CN115162139A - Connecting structure of steel arch bridge arch foot steel-concrete combined section and construction method thereof - Google Patents
Connecting structure of steel arch bridge arch foot steel-concrete combined section and construction method thereof Download PDFInfo
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- CN115162139A CN115162139A CN202210867534.9A CN202210867534A CN115162139A CN 115162139 A CN115162139 A CN 115162139A CN 202210867534 A CN202210867534 A CN 202210867534A CN 115162139 A CN115162139 A CN 115162139A
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- steel
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- concrete
- pier
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 99
- 239000010959 steel Substances 0.000 title claims abstract description 99
- 239000004567 concrete Substances 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 17
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a connecting structure of an arch foot steel-concrete combined section of a steel arch bridge and a construction method thereof. The connecting structure comprises steel arch ribs, steel connecting sections and reinforced concrete piers; the steel connecting section consists of an embedded section which is positioned in the middle and poured in the reinforced concrete pier and an extending section which is positioned at two ends and extends out of the reinforced concrete pier; the overhanging section is connected with the steel arch ribs at two sides in a butt welding way. The bearing plate sets up in reinforced concrete pier surface, and is located between pre-buried section and the overhanging section, pre-buried section and overhanging section all with bearing plate welded connection. And the surface of the steel structure of the embedded section is provided with a shear connector which is connected with the bridge pier concrete. The invention gives full play to the material characteristics of steel and concrete, transmits and balances the bending moment at the arch springing through the steel structure of the connecting section, cancels the complex hinge structure arranged at the arch springing of the traditional steel arch bridge, avoids the construction difficulty caused by tensioning the short prestressed steel belts at the pier, reduces the construction difficulty at the arch springing of the steel arch bridge, shortens the construction period and reduces the construction cost.
Description
Technical Field
The invention belongs to the field of bridge engineering construction, and particularly relates to a connecting structure of an arch springing steel-concrete combined section of a steel arch bridge and a construction method thereof.
Background
The development history of the arch bridge is long, the arch bridge occupies an important position in modern highway and urban road and bridge engineering, and the arch ring of the arch bridge is mainly made of reinforced concrete, steel boxes, steel pipe concrete and the like. The steel box arch rib has the characteristics of light self weight, convenience for processing and manufacturing, field construction and the like, and is widely used in large-span arch bridges and multi-span arch bridges.
For a multi-span arch bridge, in order to resist unbalanced thrust and bending moment of arch springing caused by the self weight of each hole structure and the accumulation of super-long connection temperature force, the arch springing and a concrete pier are generally solidified to form a steel-concrete combined section. The steel-concrete combined section is mainly constructed by taking stress of the steel arch foot as a main part, and concrete is wrapped and filled in the arch foot section to form an integral structure to assist the stress of the steel arch foot, so that the load borne by the upper structure of the bridge is reasonably transferred to the concrete pier stud, and the unbalanced stress and cracks of the arch foot are effectively avoided.
In order to resist unbalanced thrust and bending moment at the joint of an arch springing and a pier, a traditional structure usually adopts prestressed steel bundles to anchor an arch springing steel structure, and the part of the structure is limited by the size of the pier, so that the structural defects of high construction difficulty, short anchoring bundles, obvious prestress loss and the like exist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a steel arch bridge arch springing steel-concrete combined section connecting structure and a construction method thereof, and the aims of simple structure and convenient construction are fulfilled.
The solution provided by the invention is as follows:
the invention provides a connection structure of a steel arch bridge arch springing steel-concrete combined section, which comprises steel arch ribs, steel connection sections and reinforced concrete piers; the steel connecting sections comprise embedded sections which are positioned in the middle and poured in the reinforced concrete bridge piers and extending sections which are positioned at two ends and extend out of the reinforced concrete bridge piers; the overhanging section is in butt welding connection with the steel arch ribs on two sides. The bending moment of the steel arch rib at the arch springing is transmitted and balanced through the steel connecting section, and the prestress is not required to be tensioned at the arch springing.
Further, the steel arch rib is in a steel box form, an I-steel form or a steel pipe form. The steel connecting section can be prefabricated in a factory or constructed by welding on site.
Furthermore, the embedded section and the extending section are both in a steel box girder form.
Further, the bearing plate is arranged on the surface of the reinforced concrete pier and located between the embedded section and the extended section, and the embedded section and the extended section are welded and connected with the bearing plate; or the embedded section and the extended section are directly connected in a butt welding mode.
Furthermore, a shear connector is arranged on the surface of the steel structure of the embedded section and is connected with bridge pier concrete; the shear connector is in the form of a welding nail, an apertured plate or a combination of the welding nail and the apertured plate.
On the other hand, the invention also provides a construction method of the connecting structure of the steel arch bridge arch springing steel-concrete combined section, which comprises the following steps:
step 1: processing a steel connecting section; synchronously binding reinforcing steel bars of the reinforced concrete pier;
step 2: accurately positioning and mounting the steel connecting section;
and step 3: pouring pier concrete;
and 4, step 4: and after the strength of the bridge pier concrete meets the requirement, hoisting the steel arch rib and aligning and welding the steel arch rib on the steel connecting section.
The invention provides a connecting structure of a steel arch bridge arch springing steel-concrete combined section and a construction method thereof, which have the beneficial effects that:
(1) The steel members can be prefabricated in factories, and are high in prefabrication precision and high in construction speed;
(2) The invention gives full play to the material characteristics of steel and concrete, the bending moment at the arch springing is transmitted and balanced through the steel structure of the connecting section, the complex hinge structure arranged at the arch springing of the traditional steel arch bridge is cancelled, the construction difficulty caused by tensioning the short prestressed steel band at the pier is avoided, the construction difficulty at the arch springing of the steel arch bridge is reduced, the connecting structure is convenient and quick to install, the concrete is directly poured after positioning and installation, the prestressed tension is not needed, the construction period is shortened, and the construction is convenient;
(3) The invention has simple structure, definite force transmission, safety and reliability and saves the manufacturing cost.
Drawings
Fig. 1 is a schematic view of the connection of the steel arch rib, the steel connection section and the reinforced concrete pier of the present invention.
Fig. 2 is an elevation view of the steel joint section of fig. 1.
Fig. 3 is a plan view of the steel coupling segment of fig. 1 (pier concrete is not shown).
Shown in the figure: the steel arch rib structure comprises steel arch ribs 1, steel connecting sections 2, reinforced concrete piers 3, overhanging sections 4, bearing plates 5, embedded sections 6 and shear connectors 7.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, so as to fully understand the purpose, characteristics and effects of the present invention. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention; the description is only for the purpose of illustrating preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way.
The connection structure of the steel-concrete combined section of the arch foot of the steel arch bridge adopted in the embodiment is shown in fig. 1-3 and comprises a steel arch rib 1, a steel connection section and a reinforced concrete pier 3. The steel connecting section 2 comprises an embedded section 6 which is arranged in the middle and poured in the reinforced concrete pier 3 and an extending section 4 which is arranged at two ends and extends out of the reinforced concrete pier 3. The overhanging section 4 is connected with the steel arch ribs 1 at two sides in a butt welding way.
The steel arch rib 1 of the present embodiment takes the form of a steel box. The embedded section 6 and the overhanging section 4 both adopt a steel box form. Referring to fig. 2 and 3, the bearing plate 5 is disposed on the surface of the reinforced concrete pier 3 and located between the embedded section 6 and the extended section 4, and both the embedded section 6 and the extended section 4 are welded to the bearing plate 5. The steel structure surface of the embedded section 6 is provided with a shear connector 7 connected with bridge pier concrete; the shear connector can be in the form of a welding nail, an apertured plate or a combination of the welding nail and the apertured plate, and the shear connector 7 in the embodiment is in the form of a combination of a welding nail and an apertured plate.
The construction method of the connecting structure comprises the following steps:
step 1: the steel connecting section is prefabricated in a factory or welded on site, and reinforcing steel bars of the reinforced concrete pier are synchronously bound;
step 2: accurately positioning and mounting the steel connecting section;
and step 3: pouring pier concrete;
and 4, step 4: and after the strength of the bridge pier concrete meets the requirement, hoisting the steel arch rib and aligning and welding the steel arch rib on the steel connecting section.
In the embodiment, only the structural characteristics and the construction method of the steel box arch rib are explained, and the structural characteristics and the construction method of the I-shaped arch rib or the concrete filled steel tube arch rib are the same.
The present invention has been described in further detail with reference to the specific preferred embodiments, and it is not to be construed that the embodiments of the present invention are limited to the description. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. The utility model provides a connection structure of steel arch bridge hunch foot steel-concrete combination section which characterized in that: comprises steel arch ribs (1), steel connecting sections (2) and reinforced concrete piers (3); the steel connecting sections (2) comprise embedded sections (6) which are positioned in the middle and poured in the reinforced concrete piers (3) and extending sections (4) which are positioned at two ends and extend out of the reinforced concrete piers (3); the overhanging sections (4) are connected with the steel arch ribs (1) on the two sides in a butt welding mode.
2. A connecting structure of a steel arch bridge arch springing steel and concrete combined section according to claim 1, wherein: the steel arch rib (1) is in a steel box form, an I-steel form or a steel pipe form.
3. A connecting structure of a steel arch bridge arch springing steel and concrete combined section according to claim 1, wherein: the embedded section (6) and the extending section (4) are both in a steel box girder form.
4. A connecting structure of a steel arch bridge arch springing steel and concrete combined section according to claim 1, wherein: the bearing plate (5) is arranged on the surface of the reinforced concrete pier (3) and is positioned between the embedded section (6) and the overhanging section (4), and the embedded section (6) and the overhanging section (4) are welded with the bearing plate (5); or the embedded section (6) and the extending section (4) are directly connected in a butt welding mode.
5. A connecting structure of a steel arch bridge arch springing steel and concrete combined section according to claim 1, wherein: and a shear connector (7) is arranged on the surface of the steel structure of the embedded section (6) and is connected with the bridge pier concrete.
6. A connecting structure of a steel arch bridge arch springing steel and concrete combined section according to claim 5, wherein: the shear connector (7) is in the form of a welding nail, a perforated plate or a combination of the welding nail and the perforated plate.
7. A construction method of a connection structure of a steel arch bridge arch springing steel-concrete composite section according to any one of claims 1 to 6, characterized by comprising the steps of:
step 1: processing a steel connecting section; synchronously binding reinforcing steel bars of the reinforced concrete pier;
and 2, step: accurately positioning and mounting the steel connecting section;
and step 3: pouring pier concrete;
and 4, step 4: and after the strength of the bridge pier concrete meets the requirement, hoisting the steel arch rib and aligning and welding the steel arch rib on the steel connecting section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867534.9A CN115162139A (en) | 2022-07-21 | 2022-07-21 | Connecting structure of steel arch bridge arch foot steel-concrete combined section and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867534.9A CN115162139A (en) | 2022-07-21 | 2022-07-21 | Connecting structure of steel arch bridge arch foot steel-concrete combined section and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115162139A true CN115162139A (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210867534.9A Pending CN115162139A (en) | 2022-07-21 | 2022-07-21 | Connecting structure of steel arch bridge arch foot steel-concrete combined section and construction method thereof |
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| Country | Link |
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| CN (1) | CN115162139A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017200671A1 (en) * | 2017-01-17 | 2018-07-19 | Thyssenkrupp Ag | Pillar with load-branching knot and adjustable outlet angle |
| CN108660903A (en) * | 2018-06-20 | 2018-10-16 | 安徽省交通建设股份有限公司 | CFST Arch Bridge and construction method |
| CN114250690A (en) * | 2022-01-25 | 2022-03-29 | 山东省交通规划设计院集团有限公司 | Steel-concrete combined arch support suitable for concrete-filled steel tube arch bridge |
| CN216765541U (en) * | 2021-11-01 | 2022-06-17 | 广东省交通规划设计研究院集团股份有限公司 | Half-through arch bridge structure |
-
2022
- 2022-07-21 CN CN202210867534.9A patent/CN115162139A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017200671A1 (en) * | 2017-01-17 | 2018-07-19 | Thyssenkrupp Ag | Pillar with load-branching knot and adjustable outlet angle |
| CN108660903A (en) * | 2018-06-20 | 2018-10-16 | 安徽省交通建设股份有限公司 | CFST Arch Bridge and construction method |
| CN216765541U (en) * | 2021-11-01 | 2022-06-17 | 广东省交通规划设计研究院集团股份有限公司 | Half-through arch bridge structure |
| CN114250690A (en) * | 2022-01-25 | 2022-03-29 | 山东省交通规划设计院集团有限公司 | Steel-concrete combined arch support suitable for concrete-filled steel tube arch bridge |
Non-Patent Citations (1)
| Title |
|---|
| 宁洪伟;: "洛阳瀛洲大桥主桥上部结构施工方法", 公路工程, no. 04, 20 August 2010 (2010-08-20), pages 116 - 120 * |
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