CN210657958U - Pier and bridge substructure - Google Patents
Pier and bridge substructure Download PDFInfo
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- CN210657958U CN210657958U CN201921068396.8U CN201921068396U CN210657958U CN 210657958 U CN210657958 U CN 210657958U CN 201921068396 U CN201921068396 U CN 201921068396U CN 210657958 U CN210657958 U CN 210657958U
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Abstract
The utility model relates to a pier, including pier stud and pier cap, the pier stud includes a plurality of concrete limb posts, and each concrete limb post is integral type limb post, connects through transverse connection system between each concrete limb post, and pier cap bearing is in each concrete limb top. Still relate to a bridge substructure in addition, including cushion cap and foretell pier, each concrete limb post all supports on the cushion cap. In the utility model, the pier is divided into a plurality of concrete limb columns, compared with the traditional pier, the volume is obviously reduced, the form is simple, the cost is lower, the transverse connection system ensures the transverse rigidity of the pier, and the adaptability to the rail transit bridge is better; the number of joints of the bridge pier is small, so that vulnerable parts and weak links of the bridge pier are reduced; the method avoids the entity effect of large area, obviously increases the space under the girder, reduces the visual sense of the pier, and can meet the landscape requirements of urban railway bridges and urban bridges.
Description
Technical Field
The utility model belongs to the technical field of the bridge, concretely relates to pier reaches bridge substructure including this pier.
Background
The railway bridge generally adopts a round-end solid pier, is designed according to a plain concrete structure, has larger pier size, adopts cast-in-place construction, needs a large amount of labor force in field operation, has low construction efficiency and long construction period, has larger influence on the existing road traffic and social influence surface, and is difficult to meet the requirements of the public society in civilized construction. In addition, a large number of scaffolds are required to be erected on a construction site, and important processes such as binding of reinforcing steel bars and pouring of concrete are completed through the scaffolds, which is also a challenge to construction safety.
At present, bridge engineering occupies higher and higher proportion in domestic highway and railway construction, bridge assembly construction becomes a development trend, but bridge prefabrication and assembly technologies are mostly used for bridge superstructure, and application in substructure starts late and develops slowly. The assembled concrete pier is that each component of the pier is assembled and connected into an integral structure after being prefabricated in sections, the size and the weight of the prefabricated sections are restricted by road transportation conditions, on-site hoisting capacity and the like, and in addition, the splicing parts of the prefabricated components are often superposed with the most unfavorable stress parts of the structure, so that the splicing seams become vulnerable parts and weak links of the assembled pier, and the requirements on factory prefabrication and on-site construction are higher.
In view of landscape, urban railways and the like are generally laid in urban roads or at roadside, the space is narrow, the requirement on bridge landscape is high, piers are used as important components of bridges, the piers are designed to be fine and attractive, the traditional concrete piers are clunky in texture and large in size, the traditional concrete piers become important units which influence the vision of pedestrians and vehicles, and the space under the bridge easily gives people a feeling of oppression and oppression, so that people cannot ignore the feeling.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a bridge pier reaches bridge substructure including this bridge pier can solve prior art's partial defect at least.
The embodiment of the utility model provides a pier, including pier stud and pier cap, the pier stud includes a plurality of concrete limb posts, each the concrete limb post is integral type limb post, each connect through transverse connection system between the concrete limb post, the pier cap bearing in each concrete limb post top.
As an example, each of the concrete limb columns is a prefabricated member.
As an embodiment, the transverse connection system is a steel structure, steel connection portions are embedded in positions corresponding to the concrete limb columns, and the transverse connection system is welded or bolted with each steel connection portion respectively;
or the transverse connecting system is of a concrete structure, steel bar joints are reserved at positions corresponding to the concrete limb columns, and the transverse connecting system is connected with the steel bar joints through cast-in-place wet joints or glue joints.
In one embodiment, each of the cross connecting members between any two of the concrete limb columns includes at least one of a straight type, a triangular type and an N type.
As one embodiment, each concrete limb column is a hollow reinforced concrete member.
As an example, the coping is a preform.
As one embodiment, a top dowel bar is reserved at the top of each concrete limb column, a plurality of pier cap steel bar insertion holes are formed in the bottoms of the pier caps, and the top dowel bars are inserted into the pier cap steel bar insertion holes in a one-to-one correspondence manner and connected through glue joints;
or top cast-in-place reinforcing steel bars are reserved at the tops of the concrete limb columns, a plurality of pier cap cast-in-place holes are formed in the bottoms of the pier caps, the number of the pier cap cast-in-place holes is the same as that of the concrete limb columns, the pier cap cast-in-place holes and the concrete limb columns are arranged in a one-to-one correspondence mode, and the top cast-in-place reinforcing steel bars are inserted into the corresponding pier cap cast-in-place holes respectively and are solidified through cast-.
As one embodiment, a plurality of cap legs are arranged at the bottom of the pier cap, and the number of the cap legs is the same as that of the concrete columns and the cap legs are connected with the concrete columns in a one-to-one correspondence manner.
The embodiment of the utility model provides a still relate to a bridge substructure, including the cushion cap, still include as above pier, each the concrete limb post all bear in on the cushion cap.
As one embodiment, a bottom dowel bar is reserved at the bottom of each concrete limb, a plurality of pile cap steel bar insertion holes are formed in the top of the pile cap, and the bottom dowel bars are inserted into the pile cap steel bar insertion holes in a one-to-one correspondence manner and connected through glue joints;
or bottom cast-in-place reinforcing steel bars are reserved at the bottoms of the concrete limb columns, a plurality of platform cast-in-place holes are formed in the tops of the platform, the quantity of the platform cast-in-place holes is the same as that of the concrete limb columns, the platform cast-in-place holes and the concrete limb columns are arranged in a one-to-one correspondence mode, and the bottom cast-in-place reinforcing steel bars are inserted into the corresponding platform cast-in-place holes respectively and are solidified through cast-in-place concrete.
The embodiment of the utility model provides a following beneficial effect has at least:
the pier provided by the utility model is decomposed into a plurality of concrete limb columns, compared with the traditional pier, the volume is obviously reduced, the form is simple, the cost is lower, the transverse connection system ensures the transverse rigidity of the pier, and the adaptability to the rail transit bridge is better; the integrated concrete limb column is adopted, so that the number of joints of the bridge pier is small, and vulnerable parts and weak links of the bridge pier are reduced; the method avoids the entity effect of large area, obviously increases the space under the girder, reduces the visual sense of the pier, and can meet the landscape requirements of urban railway bridges and urban bridges.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a bridge substructure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a cross-connecting system according to an embodiment of the present invention; wherein fig. 2a is a transverse connection system using a linear transverse connection member, fig. 2b is a transverse connection system using a triangular transverse connection member, and fig. 2c is a transverse connection system using an N-shaped transverse connection member;
fig. 3 and fig. 4 are schematic views of two connection structures of a pier and a bearing platform according to an embodiment of the present invention;
fig. 5 and fig. 6 are schematic views of two connection structures of a pier and a pier cap provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in fig. 1-6, the embodiment of the present invention provides a pier, including pier stud 3 and coping 2, pier stud 3 includes a plurality of concrete limb posts 31, each concrete limb post 31 is the integral type limb post, each connect through transverse connection system 32 between the concrete limb post 31, coping 2 is held in each concrete limb post 31 top.
In this embodiment, the pier 3 preferably comprises two concrete limbs 31, and in one embodiment, the two concrete limbs 31 are spaced apart along the transverse bridge and connected by the transverse connecting system 32. The cross section of the concrete limb column 31 can be square, round or polygonal according to the requirements of force and landscape.
Different from the structure of the prefabricated assembly of the existing pier stud 3 from bottom to top in sections, the concrete limb stud 31 is an integrated limb stud, so that the joint of the pier is less, and the easily damaged parts and weak links of the pier are reduced. It will be appreciated that the concrete limb columns 31 are preferably of the same height, with the top and bottom ends being level, allowing for a standardised design, with the concrete limb columns 31 being spaced apart in the horizontal plane.
According to the pier provided by the embodiment, the pier column 3 is decomposed into the plurality of concrete limb columns 31, compared with the traditional pier, the size is remarkably reduced, the form is simple, the manufacturing cost is low, the transverse connection system 32 ensures the transverse rigidity of the pier, and the adaptability to rail transit bridges is good; the method avoids the entity effect of large area, obviously increases the space under the girder, reduces the visual sense of the pier, and can meet the landscape requirements of urban railway bridges and urban bridges.
The concrete limb columns 31 can be constructed in a cast-in-place mode, but preferably, each concrete limb column 31 is a prefabricated member, so that standardized design, factory manufacturing and assembly construction can be realized, erection of scaffolds, binding of reinforcing steel bars, erection of templates and the like are not required to be carried out on site, the construction process of piers is simplified, the construction efficiency is effectively improved, the construction period is shortened, the construction safety is improved, and the influence on existing road traffic is small; the bridge pier has less joints, reduces vulnerable parts and weak links of the fabricated bridge pier, and ensures and improves the appearance and the internal quality.
In another embodiment, one concrete limb column 31 of the two concrete limb columns 31 is constructed in a cast-in-place mode, the other concrete limb column 31 is constructed in a prefabricated mode, and the two concrete limb columns are connected through a transverse connecting system 32, so that the structural stress capacity and the transverse structural rigidity of the pier are good.
The concrete limb column 31 is preferably of a hollow reinforced concrete structure, and on the premise of meeting the structural stress, the weight of the concrete limb column is reduced so as to facilitate transportation and hoisting, and the economical efficiency is high.
Further optimize the structure of the above pier, the above transverse connection system 32 may be a steel structure or a concrete structure, of course, it may also be other structural forms, and it is sufficient to ensure the transverse rigidity of the pier:
for the transverse connecting system 32 with a steel structure, correspondingly, steel connecting parts are pre-embedded at the corresponding positions of the concrete limb columns 31, and the transverse connecting system 32 is respectively welded or bolted with each steel connecting part;
for the transverse connection system 32 with a concrete structure, correspondingly, steel bar joints are reserved at corresponding positions of the concrete limb columns 31, and the transverse connection system 32 is connected with each steel bar joint through a cast-in-place wet joint or a glue joint.
The two connection modes can ensure reliable transverse connection between the two concrete limb columns 31, the two concrete limb columns are stressed cooperatively, and the overall transverse rigidity of the pier column 3 is increased.
It will be appreciated that for two concrete limb columns 31 connected by a transverse connecting system 32, the two concrete limb columns 31 are preferably connected by a plurality of transverse connecting members 321 arranged in series from top to bottom. As shown in fig. 2, each transverse connecting member 321 between any two connected concrete limb columns 31 includes at least one of a straight type, a triangle type and an N type, that is, the straight type transverse connecting member 321, the triangle type transverse connecting member 321, the N type transverse connecting member 321 or a combination of a plurality of structural forms. It can be seen that the transverse connection system 32 not only can improve the transverse structural rigidity of the pier, but also can improve the aesthetic appearance of the pier through the structural design thereof.
The structure of the pier is further optimized, and the coping 2 may be cast in place on the multi-concrete limb column 31 type pier column 3, but preferably, the coping 2 is a prefabricated member which is assembled and connected with the pier column 3, thereby further simplifying the construction process of the pier, further improving the construction efficiency, shortening the construction period, and improving the construction safety.
Wherein, the pier cap 2 can meet the landscape design requirements and adopts various forms such as vase shape, inverted T shape, rectangle and the like.
For the connection mode of the pier cap 2 and the pier stud 3, especially the connection mode between the precast concrete limb column 31 and the precast pier cap 2, the following connection modes can be adopted:
(1) as shown in fig. 5, a top dowel 311 is reserved at the top of each concrete limb column 31, a plurality of pier cap steel bar insertion holes 22 are formed at the bottom of the pier cap 2, and the top dowel 311 is inserted into each pier cap steel bar insertion hole 22 in a one-to-one correspondence manner and connected by a glue joint, so that the pier cap 2 and each concrete limb column 31 are connected to form a complete pier;
(2) as shown in fig. 6, a top cast-in-place steel bar 314 is reserved at the top of each concrete limb column 31, a plurality of pier cap cast-in-place holes 23 are formed in the bottom of the pier cap 2, the number of the pier cap cast-in-place holes 23 is the same as that of the concrete limb columns 31, the pier cap cast-in-place holes 23 and the concrete limb columns 31 are arranged in a one-to-one correspondence manner, and each top cast-in-place steel bar 314 is respectively inserted into the corresponding pier cap cast-in-place hole 23 and is.
In the above connection structure, each top dowel steel 311 or each top cast-in-place steel 314 preferably corresponds to a stressed main steel of the precast concrete limb column 31 one by one, and is preferably arranged in a ring shape, for example, in a circular ring shape, at the top of the precast concrete limb column 31, so as to ensure the stability and reliability of the connection structure.
Further preferably, as shown in fig. 1 and 5, a plurality of cap legs 21 are provided at the bottom of the coping 2, and the number of the cap legs 21 is the same as that of the concrete limb columns 31 and the cap legs are correspondingly connected with the concrete limb columns one by one. Based on the structure, on one hand, the weight of the pier cap 2 can be reduced, the lightweight design of the pier is further promoted, and the pier cap is matched with the shape design of the pier cap 2 and is more attractive; on the other hand, the cap legs 21 and the concrete limb columns 31 are connected into a whole, the force transmission path is clear, the integrated structure of the cap body of the pier cap 2 and the cap legs 21 can further improve the cooperative stress of the concrete limb columns 31, and the load is uniformly transmitted to the concrete limb columns 31 through the pier cap 2.
The two connection modes are simple in operation, simple in seam form and high in construction efficiency, and reliable connection between the concrete limb column 31 and the pier cap 2 can be guaranteed.
The pier provided by the embodiment has few prefabricated parts, only comprises the concrete limb columns 31 and the pier caps 2, has few integral joints, only comprises the connecting joints of the concrete limb columns 31 and the pier caps 2, obviously avoids the most unfavorable stress parts of the pier structure by the joints, and improves and reduces the vulnerable parts and weak links of the pier.
Example two
The embodiment of the utility model provides a bridge substructure, including cushion cap 4, still include the pier that above-mentioned embodiment provided, each concrete limb 31 all bear in on the cushion cap 4.
The bearing platform 4 is preferably a prefabricated member, so that the construction is further simplified, and the construction efficiency is improved.
Obviously, each concrete limb column 31 needs to be connected with the underlying platform 4, and for the connection of the platform 4 and each concrete limb column 31, especially the connection between the precast concrete limb column 31 and the precast platform 4, the following can be adopted:
(1) as shown in fig. 3, a bottom dowel bar 312 is reserved at the bottom of each concrete limb column 31, a plurality of platform steel bar insertion holes 41 are formed in the top of the platform 4, and the bottom dowel bars 312 are inserted into the platform steel bar insertion holes 41 in a one-to-one correspondence manner and connected by glue joints;
(2) as shown in fig. 4, bottom cast-in-place reinforcing steel bars 313 are reserved at the bottom of each concrete limb column 31, a plurality of platform cast-in-place holes 42 are formed in the top of the platform 4, the number of the platform cast-in-place holes 42 is the same as that of the concrete limb columns 31, the platform cast-in-place holes 42 and the concrete limb columns 31 are arranged in a one-to-one correspondence manner, and each bottom cast-in-place reinforcing steel bar 313 is respectively inserted into the corresponding platform cast-in-place hole 42 and is solidified through cast-.
Similarly, in the above connection structure, each bottom dowel bar 312 or each bottom cast-in-place steel bar 313 corresponds to a stressed main bar of the precast concrete limb column 31 one by one, and is preferably arranged in a ring shape at the bottom of the precast concrete limb column 31, for example, in a circular ring shape, so as to ensure the stability and reliability of the connection structure.
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 pier, includes pier stud and pier cap, its characterized in that: the pier column comprises a plurality of concrete limb columns, each concrete limb column is an integrated limb column, the concrete limb columns are connected through a transverse connecting system, and the pier cap is supported on the top of each concrete limb column.
2. The pier of claim 1, wherein: and each concrete limb column is a prefabricated part.
3. The pier of claim 2, wherein: the transverse connecting system is a steel structure, steel connecting parts are pre-embedded at positions corresponding to the concrete limb columns, and the transverse connecting system is respectively welded or bolted with the steel connecting parts;
or the transverse connecting system is of a concrete structure, steel bar joints are reserved at positions corresponding to the concrete limb columns, and the transverse connecting system is connected with the steel bar joints through cast-in-place wet joints or glue joints.
4. The pier of any one of claims 1 to 3, wherein: and each transverse connecting member between any two connected concrete limb columns comprises at least one of a straight line type, a triangle type and an N type.
5. The pier of claim 1 or 2, wherein: and each concrete limb column is a hollow reinforced concrete member.
6. The pier of claim 2, wherein: the pier cap is a prefabricated part.
7. The pier of claim 6, wherein: a top dowel bar is reserved at the top of each concrete limb column, a plurality of pier cap steel bar insertion holes are formed in the bottoms of the pier caps, and the top dowel bars are correspondingly inserted into the pier cap steel bar insertion holes one by one and connected through rubber joints;
or top cast-in-place reinforcing steel bars are reserved at the tops of the concrete limb columns, a plurality of pier cap cast-in-place holes are formed in the bottoms of the pier caps, the number of the pier cap cast-in-place holes is the same as that of the concrete limb columns, the pier cap cast-in-place holes and the concrete limb columns are arranged in a one-to-one correspondence mode, and the top cast-in-place reinforcing steel bars are inserted into the corresponding pier cap cast-in-place holes respectively and are solidified through cast-.
8. The pier of claim 6 or 7, wherein: the pier cap bottom is equipped with a plurality of cap legs, cap leg with concrete limb column quantity the same and the one-to-one connection.
9. The utility model provides a bridge substructure, includes cushion cap, its characterized in that: the bridge pier of any one of claims 1 to 8, further comprising each concrete limb column supported on the platform.
10. The bridge substructure of claim 9, wherein: bottom joint bars are reserved at the bottoms of the concrete limbs, a plurality of bearing platform steel bar insertion holes are formed in the tops of the bearing platforms, and the bottom joint bars are correspondingly inserted into the bearing platform steel bar insertion holes one by one and connected through glue joints;
or bottom cast-in-place reinforcing steel bars are reserved at the bottoms of the concrete limb columns, a plurality of platform cast-in-place holes are formed in the tops of the platform, the quantity of the platform cast-in-place holes is the same as that of the concrete limb columns, the platform cast-in-place holes and the concrete limb columns are arranged in a one-to-one correspondence mode, and the bottom cast-in-place reinforcing steel bars are inserted into the corresponding platform cast-in-place holes respectively and are solidified through cast-in-place concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921068396.8U CN210657958U (en) | 2019-07-10 | 2019-07-10 | Pier and bridge substructure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921068396.8U CN210657958U (en) | 2019-07-10 | 2019-07-10 | Pier and bridge substructure |
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| CN210657958U true CN210657958U (en) | 2020-06-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258310A (en) * | 2019-07-10 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | Bridge pier and bridge substructure |
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- 2019-07-10 CN CN201921068396.8U patent/CN210657958U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258310A (en) * | 2019-07-10 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | Bridge pier and bridge substructure |
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