CN109629419B - Post-bonded steel-concrete bonded beam and bridge with high-efficiency prestressing force application and construction method - Google Patents
Post-bonded steel-concrete bonded beam and bridge with high-efficiency prestressing force application and construction method Download PDFInfo
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- CN109629419B CN109629419B CN201910108477.4A CN201910108477A CN109629419B CN 109629419 B CN109629419 B CN 109629419B CN 201910108477 A CN201910108477 A CN 201910108477A CN 109629419 B CN109629419 B CN 109629419B
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- precast concrete
- construction method
- wet
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- 239000004567 concrete Substances 0.000 title claims abstract description 49
- 238000010276 construction Methods 0.000 title claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 239000011178 precast concrete Substances 0.000 claims abstract description 36
- 239000003292 glue Substances 0.000 claims abstract description 33
- 210000002435 tendon Anatomy 0.000 claims abstract description 20
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920006335 epoxy glue Polymers 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling 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
-
- 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
- E01D2101/30—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 post-bonding steel-hybrid bonding beam capable of efficiently applying prestress, which is characterized in that: comprises a concrete slab, a steel beam and a shear pin; the concrete slab comprises a precast concrete slab, prestressed tendons, longitudinal wet joints and transverse glue joints; the inside of the precast concrete slab is longitudinally provided with a plurality of prestress ribs, the steel beam is arranged below the longitudinal wet joint, and a plurality of shear nails are fixed in the longitudinal wet joint and above the steel beam; the precast concrete plates are connected through the transverse glue joints in a gluing way; tensioning the prestressed tendons after the cementing is finished; and after tensioning is finished, pouring the longitudinal wet joints on two lateral sides of the precast concrete board for wet connection. The invention solves the problem that the prestress of the concrete bridge deck is transmitted to the steel beam by the shear nails, does not need to increase the size and the dosage of the prestress ribs, the steel beam and the like, and saves the engineering quantity.
Description
Technical Field
The invention belongs to the field of engineering construction, in particular to a post-bonded steel-concrete bonded beam capable of efficiently applying prestress, a bridge with the post-bonded steel-concrete bonded beam capable of efficiently applying prestress as a bridge deck and a related construction method, which are used for improving the effective prestress of a concrete slab in a hogging moment area of the bonded beam.
Background
In the engineering construction field, compared with a concrete beam, the steel-concrete combined beam has light dead weight and strong adaptability; especially in the bridge field, compared with steel beams, the steel beam has the advantages of high rigidity, good bridge deck durability, low operation and maintenance cost and high economy; the concrete slab has the functions of combining the beam flange and the bridge deck in the combined beam, and is beneficial to improving the buckling bearing capacity of the steel beam. And moreover, the concrete slab can be cast in situ on the erected steel beam, can be prefabricated and then hoisted, and is flexible and convenient to construct. Therefore, the bond beam is increasingly used in engineering.
In order to compress the full cross section of the concrete slab of the bond beam, it is generally necessary to tension tendons within the concrete slab. In the traditional steel-concrete combined beam, shear nails are generally arranged on a steel beam, and concrete plates and the steel beam are combined into a whole through cast-in-situ or wet joints to stretch prestressed tendons of the concrete plates.
However, in the traditional structure and construction method, a part of prestress is transmitted to the steel structure by the shear nails, so that on one hand, the effective prestress on the concrete slab is reduced, and the consumption of prestress ribs is required to be increased in order to achieve the prestress effect of the concrete slab; on the other hand, the prestress transmitted to the steel beam through the shear nails increases the load of the steel beam, and the section of the steel beam needs to be enlarged, and the weight and materials of the structure are increased; particularly, in a hogging moment area, a large number of prestressed tendons are required to be arranged in order to avoid cracking of the concrete bridge deck, so that great waste is caused; and moreover, the cast-in-situ or wet joint construction is complicated, and the construction period is long.
Disclosure of Invention
Aiming at least one of the defects or the improvement demands of the prior art, the invention provides the post-bonding steel-hybrid bonding beam for efficiently applying the prestress, which has the advantages of simple and reasonable structure, convenient and quick construction, good performance and capability of economically and efficiently applying the prestress.
In order to achieve the above object, according to one aspect of the present invention, there is provided a rear-bonded steel-hybrid composite beam for efficiently applying prestress, which includes a concrete slab, a steel beam, and a shear pin;
The concrete slab comprises a precast concrete slab, prestressed tendons, longitudinal wet joints and transverse glue joints; the inside of the precast concrete slab is longitudinally provided with a plurality of prestress ribs, the steel beam is arranged below the longitudinal wet joint, and a plurality of shear nails are fixed in the longitudinal wet joint and above the steel beam;
The precast concrete plates are connected through the transverse glue joints in a gluing way; tensioning the prestressed tendons after the cementing is finished; and after tensioning is finished, pouring the longitudinal wet joints on two lateral sides of the precast concrete board for wet connection.
Preferably, the rear bonding steel-hybrid bonding beam further comprises a rubber pad; the rubber pads are arranged between the lower sides of the two transverse ends of the precast concrete board and the steel beams, and extend along the periphery of the longitudinal wet joint.
Preferably, the side surfaces of the precast concrete panel at the longitudinal wet joint are at least partially in the shape of longitudinally extending serrations.
Preferably, the side surfaces of the two precast concrete slabs at the transverse glue joint are provided with a plurality of mutually matched shear tenons, and the transverse two sides of each group of shear tenons are respectively provided with one prestress rib.
Preferably, the steel beam comprises longitudinal beams and transverse beams, wherein the longitudinal beams are arranged below the longitudinal wet joints, and the transverse beams are supported below the precast concrete plates and are staggered with a plurality of the longitudinal beams.
Preferably, a plurality of shear nails are arranged in the longitudinal wet joint at intervals along the transverse direction and the longitudinal direction, and are uniformly distributed.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a bridge using the post-bonded steel-hybrid girder for efficiently applying prestress as described above as a deck.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a construction method of a post-bonded steel-hybrid composite beam for efficiently applying prestress as described above, comprising the steps of:
1. when the concrete slab is precast, a short line method or a long line method is adopted to arrange a primary-secondary shear tenon at the joint of the transverse glue, and a pipeline of the longitudinal prestressed tendon is reserved;
2. erecting a steel beam on site, and arranging wet joint shear nails at the top of the steel beam;
3. The precast concrete slab is transported to the site, and a rubber pad is stuck at the edge contacted with the steel beam;
4. Performing glue joint connection at the transverse glue joint of the adjacent precast concrete plates, and tensioning the longitudinal prestressed tendons after the transverse glue joint assembly of the concrete plates is completed;
5. and pouring longitudinal wet joints on two sides of the precast concrete slab for wet connection.
Preferably, in the fourth step, epoxy glue is coated at the joint of the transverse glue for glue joint.
Preferably, in step four, the pre-compression is also applied by a temporary pre-compression device when the glue joint is performed.
The above-described preferred technical features may be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
1. The invention relates to a high-efficiency prestressed post-bonding steel-concrete bonding beam, which adopts a post-bonding technology of a precast bridge deck and a steel beam, pretensions prestressed tendons, and then casts a longitudinal bridge wet joint, thereby overcoming the difficulty that the prestress of a concrete bridge deck is transferred to the steel beam by shear nails, avoiding the increase of the size and the consumption of the prestressed tendons, the steel beam and the like, and saving the engineering quantity.
2. The post-combined steel-concrete combined beam for efficiently applying the prestress changes the transverse bridge wet joint of the concrete slab of the existing steel-concrete combined beam into the glue joint, realizes the tensioning of longitudinal prestress before the longitudinal bridge wet joint is poured, achieves the aim of improving the effective prestress of the concrete slab, optimizes the structural design, improves the construction efficiency and can obtain remarkable economic and social benefits.
3. The high-efficiency prestressed rear-combined steel-concrete combined beam adopts the transverse-bridge-to-glue joint assembly technology of the prefabricated bridge deck slab to realize the 'rear combination' of the bridge deck slab and the steel beam, adopts epoxy glue for the transverse-bridge-to-joint of the bridge deck slab, and performs glue joint assembly through temporary prepressing, thereby avoiding the arrangement of shear nails and the casting of wet joints on the top of the steel beam.
4. The post-combined steel-concrete combined beam with high-efficiency prestress, disclosed by the invention, changes all the concrete plates of the existing steel-concrete combined beam into dry-wet combination, saves the construction period and improves the construction efficiency.
5. The post-bonded steel-concrete bonded beam capable of efficiently applying the prestress is particularly suitable for being used as a bridge deck in the field of bridges, has a simple and reasonable structure and strong universality, can be widely applied to other engineering construction fields, and has a wide application prospect.
Drawings
FIG. 1 is a schematic cross-sectional view of a post-bonded steel-hybrid bond beam of the present invention with high efficiency in prestressing;
fig. 2 is a schematic top view of a concrete slab of the high efficiency prestressed rear-bonded steel-hybrid girder of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the invention, as shown in figures 1-2, the invention provides a post-bonded steel-concrete bonded beam with high-efficiency prestressing, which is particularly suitable for being used as a bridge deck on a bridge and can also be widely used for replacing the original steel-concrete bonded beam of other engineering construction, and the bridge is taken as an example for the following.
The rear combined steel-concrete combined beam comprises a concrete slab 1, a steel beam 2, shear nails 3, rubber pads 4 and shear tenons 5.
The concrete slab 1 comprises a precast concrete slab 1-1, prestressed tendons 1-2, a longitudinal wet joint 1-3 and a transverse glue joint 1-4; the inside of the precast concrete slab 1-1 is longitudinally provided with a plurality of prestressed tendons 1-2, the steel beam 2 is arranged below the longitudinal wet joint 1-3, and a plurality of shear nails 3 are fixed in the longitudinal wet joint 1-3 and above the steel beam 2. As shown in fig. 2, the side surface of the precast concrete panel 1-1 at the longitudinal wet joint 1-3 is at least partially in a saw tooth shape extending longitudinally to enhance the connection strength of the cast concrete of the longitudinal wet joint 1-3.
As shown in fig. 2, the steel girder 2 includes stringers disposed under the longitudinal wet joint 1-3 and cross members supported under the precast concrete panel 1-1 and staggered with respect to a plurality of stringers.
As shown in fig. 2, the shear pins 3 are arranged in the longitudinal wet joint 1-3 at intervals in the transverse direction and in the longitudinal direction, and are uniformly distributed.
As shown in fig. 1, the rear-bonding steel-hybrid bonding beam further comprises a rubber pad 4; the rubber pads 4 are disposed between the lower sides of both lateral ends of the precast concrete deck 1-1 and the steel girder 2, and extend along the periphery of the longitudinal wet joint 1-3.
As shown in fig. 1, the side surfaces of the two precast concrete boards 1-1 at the positions of the transverse glue joints 1-4 are provided with a plurality of mutually matched shear tenons 5, and the transverse two sides of each group of shear tenons 5 are respectively provided with one prestress rib 1-2.
The precast concrete boards 1-1 are connected through the transverse glue joints 1-4 in a glue joint mode; tensioning the prestressed tendons 1-2 after the cementing is finished; after tensioning is completed, the longitudinal wet joints 1-3 are poured on two lateral sides of the precast concrete board 1-1 for wet joint connection.
The construction method of the post-bonded steel-hybrid beam comprises the following steps:
1. when the concrete slab 1 is precast, a short line method or a long line method is adopted to arrange a primary-secondary shear tenon 5 at the joint of the transverse glue, and a pipeline of the longitudinal prestressed tendon 1-2 is reserved;
2. erecting a steel beam 2 on site, and arranging wet joint shear nails 3 at the top of the steel beam 2;
3. The precast concrete slab 1 is transported to the site, and a rubber pad 4 is stuck at the edge contacted with the steel beam 2;
4. Brushing epoxy glue at the transverse glue joint 1-4 of the adjacent precast concrete slab 1 for glue joint connection, applying pre-compression force through temporary pre-compression equipment, and tensioning the longitudinal pre-stress tendons 1-2 after the transverse glue joint 1-4 of the concrete slab 1 is assembled;
5. and casting longitudinal wet joints 1-3 on two sides of the precast concrete slab 1 for wet joint connection.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A construction method of a post-bonded steel-hybrid beam with high-efficiency prestressing force application is characterized by comprising the following steps: the rear combined steel-concrete combined beam comprises a concrete slab, a steel beam and a shear pin;
The concrete slab comprises a precast concrete slab, prestressed tendons, longitudinal wet joints and transverse glue joints; the inside of the precast concrete slab is longitudinally provided with a plurality of prestress ribs, the steel beam is arranged below the longitudinal wet joint, and a plurality of shear nails are fixed in the longitudinal wet joint and above the steel beam;
The precast concrete plates are connected through the transverse glue joints in a gluing way; tensioning the prestressed tendons after the cementing is finished; after tensioning is completed, pouring the longitudinal wet joints on two lateral sides of the precast concrete board for wet connection;
The construction method of the rear combined steel-hybrid combined beam comprises the following steps:
1. when the concrete slab is precast, a short line method or a long line method is adopted to arrange a primary-secondary shear tenon at the joint of the transverse glue, and a pipeline of the longitudinal prestressed tendon is reserved;
2. erecting a steel beam on site, and arranging wet joint shear nails at the top of the steel beam;
3. The precast concrete slab is transported to the site, and a rubber pad is stuck at the edge contacted with the steel beam;
4. Performing glue joint connection at the transverse glue joint of the adjacent precast concrete plates, and tensioning the longitudinal prestressed tendons after the transverse glue joint assembly of the concrete plates is completed;
5. and pouring longitudinal wet joints on two sides of the precast concrete slab for wet connection.
2. The construction method of the post-bonded steel-hybrid bond beam for efficiently applying prestress according to claim 1, wherein the construction method comprises the following steps:
And fourthly, brushing epoxy glue at the joint of the transverse glue for glue joint connection.
3. The construction method of the post-bonded steel-hybrid bond beam for efficiently applying prestress according to claim 1 or 2, wherein:
and step four, applying pre-compression by temporary pre-compression equipment when the glue joint is carried out.
4. The construction method of the post-bonded steel-hybrid bond beam for efficiently applying prestress according to claim 1, wherein the construction method comprises the following steps:
the rear combined steel-mixed combined beam further comprises a rubber pad; the rubber pads are arranged between the lower sides of the two transverse ends of the precast concrete board and the steel beams, and extend along the periphery of the longitudinal wet joint.
5. The construction method of the post-bonded steel-hybrid bond beam for efficiently applying prestress according to claim 1, wherein the construction method comprises the following steps:
the side surfaces of the two precast concrete boards at the transverse glue joint are provided with a plurality of mutually matched shear tenons, and the transverse two sides of each group of shear tenons are respectively provided with one prestress rib.
6. The construction method of the post-bonded steel-hybrid bond beam for efficiently applying prestress according to claim 1, wherein the construction method comprises the following steps:
The girder steel includes longeron and crossbeam, the longeron sets up in vertical wet seam below, the crossbeam support in precast concrete board below to with a plurality of the longeron staggered arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108477.4A CN109629419B (en) | 2019-01-18 | 2019-01-18 | Post-bonded steel-concrete bonded beam and bridge with high-efficiency prestressing force application and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910108477.4A CN109629419B (en) | 2019-01-18 | 2019-01-18 | Post-bonded steel-concrete bonded beam and bridge with high-efficiency prestressing force application and construction method |
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| Publication Number | Publication Date |
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| CN109629419A CN109629419A (en) | 2019-04-16 |
| CN109629419B true CN109629419B (en) | 2024-04-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629419B (en) * | 2019-01-18 | 2024-04-19 | 中铁第四勘察设计院集团有限公司 | Post-bonded steel-concrete bonded beam and bridge with high-efficiency prestressing force application and construction method |
| CN110184913A (en) * | 2019-06-04 | 2019-08-30 | 中铁第四勘察设计院集团有限公司 | A kind of slow cohesion weldering nail, steel-concrete composite beam and its forming method |
| CN110578288A (en) * | 2019-08-28 | 2019-12-17 | 中铁大桥局集团有限公司 | steel-concrete combined beam system conversion device and steel beam weight-pressing method |
| CN110541356B (en) * | 2019-09-05 | 2021-04-13 | 浙江交通职业技术学院 | Manufacturing process of steel-concrete composite beam bridging joint structure |
| CN112239991A (en) * | 2020-09-01 | 2021-01-19 | 中铁工程设计咨询集团有限公司 | Common span emergency repair simply-supported steel-concrete combined beam for railway |
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| CN209652758U (en) * | 2019-01-18 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | A kind of prestressed concrete plate steel-mixes the bridge of bondbeam and the use bondbeam |
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2019
- 2019-01-18 CN CN201910108477.4A patent/CN109629419B/en active Active
Patent Citations (6)
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| CN101864729A (en) * | 2010-06-25 | 2010-10-20 | 清华大学 | Corrugated steel webplate combined box girder floor system for cable-stayed bridge and construction method thereof |
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