is a mortar cushion layer.
Preferably, the pile foundation main rib extends outwards, and the pile foundation main rib extends outwards to be subjected to rust prevention treatment.
Preferably, the diameter of the pile foundation main rib is not less than 22mm, and the pile foundation main rib is subjected to rust prevention treatment.
Preferably, the transverse steel bar is a spiral stirrup or a ring bar, and is locally encrypted in an area 30cm below the top of the post-cast joint, so that the integrity of the joint is improved.
Preferably, the side wall of the bottom of the prefabricated pier is a step surface, and the inner wall of the post-cast joint matched with the side wall is also a step surface.
Preferably, the post-cast joint is poured at the joint of the prefabricated bridge pier and the pile foundation, concrete higher than the prefabricated bridge pier by one grade is preferably selected, and the wall thickness is preferably more than or equal to 30 cm.
The utility model has the advantages that:
firstly, the shell type anti-seismic connecting structure of the prefabricated pier has simple structure, does not need on-site steel bar connection, and is convenient, rapid and efficient to construct; secondly, the prefabricated pier shell type anti-seismic connecting structure does not need on-site grouting connection, and has controllable construction quality and high quality; thirdly, prefabricated pier shell type antidetonation connection structure pile foundation owner muscle overhanging and set up the transverse reinforcement, the ductility is good, can be used to the prefabricated assembled bridge underbody structural connection in high earthquake district, application scope is wide.
Drawings
FIG. 1 is a schematic diagram of a shell type anti-seismic connection structure of a prefabricated pier;
FIG. 2 is a schematic elevation view of a shell type earthquake-resistant connection structure of a prefabricated bridge pier and a pile foundation;
fig. 3 is a schematic elevation view of a shell-type anti-seismic connecting structure of a prefabricated pier and a bearing platform.
In the figure, 1-prefabricated bridge pier, 2-pile foundation, 3-positioning stop block, 4-cushion layer, 5-prefabricated bridge pier main rib, 6-pile foundation main rib, 7-transverse steel bar and 8-post-cast joint.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
The first embodiment is as follows:
referring to fig. 1 and 2, a shell type anti-seismic connecting structure for a prefabricated bridge pier comprises a prefabricated bridge pier 1, a pile foundation 2, a positioning stop block 3, a cushion layer 4, a prefabricated bridge pier main rib 5, a pile foundation main rib 6, a transverse steel bar 7 and a post-cast connecting joint 8; prefabricated pier 1 lower part make concave-convex shear force groove, carry out the surface napping before the installation and handle, 2 top surfaces of pile foundation set up location dog 3, pile foundation and prefabricated pier between set up bed course 4, pile foundation owner muscle 6 overhanging, transverse reinforcement 7 be the spiral stirrup, set up in pile foundation owner muscle outer lane, post-cast joint 8 select for use than prefabricated pier high grade concrete, connect into whole with prefabricated pier and pile foundation.
The lower part of the prefabricated pier 1 is made into a (3 multiplied by 5cm) shear groove, and surface roughening treatment is carried out before installation, so that the sufficient combination of the prefabricated pier and post-cast concrete is improved.
The section size of the pile foundation 2 is larger than that of a prefabricated pier by 40cm at the minimum, and the wall thickness of the post-cast joint 8 is 30cm at the minimum.
The section size of the positioning stop block 3 is 10 multiplied by 15cm, and the side face and the bottom of the prefabricated pier keep a distance of 1-2 cm and are used for installation positioning and auxiliary fixing of the prefabricated pier.
The thickness of the cushion layer 4 is 2cm, and the cushion layer is made of C50 epoxy mortar and is arranged between the prefabricated bridge pier and the pile foundation.
The prefabricated pier main ribs 5 are anchored in the prefabricated piers and do not extend outwards.
The pile foundation main reinforcement 6 extends outwards and then is poured into the joint 8, and the extending pile foundation main reinforcement needs to be subjected to rust prevention treatment.
The transverse steel bars 7 are spiral stirrups, and the reinforcement combining mode is adopted within the range of 30cm below the top surface of the post-cast joint 8 for local encryption, so that the integrity of the joint is improved.
And (4) selecting C55 concrete to connect the prefabricated bridge pier and the pile foundation into a whole after-pouring connecting joint 8 with the wall thickness of 40 cm.
Example two:
referring to fig. 3, a shell type anti-seismic connecting structure for a prefabricated bridge pier comprises a prefabricated bridge pier 1, a pile foundation 2, a positioning stop block 3, a cushion layer 4, a prefabricated bridge pier main rib 5, a pile foundation main rib 6, a transverse steel bar 7 and a post-cast joint 8; the prefabricated pier 1 lower part make the unsmooth form shear force groove, carry out the surface napping before the installation and handle, 2 top surfaces of pile foundation set up location dog 3, cushion cap and prefabricated pier between set up bed course 4, the pile foundation owner muscle 6 pre-buried cushion cap, horizontal reinforcing bar 7 for the ring muscle, set up in attach fitting owner muscle outer lane, post-cast joint 8 select for use and be higher one grade concrete than prefabricated pier, connect into whole with prefabricated pier and cushion cap.
The lower part of the prefabricated pier 1 is made into a (3 multiplied by 6cm) shear groove, and surface roughening treatment is carried out before installation, so that the sufficient combination of the prefabricated pier and post-cast concrete is improved.
The cross section of the positioning stop block 3 is 8 multiplied by 15cm in size, and the side face and the bottom of the prefabricated pier keep a distance of 1-2 cm and are used for installation positioning and auxiliary fixing of the prefabricated pier.
The thickness of the cushion layer 4 is 2cm, and the cushion layer is made of C50 epoxy mortar and is arranged between the prefabricated bridge pier and the bearing platform.
The prefabricated pier main ribs 5 are anchored in the prefabricated piers and do not extend outwards.
And connecting pile foundation main reinforcements 6 into the embedded bearing platform, wherein the embedded reinforcements need to be subjected to rust prevention treatment.
The transverse steel bars 7 are ring bars, and are locally encrypted in a bar combining mode within a range of 30cm below the top surface of the post-cast connecting joint 8, so that the integrity of the joint is improved.
And the wall thickness of the post-cast joint 8 is 30cm, and the prefabricated bridge pier and the bearing platform are connected into a whole by using ultra-high performance concrete.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and what is described in the specification are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a prefabricated pier shell type antidetonation connection structure which characterized in that: the prefabricated pier comprises a prefabricated pier, a pile foundation, a positioning stop block, prefabricated pier main ribs, pile foundation main ribs, transverse reinforcing steel bars and a post-cast joint;
pile foundation top surface set up the location dog, prefabricated pier erects on pile foundation, and is located between the position baffle, prefabricated pier in be equipped with prefabricated pier owner muscle, prefabricated pier owner muscle end at prefabricated pier tip, the pile foundation embeds pile foundation owner muscle, pile foundation main muscle outwards extend pile foundation top surface, horizontal setting in pile foundation owner muscle outer lane, the post-cast joint pour at prefabricated pier and pile foundation junction, the post-cast joint wrap up pile foundation owner muscle and prefabricated pier wherein.
2. The shell-type earthquake-resistant connection structure of a precast pier as claimed in claim 1, wherein: the prefabricated bridge pier can be designed to be a circular section or a rectangular section, the lower connecting area is made into a shear groove, and surface roughening treatment is carried out before installation.
3. The shell-type earthquake-resistant connection structure of a precast pier as claimed in claim 1, wherein: and a cushion layer is arranged between the pile foundation and the prefabricated bridge pier.
4. The shell-type earthquake-resistant connection structure of a precast pier as claimed in claim 1, wherein: the pile foundation main rib extends outwards, and the pile foundation main rib extending outwards is subjected to rust prevention treatment.
5. The shell-type earthquake-resistant connection structure of a precast pier as claimed in claim 1, wherein: the diameter of the pile foundation main rib is not less than 22mm, and the pile foundation main rib is subjected to rust prevention treatment.
6. The shell-type earthquake-resistant connection structure of a precast pier as claimed in claim 1, wherein: the transverse steel bar is a spiral stirrup or a ring bar, and is locally encrypted in an area 30cm below the top of the post-cast joint.
7. The shell-type earthquake-resistant connection structure of a precast pier as claimed in claim 1, wherein: the side wall of the bottom of the prefabricated pier is a step surface, and the inner wall of the post-cast joint matched with the side wall is also a step surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022295515.2U CN213951917U (en) | 2020-10-15 | 2020-10-15 | Prefabricated pier shell type anti-seismic connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022295515.2U CN213951917U (en) | 2020-10-15 | 2020-10-15 | Prefabricated pier shell type anti-seismic connecting structure |
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| Publication Number | Publication Date |
|---|---|
| CN213951917U true CN213951917U (en) | 2021-08-13 |
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|---|---|---|---|
| CN202022295515.2U Active CN213951917U (en) | 2020-10-15 | 2020-10-15 | Prefabricated pier shell type anti-seismic connecting structure |
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| Country | Link |
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| CN (1) | CN213951917U (en) |
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