CN113802891B - Long-connection seamless bridge construction integrated elevated station structure - Google Patents
Long-connection seamless bridge construction integrated elevated station structure Download PDFInfo
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- CN113802891B CN113802891B CN202111060630.4A CN202111060630A CN113802891B CN 113802891 B CN113802891 B CN 113802891B CN 202111060630 A CN202111060630 A CN 202111060630A CN 113802891 B CN113802891 B CN 113802891B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F1/00—Construction of station or like platforms or refuge islands or like islands in traffic areas, e.g. intersection or filling-station islands; Kerbs specially adapted for islands in traffic areas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
An elevated station structure for long-link seamless bridge construction is disclosed, which can reduce the number of times of hyperstatic structure, release internal force of temperature and contraction and creep, and greatly reduce the construction and maintenance cost of station engineering. Comprises a station upper structure, pier columns and bearing platforms which are arranged at intervals along the line direction. The pier column comprises a flexible connection pier column and a rigid connection pier column. The flexible connecting pier columns are arranged at two longitudinal end parts of the station upper structure, the upper ends and the lower ends of the flexible connecting pier columns are respectively flexibly connected with the station upper structure and the corresponding bearing platform through concrete hinges, longitudinal corners can be generated between the station upper structure and the bearing platform and the flexible connecting pier columns, longitudinal bending moment transmitted from the upper parts is released through the longitudinal corners, and only vertical component force is transmitted to the flexible connecting pier columns or the bearing platforms through the concrete hinges. The rigid connection pier columns are arranged between the flexible connection pier columns on the two sides, the upper ends and the lower ends of the rigid connection pier columns are respectively fixedly connected with the upper structure of the station and the corresponding bearing platform into a whole, and longitudinal force generated by the upper structure of the station is shared by the rigid connection pier columns.
Description
Technical Field
The invention relates to bridge engineering and structural engineering of urban rail transit, in particular to a concrete hinge suitable for a long-connection rigid elevated station structure, which can be used for the structural design of an elevated station for large bridge construction of urban rail transit and other similar buildings.
Background
In recent years, the rail transit construction business in China is rapidly developed, and a large number of overhead lines with novel design, complex technology and high construction difficulty are successively built. Among them, the elevated station structure has uniqueness and representativeness in rail transit. The 'building-bridge' integrated elevated station gradually becomes the preferred design of the elevated station due to the advantages of convenient design and construction, economy and applicability, good passenger experience and the like. However, the elevated vehicle with the integrated 'bridge-building' has the characteristics of complex structure and more hyperstatic times, and has the problem of great influence of temperature and shrinkage creep.
At present, the main method of solving from the structure angle has two main modes of setting expansion joint, increasing pier height as follows:
1. and an expansion joint is arranged. A gap with a certain length is reserved on a longitudinal long-link structure of a station, and an expansion joint device is embedded when a floor slab is poured, so that the length of a bridge link is shortened, and the influence of temperature and shrinkage creep is greatly reduced. This form is widely used in urban rail transit elevated station in recent years, but has the defect in two aspects, has destroyed the wholeness of station structure on the one hand, and on the other hand the expansion joint is easy ageing, has risks such as leaking, settlement, and the maintenance is all more difficult to the later stage change, can influence the station operation when serious.
2. The pier height is increased. The method reduces the longitudinal rigidity by increasing the height of the pier column of the station, increases the displacement of the top of the pier to release the structural stress, is used in a part of seamless stations, but has the defects that the method can lift the line, and the normal use is influenced by the overhigh pier column due to the long station, so that the quantity of various projects is synchronously increased, the investment of engineering equipment is increased, and the waste of the projects is caused.
In conclusion, the existing methods have certain limitations, and bring great inconvenience to construction and operation.
Disclosure of Invention
The invention aims to solve the technical problem of providing a long-connection seamless bridge construction integrated elevated station structure, which reduces the hyperstatic times of the structure, releases the internal force of temperature, shrinkage and creep times and simultaneously reduces the design, construction and maintenance difficulty by effective constructional measures on the premise of not arranging expansion joints and increasing the pier height, thereby greatly reducing the construction and maintenance cost of station engineering.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a long-connection seamless bridge construction integrated elevated station structure, which comprises a station upper structure, and pier columns and bearing platforms which are arranged at intervals along the line direction, wherein the upper end and the lower end of each pier column are respectively connected with the station upper structure and the corresponding bearing platform, and the long-connection seamless bridge construction integrated elevated station structure is characterized in that: the pier columns comprise flexible connecting pier columns and rigid connecting pier columns; the flexible connecting pier columns are arranged at two longitudinal end parts of the station upper structure, the upper ends and the lower ends of the flexible connecting pier columns are respectively flexibly connected with the station upper structure and the corresponding bearing platform through concrete hinges, longitudinal corners can be generated between the station upper structure and the bearing platform and the flexible connecting pier columns, longitudinal bending moment transmitted from the upper parts is released through the longitudinal corners, and only vertical component force is transmitted to the flexible connecting pier columns or the bearing platforms through the concrete hinges; rigid connection pier stud sets up between both sides flexible connection pier stud, and its upper end, lower extreme concretize as an organic wholely with station superstructure, corresponding cushion cap respectively, and the produced longitudinal force of station superstructure is shared through each rigid connection pier stud.
The semi-rigid transition pier stud is arranged between the adjacent flexible connection pier stud and the rigid connection pier stud, the upper end of the transition pier stud is flexibly connected with the upper structure of the station through a concrete hinge, and the lower end of the transition pier stud is fixedly connected with the corresponding bearing platform into a whole.
The beneficial effects of the invention are mainly reflected in the following aspects:
1. through setting up the simple concrete hinge that easily constructs, effectual upper portion station is because temperature and the produced secondary internal force release of gross concrete shrinkage creep to this reduces the station tip pier stud and the basis and receives the longitudinal bending moment, and the station longitudinal force mainly has middle pier stud to undertake, and all pier studs all use to undertake vertical force as the main. Therefore, the structure can meet the standard requirement under the conditions of other devices such as no extra expansion joint, increased line height and the like;
2. the elevated station releases the temperature and the concrete shrinkage force of the long-linked elevated station and effectively improves the internal force of the station structure. The concrete hinge is formed at one time without replacement, so that the work of replacing a support between a complicated station structural layer and an equipment layer is avoided, and the problems of maintenance and the like in the future can be better solved;
3. under the condition of meeting the structural strength and rigidity, the steel bar configuration can be optimized, and the engineering investment is saved; the problems of easy aging, difficult replacement and the like caused by additionally arranging the expansion joint are avoided, and the construction and later-period operation and maintenance are facilitated;
4. the structure is simple, the stress is reasonable, the force transmission is clear, and the compression resistance of the concrete material is fully exerted; the construction is convenient, economical and applicable, and easy to operate;
5. the adaptive type is stronger, and the adaptive type is suitable for long-coupling concrete bridge construction integrated station structures without seams in any forms and other buildings with long-coupling concrete structures without seams.
Drawings
The specification includes the following six figures:
FIG. 1 is a schematic longitudinal section structure diagram of an elevated station structure for constructing a long-link seamless bridge according to the invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is a schematic structural diagram of a concrete hinge in a long-link seamless bridge construction-in-one elevated station structure of the invention;
fig. 6 is a partial schematic view of a flexible connection pier column in a structure diagram of a long-connection seamless bridge construction integrated elevated station.
Components and corresponding labels are shown: the station comprises a station upper structure 10, a flexible connecting pier column 21, a rigid connecting pier column 22, a semi-rigid transition pier column 23, a bearing platform 30, a concrete hinge 40, concrete 41, an anchoring rod 42, a spiral rib 43 and filling materials 44.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1, the long-connection seamless bridge construction integrated elevated station structure comprises a station upper structure 10, and pier columns and bearing platforms 30 which are arranged at intervals along the line direction, wherein the upper end and the lower end of each pier column are respectively connected with the station upper structure 10 and the corresponding bearing platform 30, and each pier column comprises a flexible connection pier column 21, a rigid connection pier column 22 and a semi-rigid transition pier column 23. Referring to fig. 2, the flexible connection piers 21 are disposed at two longitudinal ends of the station superstructure 10, and upper and lower ends thereof are respectively flexibly connected to the station superstructure 10 and the corresponding bearing platform 30 through concrete hinges 40, so that longitudinal corners can be generated between the station superstructure 10 and the bearing platform 30 and the flexible connection piers 21, a longitudinal bending moment transmitted from the upper part is released through the longitudinal corners, and only a vertical component force is transmitted to the flexible connection piers 21 or the bearing platform 30 through the concrete hinges 40. Referring to fig. 1 and 4, the rigid connection pier 22 is disposed between the flexible connection piers 21 at two sides, the upper end and the lower end of the rigid connection pier are respectively fixedly connected with the station superstructure 10 and the corresponding bearing platform 30 into a whole, and the longitudinal force generated by the station superstructure 10 is shared by the rigid connection piers 22.
Referring to fig. 1, the invention effectively releases large amount of concrete in the upper structure 10 of the station by huge internal force generated by temperature and shrinkage creep through the arrangement of the simple and easy-to-construct concrete hinge 20, so as to reduce the longitudinal bending moment borne by the pier columns at the end parts of the station and the foundation, the longitudinal acting force of the station is mainly borne by the rigid connecting pier column 22 in the middle, all the pier columns mainly bear the vertical force, the structure is simple, the stress is reasonable, the force transmission is clear, the characteristics of the hinge structure for releasing the bending moment are fully exerted, and the defect that the existing long-link bridge is used for building a one-piece elevated station structure is effectively overcome. Therefore, under the condition that other devices such as expansion joints do not need to be additionally arranged and the line elevation is increased, the structure can meet the standard requirement. The elevated station releases the temperature and the concrete shrinkage force of the long-linked elevated station and effectively improves the internal force of the station structure. The concrete hinge 20 is formed in one step without replacement, the work of replacing a support between a complex station structural layer and an equipment layer is avoided, and the problems of maintenance and the like in the future can be better solved.
Referring to fig. 4, in order to optimize the stress and force transmission, a semi-rigid transition pier 23 may be further disposed between the adjacent flexible connection pier 21 and rigid connection pier 22, the upper end of the transition pier 23 is flexibly connected to the upper structure 10 of the station through a concrete hinge 40, and the lower end is fixedly connected to the corresponding platform 30. Referring to fig. 5, the concrete hinge 40 is formed of a concrete part 41, an anchor rod 42, and a spiral reinforcement 43, and the concrete part 41 is formed of concrete poured between a bottom surface of a concrete member above the concrete hinge and a top surface of the concrete member below the concrete hinge. The center of the anchoring rod 42 is located at the concrete part 41, and the upper part and the lower part of the anchoring rod respectively penetrate into the concrete member above the concrete hinge and the concrete member below the concrete hinge and form anchoring connection with the concrete member. When the concrete hinge 40 is disposed between the bottom surface of the station upper structure 10 and the top surface of the flexible coupling pier stud 21, the concrete member above the concrete hinge refers to the station upper structure 10, and the concrete member below the concrete hinge refers to the flexible coupling pier stud 21. When the concrete hinge 40 is disposed between the bottom surface of the flexible coupling pier 21 and the top surface of the bearing platform 30, the concrete member above the concrete hinge is referred to as the flexible coupling pier 21, and the concrete member below the concrete hinge is referred to as the bearing platform 30.
Referring to fig. 5, the anchoring rod 42 is centrally provided with a spiral rib 43 extending upward and downward into the concrete member above the concrete hinge and the concrete member below the concrete hinge by a certain length to reinforce the local bearing capacity of the concrete hinge 40. Referring to fig. 6, after the station is completely built, the gap between the bottom surface of the concrete member above the concrete hinge and the top surface of the concrete member below the concrete hinge is filled with a filling material 44.
The hinge structure has the advantages of simple structure, reasonable stress and definite force transmission, and fully exerts the characteristic of releasing bending moment of the hinge structure. The arrangement flexibility is strong, and the number and the positions of the hinges can be determined according to the needs. The durability is strong, adopts concrete hinge one shot forming to need not to change, has avoided carrying out the work that the support was changed between complicated station structural layer and equipment floor, and the adaptation type is stronger, and applicable in the long antithetical couplet concrete structure bridge construction unification station that arbitrary form did not establish the seam to and other long antithetical couplets do not establish seam concrete structure's building. The invention can simplify the design, save the construction cost, reduce the workload of maintenance and has considerable economic benefit.
The foregoing is illustrative of the principles of the present invention for constructing an elevated station structure for long link seamless bridges and is not intended to limit the invention to the exact construction and applications shown and described, and accordingly, all modifications and equivalents that may be resorted to are intended to fall within the scope of the invention.
Claims (3)
1. The utility model provides an elevated station structure is built to long no seam bridge that allies oneself with, includes pier stud, cushion cap (30) that station superstructure (10) and line direction interval set up along the line, the upper end of each pier stud, lower extreme are connected characterized by with station superstructure (10), corresponding cushion cap (30) respectively: the pier columns comprise flexible connecting pier columns (21) and rigid connecting pier columns (22); the flexible connecting pier columns (21) are arranged at two longitudinal end parts of the station upper structure (10), the upper ends and the lower ends of the flexible connecting pier columns are respectively flexibly connected with the station upper structure (10) and the corresponding bearing platform (30) through concrete hinges (40), longitudinal corners can be generated between the station upper structure (10) and the flexible connecting pier columns (21) and between the bearing platform (30) and the flexible connecting pier columns (21), longitudinal bending moments transmitted from the upper parts are released through the longitudinal corners, and only vertical component force is transmitted to the flexible connecting pier columns (21) or the bearing platform (30) through the concrete hinges (40); the rigid connecting pier columns (22) are arranged between the flexible connecting pier columns (21) on the two sides, the upper ends and the lower ends of the rigid connecting pier columns are fixedly connected with the station upper structure (10) and the corresponding bearing platform (30) into a whole respectively, and longitudinal force generated by the station upper structure (10) is shared by the rigid connecting pier columns (22);
the concrete hinge (40) is composed of a concrete part (41), an anchoring rod (42) and a spiral rib (43), and the concrete part (41) is formed by concrete poured between the bottom surface of a concrete member above the concrete hinge and the top surface of the concrete member below the concrete hinge; the center of the anchoring rod (42) is positioned at the concrete part (41), and the upper part and the lower part of the anchoring rod respectively penetrate into the concrete member above the concrete hinge and the concrete member below the concrete hinge and form anchoring connection with the concrete member;
and a spiral rib (43) which extends upwards and downwards into the concrete member above the concrete hinge and the concrete member below the concrete hinge for a certain length is arranged at the center of the anchoring rod (42).
2. The long-connection seamless bridge construction-integration elevated station structure as claimed in claim 1, which is characterized in that: set up transition pier stud (23) between adjacent flexible connection pier stud (21), rigid connection pier stud (22), the upper end of this transition pier stud (23) forms flexible connection through concrete hinge (40) and station superstructure (10), and the lower extreme then concreties as an organic whole with corresponding cushion cap (30).
3. The long-connection seamless bridge construction-integration elevated station structure as claimed in claim 1, which is characterized in that: and filling materials (44) are injected into a gap between the bottom surface of the concrete member above the concrete hinge and the top surface of the concrete member below the concrete hinge for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111060630.4A CN113802891B (en) | 2021-09-10 | 2021-09-10 | Long-connection seamless bridge construction integrated elevated station structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111060630.4A CN113802891B (en) | 2021-09-10 | 2021-09-10 | Long-connection seamless bridge construction integrated elevated station structure |
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| Publication Number | Publication Date |
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| CN113802891A CN113802891A (en) | 2021-12-17 |
| CN113802891B true CN113802891B (en) | 2023-04-07 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278404A (en) * | 2002-03-25 | 2003-10-02 | Kazuo Suzuki | Earthquake-proof structure |
| JP2004324153A (en) * | 2003-04-23 | 2004-11-18 | Shinko Wire Co Ltd | Reinforced structure of tendon anchorage part in pre-stressed concrete structure and fixed construction method |
| JP2006138196A (en) * | 2004-11-14 | 2006-06-01 | Tomoyasu Yoko | Pier structure of elevated and earthquake-resistant bridge |
| KR101386422B1 (en) * | 2013-09-17 | 2014-04-16 | 산이건설 주식회사 | Concrete slab expansion joints of the bridge structure extending |
| CN103643627A (en) * | 2013-12-20 | 2014-03-19 | 中铁二院工程集团有限责任公司 | Damping structure for continuous rigid frame pier with limited constraint |
| CN112112198B (en) * | 2020-10-23 | 2024-04-30 | 福州大学 | Rigid-flexible combined damper device and construction method thereof |
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