CN212103637U - Quick connection structure between prefabricated pier stud and base - Google Patents
Quick connection structure between prefabricated pier stud and base Download PDFInfo
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- CN212103637U CN212103637U CN202020059105.5U CN202020059105U CN212103637U CN 212103637 U CN212103637 U CN 212103637U CN 202020059105 U CN202020059105 U CN 202020059105U CN 212103637 U CN212103637 U CN 212103637U
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Abstract
The utility model provides a fast connecting structure between a prefabricated pier stud and a base, which comprises the prefabricated pier stud and the base, wherein a post-pouring groove and a connecting column are arranged on the upper part of the base, and concave-convex shear keys are arranged on the side walls of the post-pouring groove and the connecting column; the shear pin is arranged at the top of the connecting column, is positioned at the center of the connecting column, and consists of a shear steel plate, shear steel bars and concrete; the prefabricated pier column consists of a pier column body, pier column main ribs and an anti-shearing pin groove, wherein the pier column main ribs are pre-embedded in the pier column body, and then penetrate out of the bottom of the pier column body; the pier stud body and the connecting column are connected through the splicing seam, the main pier stud rib extends into the post-pouring groove of the base, and a post-pouring belt is poured. The utility model discloses connection structure connection accuracy requires to hang down, construction tolerance is big, construction speed is fast, the quality is easily guaranteed, simple structure is with low costs, the seam ability of shearing is strong, has realized the high-speed joint between prefabricated pier stud and base. Meanwhile, the cost is low, and the method is favorable for engineering popularization and application.
Description
Technical Field
The utility model relates to a bridge construction field especially relates to a quick connect structure between prefabricated pier stud and base.
Background
In recent years, with the increase of infrastructure investment in China, a large amount of bridge engineering in railways, highways and municipal roads is built, meanwhile, novel building modes such as green building and intelligent building are continuously promoted, and the bridge pier prefabrication, splicing and building technology is widely concerned. When the pier is prefabricated and built, the pier columns are prefabricated in a factory, the prefabricated pier columns are transported to the site to be assembled, a splicing seam exists between the pier columns and the base, and the strength and the construction speed of the splicing seam directly influence the performance and the construction speed of the pier.
At present, the prefabricated pier stud and the base are connected through sleeve grouting, a grouting sleeve is embedded in the prefabricated pier stud or the base, reinforcing steel bars are reserved in the corresponding position of the base or the prefabricated pier stud, the reinforcing steel bars are inserted into the grouting sleeve one by one during assembling, and the grouting sleeve is grouted one by one to complete assembling. The corrugated pipe connection is adopted in some projects, main ribs extend out of the bottom of the prefabricated pier stud, the corrugated pipes are embedded in the base, the main ribs are inserted into the embedded corrugated pipes one by one during assembly, and the corrugated pipes are grouted one by one to complete assembly. The above-mentioned conventional connection method needs to overcome the following problems:
1. the connection precision is high, and construction tolerance is little, need with reinforcing bar and grout sleeve or pre-buried bellows one-to-one and position coincidence, and two parts are arranged in prefabricated pier stud and base respectively, need adopt very strong auxiliary positioning instrument to carry out the accurate positioning to both positions when two parts are under construction, increased the cost.
2. The construction speed is slow, and during the construction, the reinforcing bars need to be inserted into the pre-buried grouting sleeves and the corrugated pipes one by one, and then grouting is carried out one by one, so that the construction process and time are increased.
3. The quality control degree of difficulty is big, because of grout sleeve or bellows are located inside the structure, are difficult to inspect grout quality, closely knit degree etc. and the connection performance of structure depends on the mud jacking effect completely, has increased the degree of difficulty of control quality.
4. When grouting sleeves or corrugated pipes are embedded in the base, each grouting sleeve or corrugated pipe is required to be provided with a grout pressing port and a grout outlet, and the grouting sleeves or corrugated pipes are required to be led out of the structure one by utilizing pipelines, so that the structure is complex.
In order to solve the problems, the development of a rapid connection structure between a prefabricated pier stud and a base and a construction method are problems to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a quick connect structure and construction method between prefabricated pier stud and base, this connection structure connection precision requirement is low, construction tolerance is big, the construction speed is fast, the quality is easily guaranteed, simple structure is with low costs, the seam ability of shearing is strong, has realized being connected fast between prefabricated pier stud and base.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a fast connecting structure between a prefabricated pier stud and a base comprises the prefabricated pier stud and the base, wherein a post-pouring groove is formed in the upper portion of the base, a connecting post is arranged in the post-pouring groove on the base, concave-convex shear keys which are matched with each other are arranged on the side walls of the post-pouring groove and the connecting post, and a shear pin is arranged in the center of the top of the connecting post; the prefabricated pier column comprises a pier column body, pier column main ribs and a shear pin slot, wherein the pier column main ribs are pre-embedded in the pier column body and are positioned in the position, close to the outer side wall, in the pier column body, the pier column main ribs penetrate through the pier column body from top to bottom, and the pier column main ribs penetrate out of the bottom of the pier column body; a shear pin groove is formed in the bottom of the pier stud body opposite to the shear pin, and a mud jacking hole and a mud discharging hole are formed in the shear pin groove; the pier column body is connected with the connecting column through a splicing seam material, the main pier column rib extends into the post-pouring groove of the base, and a post-pouring belt is poured.
Further, the shear pin comprises a shear steel plate, shear steel bars are arranged in the shear steel plate, stirrups are arranged on the shear steel bars, the shear steel plate serves as a template, concrete of the shear pin is poured, and the concrete is poured to the top of the shear steel plate. The length, width and height of the shear pin are 25cm longer, wider and shorter than the shear pin groove, so that the shear pin can conveniently extend into the shear pin groove and plays a role in positioning during assembly.
Furthermore, the stirrup is arranged in the horizontal direction perpendicular to the pier stud main rib, the stirrup is arranged in the height direction of the pier stud main rib, the stirrup enhances the integrity and rigidity of the main rib, and the anchoring length of the pier stud main rib extending into the post-pouring groove is reduced. Pier stud owner muscle tip sets up the anchor bar, the anchor bar adopts ordinary reinforcing bar, welds in pier stud owner muscle tip, the anchor bar is one or more, and length reduces anchor length for more than triple pier stud owner muscle diameter.
Furthermore, the inner side of the main pier stud rib is 510cm larger than one side of the outer contour of the connecting column, and the extension length of the main pier stud rib is 5cm smaller than that of the connecting column, so that the main pier stud rib can conveniently extend into the post-pouring groove.
Furthermore, an oblique notch is formed in the post-pouring groove and is larger than the pier stud body, so that post-pouring concrete is convenient to construct, and the construction quality is checked.
Furthermore, the shear key is a concave-convex concrete key, an annular reinforcing steel bar is arranged in the shear key, and the annular reinforcing steel bar has an annular hoop effect on the post-cast strip, so that the connection performance of the post-cast strip is enhanced, the shearing resistance of the shear key is improved, the shearing resistance among the post-cast strip, the post-cast groove and the connecting column is enhanced, and the required height of the post-cast strip is reduced.
Furthermore, the anti-shear pin is connected to mud jacking hole and play thick liquid hole one side, and one side stretches out prefabricated pier stud.
Furthermore, the post-cast strip is filled in the post-cast groove, and the main reinforcement of the anchoring pier column can be made of ultra-high performance concrete or high-strength slurry. The ultra-high performance concrete has super-strong bond stress, can show the length that reduces pier stud owner muscle and stretch into the post-cast groove, reduces the manufacturing degree of difficulty and saves the engineering volume, and simultaneously, the ultra-high performance concrete can realize self-leveling, self-compaction and exempt from the vibration, and construction convenience is swift, the quality control of being convenient for.
Furthermore, the pier column body and the connecting column are connected through construction by a mortar sitting method, and the splicing seam material is ultra-high performance concrete or high-strength mortar. Can set up interim steel shotcrete post in the below when the pier stud is deposited, steel shotcrete post length is greater than pier stud owner muscle, demolishs the steel shotcrete again when treating the on-the-spot assembly.
Furthermore, grouting slurry after pressure injection is carried out on the gap between the shear pin and the shear pin groove, so that the shear pin and the shear pin groove are integrated to play a shear-resistant role, and the post-grouting slurry adopts non-shrinkage pressure slurry.
Compared with the prior art, quick connect structure and construction method between prefabricated pier stud and base have following advantage:
(1) the quick connecting structure has large tolerance error and is convenient for construction; the post-pouring groove is provided with a larger space, so that the main pier stud rib can be conveniently stretched into the post-pouring groove, the requirements on the position and the deviation of the main pier stud rib are relatively low, and an auxiliary positioning tool is not required to be adopted for the main pier stud rib during manufacturing of the pier stud.
(2) This quick connect structure assembles construction speed very fast, and efficiency is very high, and prefabricated pier stud and spliced pole sit thick liquid construction after accomplishing, once pour the post-cast strip, need not to grout the reinforcing bar one by one, have simplified the process, are showing and have promoted the speed of assembling.
(3) The construction quality of the quick connection structure is easy to guarantee, the pouring belt is poured by a conventional method after construction, the construction is not hidden, the inspection is convenient, and the construction quality is good.
(4) The post-cast groove and the connecting column in the base of the quick connecting structure adopt concave-convex shear keys, the manufacturing is simple, and the height of a post-cast strip is reduced; the shear pin is convenient to construct by taking a steel plate as a template, forms a steel pipe concrete structure with concrete, and arranges shear steel bars in the steel pipe concrete structure to form a strong shear structure together, so that the shear performance of the joint is obviously enhanced.
(5) The post-cast strip of the quick connection structure adopts the ultra-high performance concrete, so that the length of the pier stud main reinforcement extending into the post-cast groove can be obviously reduced, the manufacturing difficulty is reduced, the engineering quantity is saved, the ultra-high performance concrete can realize self-leveling, self-compaction and vibration-free, and the construction is convenient and quick; meanwhile, the post-cast strip has less material consumption and low cost, and is favorable for engineering popularization and application.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a front view of the base;
FIG. 4 is a schematic cross-sectional view I-I of FIG. 3;
fig. 5 is a front view of a prefabricated pier stud;
fig. 6 is a schematic sectional view II-II of fig. 5.
Description of reference numerals:
1. a base; 2. connecting columns; 3. a pier stud body; 4. splicing seams; 5. post-pouring a belt; 6. pier stud main reinforcement; 7. hooping; 8. post-casting the groove; 9. a shear key; 10. oblique incision; 11. shear reinforcement bars; 12. shear resistant steel plates; 13. shear pin resistant concrete; 14. a shear pin slot; 15. then pouring slurry; 16. grouting holes; 17. a slurry outlet; 18. and (6) anchoring the ribs.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-6, a fast connection structure between a prefabricated pier stud and a base comprises a prefabricated pier stud and a base 1, wherein a post-pouring groove 8 is arranged at the upper part of the base 1, a connecting column 2 is arranged in the post-pouring groove 8 on the base 1, concave-convex shear keys 9 matched with each other are arranged on the side walls of the post-pouring groove 8 and the connecting column 2, each shear key 9 is a concave-convex concrete key, annular reinforcing steel bars are arranged in the shear keys 9, and form an annular hoop effect on a post-pouring belt, so that the connection performance of the post-pouring belt is enhanced, the shear resistance of the shear keys is improved, the shear resistance between the post-pouring belt and the post-pouring groove and the connecting column is enhanced, and the required height of the post-pouring belt is reduced. The center of the top of the connecting column 2 is provided with a shear pin, the shear pin comprises a shear steel plate 12, a shear steel bar 11 is arranged in the shear steel plate 12, the shear steel bar 11 is provided with a stirrup, the shear steel plate 12 is used as a template, concrete 13 of the shear pin is poured, and the concrete is poured to the top of the shear steel plate 12. The length, width and height of the shear pin are 25cm longer, wider and shorter than the shear pin groove, so that the shear pin can conveniently extend into the shear pin groove and plays a role in positioning during assembly. The shear steel plates and the shear steel bars of the shear pin are embedded in the connecting column, and the shear steel plates are located on the periphery of the shear pin. The shear steel plate provides the ability of shearing on the one hand, and another conveniently is template when concrete placement concurrently. Prefabricated pier stud includes pier stud body 3, pier stud owner muscle 6 and shear pin groove 14 pre-buried pier stud owner muscle 6 that has in the pier stud body 3, pier stud owner muscle 6 is located the position that is close to the lateral wall in the pier stud body 3, pier stud owner muscle 6 runs through pier stud body 3 from top to bottom, and pier stud owner muscle 6 wears out from the bottom of pier stud body 3, with pier stud owner muscle 6 vertically horizontal direction is equipped with stirrup 7, stirrup 7 is arranged along pier stud owner muscle 6 direction of height, and the wholeness and the rigidity of stirrup reinforcing owner muscle to the anchor length of pouring the groove after having reduced pier stud owner muscle and stretching into. 6 tip of pier stud owner muscle sets up anchor 18, anchor 18 adopts ordinary reinforcing bar, welds in 6 tip of pier stud owner muscle, anchor 18 is one or more, and length is more than 3 times pier stud owner muscle diameters, reduces anchor length. The inner side of the pier stud main rib 6 is 510cm larger than one side of the outer contour of the connecting column 2, and the extending length of the pier stud main rib 6 is 5cm smaller than that of the connecting column 2, so that the pier stud main rib can conveniently extend into the post-pouring groove. Shear pin groove 14 is located pier stud body 3 bottom, sets up at pier stud body 6 center shear pin groove 14 is equipped with mud jacking hole 16 and grout outlet 17, the shear pin is connected to mud jacking hole 16 and grout outlet 17 one side, and prefabricated pier stud is stretched out to one side. The pier column body 3 and the connecting column 2 are connected through construction by a mortar sitting method, the pier column body 3 and the connecting column 2 are connected through a splicing seam 4, and the splicing seam 4 is made of ultra-high-performance concrete or high-strength mortar. And (3) extending the pier stud main reinforcement 6 into a post-pouring groove 8 of the base 1, and pouring a post-pouring belt 5. Can set up interim steel shotcrete post in the below when the pier stud is deposited, steel shotcrete post length is greater than pier stud owner muscle, demolishs the steel shotcrete again when treating the on-the-spot assembly. And an oblique notch 10 is arranged on the post-pouring groove 8, and the oblique notch 10 is larger than the pier stud body 3, so that post-pouring concrete is convenient to construct, and the construction quality is checked. The post-cast strip 5 is filled in the post-cast groove 8, and the main pier column anchoring ribs 6 can be made of ultra-high performance concrete or high-strength slurry. The ultra-high performance concrete has super-strong bond stress, can show the length that reduces pier stud owner muscle and stretch into the post-cast groove, reduces the manufacturing degree of difficulty and saves the engineering volume, and simultaneously, the ultra-high performance concrete can realize self-leveling, self-compaction and exempt from the vibration, and construction convenience is swift, the quality control of being convenient for. And injecting the post-grouting slurry 15 into the gap between the shear pin and the shear pin groove 14 to enable the shear pin and the shear pin groove to form a whole body to play a shear-resisting role, wherein the post-grouting slurry 15 is non-shrinkage grouting slurry.
A construction method adopting the rapid connection structure between the prefabricated pier stud and the base comprises the following steps:
step one, constructing a base 1, wherein a post-pouring groove 8 and a connecting column 2 are arranged at the upper part of the base 1, concave-convex shear keys 9 are arranged on the side walls of the post-pouring groove 8 and the connecting column 2, and meanwhile, an oblique notch 10 is arranged on the post-pouring groove 8; pre-burying a shear steel plate 12 and a shear steel bar 11 at the upper part of the connecting column 2, pouring concrete 13 of a shear pin by using the shear steel plate 12 as a template, and pouring the concrete to the top of the shear steel plate 12;
step two, prefabricating the pier stud, wherein the main pier stud rib 6 extends out of the pier stud body 3 during prefabrication, and a stirrup 7 is arranged on the periphery of the main pier stud rib 6; the bottom of the pier stud body 3 is provided with a shear pin groove 14, and the shear pin groove 14 is provided with a mud jacking hole 16 and a mud outlet hole 17;
transporting the prefabricated pier stud to a site to be in place, arranging a rubber pad at the top of the connecting column 2, laying a splicing seam 4 to connect slurry, realizing plane position positioning between the prefabricated pier stud and the base 1 through the position relation between a shear pin and a shear pin groove 14, hoisting the prefabricated pier stud and the connecting column 2 for installation by a slurry sitting method, and arranging a temporary device to adjust the posture of the prefabricated pier stud and temporarily support the prefabricated pier stud; simultaneously, the pier stud main reinforcement 6 extends into the post-pouring groove 8;
pouring the post-pouring belt 5 from the oblique notch 10, and filling the post-pouring belt 5 into a post-pouring groove 8;
fifthly, injecting the post-pouring slurry 15 into the gap between the shear pin and the shear pin groove 14 through the slurry injection hole 16 until the pouring slurry flows out from the slurry outlet hole 17;
and step six, finishing construction after the post-pouring belt 5 and the post-pouring slurry 15 are maintained in place.
A large space is reserved through the post-pouring groove, the main pier stud rib can be conveniently stretched into the post-pouring groove, the requirements on the position and the deviation of the main pier stud rib are relatively low, the tolerance error is large, and construction is facilitated. After the prefabricated pier stud and the connecting column are subjected to mortar pouring construction, the post-pouring belt is poured once, the reinforcing steel bars are not required to be grouted one by one, the process is simplified, the assembling speed is remarkably improved, and the efficiency is very high. The pouring belt after construction is poured by a conventional method, and is not constructed in a concealed mode, so that the inspection is convenient, the construction quality is good, and the quality is easy to guarantee. The shear-resistant property of the joint is obviously enhanced by arranging the shear-resistant steel bars in the shear-resistant pins of the steel pipe concrete structure. The post-cast strip adopts the ultra-high performance concrete, so that the length of the pier stud main reinforcement extending into the post-cast groove can be obviously reduced, the manufacturing difficulty is reduced, the engineering quantity is saved, the ultra-high performance concrete can realize self-leveling, self-compaction and vibration-free tamping, the construction is convenient and rapid, meanwhile, the material consumption of the post-cast strip is small, the cost is low, and the engineering popularization and application are facilitated.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a quick connect structure between prefabricated pier stud and base which characterized in that: the device comprises a prefabricated pier stud and a base, wherein a post-pouring groove is formed in the upper portion of the base, a connecting post is arranged in the post-pouring groove on the base, shear keys which are matched with each other are arranged on the side walls of the post-pouring groove and the connecting post, and a shear pin is arranged at the center of the top of the connecting post; the prefabricated pier column comprises a pier column body, pier column main ribs and a shear pin slot, wherein the pier column main ribs are pre-embedded in the pier column body, penetrate through the pier column body from top to bottom, and penetrate out of the bottom of the pier column body; a shear pin groove is formed in the bottom of the pier stud body opposite to the shear pin, and a mud jacking hole and a mud discharging hole are formed in the shear pin groove; the pier column body is connected with the connecting column through a splicing seam material, the main pier column rib extends into the post-pouring groove of the base, and a post-pouring belt is poured.
2. The structure of claim 1, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: the shear pin comprises a shear steel plate, shear steel bars are arranged in the shear steel plate, stirrups are arranged on the shear steel bars, the shear steel plate is used as a template, concrete of the shear pin is poured, and the concrete is poured to the top of the shear steel plate.
3. The structure of claim 1 or 2, wherein the prefabricated pier stud and the base are connected together in a quick manner, and the structure comprises: the pier column main reinforcement vertical horizontal direction is provided with stirrups which are arranged along the height direction of the pier column main reinforcement, and one or more anchor bars are welded at the end parts of the pier column main reinforcement.
4. The structure of claim 1, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: the inner side of each pier column main rib is 510cm larger than one side of the outer contour of the connecting column, and the extending length of each pier column main rib is 5cm smaller than that of the connecting column.
5. The structure of claim 3, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: and an oblique notch is arranged on the post-pouring groove and is larger than the pier stud body.
6. The structure of claim 1, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: one side of the grout pressing hole and one side of the grout outlet hole are connected with shear pins, and one side of the grout pressing hole and one side of the grout outlet hole extend out of the prefabricated pier stud.
7. The structure of claim 1, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: and the post-cast strip is filled in the post-cast groove and anchors the main ribs of the pier stud.
8. The structure of claim 1, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: the pier column body and the connecting column are connected through construction by a mortar sitting method.
9. The structure of claim 5, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: and grouting slurry after the gap between the shear pin and the shear pin groove is injected.
10. The structure of claim 3, wherein the prefabricated pier stud and the base are connected quickly, and the structure comprises: the shear key is a concave-convex concrete key, and an annular steel bar is arranged in the shear key.
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| CN202020059105.5U CN212103637U (en) | 2020-01-10 | 2020-01-10 | Quick connection structure between prefabricated pier stud and base |
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| CN202020059105.5U CN212103637U (en) | 2020-01-10 | 2020-01-10 | Quick connection structure between prefabricated pier stud and base |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123220A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Rapid connecting structure between prefabricated pier stud and base and construction method |
| CN113513178A (en) * | 2021-03-02 | 2021-10-19 | 江苏吴中建设集团有限公司 | Rack-shaped seam assembly type beam plate |
-
2020
- 2020-01-10 CN CN202020059105.5U patent/CN212103637U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113123220A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Rapid connecting structure between prefabricated pier stud and base and construction method |
| CN113513178A (en) * | 2021-03-02 | 2021-10-19 | 江苏吴中建设集团有限公司 | Rack-shaped seam assembly type beam plate |
| CN113513178B (en) * | 2021-03-02 | 2022-11-01 | 江苏吴中建设集团有限公司 | Rack-shaped seam assembly type beam plate |
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