CN209836781U - Connecting structure of precast concrete pier stud and bearing platform - Google Patents
Connecting structure of precast concrete pier stud and bearing platform Download PDFInfo
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- CN209836781U CN209836781U CN201920388823.4U CN201920388823U CN209836781U CN 209836781 U CN209836781 U CN 209836781U CN 201920388823 U CN201920388823 U CN 201920388823U CN 209836781 U CN209836781 U CN 209836781U
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Abstract
The utility model relates to a bridge construction technical field, concretely relates to connection structure of precast concrete pier stud and cushion cap, include: the bearing platform is provided with a cavity for bearing the precast concrete pier stud, a plurality of first steel bars are embedded in the side wall of the cavity, and one ends of the first steel bars extend into the cavity; one end of the precast concrete pier column is arranged in the cavity, a plurality of second steel bars are pre-embedded on the side wall of the precast concrete pier column in the cavity, and one end of each second steel bar extends into the cavity; the connecting assembly is arranged in a cavity space between the bearing platform and the precast concrete pier stud and comprises a plurality of first reinforcing steel bars and a plurality of second reinforcing steel bars which are arranged in a mutually crossed mode and a concrete layer filled in gaps between the first reinforcing steel bars and the second reinforcing steel bars. The utility model provides a construction is simple, and the connection structure of the lower precast concrete pier stud of construction required precision and cushion cap.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to connection structure of precast concrete pier stud and cushion cap.
Background
The pier column is an important component for supporting the upper structure of the bridge and is used for transmitting the load of the upper structure of the bridge to the foundation. In the prior art, the pier column is constructed by adopting a cast-in-place method. The cast-in-place construction needs to bind reinforcing steel bars, erect templates and pour concrete on site, and needs longer construction time. In urban bridge construction, cast-in-place pier columns have great influence on the environment and traffic, so in recent years, in order to accelerate the construction progress and reduce the on-site environmental pollution and the interference on the current traffic, the construction is generally carried out in a mode that relevant parts are prefabricated in a factory in advance and then transported to the site for assembly in the bridge construction process. The prefabrication of pier column parts in the prior art is generally that the pier column parts are integrally prefabricated when the height of the pier column is not high, and then the pier column parts are transported to the site to be spliced with a bearing platform and a cover beam.
The prefabricated pier stud and the bearing platform are connected mainly in the forms of prestressed reinforcement connection, grouting sleeve reinforcement connection, grouting corrugated pipe connection, cast-in-place wet joint connection, socket joint connection and the like. The prestressed reinforcement connection needs to embed prestressed reinforcements on a bearing platform, a prestressed pore channel is reserved on the cross section of the pier column, and the pier column is connected with the bearing platform through tensioning prestress; the grouting sleeve connection is that the prefabricated pier body is connected with the embedded and extended steel bars of the bearing platform through the grouting connecting sleeve; the grouting metal corrugated pipe connection is that the prefabricated pier body is connected with the steel bars extending out of the pier body through the grouting metal corrugated pipe embedded in the bearing platform; the slot type connection is that a notch slightly larger than the section of the column is reserved on the bearing platform, and the prefabricated column is directly inserted and then connected by pouring concrete in a gap between the column and the notch.
The methods have different defects, wherein the pier column is difficult to be installed in place and aligned with the prestressed reserved hole in the prestressed connecting method, and meanwhile, operations such as tensioning, grouting and the like need to be carried out on prestressed tendons in site construction, so that the construction process is complex and the construction time is long. The grouting sleeve steel bar connection and the grouting corrugated pipe connection construction precision requirement is high, the durability and compactness of the grouting material are difficult to check, the construction process needs to be strictly controlled, relevant data are displayed abroad, and the grouting sleeve connection is not recommended in high-intensity earthquake areas. The slot-in type connection generally requires that the depth of the slot of the bearing platform is not less than about 2 times of the diameter of the pier stud, so that the thickness of the bearing platform is required to be increased.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the precast concrete pier stud among the prior art and the construction process of being connected of cushion cap is complicated, the higher defect of construction required precision to it is simple to provide a construction, and the lower precast concrete pier stud of construction required precision and the connection structure of cushion cap.
In order to solve the technical problem, the utility model provides a connection structure of precast concrete pier stud and cushion cap, include:
the bearing platform is provided with a cavity for bearing the precast concrete pier stud, a plurality of first steel bars are embedded in the side wall of the cavity, and one ends of the first steel bars extend into the cavity;
one end of the precast concrete pier column is arranged in the cavity, a plurality of second steel bars are embedded in the side wall of the precast concrete pier column in the cavity, and one end of each second steel bar extends into the cavity;
coupling assembling locates the cushion cap with in the cavity space between the precast concrete pier stud, many including intercrossing sets up first reinforcing bar, many the second reinforcing bar, and pack first reinforcing bar with the concrete layer in the space of second reinforcing bar.
The connecting structure of precast concrete pier stud and cushion cap, first reinforcing bar perpendicular to the lateral wall setting of cavity, the second reinforcing bar perpendicular to the lateral wall setting of precast concrete pier stud.
The precast concrete pier stud and the connection structure of the bearing platform, the first reinforcing steel bar and the second reinforcing steel bar are U-shaped reinforcing steel bars, and the axis perpendicular to of the U-shaped reinforcing steel bars corresponds to the side wall of the cavity or the side wall of the precast concrete pier stud is arranged.
The precast concrete pier stud and the bearing platform are connected, and the open ends of the U-shaped steel bars are embedded in the bearing platform or the precast concrete pier stud.
The precast concrete pier stud and bearing platform connecting structure is characterized in that the first steel bars and the second steel bars are arranged in parallel.
Precast concrete pier stud and connection structure of cushion cap, coupling assembling still includes pre-buried many third reinforcing bars on the cavity diapire, the third reinforcing bar is located the cushion cap with in the cavity space between the precast concrete pier stud, just first reinforcing bar, second reinforcing bar and the equal cross arrangement of third reinforcing bar.
The prefabricated concrete pier stud and the bearing platform are connected, and the axis of the third steel bar is perpendicular to the bottom wall of the cavity.
The precast concrete pier stud and bearing platform connecting structure is characterized in that the first steel bars, the second steel bars and the third steel bars are intersected with each other to form a closed rectangle, and the corner points of the rectangle are horizontally provided with the fourth steel bars.
The horizontal distance between the bearing platform and the cavity space between the precast concrete pier columns is 30-100 cm.
The connecting structure of the precast concrete pier stud and the bearing platform is characterized in that a leveling mortar layer is arranged between the bottom surface of the precast concrete pier stud and the bottom wall of the cavity of the bearing platform.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a connection structure of precast concrete pier stud and cushion cap, precast concrete pier stud and cushion cap form tentatively fixedly through the pre-buried second reinforcing bar in it and the cross arrangement of first reinforcing bar respectively, and the lateral wall of the other end relative with pre-buried end of first reinforcing bar and second reinforcing bar all contactless, then played further fixed effect through the concrete layer of packing in first reinforcing bar and the second reinforcing bar space. Because the alignment operation is not needed, the construction process of the connection between the precast concrete pier column and the bearing platform is simplified on the premise of ensuring the connection firmness of the precast concrete pier column and the bearing platform, the construction difficulty is reduced, and the construction efficiency is improved.
2. The utility model provides a connection structure of precast concrete pier stud and cushion cap, first reinforcing bar and second reinforcing bar are the U-shaped reinforcing bar, and the lateral wall of the corresponding cavity of axis perpendicular to of U-shaped reinforcing bar or the lateral wall setting of precast concrete pier stud. The setting of U-shaped reinforcing bar has further improved preliminary fixed intensity, has guaranteed the stability of whole structure.
3. The utility model provides a connection structure of precast concrete pier stud and cushion cap, pre-buried setting at the many third reinforcing bars of cavity diapire further makes the coupling assembling that first reinforcing bar and second reinforcing bar formed more firm, and intensity is higher to guarantee that the stability of whole structure reaches required requirement.
4. The utility model provides a connection structure of precast concrete pier stud and cushion cap, the horizontal interval in cavity space between cushion cap and the precast concrete pier stud is 30-100 cm. The hoisting precision requirement on construction and precast concrete pier stud is relatively low, and the construction difficulty is reduced.
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 view of a connection structure of a precast concrete pier stud and a bearing platform provided by the present invention;
FIG. 2 is a schematic view of FIG. 1 prior to filling with a concrete layer;
FIG. 3 is a schematic view of the platform of FIG. 1;
fig. 4 is a schematic view of the precast concrete pier stud of fig. 1.
Description of reference numerals:
1-a bearing platform; 2-prefabricating a concrete pier stud; 3-piling; 4-a first rebar; 5-second steel bars; 6-concrete layer; 7-third steel bars; 8-leveling the mortar layer; 9-fourth steel bar; 11-cavity.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
One embodiment of the precast concrete pier and cap coupling structure shown in fig. 1 to 4 includes a cap 1, a precast concrete pier 2, and a coupling assembly for coupling the cap 1 and the precast concrete pier 2. Cushion cap 1 is through concrete placement mode shaping, locates the top of many root piles 3, has the cavity 11 that is used for bearing precast concrete pier stud 2, and cavity 11 is cuboid, square or cylinder etc. just pre-buried on the lateral wall of cavity 11 has many first reinforcing bars 4, and many first reinforcing bars 4 evenly distributed are on the lateral wall of cavity 11, 4 one ends of first reinforcing bar extend to the inside of cavity 11, and contactless precast concrete pier stud 2. The lower end of the precast concrete pier stud 2 is arranged in the cavity 11, the upper end of the precast concrete pier stud is exposed outside the cavity 11 and is located in the cavity 11, a plurality of second steel bars 5 are pre-embedded in the side wall of the precast concrete pier stud 2, the plurality of second steel bars 5 are uniformly distributed on the side wall of the precast concrete pier stud 2, and one end of each second steel bar 5 extends to the inside of the cavity 11 and does not contact with the inner wall of the cavity 11 of the bearing platform 1. Coupling assembling locates cushion cap 1 with in the 11 spaces of cavity between the precast concrete pier stud 2, including many that intercrossing set up first reinforcing bar 4, many second reinforcing bar 5, and pack first reinforcing bar 4 with concrete layer 6 in the space of second reinforcing bar 5.
For the convenience of construction, first reinforcing bar 4 perpendicular to the lateral wall setting of cavity 11, second reinforcing bar 5 perpendicular to the lateral wall setting of precast concrete pier stud 2. First reinforcing bar 4 and the crisscross parallel arrangement of second reinforcing bar 5 promptly, the interlude of being convenient for reduces the construction degree of difficulty each other. Specifically, first reinforcing bar 4 with second reinforcing bar 5 is the U-shaped reinforcing bar, the open end of U-shaped reinforcing bar is pre-buried cushion cap 1 or the inside of precast concrete pier stud 2, the axis perpendicular to of U-shaped reinforcing bar is corresponding the lateral wall of cavity 11 or the lateral wall setting of precast concrete pier stud 2. In this embodiment, the plane of the two arms of the U-shaped steel bar is parallel to the axis of precast concrete pier 2, i.e. vertically distributed in cavity 11 of bearing platform 1.
A plurality of third steel bars 7 are embedded in the bottom wall of the cavity 11, the third steel bars 7 are located in the cavity space between the bearing platform 1 and the precast concrete pier stud 2, and the first steel bars 4, the second steel bars 5 and the third steel bars 7 are arranged in a crossed mode. The third reinforcing steel bars 7 are also U-shaped reinforcing steel bars, and the axis of the third reinforcing steel bars 7 is perpendicular to the bottom wall of the cavity 11. The first steel bars 4, the second steel bars 5 and the third steel bars 7 are mutually crossed to form a closed rectangle, and fourth steel bars 9 are horizontally arranged at corner points of the rectangle. In this embodiment, the third reinforcing bars 7 are arranged perpendicular to the first reinforcing bars 4 and the second reinforcing bars 5, thereby forming a plurality of cage-like structures, and the arrangement of the fourth reinforcing bars 9 further improves the strength and stability of the coupling assembly.
In order to facilitate the hoisting of the precast concrete pier stud 2, the horizontal distance of the cavity space between the bearing platform 1 and the precast concrete pier stud 2 is 30-100 cm, preferably 60 cm.
In order to guarantee the smoothness of the contact surface of the precast concrete pier stud 2 and the bearing platform 1, a leveling mortar layer 8 is arranged between the bottom surface of the precast concrete pier stud 2 and the bottom wall of the cavity 11 of the bearing platform 1, and the thickness of the leveling mortar layer 8 is set according to actual requirements.
The concrete construction method of the connecting structure of the precast concrete pier stud and the bearing platform comprises the following steps:
1) pouring cushion cap 1, reserve the recess that is used for bearing precast concrete pier stud 2 as cavity 11 in the upper portion central authorities of cushion cap 1, when pouring in the lateral wall of recess and diapire periphery pre-buried many first reinforcing bar 4 and third reinforcing bar 7 respectively, the axis mutually perpendicular setting of first reinforcing bar 4 and third reinforcing bar 7.
2) Precast concrete pier stud 2, prefabricated while is pre-buried many second reinforcing bars 5 on the pier stud lower part lateral wall, second reinforcing bar 5 and the axis parallel arrangement of first reinforcing bar 4.
3) And paving a leveling mortar layer 8 at the bottom of the groove.
4) The precast concrete pier stud 2 embedded with the second steel bars 5 is hoisted into a groove of the bearing platform 1, the fourth steel bars 9 are horizontally arranged at corner points of rectangles formed by the first steel bars 4, the second steel bars 5 and the third steel bars 7, and the precast concrete pier stud is fixed by adopting a temporary fixing measure after adjustment.
5) Non-shrinkage concrete is poured into a gap between the precast concrete pier stud 2 and the groove of the bearing platform 1, and a concrete layer 6 is formed after curing.
Alternatively, the first, second and third reinforcing bars 4, 5 and 7 may be all common linear reinforcing bars.
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 (10)
1. The utility model provides a connection structure of precast concrete pier stud and cushion cap which characterized in that includes:
the bearing platform (1) is provided with a cavity (11) for bearing the precast concrete pier stud (2), a plurality of first steel bars (4) are embedded in the side wall of the cavity (11), and one ends of the first steel bars (4) extend into the cavity (11);
one end of the precast concrete pier column (2) is arranged in the cavity (11), a plurality of second steel bars (5) are embedded in the side wall of the precast concrete pier column (2) in the cavity (11), and one end of each second steel bar (5) extends into the cavity (11);
coupling assembling locates cushion cap (1) with in the cavity space between precast concrete pier stud (2), including many that intercrossing set up first reinforcing bar (4), many second reinforcing bar (5), and pack first reinforcing bar (4) with concrete layer (6) in the space of second reinforcing bar (5).
2. The precast concrete pier and cap connection structure according to claim 1, wherein the first reinforcing bars (4) are disposed perpendicular to the side wall of the cavity (11), and the second reinforcing bars (5) are disposed perpendicular to the side wall of the precast concrete pier (2).
3. The precast concrete pier and cap connection structure according to claim 2, wherein the first reinforcement (4) and the second reinforcement (5) are both U-shaped reinforcements, and the axes of the U-shaped reinforcements are arranged perpendicular to the corresponding side wall of the cavity (11) or the precast concrete pier (2).
4. The precast concrete pier and abutment connection structure according to claim 3, wherein the open ends of the U-shaped reinforcing bars are embedded in the abutment (1) or the precast concrete pier (2).
5. The precast concrete pier and cap connection structure according to claim 3, wherein the first reinforcing bars (4) and the second reinforcing bars (5) are arranged in parallel.
6. The connecting structure of the precast concrete pier column and the bearing platform according to any one of claims 1 to 5, wherein the connecting assembly further comprises a plurality of third steel bars (7) pre-embedded on the bottom wall of the cavity (11), the third steel bars (7) are positioned in the cavity space between the bearing platform (1) and the precast concrete pier column (2), and the first steel bars (4), the second steel bars (5) and the third steel bars (7) are arranged in a crossed manner.
7. The precast concrete pier and cap connection structure according to claim 6, wherein the axis of the third reinforcing bar (7) is disposed perpendicular to the bottom wall of the cavity (11).
8. The precast concrete pier stud and bearing platform connection structure according to claim 7, wherein the first, second and third reinforcing bars (4, 5, 7) are crossed with each other to form a closed rectangle, and a fourth reinforcing bar (9) is horizontally arranged at the corner point of the rectangle.
9. The precast concrete pier and abutment connection structure according to claim 6, wherein the horizontal interval of the cavity space between the abutment (1) and the precast concrete pier (2) is 30-100 cm.
10. The precast concrete pier stud and cap connection structure according to any one of claims 1 to 5, wherein a leveling mortar layer (8) is provided between the bottom surface of the precast concrete pier stud (2) and the bottom wall of the cavity (11) of the cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920388823.4U CN209836781U (en) | 2019-03-25 | 2019-03-25 | Connecting structure of precast concrete pier stud and bearing platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920388823.4U CN209836781U (en) | 2019-03-25 | 2019-03-25 | Connecting structure of precast concrete pier stud and bearing platform |
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| CN209836781U true CN209836781U (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089500A (en) * | 2021-05-18 | 2021-07-09 | 中国建筑股份有限公司 | Socket type connecting structure based on T-shaped groove and construction method thereof |
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2019
- 2019-03-25 CN CN201920388823.4U patent/CN209836781U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089500A (en) * | 2021-05-18 | 2021-07-09 | 中国建筑股份有限公司 | Socket type connecting structure based on T-shaped groove and construction method thereof |
| CN113089500B (en) * | 2021-05-18 | 2022-05-24 | 中国建筑股份有限公司 | Socket type connecting structure based on T-shaped groove and construction method thereof |
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