CN111608071B - A connection structure and construction method of a steel-concrete joint constructed by asynchronous cantilever - Google Patents
A connection structure and construction method of a steel-concrete joint constructed by asynchronous cantilever Download PDFInfo
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- CN111608071B CN111608071B CN202010563692.6A CN202010563692A CN111608071B CN 111608071 B CN111608071 B CN 111608071B CN 202010563692 A CN202010563692 A CN 202010563692A CN 111608071 B CN111608071 B CN 111608071B
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a connection structure of an asynchronous cantilever construction reinforced concrete joint part and a construction method thereof, wherein the connection structure comprises a corrugated steel plate, a flange plate, an open-pore rib plate, penetrating reinforcing steel bars, a rubber sleeve, L-shaped steel and a concrete top plate, wherein the corrugated steel plate is welded at the bottom of the flange plate, the flange plate is uniformly and equally divided by the lower corrugated steel plate, the open-pore rib plate is symmetrically welded on the surface of the flange plate, the penetrating reinforcing steel bars penetrate through the open-pore rib plate, the rubber sleeve wraps the penetrating reinforcing steel bars, the L-shaped steel is symmetrically welded on the outer side of the open-pore rib plate, and the concrete top plate wraps all the structures. Compared with the original connection structure, the invention can effectively avoid the influence of local horizontal shearing force on concrete, avoid the cracking of the concrete at the end part and ensure the engineering quality under the action of the same load. And all the components are symmetrically arranged, so that the construction is simple and convenient, and the influence on the construction progress is very little.
Description
Technical Field
The invention relates to the field of bridge engineering, relates to cantilever construction of a corrugated steel web, and in particular relates to a connection structure of an asynchronous cantilever construction reinforced concrete joint and a construction method thereof.
Background
Compared with a common diamond hanging basket, the hanging basket has the advantages that the structure of the hanging basket for asynchronous cantilever construction in bridge engineering is simplified, the dead weight is reduced, the action position is moved from a top plate of a poured section to a folded steel web of a section to be poured, the hanging basket is simplified in structure, the web is convenient to hoist, the hanging basket is simply supported on an upper flange plate, the hanging basket is convenient to move, 3 working faces are independent from each other, the construction efficiency is high, the hanging basket load is borne by a corrugated steel plate, and the material utilization rate is fully exerted. However, since the corrugated steel plate is used as a main bearing structure for construction, the shearing stress at the interface between two adjacent sections is large, so that the concrete roof is easy to crack.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a connection structure of an asynchronous cantilever construction reinforced concrete joint part and a construction method thereof, which can effectively prevent the influence of local horizontal shearing force on concrete, avoid the cracking of the concrete at the end part, inhibit the cracking of the concrete and further ensure the engineering quality.
The technical scheme adopted by the invention is that the connecting structure of the asynchronous cantilever construction reinforced concrete joint comprises a corrugated steel plate, a flange plate, an open ribbed plate, a penetrating steel bar, a rubber sleeve, L-shaped steel and a concrete top plate;
The corrugated steel plate is welded at the bottom of the upper flange plate, the flange plate is evenly and equally divided by the corrugated steel plate at the lower part, the perforated rib plates are symmetrically welded on the surface of the flange plate, the penetrating reinforcing steel bars penetrate through the perforated rib plates, the rubber sleeve wraps the penetrating reinforcing steel bars, the L-shaped steel is symmetrically welded at the outer side of the perforated rib plates, and the concrete top plate wraps all the structures.
Preferably, the flange plate has a thickness equal to the thickness of the corrugated steel plate, and a width determined according to specific design conditions, and has a length equal to the corrugated steel plate, and is exactly equal to the corrugated steel plate when welded thereto.
Preferably, the perforated rib plates are arranged in two rows, a row of holes are formed in the middle height position of the perforated rib plates and used for penetrating through the penetrating steel bars, the distance between the holes is 2/3 of the width of the flange plates, the perforated rib plates are welded on the surface of the flange plates, and the lengths of the flange plates which are left outside the perforated rib plates in each row are equal.
Preferably, the penetrating steel bar passes through the holes on the two rows of perforated rib plates, and the diameter of the penetrating steel bar is slightly smaller than the aperture of the holes on the perforated steel plate.
Preferably, the rubber sleeve only wraps the penetrating steel bars in the first row of holes and the second row of holes in the construction advancing direction of the perforated rib plate, the length of the rubber sleeve is 5 times of the thickness of the perforated rib plate, and the diameter of the penetrating steel bars wrapped by the rubber sleeve is equal to the aperture of the perforated steel plate.
Preferably, the L-shaped steel is only welded on the outer surface of the forefront end of the construction advancing direction of the perforated rib plate, two groups of the L-shaped steel are welded together and are positioned in the middle of the perforated rib plate, each group of holes corresponds to one group of L-shaped steel, and the specification of the L-shaped steel is determined according to specific design conditions.
Preferably, the concrete top plate is formed by casting concrete and curing after the connection structure is constructed, the thickness of the concrete top plate is larger than the height of the perforated steel plate, and the width of the concrete top plate is larger than the distance between the two corrugated steel plates.
The construction method of the connection structure of the asynchronous cantilever construction reinforced concrete joint part specifically comprises the following steps:
Step one, manufacturing a corrugated steel plate, a flange plate and an open-pore rib plate according to design conditions, and welding in a factory according to requirements.
And secondly, conveying the welded corrugated steel plate, the flange plate and the perforated rib plate to the site, hoisting by using a lifting appliance, and fixing the corrugated steel plate, the flange plate and the perforated rib plate when reaching the designated position.
And thirdly, symmetrically welding two groups of L-shaped steel on the outer side of the forefront end of the perforated rib plate in the construction advancing direction, wherein the L-shaped steel is positioned at the middle height of the perforated rib plate.
And fourthly, penetrating the holes of the perforated rib plates by penetrating the reinforcing steel bars, only penetrating the first two groups of holes, and wrapping the penetrating reinforcing steel bars penetrating the holes with a rubber sleeve, wherein the length of the rubber sleeve is 5 times the thickness of the perforated rib plates.
And fifthly, pouring concrete after the construction of the components is finished. And (5) carrying out construction of the next section after maintenance is completed.
The invention has the beneficial effects that the L-shaped steel on the outer surface of the perforated rib plate and the rubber ring penetrating through the steel bar can effectively resist the shearing stress at the position, so that the concrete at the end part is prevented from cracking under the action of the same load, and the engineering quality is ensured. And all the components are symmetrically arranged, so that the construction is simple and convenient, and the influence on the construction progress is very little.
Drawings
FIG. 1 is a diagram of the connection construction of the steel-concrete joint for the asynchronous cantilever construction of the present invention.
Fig. 2 is a detailed view of the connection structure of the steel-concrete joint for the asynchronous cantilever construction of the present invention.
Fig. 3 is a side view of a connection structure of the steel-concrete joint for the asynchronous cantilever construction of the present invention.
The concrete slab comprises a corrugated steel plate 1, a section steel 2, a rubber sleeve 3, a penetrating steel bar 4, an open ribbed plate 5, a concrete top plate 6 and a flange plate 7.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples.
As shown in figures 1,2 and 2, the connecting structure of the asynchronous cantilever construction reinforced concrete joint comprises a 1 wave-shaped steel plate, 2L-shaped steel, 3 rubber sleeves, 4 penetrating steel bars, 5 perforated rib plates, 6 concrete top plates and 7 flange plates.
The corrugated steel plate 1 is welded at the bottom of the upper flange plate 7, the flange plate 7 is evenly and equally divided by the lower corrugated steel plate 1, the perforated rib plates 5 are symmetrically welded on the surface of the flange plate 7, the penetrating reinforcing steel bars 4 penetrate through the perforated rib plates 5, the rubber sleeve 3 wraps the penetrating reinforcing steel bars 4, the L-shaped steel 2 is symmetrically welded on the outer side of the perforated rib plates 5, and the concrete top plate 6 wraps all the structures.
The thickness of the corrugated steel plate 1 is about 1.5cm, and the length and the height are determined according to specific design conditions and are welded at the bottom of the flange plate 7.
The thickness of the flange plate 7 is equal to the plate thickness of the corrugated steel plate 1, the width is determined according to specific design conditions, the length of the flange plate is equal to the corrugated steel plate 1, and the flange plate is just equally divided by the corrugated steel plate 1 when being welded with the corrugated steel plate 1.
The perforated rib plates 5 are arranged in two rows, a row of holes are formed in the middle height position of the perforated rib plates 5 and used for penetrating through the penetrating steel bars 4, the hole spacing d is arranged according to design conditions, the spacing between the two rows of perforated rib plates 5 is 2/3 of the width of the flange plate 7, the perforated rib plates 5 are welded on the surface of the flange plate 7, and the lengths of the flange plates which are left outside each row of perforated rib plates 5 are equal.
The rubber sleeve 3 only wraps the penetrating steel bars 4 in the first row of holes and the second row of holes in the construction advancing direction of the perforated rib plate 5, the length of the rubber sleeve 3 is 5 times of the thickness of the perforated rib plate 5, and the diameter of the penetrating steel bars 4 wrapping the rubber sleeve 3 is equal to the aperture of the perforated rib plate 5.
The L-shaped steel 2 is welded on the outer surface of the forefront end of the perforated rib plate 5 in the construction advancing direction, two groups of the L-shaped steel 2 are welded together, the L-shaped steel 2 is positioned at the middle height position of the perforated rib plate 5, and the specification is determined according to specific design conditions.
And after the construction of the connecting structure is finished, the concrete top plate 6 is formed by pouring concrete and curing.
The invention provides a construction method of a steel-concrete joint connection structure, which specifically comprises the following steps:
Step one, manufacturing the corrugated steel plate 1, the flange plate 7 and the perforated rib plate 5 according to design conditions, and welding in a factory according to requirements.
And secondly, conveying the welded corrugated steel plate 1, the flange plate 7 and the perforated rib plate 5 to the site, hoisting by using a lifting appliance, and fixing the corrugated steel plate when reaching the designated position.
And thirdly, symmetrically welding two groups of L-shaped steel 2 on the outer side of the forefront end of the perforated rib plate 5 in the construction advancing direction, wherein the L-shaped steel 2 is positioned at the middle height of the perforated rib plate 5.
And step four, penetrating the holes of the perforated rib plates 5 by the penetrating steel bars 4, penetrating only the first two groups of holes, and wrapping the penetrating steel bars 4 penetrating the holes with the rubber sleeve 3, wherein the length of the rubber sleeve 3 is 5 times the thickness of the perforated rib plates 5.
And fifthly, pouring concrete after the construction of the components is finished. And (5) carrying out construction of the next section after maintenance is completed.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that many changes, modifications, substitutions and variations can be made to these embodiments without departing from the spirit and scope of the invention.
Claims (2)
1. The connection structure of the asynchronous cantilever construction reinforced concrete joint is characterized by comprising a corrugated steel plate, an upper flange plate, an apertured rib plate, a penetrating steel bar, a rubber sleeve, L-shaped steel and a concrete top plate;
The corrugated steel plate is welded at the bottom of the upper flange plate, the flange plate is uniformly and equally divided by the lower corrugated steel plate, the perforated rib plates are symmetrically welded on the surface of the flange plate, the penetrating reinforcing steel bars penetrate through the perforated rib plates, the rubber sleeve wraps the penetrating reinforcing steel bars, the L-shaped steel is symmetrically welded on the outer side of the perforated rib plates, and the concrete top plate wraps all the structures;
the thickness of the corrugated steel plate is 1.5cm, and the corrugated steel plate is welded at the bottom of the flange plate;
The thickness of the flange plate is equal to the thickness of the corrugated steel plate, the length of the flange plate is equal to the length of the corrugated steel plate, and the flange plate is just equally divided by the corrugated steel plate when being welded with the corrugated steel plate;
The two rows of perforated rib plates are arranged, a row of holes is formed in the middle height position of each perforated rib plate and used for penetrating through the penetrating steel bars, the distance between the two rows of perforated rib plates is 2/3 of the width of the flange plate, the perforated rib plates are welded on the surface of the flange plate, and the lengths of the flange plates which are vacant outside each row of perforated rib plates are equal;
the penetrating steel bar passes through the holes on the two rows of perforated rib plates, and the diameter of the penetrating steel bar is slightly smaller than the aperture of the holes on the perforated rib plates;
The rubber sleeve only wraps penetrating steel bars in the first row of holes and the second row of holes in the construction advancing direction of the perforated rib plate, the length of the rubber sleeve is 5 times of the thickness of the perforated rib plate, and the diameter of the penetrating steel bars wrapped by the rubber sleeve is equal to the aperture of the perforated steel plate;
The L-shaped steel is welded on the outer surface of the forefront end of the perforated rib plate in the construction advancing direction, and two groups of the L-shaped steel are welded together and positioned in the middle of the perforated rib plate;
and after the connection structure is constructed, pouring concrete and curing the concrete roof.
2. The construction method of the connection structure of the asynchronous cantilever construction reinforced concrete joint part according to claim 1 is characterized by comprising the following steps:
Step one, manufacturing a corrugated steel plate, a flange plate and an open-pore rib plate according to design conditions, and welding in a factory;
step two, conveying the welded corrugated steel plate, flange plate and perforated rib plate to the site, hoisting by using a lifting appliance, and fixing when reaching a designated position;
Symmetrically welding two groups of L-shaped steel on the outer side of the forefront end of the perforated rib plate in the construction advancing direction, wherein the L-shaped steel is positioned at the middle height of the perforated rib plate;
Step four, penetrating the holes of the perforated rib plates by penetrating the reinforcing steel bars, penetrating only the first two groups of holes, and wrapping the penetrating reinforcing steel bars penetrating the holes with a rubber sleeve, wherein the length of the rubber sleeve is 5 times the thickness of the perforated rib plates;
And fifthly, pouring concrete after the construction of the components is finished, and constructing the next section after the maintenance is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010563692.6A CN111608071B (en) | 2020-06-19 | 2020-06-19 | A connection structure and construction method of a steel-concrete joint constructed by asynchronous cantilever |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010563692.6A CN111608071B (en) | 2020-06-19 | 2020-06-19 | A connection structure and construction method of a steel-concrete joint constructed by asynchronous cantilever |
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| CN111608071A CN111608071A (en) | 2020-09-01 |
| CN111608071B true CN111608071B (en) | 2025-02-18 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212611915U (en) * | 2020-06-19 | 2021-02-26 | 苏交科集团股份有限公司 | Steel-concrete joint connection structure suitable for self-bearing construction of corrugated steel web |
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| SE503167C2 (en) * | 1994-08-22 | 1996-04-15 | Sven Eric Paars | Roof structure of canvas or awning type and canvas set for this |
| JP3632760B2 (en) * | 2001-05-09 | 2005-03-23 | ドーピー建設工業株式会社 | Corrugated steel web and PC deck bridges |
| CN201314025Y (en) * | 2008-08-20 | 2009-09-23 | 北京锦泰安联桥梁钢构技术有限公司 | Concrete pin shear key structure with elliptical opening |
| CN202324197U (en) * | 2011-11-29 | 2012-07-11 | 中铁二院工程集团有限责任公司 | Flexible stud shear connecting component for steel and concrete composite structure |
| CN203361345U (en) * | 2013-07-08 | 2013-12-25 | 同济大学 | Rubber ring perforated plate recombination connecting piece |
| CN203403601U (en) * | 2013-07-18 | 2014-01-22 | 杭州博数土木工程技术有限公司 | Combined structure connecting key with wavy edge type flange plate |
| CN103437495B (en) * | 2013-07-18 | 2016-12-07 | 浙江中隧桥波形钢腹板有限公司 | Flexible rubber ring combinative structure connecting key |
| CN204435200U (en) * | 2014-12-30 | 2015-07-01 | 中铁七局集团第五工程有限公司 | High ferro prefabricated case beam end-blocking rubber sleeve |
| CN206090273U (en) * | 2016-09-09 | 2017-04-12 | 湖南省交通规划勘察设计院 | Prefabricated UHPC of assembling of festival section wave form steel web combination box beam and cable -stay bridge |
| CN109610310B (en) * | 2018-12-12 | 2023-07-25 | 湖南大学 | Steel-UHPC Composite Bridge Deck Structure Applicable to Cantilever State and Its Construction Method |
| CN210288088U (en) * | 2019-05-31 | 2020-04-10 | 景洪市橄榄坝至景哈乡澜沧江大桥建设指挥部 | Limited buffer shear connector with rubber ring |
| CN110761164A (en) * | 2019-11-29 | 2020-02-07 | 中交大建(西安)桥梁科技有限公司 | Corrugated steel web suitable for various construction methods |
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| CN212611915U (en) * | 2020-06-19 | 2021-02-26 | 苏交科集团股份有限公司 | Steel-concrete joint connection structure suitable for self-bearing construction of corrugated steel web |
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