CN218911501U

CN218911501U - Station bridge closes and builds structure based on single-column station

Info

Publication number: CN218911501U
Application number: CN202222769675.5U
Authority: CN
Inventors: 邓娟红; 李金光; 梁仕杰; 戴珏; 戴旺; 邱冰; 曾敏; 金城; 马小龙; 张江; 欧阳伟强; 李唐; 孙志; 刘奥林; 何洪; 文莎莎; 刘扬良; 张美意; 姜菲菲
Original assignee: Hunan Railway Survey And Design Co ltd; Hunan Provincial Communications Planning Survey and Design Institute Co Ltd
Current assignee: Hunan Railway Survey And Design Co ltd; Hunan Provincial Communications Planning Survey and Design Institute Co Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-04-25
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a station bridge co-building structure based on a single-column station, which comprises the single-column station arranged below a river and a bridge arranged above the single-column station, wherein the single-column station and the bridge are both obliquely crossed with the river, a plurality of cross beams are arranged at the top of the single-column station at intervals, a plurality of station upright posts and a plurality of station hidden posts are respectively arranged at the middle part and the side wall of the single-column station at intervals, the middle part of the cross beam is supported on the station upright posts, the two ends of the cross beam are supported on a pair of station hidden posts, and the bridge pier is arranged on the cross beam. According to the station bridge combined building structure based on the single-column station, the station hidden columns are additionally arranged in the side walls of the single-column station, and the cross beams are arranged by depending on the original station upright posts, so that bridge piers of a bridge are erected on the cross beams, the bridge stress can be transferred to a foundation, the bridge is connected with the single-column station reasonably, the force transfer is reasonable, and the structural design is reasonable.

Description

Station bridge closes and builds structure based on single-column station

Technical Field

The utility model belongs to the field of subway station and bridge construction, and particularly relates to a station and bridge combined construction structure.

Background

In soft soil areas and areas with more river distribution, subway stations are usually arranged to run down the river, and if the river position is spanned by a bridge, the station and the bridge are usually combined. The form of station bridge co-construction is mainly divided into three types, wherein the first type is that a single bridge pier is erected in the middle of a station and is dispersed to a station upright post through a bearing platform form (shown in (a) of fig. 1); the second type adopts the form of a gate pier, and the bridge is separated from the station (as shown in (b) of fig. 1); the third is to perform the treatment by setting up a box culvert above the station (as shown in fig. 1 (c)).

However, the situation of station, bridge and river skew often occurs under the influence of the lines, and for the situation of station, bridge and river skew, not only the reasonable building design but also the existing water passing area are required to be ensured. The first scheme adopts a double-column station, and for the condition of oblique crossing, a plurality of columns are added, which is not in line with the building design concept. The second scheme has larger gate pier span (especially in the case of wider bridge deck width), the larger pier column size can meet the requirement, and the difference between the pier column and the original bridge after the pier column is built is larger, and the urban attractiveness is affected; the third scheme is affected by the river water cross section, and the scheme can lead to the bridge water cross section not meeting the requirements.

In summary, for the situation of the station, the bridge and the river skew, no corresponding axle co-construction mode exists at present, so that a station-bridge co-construction structure for the situation of the station, the bridge and the river skew is necessary to be arranged, so that the structure meets the river cross section requirement, the bridge settlement requirement and the station stress deformation requirement, and meets the building design requirement.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings in the background art, and provides a station-bridge combined building structure based on a single-column station under the condition that a station, a bridge and a river are in skew, which meets the river water cross section requirement, the bridge settlement requirement and the station stress deformation requirement. In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the utility model provides a station bridge closes and builds structure based on single-column station, is including locating the single-column station of river below and locating the bridge of single-column station top, single-column station and bridge all with river bias, single-column station top interval is equipped with many crossbeams, the middle part and the side wall of single-column station interval are equipped with many station stands and many station dark posts respectively, the middle part support of crossbeam is located on the station stand, the both ends support of crossbeam is located a pair of on the station dark post, the pier of bridge is located on the crossbeam. The beam is mainly supported through three points and is respectively positioned at the middle part and two ends of the beam, and is respectively supported and fixed by a station upright post (the middle part of the beam) and a station hidden post (two ends of the beam).

In the above-mentioned station-bridge combined construction structure, preferably, the arrangement direction of the cross beams is kept consistent with the water flow direction of the river, and the arrangement direction of one row of bridge piers in the cross direction is also kept consistent with the water flow direction of the river. By adopting the arrangement mode, the requirements of river water passing area can be met to the greatest extent, and the influence of the construction station bridge on river water passing is reduced.

In the above station-bridge combined building structure, preferably, a row of bridge piers in a transverse direction is located at the station upright post and/or the station hidden post at the position of the cross beam. In a more preferred scheme, the transverse bridge is provided with 4 piers in a row, 2 piers are respectively positioned above the station dark posts on two sides, and the other two piers are positioned above the station upright posts and are arranged next to the station upright posts. The load born by the upper part of the bridge can be transferred to the cross beam from the bridge upper structure through the bridge pier by adopting the arrangement mode, then the load is transferred to the bearing platform and the bottom plate through the station hidden posts, the station upright posts and the side walls, and finally the load is transferred to the foundation, so that the structure has a good force transfer effect.

In the above station bridge co-building structure, preferably, the number of station hidden posts on each side wall of the single-post station is matched with the cross beam. The station hidden posts are arranged below each beam in a matched mode, so that the bridge stress is transmitted to the foundation below through the beams. In the utility model, the station hidden post can be obtained by locally thickening and reinforcing the side wall.

In the above station-bridge combined building structure, preferably, the bridge abutment of the bridge is also arranged on the beam, and the beam and the bridge abutment are connected by pre-buried reinforcing steel bars. The bridge abutment is also arranged on the cross beam, so that the stress above the bridge is guaranteed to be downwards transmitted to the foundation through the cross beam. The corresponding cross beams can be pre-embedded with reinforcing steel bars, and then the bridge abutment parts are connected and erected through the reinforcing steel bars.

In the above station-bridge combined building structure, preferably, a pile bearing structure is arranged below the single-column station, the pile bearing structure comprises a pile foundation and a bearing platform, and the bearing platform is arranged above the pile foundation. The pile bearing structure is used for supporting and bearing the single-column station and reducing the integral settlement of the single-column station and the bridge in the soft soil area. The bearing platform is additionally arranged at the bottom, so that the sedimentation problem of the single-column station and the bridge can be solved without thickening the bottom plate, and the manufacturing cost is saved.

In the above station-bridge combined building structure, preferably, the number of the bearing platforms is the same as that of the cross beams, and each bearing platform is correspondingly arranged below each cross beam and is used for supporting the station upright posts and the station dark posts of the cross beams. The arrangement mode is beneficial for the beam to transmit force to the foundation through the bearing platform.

In the above station-bridge combined construction structure, preferably, a row of pile foundations is arranged below each bearing platform. A row of pile foundations are arranged at the bottom of the bearing platform, and the purpose is to reduce the overall settlement of stations and bridges in soft soil areas.

In the above station-bridge combined building structure, preferably, the bottom of the single-column station may further be provided with a triaxial stirring pile reinforcing layer, and the bearing platform adopts a large bearing platform mode with a width of 2m and a thickness of 2m turned down. The bottom of the single-column station adopts a large bearing platform mode of 2m width and 2m thickness downwards, and the single-column station is arranged along a station hidden column and a station upright column, so as to uniformly stress and reduce uneven settlement. And the triaxial stirring piles are adopted below the station bottom plate to strengthen the foundation, so that the bearing capacity of the foundation is increased. Alternatively, the triaxial stirring pile is reinforced in the width of 1.5m on both sides of the downward turning beam, and the bottoms of the other foundation pits are reinforced by drawing strips, so that the triaxial stirring pile can be directly obtained by adopting the conventional technology.

In the station-bridge combined building structure, preferably, the beam is embedded with H-shaped steel in advance. The beam can adopt a high concrete beam, if the bridge load is large or the river surface is limited, the width of the beam is not too large, and the beam can adopt a reinforced concrete combined structure internally wrapped with H-shaped steel, so that the size of the beam is greatly reduced.

In the above station-bridge combined construction structure, preferably, the station upright post may be a C50 concrete square post, and if the bridge span is larger, a steel pipe concrete upright post may be selected. The station stand not only sets up in the crossbeam below, but also can set up many station stands in the single-column station middle part simultaneously selectively to increase the structural stability of single-column station.

As a general technical concept, the present utility model also provides a construction method of the above-mentioned station bridge co-construction structure based on a single-column station, comprising the steps of:

s1: constructing pile foundations and bearing platforms at the bottoms of the single-column stations, and then constructing a bottom plate, side walls, a top plate and station columns of the single-column stations on the bearing platforms, wherein station hidden columns are synchronously constructed during construction of the side walls;

s2: constructing a cross beam on the top plate of the single-column station, and enabling the middle part of the cross beam to be supported on the stand column of the station, wherein the two ends of the cross beam are supported on a pair of dark posts of the station;

s3: and constructing piers and/or bridge decks on the cross beams, performing waterproof treatment on the top plate of the single-column station, and constructing a bridge superstructure to finish construction.

In the construction method, specifically, when the pile foundation and the bearing platform at the bottom of the single-column station are constructed, aiming at the construction of the subway station with the soft soil foundation, the foundation pit excavation and pit bottom reinforcement treatment are required, such as triaxial stirring pile foundation reinforcement is adopted, so that the bearing capacity of the foundation is increased.

For the condition of station, bridge and river skew, when the station and bridge are needed to be built together, the stand column of the existing station is often difficult to be utilized by the double-column station, and the stand column is needed to be additionally arranged independently, so that the arrangement of a station building column net is not facilitated. The utility model adopts the single-column station to carry out station bridge combined construction, correspondingly optimizes the structure of the single-column station, adds the components such as the cross beam, the station hidden post, the bearing platform and the like, and transmits the stress of the bridge to the foundation below. In addition, the single-column workshop of the station-bridge combined construction structure is reliably connected with the bridge, the force transmission is reasonable, and the requirements of bridge settlement and station stress deformation are met.

Compared with the prior art, the utility model has the advantages that:

1. the station bridge combined building structure based on the single-column station is characterized in that a station hidden column is additionally arranged in a side wall of the single-column station, and a beam is arranged by depending on an original station column, so that a bridge pier of the bridge is erected on the beam, the bridge can be stressed and transferred into a foundation, the bridge is reasonably connected with the single-column station, the force transfer is reasonable, the structural design is reasonable, and the station bridge combined building structure based on the single-column station is a brand-new station bridge combined building structure under the condition of oblique crossing of the station bridge and a river, and has wide application prospect.

2. The construction method of the station bridge combined building structure based on the single-column station is simple and easy to implement, and compared with the traditional station bridge combined building structure, the construction method does not need to add new equipment, and the construction amount is not increased.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a station bridge building structure in the prior art.

Fig. 2 is a schematic cross-sectional structure view of the station bridge co-construction structure based on the single-column station of the present utility model.

Fig. 3 is a schematic vertical section structure of the station bridge co-construction structure based on the single-column station.

Fig. 4 is a floor plan view of a single-column station based on the station bridge co-construction structure of the single-column station of the present utility model.

Fig. 5 is a plan view of a roof of a single-column station based on a station bridge co-construction structure of the single-column station of the present utility model.

Fig. 6 is a schematic structural view of pre-buried H-steel in a cross beam of the station bridge co-construction structure based on a single-column station of the present utility model.

Legend description:

1. a triaxial stirring pile reinforcing layer; 2. a cross beam; 3. a single-column station; 4. station posts; 5. a station hidden post; 6. bearing platform; 7. pile foundation; 8. bridge piers; 9. a bridge abutment; 10. river borderlines; 11. and a waterproof layer.

Detailed Description

The present utility model will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the utility model, but the scope of the utility model is not limited to the specific embodiments shown.

Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present utility model.

Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present utility model are commercially available or may be prepared by existing methods.

Examples:

as shown in fig. 2-5, the station bridge combined construction structure based on the single-column station in this embodiment includes a single-column station 3 disposed below a river and a bridge disposed above the single-column station 3, in this embodiment, the single-column station 3 and the bridge are both inclined with the river (in this embodiment, the specific angle of the inclined angle may be determined according to design requirements, for example, 60 ° in this embodiment), a plurality of cross beams 2 are disposed at the top of the single-column station 3 at intervals, a plurality of station columns 4 and a plurality of station dark columns 5 are disposed at the middle and side walls of the single-column station 3 at intervals, the middle of the cross beam 2 is supported on the station columns 4, two ends of the cross beam 2 are supported on a pair of station dark columns 5, and bridge piers 8 of the bridge are disposed on the cross beam 2.

In this embodiment, the arrangement direction of the cross beam 2 is kept identical to the water flow direction of the river, and the arrangement direction of the row of bridge piers 8 in the cross bridge direction is also kept identical to the water flow direction of the river. As can be seen from fig. 5, the cross beam 2 and the row of bridge piers 8 in the cross bridge direction are parallel to the river sideline 10, which is beneficial to reducing the influence on the river water passing area after the bridge piers 8 are constructed.

In this embodiment, a row of bridge piers 8 in the transverse direction are located at the station upright 4 and/or the station dark 5 at the position of the transverse beam 2. In this embodiment, specifically, 4 bridge piers 8 are arranged in a row in the transverse direction, 2 bridge piers are respectively located at the station hidden

columns

5, and 2 bridge piers are located at the station upright columns 4 in close proximity to each other, i.e. located at the middle position of the single-column station 3 as much as possible, so that the stress of the bridge piers 8 is transferred downwards through the station hidden columns 5 and the station upright columns 4.

In this embodiment, the number of station dark posts 5 on each side wall of the single-post station 3 is matched with the cross beam 2.

As shown in fig. 3, in this embodiment, the bridge abutment 9 of the bridge is also disposed on the beam 2, and the beam 2 and the bridge abutment 9 are connected by pre-buried reinforcing bars. The bars may be first embedded in the cross beam 2 and then the abutment 9 is erected by the embedded bars.

In this embodiment, a pile bearing structure is arranged below the single-column station 3, and the pile bearing structure comprises a pile foundation 7 and a bearing platform 6, wherein the bearing platform 6 is arranged above the pile foundation 7. Specifically, in this embodiment, a row of pile foundations 7 are all provided below each bearing platform 6, the number of bearing platforms 6 is the same as that of the cross beams 2, and bearing platforms 6 are correspondingly provided below each cross beam 2, and the station upright posts 4 and the station hidden posts 5 for supporting the cross beams 2 are all arranged on the bearing platforms 6.

In this embodiment, alternatively, the bottom of the single-column station 3 may be selectively provided with the triaxial stirring pile reinforcing layer 1, and the platform 6 may be selectively provided with a large platform mode with a width of 2m and a thickness of 2m turned down, and the triaxial stirring pile reinforcing layer 1 and the platform 6 may be provided with conventional technologies and arrangement modes. Of course, in the case where the requirement for reinforcing the foundation is not obvious, the triaxial stirring pile reinforcing layer 1 may not be used in this embodiment.

As shown in fig. 6, in this embodiment, the beam 2 may have an H-shaped steel embedded therein. The beam 2 is suitable for the situation of larger bridge load, and if the bridge load is not large, H-shaped steel in the beam 2 can be removed.

The construction method of the station bridge combined construction structure based on the single-column station of the embodiment comprises the following steps:

s1: firstly, performing foundation pit excavation and pit bottom reinforcement treatment, constructing a pile foundation 7 and a bearing platform 6 at the bottom of a single-column station 3, and then constructing a bottom plate, a side wall, a top plate and a station upright post 4 of the single-column station 3 on the bearing platform 6, and synchronously constructing a station hidden post 5 during construction of the side wall;

s2: constructing a beam 2 on a top plate of a single-column station 3, and enabling the middle part of the beam 2 to be supported on a station upright 4, wherein two ends of the beam 2 are supported on a pair of station hidden posts 5;

s3: and constructing a bridge pier 8 and/or a bridge abutment 9 on the cross beam 2, performing waterproof treatment (constructing a waterproof layer 11) on the top plate of the single-column station 3, and then constructing a bridge superstructure to finish the construction.

The station bridge combined building structure based on the single-column station 3 in the embodiment is characterized in that a station hidden column 5 is additionally arranged in the side wall of the single-column station 3, and a cross beam 2 is arranged by relying on the original station upright column 4, so that a bridge pier 8 of a bridge is erected on the cross beam 2, the bridge stress can be transferred to a foundation, the bridge is connected with the single-column station 3 reasonably, the force transfer is reasonable, the structural design is reasonable, and the station bridge combined building structure is a brand-new station bridge combined building structure under the condition of oblique crossing of the station bridge and a river.

Claims

1. The utility model provides a station bridge closes and builds structure based on single-column station, its characterized in that, including locating single-column station (3) of river below and locating the bridge of single-column station (3) top, single-column station (3) and bridge all with river bias, single-column station (3) top interval is equipped with many crossbeams (2), the middle part and the side wall of single-column station (3) interval respectively are equipped with many station stands (4) and many station dark posts (5), the middle part support of crossbeam (2) is located on station stand (4), the both ends support of crossbeam (2) are located a pair of on station dark posts (5), pier (8) of bridge are located on crossbeam (2).

2. Station bridge construction according to claim 1, wherein the direction of arrangement of the cross beams (2) is kept in line with the direction of water flow of the river, and the direction of arrangement of the row of bridge piers (8) in the cross direction is also kept in line with the direction of water flow of the river.

3. Station bridge building structure according to claim 1, characterized in that a row of said piers (8) in the transverse direction is located at said station columns (4) and/or station dark columns (5) at the position of said cross beam (2).

4. Station bridge co-construction structure according to claim 1, characterized in that the number of station dark posts (5) arranged on each side wall of the single-post station (3) is matched with the cross beam (2).

5. Station bridge construction structure according to claim 1, characterized in that the bridge abutment (9) of the bridge is also provided on the cross beam (2), and the cross beam (2) and the bridge abutment (9) are connected by pre-buried bars.

6. Station bridge co-construction structure according to any one of claims 1-5, characterized in that a pile bearing structure is arranged below the single-column station (3), the pile bearing structure comprising a pile foundation (7) and a bearing platform (6), the bearing platform (6) being arranged above the pile foundation (7).

7. The station bridge building structure according to claim 6, wherein the number of the bearing platforms (6) is the same as that of the cross beams (2), the bearing platforms (6) are correspondingly arranged below each cross beam (2), and the station upright posts (4) and the station hidden posts (5) for supporting the cross beams (2) are arranged on the bearing platforms (6).

8. Station bridge construction according to claim 6, wherein a row of pile foundations (7) is provided under each of the platforms (6).

9. Station bridge building structure according to any one of claims 1-5, characterized in that the cross beam (2) is embedded with pre-arranged H-steel.