CN214939215U - Large cantilever assembly type light steel-concrete combined cover beam based on slot type connection - Google Patents
Large cantilever assembly type light steel-concrete combined cover beam based on slot type connection Download PDFInfo
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- CN214939215U CN214939215U CN202121072880.5U CN202121072880U CN214939215U CN 214939215 U CN214939215 U CN 214939215U CN 202121072880 U CN202121072880 U CN 202121072880U CN 214939215 U CN214939215 U CN 214939215U
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Abstract
The utility model discloses a light-duty reinforced concrete combination bent cap of big cantilever assembled based on slot-in type is connected, it includes the roof beam body and shear connector, the lower extreme of the roof beam body is opened there is the pier stud spread groove, the tank bottom of pier stud spread groove is opened there is the hole of pouring, be equipped with the stiffening plate in the pier stud spread groove, stiffening plate and roof beam body fixed connection, the bottom of the roof beam body still is equipped with the plate body, and shear connector locates in the plate body, and with roof beam body fixed connection. Compared with the prior art, the characteristics of good tensile and shearing resistance of a steel structure and good compression performance of a concrete structure are fully exerted, the beam body and the plate body are connected into a whole by utilizing the shearing-resistant connecting piece, the requirement of transportation and hoisting on the weight of the structure in construction can be effectively met by fabricated installation, the pouring speed is high, the effect is good by adopting a mode of casting micro-expansion self-leveling concrete in a pier stud connecting groove, and compared with a conventional fabricated bent cap, the weight is lighter; the stiffening plates and the pre-buried grid type steel bars of the concrete pier stud are arranged in a staggered mode to form a good limiting structure.
Description
Technical Field
The utility model belongs to the technical field of the bridge preparation technique and specifically relates to a light-duty reinforced concrete combination bent cap of big cantilever assembled based on slot-in type is connected is related to.
Background
The large cantilever bent cap commonly used for the current municipal bridge mainly comprises a prestressed concrete bent cap and a steel bent cap, and has the following defects: firstly, for the cast-in-place construction of the large cantilever prestressed concrete bent cap, a support needs to be erected firstly, then concrete needs to be poured, the construction period is long, the construction efficiency is low, the influence on traffic under a bridge is large, traffic jam points are increased, and dust and noise pollution is large; secondly, for the prefabricated assembled large cantilever bent cap, if integral prefabrication is adopted, the common concrete large cantilever bent cap component has large size and large hoisting weight and has high requirement on hoisting equipment, large engineering machines and tools must be configured for field construction, the construction cost is high, the construction difficulty is high, meanwhile, the overload requirement on a road is also high, if block prefabrication is adopted, the requirement on the precision of field hoisting is high, a weak link of a segment joint exists, leakage diseases are easy to occur, and prestressed tendons need to be tensioned in batches; the steel cover beam has light structure dead weight, is convenient to hoist and connect on site, but has the problems of difficult guarantee of on-site welding quality, high structural cost and higher later maintenance and coating cost; the patent document with the publication number of CN111705629A discloses an integrally prefabricated assembled composite bent cap and a construction method thereof, wherein the integrally prefabricated assembled composite bent cap comprises a plate body, a beam body, a bent cap bridge pier connecting section, a shear key and a grouting sleeve; the construction method comprises the following steps: completing the manufacture of the beam body, and welding a shear key on the beam body; step two: arranging a grouting sleeve and installing the beam body in place, and pouring a plate body and a bent cap bridge pier connecting section; step three: transporting the plate body, the beam body, the bent cap bridge pier connecting section, the shear key and the grouting sleeve to a construction site, and completing site hoisting in place; and (5) grouting the grouting material in the grouting sleeve to complete the field assembly. Because the sleeve grouting connection is adopted, the anti-seismic performance is relatively weak, and the grouting compactness is always difficult to guarantee according to the current engineering case.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Based on this, the utility model provides a big cantilever assembled light-duty steel-concrete combination bent cap based on slot-in connection, full play steel construction tensile shear resistance is good, the characteristics that concrete structure compression performance is good, utilize shear connector to connect into a whole with the plate body the roof beam body, the assembled installation can effectively satisfy the requirement of transportation hoist and mount to structural weight in the construction, adopt the mode of cast-in-place micro-expansion self-leveling concrete in pier stud spread groove, pouring speed is fast and effectual, relative to conventional assembled bent cap, its weight is lighter; the stiffening plates are arranged in the pier stud connecting grooves and staggered with the embedded grid type steel bars of the concrete pier studs to form a good limiting structure, and the overall structure is good in anti-seismic performance.
(II) technical scheme
The utility model discloses an overcome above-mentioned problem or solve above-mentioned problem partially at least, provide a light-duty reinforced concrete combination bent cap of big cantilever assembled based on slot type is connected, including the roof beam body and shear connector, the lower extreme of the roof beam body is opened there is the pier stud spread groove, the tank bottom of pier stud spread groove is opened there is the hole of pouring, be equipped with the stiffening plate in the pier stud spread groove, stiffening plate and roof beam body fixed connection, the bottom of the roof beam body still is equipped with the plate body, shear connector locates in the plate body, and with roof beam body fixed connection.
Preferably, the stiffening plate is arranged at the notch of the pier stud connecting groove.
Preferably, the number of the stiffening plates is multiple, and the plurality of stiffening plates are arranged at intervals.
Preferably, the beam body includes: roof, web, bottom plate and shrouding, the top of the roof beam body is located to the roof, the bottom of the roof beam body is located to the bottom plate, the web is located between roof and the bottom plate, the shrouding is the cell wall of pier stud spread groove, be equipped with the plate body between bottom plate and the shrouding, the stiffening plate is located between the shrouding.
Preferably, the number of the bottom plates and the number of the web plates are multiple, and the bottom plates and the web plates are arranged in a one-to-one correspondence mode.
Preferably, the bottom plate is provided with a plurality of shear connectors, and the shrouding is provided with a plurality of shear connectors.
Preferably, the top plate, the web plate, the bottom plate and the sealing plate are all made of steel.
Preferably, the device also comprises a cover plate matched with the pouring hole, and the cover plate and the top plate are welded.
Preferably, the plate body is made of concrete.
(III) advantageous effects
The utility model discloses a light-duty reinforced concrete combination bent cap of big cantilever assembled based on slot-in connection has following advantage:
1) the steel-concrete composite structure is adopted, and compared with the conventional fabricated bent cap, the weight of the fabricated bent cap is lighter; the requirements on transportation, hoisting and temporary stability of construction are greatly reduced, the assembly construction of the light steel-concrete combined capping beam is realized, and the field construction time is obviously shortened.
2) The upper flange of the light steel-concrete combined bent cap is pulled without a prestressed tendon; the web plate of the beam body resists shear, and the shear strength of the web plate is more than 100 times that of the concrete; the economical efficiency of the prefabricated and assembled roof beam is equivalent to that of the same type of conventional roof beam in terms of comprehensive cost of prefabricated and assembled construction.
3) The top of the beam body at the position of the concrete pier column is pulled, and the top is provided with a communicated steel plate; the bottom of the beam body at the position of the concrete pier column is pressed, and a sealing plate and a stiffening plate are also communicated; the reserved steel bars of the concrete pier column meet the anchoring length, and are arranged in a staggered manner with the sealing plates and the stiffening plates, so that the anchoring performance of the concrete pier column can be fully guaranteed; to sum up, the utility model discloses each department of steel construction is the intercommunication, and the material atress is clear and definite, the wholeness is good, construction quality is secure, and the static and dynamic performance matches with conventional cast-in-place pier stud bent cap, also does not have the use restriction in the high earthquake district.
4) The utility model discloses conveniently realize standardized building, its major structure (including pier stud connecting groove degree of depth, steel sheet size and shear connector arrange etc.) can also carry out the pertinence optimization according to the actual project condition, has good and extensive adaptability, has realized society, economy, environment comprehensive benefits maximize in bridge assembly construction.
Drawings
The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:
fig. 1 is a schematic structural view of the present invention installed on a concrete pier stud;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 1;
fig. 5 is an exploded view of fig. 1.
Description of reference numerals:
1. the concrete pier comprises a beam body, a top plate, a web plate, a bottom plate, a sealing plate, a shear connector, pier connecting grooves, pouring holes, stiffening plates, a plate body and concrete piers, wherein the beam body comprises 11 parts of a top plate, 12 parts of a web plate, 13 parts of a bottom plate, 14 parts of a sealing plate, 2 parts of a shear connector, 3 parts of pier connecting grooves, 31 parts of pouring holes, 4 parts of stiffening plates, 5 parts of a plate body and 6 parts of concrete piers.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-5, the embodiment provides a large cantilever assembly type light steel-concrete combined capping beam based on slot-in connection, which includes a beam body 1 and a shear connector 2, wherein a pier stud connecting groove 3 is formed at the lower end of the beam body 1, the pier stud connecting groove 3 is sleeved on a concrete pier stud 6, and the concrete pier stud 6 can be a prefabricated member or can be made in a cast-in-place manner. The reinforcing bar is reserved on concrete pier stud 6, form pre-buried grid formula steel bar structure, when concrete pier stud 6 inserts pier stud spread groove 3, the length of reserving the reinforcing bar on it is roughly equal with the groove depth of pier stud spread groove 3, the preferred arrangement form that adopts "big reinforcing bar + great interval" of reinforcing bar is so that later stage roof beam body 1 location and installation, the tank bottom of pier stud spread groove 3 is opened has pouring hole 31, during on-the-spot hoist and mount, it can double as the hole of hoist to pour hole 31, be equipped with stiffening plate 4 in the pier stud spread groove 3, stiffening plate 4 and 1 fixed connection of roof beam body, the bottom of roof beam body 1 still is equipped with plate body 5, the material of plate body 5 is the concrete, roof beam body 1 includes: the top plate 11, the web plate 12, the bottom plate 13 and the closing plate 14 are all made of steel materials. The shear connectors 2 are arranged in the plate body 5, and the shear connectors 2 are respectively welded with the closing plate 14 and the bottom plate 13. When the light steel-concrete combined capping beam is manufactured, the top plate 11, the web plate 12, the bottom plate 13, the sealing plate 14 and the stiffening plate 4 are manufactured into the beam body 1 in a welding mode, and as the length of the beam body 1 is usually not more than 25m and the width is not more than 2.5m, the conventional urban road transportation conditions can be met, the beam body 1 can be transported to the site to realize the assembly installation after the whole processing and manufacturing of a beam factory is completed. The beam body 1 is inverted after being manufactured, and is connected with the plate body 5 through the shear connector 2 to form a steel-concrete combined structure. The plate body 5 and the beam body 1 are connected in two ways, namely, the first way: the plate body 5 adopts common concrete to reserve the notch and is connected with the post-cast slot mouth of the beam body 1 after 6 months of stock, the second kind: non-shrinkage concrete is adopted for cast-in-place so as to realize connection with the beam body 1.
Referring to fig. 3, the stiffening plate 4 is disposed at the notch of the pier stud connection groove 3. The stiffening plates 4 are multiple, and the stiffening plates 4 are arranged at intervals so as to form a limiting structure with the embedded grid type steel bars of the concrete pier stud 6 in a staggered mode, and the light steel-concrete combined cover beam does not need or only needs little horizontal restraint to be guaranteed not to fall off, so that the safety factor during construction is improved.
The beam body 1 includes: roof 11, web 12, bottom plate 13 and shrouding 14, roof 11 locates the top of the roof beam body 1, and the bottom of the roof beam body 1 is located to bottom plate 13, and between roof 11 and the bottom plate 13 was located to web 12, and shrouding 14 is the cell wall of pier stud spread groove 3, is equipped with plate body 5 between bottom plate 13 and the shrouding 14, and stiffening plate 4 is located between shrouding 14. Setting the shearing strength of the web 12 which is more than 100 times of that of the concrete; from the comprehensive cost point of view of prefabrication and assembly construction, the economical efficiency of the beam is equivalent to that of the same type of conventional beam body 1.
Referring to fig. 2, the base plates 13 and the webs 12 are provided in plurality, and the base plates 13 and the webs 12 are provided in one-to-one correspondence.
Referring to fig. 2, the bottom plate 13 is provided with a plurality of shear connectors 2, and the closing plate 14 is provided with a plurality of shear connectors 2.
The embodiment further comprises a cover plate matched with the pouring hole 31, and the cover plate and the top plate 11 are welded. After the light steel-concrete combined capping beam and the concrete pier stud 6 are solidified by pouring the micro-expansive self-leveling concrete in situ from the pouring hole 31, the cover plate is welded in the pouring hole 31 to fill the top plate 11.
The utility model discloses in, plate body 5 is connected into a whole through shear connector 2 and roof beam body 1, can adopt cast-in-place mode preparation, also can adopt ordinary concrete to reserve the notch and stock 6 months after again with the roof beam body 1 after the groove mouth is watered and be connected, two kinds of modes adaptability is good, adorn light-duty steel-concrete combination bent cap behind concrete pier stud 6, from pouring the solidification that the 31 cast-in-place slight expansion self-leveling concrete in hole realized light-duty steel-concrete combination bent cap and concrete pier stud 6, the prefabricated construction of light-duty steel-concrete combination bent cap has been realized to this mode of preparation, show and shorten the site operation time. The method of casting the micro-expansion self-leveling concrete in the pier stud connecting groove 3 is adopted, the casting speed is high, the casting effect is good, and compared with the conventional fabricated bent cap, the cast-in-place self-leveling concrete is lighter in weight; the requirements of transportation and hoisting are reduced. The embedded grid type steel bars of the stiffening plates 4 and the concrete pier studs 6 are arranged in a staggered mode to form a good limiting structure, few temporary stabilizing measures are not needed or needed during construction, and construction difficulty is reduced.
Finally, the method of the present application is only a preferred embodiment and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (9)
1. The utility model provides a light-duty reinforced concrete combination bent cap of big cantilever assembled based on slot-in type is connected which characterized in that, includes the roof beam body and shear connector, the lower extreme of the roof beam body is opened there is the pier stud spread groove, the tank bottom of pier stud spread groove is opened there is the hole of pouring, be equipped with the stiffening plate in the pier stud spread groove, stiffening plate and roof beam body fixed connection, the bottom of the roof beam body still is equipped with the plate body, shear connector locates in the plate body, and with roof beam body fixed connection.
2. The large cantilever assembly type light steel-concrete combined capping beam based on slot-in connection according to claim 1, wherein the stiffening plate is arranged at the notch of the pier stud connecting groove.
3. The large cantilever assembly type light steel-concrete combined cover beam based on slot-in connection according to claim 2, wherein the number of the stiffening plates is multiple, and the plurality of the stiffening plates are arranged at intervals.
4. The large cantilever fabricated light steel-concrete composite bent cap based on slot-in connection according to claim 3, wherein the beam body comprises: roof, web, bottom plate and shrouding, the top of the roof beam body is located to the roof, the bottom of the roof beam body is located to the bottom plate, the web is located between roof and the bottom plate, the shrouding is the cell wall of pier stud spread groove, be equipped with the plate body between bottom plate and the shrouding, the stiffening plate is located between the shrouding.
5. The large cantilever assembly type light steel-concrete combined cover beam based on slot-in connection according to claim 4, wherein the number of the bottom plates and the number of the webs are multiple, and the bottom plates and the webs are arranged in a one-to-one correspondence manner.
6. The large cantilever assembly type light steel-concrete combined capping beam based on slot-in connection as claimed in claim 5, wherein the bottom plate is provided with a plurality of shear connectors and the sealing plate is provided with a plurality of shear connectors.
7. The large cantilever fabricated light steel-concrete composite capping beam based on slot-in connection according to claim 4, wherein the top plate, the web plate, the bottom plate and the sealing plate are all made of steel.
8. The large cantilever assembly type light steel-concrete combined capping beam based on slot-in connection according to any one of claims 4 to 7, further comprising a cover plate matched with the pouring hole, wherein the cover plate and the top plate are welded.
9. The large cantilever assembly type light steel-concrete combined capping beam based on slot-in connection according to claim 1, wherein the plate body is made of concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121072880.5U CN214939215U (en) | 2021-05-19 | 2021-05-19 | Large cantilever assembly type light steel-concrete combined cover beam based on slot type connection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121072880.5U CN214939215U (en) | 2021-05-19 | 2021-05-19 | Large cantilever assembly type light steel-concrete combined cover beam based on slot type connection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875780A (en) * | 2022-05-31 | 2022-08-09 | 中铁二院工程集团有限责任公司 | Steel cover beam door type pier structure |
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2021
- 2021-05-19 CN CN202121072880.5U patent/CN214939215U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875780A (en) * | 2022-05-31 | 2022-08-09 | 中铁二院工程集团有限责任公司 | Steel cover beam door type pier structure |
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