CN111622113A - Steel-concrete composite beam prefabricated bridge deck installation and combination interface seam treatment process - Google Patents
Steel-concrete composite beam prefabricated bridge deck installation and combination interface seam treatment process Download PDFInfo
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- CN111622113A CN111622113A CN202010382451.1A CN202010382451A CN111622113A CN 111622113 A CN111622113 A CN 111622113A CN 202010382451 A CN202010382451 A CN 202010382451A CN 111622113 A CN111622113 A CN 111622113A
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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
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Structural Engineering (AREA)
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Abstract
A steel-concrete composite beam prefabricated bridge deck slab installation and combination interface seam treatment process comprises the following steps: (1) detecting and checking the size and elevation of the steel girder; (2) fixedly installing a datum line on the prefabricated bridge deck; (3) setting an installation datum line on the steel main beam; (4) adhering an ethylene propylene diene monomer elastic rubber sealing gasket to the top surface of the steel main beam; (5) and (6) installing the prefabricated bridge deck. According to the process, the upper surface and the lower surface of the ethylene propylene diene monomer elastic rubber sealing gasket are respectively glued with the prefabricated bridge deck and the steel main beam, the elasticity, the waterproofness and the adhesiveness of the ethylene propylene diene monomer elastic rubber sealing gasket are fully utilized, the compaction and the close adhesion of the prefabricated bridge deck and the steel main beam and the installation stability of the bridge deck are ensured, and therefore the treatment of the installation combination interface of the prefabricated bridge deck of the composite beam is completed.
Description
Technical Field
The invention relates to a process for processing a mounting and bonding interface seam of a prefabricated bridge deck of a steel-concrete composite beam.
Background
With the development of bridge construction in China, the steel-concrete composite beam bridge has the advantages of both a steel bridge and a concrete bridge, and is increasingly applied to bridge structures. In the 'design specification of steel-concrete composite bridges GB 50917-2013' of China, it is clearly specified that 'when prefabricated reinforced concrete bridge decks are used as bridge decks, measures are adopted to enable prefabricated plates and steel beams to be closely attached to meet waterproof requirements', and meanwhile, in the 'design and construction specification of road steel-concrete composite bridges JTG/T D64-01-2015' about the durability of steel-concrete contact surfaces, the 'concrete configuration, structural requirements, construction process and other aspects are specified to prevent the contact surfaces from being separated from each other'. Therefore, it is an indispensable design and construction link to perform anti-corrosion design and construction on the combination interface of the steel concrete composite beam so as to ensure the durability of the structure. And when the steel beam is manufactured, the top surface of the steel beam and the bottom surface of the precast concrete bridge deck slab are precast by 0-2 mm, so that the existing method for sealing the steel-concrete gap by only adopting a common rubber strip cannot achieve the close adhesion effect, the slurry leakage phenomenon is easy to occur in the subsequent wet seam cast-in-place process, and the corrosion prevention significance of the combined beam cannot be achieved.
Disclosure of Invention
The invention aims to provide a process for processing an installation and combination interface seam of a prefabricated bridge deck of a steel-concrete composite beam, and solves the problems that the existing method for sealing the steel-concrete seam by using a common rubber strip for the installation and combination interface seam of the prefabricated bridge deck of the steel-concrete composite beam cannot achieve the design effect and cannot achieve the anti-corrosion significance of the composite beam.
The technical scheme adopted for achieving the purpose is that the process for processing the installation and combination interface seam of the prefabricated bridge deck slab of the steel-concrete composite beam comprises the following steps:
(1) before the prefabricated bridge deck is hoisted, a theodolite and a level gauge are used for detecting and checking the size and the elevation of the steel main beam;
(2) marking a bridge deck installation reference line on the prefabricated bridge deck according to the central position of the prefabricated bridge deck, and marking a prepared mark by using an ink fountain snapping line;
(3) popping up a corresponding installation datum line on the steel main beam by using an ink fountain according to the design central position of the prefabricated bridge deck;
(4) cleaning the top surface of the steel main beam, tearing off a sticker on one surface of the ethylene propylene diene monomer elastic rubber sealing gasket, and sticking the ethylene propylene diene monomer elastic rubber sealing gasket on the top surface of the steel main beam at the joint of the steel main beam and the prefabricated bridge deck;
(5) after the ethylene propylene diene monomer elastic sealing gasket is glued with the steel main beam, hoisting the prefabricated bridge deck, precisely aligning and installing a basic line when the prefabricated bridge deck is 10cm away from the top surface of the steel main beam, tearing off the sticker on the other side of the ethylene propylene diene monomer elastic sealing gasket, slowly hoisting and lowering the prefabricated bridge deck, precisely bonding the prefabricated bridge deck with the ethylene propylene diene monomer elastic sealing gasket, and finishing the treatment of the prefabricated bonding interface seam of the steel-concrete composite beam bridge deck.
Furthermore, the sticking width of the ethylene propylene diene monomer elastic rubber sealing gasket stuck on the top surface of the steel girder at the joint of the steel girder and the prefabricated bridge deck slab is larger than the size of the joint interface of the steel-concrete composite beam, so that the joint of the joint interface is firmly and closely stuck.
Further, the installation reference line of the bridge deck needs to ensure that the reference lines of the ink fountain bullets used on the prefabricated bridge deck and the steel main beam coincide with each other, so that the installation precision is ensured.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
1. The process fully utilizes the excellent characteristics of the ethylene propylene diene monomer elastic rubber sealing gasket, ensures the close adhesion between the steel main beam and the precast concrete, ensures the waterproofness of the steel main beam, and avoids slurry leakage caused by subsequent wet joint construction;
2. the ethylene propylene diene monomer elastic rubber sealing gasket in the process has elasticity, so that the sliding of the bridge deck caused by the walking of subsequent construction personnel on the bridge deck is avoided, and the mounting stability of the precast concrete bridge deck is ensured;
3. the process has the characteristic of simple and convenient operation, and can be widely applied to the construction of the joint seam of the steel-concrete composite beam.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the installation of the precast bridge deck slab of the steel-concrete composite beam of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings.
A steel-concrete composite beam prefabricated bridge deck slab installation and combination interface seam treatment process comprises the following steps:
(1) before the prefabricated bridge deck is hoisted, a theodolite and a level are used for detecting and checking the size and the elevation of the steel beam;
(2) marking a bridge deck installation reference line on the bridge deck according to the central position of the prefabricated bridge deck, and marking a prepared mark by using an ink fountain snapping line;
(3) popping up a corresponding installation reference line on the steel main beam by using an ink fountain according to the design center position of the bridge deck;
(4) cleaning the top surface of the steel main beam, tearing off a sticker on one surface of the ethylene propylene diene monomer elastic rubber sealing gasket, and sticking the ethylene propylene diene monomer elastic rubber sealing gasket on the top surface of the steel main beam at the joint of the steel main beam and the prefabricated bridge deck;
(5) after the ethylene propylene diene monomer elastic sealing gasket is glued with the steel main beam, hoisting the prefabricated bridge deck, precisely aligning and installing a basic line when the prefabricated bridge deck is about 10cm away from the top surface of the steel main beam, tearing off the sticker on the other side of the ethylene propylene diene monomer elastic sealing gasket, slowly hoisting and lowering the prefabricated bridge deck to be precisely glued with the ethylene propylene diene monomer elastic sealing gasket, and finishing the treatment of the prefabricated combination interface seam of the steel-concrete composite beam bridge deck.
The sticking width of the ethylene propylene diene monomer elastic rubber sealing gasket stuck on the top surface of the steel main beam at the joint of the steel main beam and the prefabricated bridge deck is larger than the size of the joint interface of the steel-concrete composite beam, so that the joint of the joint interface is firmly and closely stuck.
The installation reference line of the bridge deck is required to be ensured to be coincident with the reference line of the ink fountain bomb on the prefabricated bridge deck and the steel main beam, so that the installation precision is ensured.
In the concrete implementation of the present invention, as shown in fig. 1, the structure for installing the precast bridge deck slab of the steel-concrete composite beam comprises: a steel main beam 1; prefabricating a bridge deck 2; an ethylene propylene diene elastic rubber gasket 3; the deck slab installation datum line 4. The steel main beam 1 is in a lattice beam form and mainly comprises a main longitudinal beam, a secondary longitudinal beam and a cross beam; the main longitudinal beam adopts a steel box section, the beam height is 3.2m, the beam width is 2.9m, the secondary longitudinal beam adopts an I-shaped steel plate beam, the beam height is 0.8m, the top plate width is 0.60m, a cross beam is arranged at the longitudinal interval of 3.6m of the standard beam section, the cross beam adopts an I-shaped steel plate beam, the cross beam height is 2.2m, the top plate width is 0.65m, and the main longitudinal beam, the secondary longitudinal beam and the cross beam are all connected by welding; the steel main beam is always spliced into a whole section at a bridge position for installation, and due to errors in the manufacturing and installation processes, the top surface of the top plate of the steel main beam can have unevenness errors of 0mm-2mm inevitably. The prefabricated bridge deck slab 2 is of a C50 steel fiber reinforced concrete structure, the thickness is 25cm, the length is 5.875m, the width is 3.05m, the prefabricated bridge deck slab is prefabricated by a factory, and when the prefabricated bridge deck slab is prefabricated by the factory, the bottom die error can also cause the inevitable existence of an error of 0mm-2mm at the bottom of the prefabricated bridge deck slab; the prefabricated bridge deck 2 is positioned on the steel girder 1, and the prefabricated bridge deck 2 and the steel girder 1 are connected by adopting a cast-in-place wet joint.
Because of the manufacturing and installation errors of the steel girder 1, in order to ensure the close contact of the combination interface of the combination beam, the combination interface of the bridge deck 2 and the steel girder 1 adopts the ethylene propylene diene monomer elastic rubber pad 3 for sealing and stabilizing, and the concrete construction steps are as follows:
1) before the prefabricated bridge deck 2 is hoisted, a theodolite and a level gauge are used for detecting and checking the size and the elevation of the steel main beam 1, and the error of the steel main beam is ensured to be within the design and standard allowable range;
2) marking a bridge deck installation reference line 4 on the prefabricated bridge deck 2 according to the central position of the prefabricated bridge deck 2, and marking by using an ink fountain snapping line;
3) popping up a corresponding installation datum line on the steel main beam 1 by using an ink fountain according to the design central position of the prefabricated bridge deck 2;
4) cleaning the top surface of the steel main beam 1, cutting the ethylene propylene diene monomer elastic rubber sealing gasket 3 according to the size of a combination beam combination interface, tearing off a sticker on one surface of the ethylene propylene diene monomer elastic rubber sealing gasket 3, and sticking the ethylene propylene diene monomer elastic rubber sealing gasket 3 on the top surface of the steel main beam 1 at the combination part of the steel main beam 1 and the prefabricated bridge deck 2;
5) after the ethylene propylene diene monomer elastic sealing gasket 3 is glued with the steel main beam 1, hoisting the prefabricated bridge deck 2, precisely aligning and installing a datum line when the prefabricated bridge deck is 10cm away from the top surface of the steel main beam 1, tearing off a sticker on the other side of the ethylene propylene diene monomer elastic sealing gasket 3, slowly hoisting and lowering the prefabricated bridge deck 2, precisely bonding the prefabricated bridge deck with the ethylene propylene diene monomer elastic sealing gasket 3, and finishing the treatment of the prefabricated combination interface seam of the steel-concrete composite beam bridge deck.
The construction condition of the cast-in-place wet joint between the subsequent prefabricated bridge deck slab and the steel girder shows that the sealing performance is good, and due to the elasticity of the ethylene propylene diene monomer elastic rubber sealing gasket, the unevenness errors of the top surface of the steel girder and the bottom surface of the prefabricated bridge deck slab can be eliminated under the self weight of the prefabricated bridge deck slab, so that the prefabricated bridge deck slab is closely attached to the prefabricated bridge deck slab, and meanwhile, the instability of the prefabricated bridge deck slab caused by the operation of constructors on the prefabricated bridge deck slab is avoided.
The invention is technically characterized in that the ethylene propylene diene monomer rubber is applied to the construction of the composite beam, the problem of the close adhesion of the combination interface of the composite beam is solved, the corrosion resistance and durability of the structure are improved, the structural stress of the cemented steel-concrete composite beam is improved, and the installation stability of the prefabricated bridge deck is improved.
Claims (3)
1. A process for treating a joint interface seam of a prefabricated bridge deck of a steel-concrete composite beam is characterized by comprising the following steps of:
before the prefabricated bridge deck is hoisted, a theodolite and a level gauge are used for detecting and checking the size and the elevation of the steel main beam;
marking a bridge deck installation reference line on the prefabricated bridge deck according to the central position of the prefabricated bridge deck, and marking a prepared mark by using an ink fountain snapping line;
popping up a corresponding installation datum line on the steel main beam by using an ink fountain according to the design central position of the prefabricated bridge deck;
cleaning the top surface of the steel main beam, tearing off a sticker on one surface of the ethylene propylene diene monomer elastic rubber sealing gasket, and sticking the ethylene propylene diene monomer elastic rubber sealing gasket on the top surface of the steel main beam at the joint of the steel main beam and the prefabricated bridge deck;
after the ethylene propylene diene monomer elastic sealing gasket is glued with the steel main beam, hoisting the prefabricated bridge deck, precisely aligning the installation reference line when the prefabricated bridge deck is about 10cm away from the top surface of the steel main beam, tearing off the sticker on the other side of the ethylene propylene diene monomer elastic sealing gasket, slowly hoisting and lowering the prefabricated bridge deck to be precisely glued with the ethylene propylene diene monomer elastic sealing gasket, and finishing the treatment of the prefabricated combination interface seam of the steel-concrete composite beam bridge deck.
2. The process for treating the joint between the prefabricated bridge deck and the steel-concrete composite beam as claimed in claim 1, wherein the bonding width of the ethylene propylene diene elastic rubber sealing gasket bonded on the top surface of the steel main beam at the joint between the steel main beam and the prefabricated bridge deck is larger than the size of the joint between the steel and concrete composite beams, so as to ensure the tight and firm joint between the joint and the joint.
3. The process for treating the joint seam between the prefabricated bridge deck and the steel-concrete composite beam as claimed in claim 1, wherein the mounting reference line of the bridge deck is determined by the coincidence of the reference lines of ink fountain springs on the prefabricated bridge deck and the steel main beam, so as to ensure the mounting accuracy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382451.1A CN111622113A (en) | 2020-05-08 | 2020-05-08 | Steel-concrete composite beam prefabricated bridge deck installation and combination interface seam treatment process |
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| CN202010382451.1A CN111622113A (en) | 2020-05-08 | 2020-05-08 | Steel-concrete composite beam prefabricated bridge deck installation and combination interface seam treatment process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982161A (en) * | 2021-02-09 | 2021-06-18 | 中铁大桥局集团有限公司 | Steel-concrete combined bridge deck structure and bridge |
| CN114232482A (en) * | 2021-11-25 | 2022-03-25 | 中交路桥华南工程有限公司 | Sealing strip pasting construction platform and sealing strip pasting method |
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| CN114232482A (en) * | 2021-11-25 | 2022-03-25 | 中交路桥华南工程有限公司 | Sealing strip pasting construction platform and sealing strip pasting method |
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Application publication date: 20200904 |