CN220202439U - Combined bridge pier column adopting UHPC wet joints - Google Patents
Combined bridge pier column adopting UHPC wet joints Download PDFInfo
- Publication number
- CN220202439U CN220202439U CN202320990270.6U CN202320990270U CN220202439U CN 220202439 U CN220202439 U CN 220202439U CN 202320990270 U CN202320990270 U CN 202320990270U CN 220202439 U CN220202439 U CN 220202439U
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- reserved groove
- reserved
- connecting section
- hollow
- uhpc
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 37
- 239000000945 filler Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 27
- 239000011178 precast concrete Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a combined bridge pier adopting UHPC wet joints, which comprises the following components: bearing platform and hollow pier column; a reserved groove is formed in the middle of the bearing platform, and a reserved tenon is formed in the middle of the reserved groove; the inner edge of one end of the hollow pier column is fixedly connected with a connecting section; the wall thickness of the connecting section is smaller than that of the side wall of the hollow pier column; the connecting section stretches into the reserved groove, and the reserved tenon stretches into the hollow area of the connecting section; the hollow pier column is also wrapped with a first longitudinal rib; one end of the first longitudinal rib is provided with a hollow pier column end face and extends into the reserved groove; the bearing platform is internally wrapped with a second longitudinal rib; one end of the second longitudinal rib penetrates through the bottom wall of the reserved groove and extends into the reserved groove; the reserved groove is filled with UHPC filler. The utility model can simplify the connection structure of the precast concrete pier, accelerate the bridge construction, reduce the construction precision, and has reliable connection performance, good integrity and strong bearing capacity.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a combined bridge pier adopting UHPC wet joints.
Background
For traditional wet joint connection, the required lap length is longer, the wet workload is also larger, measures are needed to temporarily support the prefabricated pier during construction, and the construction efficiency is lower. For traditional socket connection, as no steel bars are connected between the pier body and the capping beam or the bearing platform, the depth and the size of the socket hole reserved in the component are often larger, the component with the reserved hole is required to have enough strength around the reserved hole to resist the prying force caused by horizontal deformation of the prefabricated pier under the action of earthquake, the size of the reserved hole and the influence of the bearing platform, the capping beam and other component local reinforcement structures on the mechanical property of the bridge are required to be carefully considered, the technical requirements are strict in the pier column manufacturing process, the construction precision requirement is higher, and the construction difficulty is higher.
Therefore, there is a need for a modular bridge pier employing a wet UHPC joint to solve the above problems, simplify the connection structure of precast concrete piers, accelerate bridge construction, and reduce construction accuracy.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the combined bridge pier stud adopting the UHPC wet joint, which can simplify the connection structure of the precast concrete pier, accelerate bridge construction, reduce construction precision, and has reliable connection performance, good integrity and strong bearing capacity.
To achieve the above object, the present utility model provides a modular bridge pier employing a UHPC wet joint, comprising: bearing platform and hollow pier column; a reserved groove is formed in the middle of the bearing platform, and a reserved tenon is formed in the middle of the reserved groove; the inner edge of one end of the hollow pier column is fixedly connected with a connecting section; the wall thickness of the connecting section is smaller than that of the side wall of the hollow pier column; the connecting section stretches into the reserved groove, and the reserved tenon stretches into the hollow area of the connecting section; the hollow pier column is internally wrapped with a first longitudinal rib; one end of the first longitudinal rib penetrates through the end face of the hollow pier stud and extends into the reserved groove; the bearing platform is internally wrapped with a second longitudinal rib; one end of the second longitudinal rib penetrates through the bottom wall of the reserved groove and extends into the reserved groove; UHPC filler is filled in the reserved groove.
According to a further optimization scheme, the reserved groove and the connecting section are annular.
According to a further optimization scheme, the UHPC filler is made of an ultra-high-performance concrete material, and the ultra-high-performance concrete material is filled in the residual space outside the first longitudinal ribs, the second longitudinal ribs and the connecting section in the reserved groove.
According to a further optimization scheme, a plurality of groups of first longitudinal ribs and second longitudinal ribs are arranged circumferentially in an equidistant and centripetal mode with the circle center of the reserved groove, and the reinforcing steel bars adjacent to the first longitudinal ribs are the second longitudinal ribs; the side surfaces of two adjacent longitudinal ribs are in non-contact lap joint. The first longitudinal ribs and the second longitudinal ribs are arranged in a pairwise overlapping mode.
According to a further optimization scheme, the diameter of the outer edge of the hollow pier stud is smaller than the diameter of the outer ring of the reserved groove. That is, when the hollow pier stud is installed in the pre-groove, the outer ring of the pre-groove and the UHPC filler in the outer ring still have partial gaps exposed outside.
According to a further optimization scheme, the diameter of the reserved tenon is smaller than the diameter of the hollow area of the connecting section. Namely, the side wall of the connecting section is not attached to the side wall of the reserved tenon, a small gap exists between the side wall of the connecting section and the side wall of the reserved tenon, and the UHPC filler fills the gap.
The utility model discloses the following technical effects:
1. compared with the traditional wet joint mode, the utility model has the advantages that the wet joint position is placed below the plane of the bearing platform, a template is not required to be used, the construction procedures are reduced, and the construction difficulty is reduced.
2. Through seting up the reservation groove at the cushion cap middle part, make the reservation groove separate the cushion cap and form cushion cap up end and inboard reservation tenon in the outside, accurate location leveling when conveniently assembling to provide certain bearing capacity, reduce the possibility that the toppling takes place after the installation is accomplished, increase the security of construction. Compared with the traditional wet joint mode, the connecting section is inserted into the reserved groove, so that the stress and the earthquake resistance of the pier are increased, and the bridge pier has the advantages of good integrity, practical and feasible construction, simplicity and convenience in construction, good earthquake resistance and the like.
3. Through filling UHPC filler in the reserve tank surplus space, combine together UHPC and linkage segment and reservation tenon, under the prerequisite of guaranteeing required intensity, can effectively reduce reinforcing bar burying length and construction required time, improve the mechanical properties of seam crossing, and simplify the structure, reduce the stirrup use amount and even need not the stirrup, both reduced on-the-spot construction work load, increased construction convenience, also avoided traditional wet seam region to cause adverse effect to grouting material quality because of the reinforcing bar crowding, construction quality is controllable.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of a hollow pier column of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a cross-sectional view B-B of FIG. 1;
1, a bearing platform; 2. a hollow pier column; 3. a connection section; 4. a reserved groove; 5. a first longitudinal rib; 6. a second longitudinal rib; 7. reserving tenons; 8. UHPC filling.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-4, the present utility model provides a modular bridge pier employing a UHPC wet joint comprising: a bearing platform 1 and a hollow pier stud 2; a reserved groove 4 is formed in the middle of the bearing platform 1, and a reserved tenon 7 is formed in the middle of the reserved groove 4; the inner edge of one end of the hollow pier column 2 is fixedly connected with a connecting section 3; the wall thickness of the connecting section 3 is smaller than that of the side wall of the hollow pier column 2; the connecting section 3 stretches into the reserved groove 4, the reserved tenon 7 stretches into the hollow area of the connecting section 3, a certain supporting force is provided when UHPC is not poured in the initial stage of installation and the strength of the UHPC is not increased after the UHPC is poured, the possibility of rollover during the installation of the pier is reduced, and the mechanical property of the pier is further improved.
In one embodiment of the utility model, the hollow pier column 2 is also internally wrapped with a first longitudinal rib 5; one end of the first longitudinal rib 5 penetrates through the end face of the hollow pier column 2 and extends into the reserved groove 4; the bearing platform 1 is internally wrapped with a second longitudinal rib 6; one end of the second longitudinal rib 6 penetrates through the bottom wall of the reserved groove 4 and extends into the reserved groove 4; the longitudinal ribs penetrate through the bridge pier from top to bottom, and the structural integrity is strong. The reservation groove 4 is filled with UHPC filler 8.
In one embodiment of the utility model, the UHPC filling 8 is made of ultra-high performance concrete material, which fills the remaining space outside the first longitudinal ribs 5, the second longitudinal ribs 6 and the connecting section 3 in the pre-groove 4.
It can be understood that when the hollow pier stud 2 is hoisted, the connecting section 3 is segmented into the reserved groove 4, and the side wall of the hollow pier stud 2 is positioned outside the reserved groove 4. Because the thickness of the side wall of the hollow pier column 2 is greater than the wall thickness of the connecting section 3, only the inner edge part of the lower end surface of the hollow pier column 2 is fixedly connected with the connecting section 3, and the first longitudinal ribs 5 penetrate through the part of the lower end surface of the hollow pier column 2, which is not connected with the connecting section 3, and extend into the reserved groove 4. The UHPC filler 8 fills the residual space of the reserved groove 4, and the good anchoring performance of the UHPC is utilized, so that the joint length of the reinforcing steel bars is reduced while the connection reliability of the reinforcing steel bars is ensured, and the feasibility of construction is ensured. The hollow pier column 2 and the bearing platform 1 are connected into a whole through wet joints in the reserved groove 4, and then the assembly is completed. The wet joint area is placed below the upper end face of the bearing platform 1, so that the use of templates is reduced in the construction process, and the compactness of the template is easy to observe and detect in grouting, so that the complexity of the construction process can be reduced, and the construction quality can be guaranteed.
In one embodiment of the present utility model, the first longitudinal ribs 5 and the second longitudinal ribs 6 are arranged in a one-to-one correspondence; the first longitudinal ribs 5 and the second longitudinal ribs 6 are arranged in the circumferential direction at equal intervals by taking the center of the reserved groove 4 as the center, and the reinforcing steel bars adjacent to the first longitudinal ribs 5 are the second longitudinal ribs 6; the side surfaces of two adjacent longitudinal ribs are in non-contact lap joint. The first longitudinal ribs 5 and the second longitudinal ribs 6 are overlapped in pairs. The first longitudinal ribs 5 and the second longitudinal ribs 6 are connected in a non-contact lap joint mode, the first longitudinal ribs 5 and the second longitudinal ribs 6 are not in direct contact, force is transferred to the UHPC filler 8 through the first longitudinal ribs 5, and then transferred to the second longitudinal ribs 6 through the UHPC filler 8, so that an effective force transfer path is formed, and the requirement on construction precision is reduced. The first longitudinal ribs 5 and the second longitudinal ribs 6 are arranged in the circumferential direction at equal intervals with the circle center of the reserved groove 4.
In one embodiment of the utility model, the diameter of the outer edge of the hollow pier stud 2 is smaller than the diameter of the outer ring of the prepared groove 4. That is, when the hollow pier stud 2 is installed in the pre-groove 4, a part of the gap on the outer ring of the pre-groove 4 is exposed to the outside, so that the UHPC filler 8 is poured into the pre-groove 4.
In one embodiment of the utility model, the diameter of the retaining tenon 7 is smaller than the diameter of the hollow area of the connecting segment 3. Namely, the side wall of the connecting section 3 is not attached to the side wall of the reserved tenon 7, a small amount of gap exists between the connecting section 3 and the reserved tenon 7, so that the requirement on precision in the construction process is reduced, the pier stud is convenient to install, and the UHPC filler 8 is filled in the gap.
In one embodiment of the present application, both the pregroove 4 and the connecting section 3 are annular.
The specific construction process comprises the following steps:
step one: according to the actual engineering design, the dimensions and the lengths of the hollow pier stud 2 and the connecting section 3, the dimensions and the heights of the reserved groove 4 and the dimensions and the heights of the reserved tenon 7, the diameter of the reserved groove 4 is larger than that of the connecting section 3, and the diameter of the reserved tenon 7 is smaller than that of the hollow area of the connecting section 3.
Step two: and constructing the bearing platform 1 and the hollow pier column 2 in a prefabricated mode, and fixing and reserving the bearing platform 1, the prefabricated hollow pier column 2 component embedded bars and the reserved groove 4 strictly according to the positions of the prefabricated hollow pier column 2 during pouring.
Step three: and (3) integrally hoisting, wherein during hoisting, the hollow area of the connecting section 3 of the hollow pier and the reserved tenon 7 are positioned, the centers are aligned, and the leveling is calibrated. The first longitudinal ribs 5 and the second longitudinal ribs 6 are overlapped, the side surfaces are not contacted, and the overlapping length is ensured.
Step four: and after the wet joints are poured and positioned and leveled, pouring ultra-high performance concrete from a gap between the reserved groove 4 and the hollow pier column 2, detecting compactness, and completing connection of the first longitudinal ribs 5, the second longitudinal ribs 6, the connecting section 3 and the reserved tenons 7, thereby completing connection of the bearing platform 1 and the hollow pier column 2.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (5)
1. A modular bridge pier employing a UHPC wet joint comprising: a bearing platform (1) and a hollow pier column (2); a reserved groove (4) is formed in the middle of the bearing platform (1), and a reserved tenon (7) is formed in the middle of the reserved groove (4); the inner edge of one end of the hollow pier column (2) is fixedly connected with a connecting section (3); the wall thickness of the connecting section (3) is smaller than that of the side wall of the hollow pier column (2); the connecting section (3) stretches into the reserved groove (4), and the reserved tenon (7) stretches into the hollow area of the connecting section (3); the hollow pier column (2) is internally wrapped with a first longitudinal rib (5); one end of the first longitudinal rib (5) penetrates through the end face of the hollow pier column (2) and extends into the reserved groove (4); the bearing platform (1) is internally wrapped with a second longitudinal rib (6); one end of the second longitudinal rib (6) penetrates through the bottom wall of the reserved groove (4) and extends into the reserved groove (4); UHPC filler (8) is filled in the reserved groove (4).
2. A modular bridge pier employing a wet UHPC joint according to claim 1, characterized in that the pregroove (4) and the connecting section (3) are both ring-shaped.
3. The combined bridge pier adopting the UHPC wet joint according to claim 2, wherein the first longitudinal ribs (5) and the second longitudinal ribs (6) are arranged in a centripetal circumferential direction by taking the center of the reserved groove (4) as the center; the steel bars adjacent to the first longitudinal bars (5) are the second longitudinal bars (6).
4. The combined bridge pier adopting the UHPC wet joint according to claim 1, wherein the outer diameter of the hollow pier (2) is smaller than the outer diameter of the reserved groove (4).
5. A modular bridge pier employing wet UHPC joints according to claim 1, characterized in that the reserved tenons (7) have a smaller diameter than the hollow area of the connecting section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320990270.6U CN220202439U (en) | 2023-04-27 | 2023-04-27 | Combined bridge pier column adopting UHPC wet joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320990270.6U CN220202439U (en) | 2023-04-27 | 2023-04-27 | Combined bridge pier column adopting UHPC wet joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220202439U true CN220202439U (en) | 2023-12-19 |
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ID=89149167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320990270.6U Active CN220202439U (en) | 2023-04-27 | 2023-04-27 | Combined bridge pier column adopting UHPC wet joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220202439U (en) |
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2023
- 2023-04-27 CN CN202320990270.6U patent/CN220202439U/en active Active
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