CN112281654A - Semi-assembly type steel skeleton bridge anti-collision guardrail and construction method thereof - Google Patents
Semi-assembly type steel skeleton bridge anti-collision guardrail and construction method thereof Download PDFInfo
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- CN112281654A CN112281654A CN202011220087.5A CN202011220087A CN112281654A CN 112281654 A CN112281654 A CN 112281654A CN 202011220087 A CN202011220087 A CN 202011220087A CN 112281654 A CN112281654 A CN 112281654A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 223
- 239000010959 steel Substances 0.000 title claims abstract description 223
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000011372 high-strength concrete Substances 0.000 claims abstract description 83
- 239000004567 concrete Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000010426 asphalt Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000009417 prefabrication Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000011178 precast concrete Substances 0.000 claims description 2
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 2
- 238000009415 formwork Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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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
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-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
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a semi-assembly type steel skeleton bridge anti-collision guardrail which comprises a steel skeleton structure and a concrete plate structure which are bonded with each other, wherein the steel skeleton structure is a steel bar truss structure consisting of a steel plate I, a positioning steel bar, a steel plate II, an angle steel cross brace, an angle steel longitudinal rod and an angle steel sheet, and the concrete plate structure is composed of a high-strength concrete plate I, a high-strength concrete plate II, a high-strength concrete plate III, a high-strength concrete plate IV and a high-strength concrete plate V; the invention further provides a corresponding construction method of the semi-fabricated type steel framework bridge anti-collision guardrail. On one hand, the high-strength concrete slab is prefabricated in a factory, a formwork erecting process in the traditional construction process is omitted, the construction process is simplified, the construction efficiency is improved, and the high-strength concrete slab is convenient to maintain and replace; on the other hand, because the high-strength concrete plates are adopted on the inner side and the outer side, and the section steel framework is adopted inside, the strength of the anti-collision guardrail is improved, and the service life of the anti-collision guardrail is prolonged.
Description
Technical Field
The invention relates to the technical field of bridges and other engineering construction, in particular to a semi-fabricated type steel skeleton bridge anti-collision guardrail and a construction method thereof.
Background
The anti-collision guardrail is a structure arranged on both sides of a bridge or a road to avoid serious accidents caused by collision of motor vehicles with pedestrians and non-motor vehicles on the bridge or a high-grade road. The rigid guardrail is divided into a rigid guardrail, a semi-rigid guardrail and a flexible guardrail according to the rigidity of the guardrail, wherein the rigid guardrail is in a guardrail form commonly used on municipal bridges and high-grade roads, is in a wall type structure formed by connecting concrete in a certain shape, and absorbs collision energy through climbing and steering of an out-of-control vehicle. The guardrail has the advantages of high rigidity, high strength, good durability and the like.
At present, the construction process of the concrete rigid guardrail commonly used in bridge engineering generally comprises binding guardrail reinforcing steel bars, supporting a template, pouring guardrail concrete and finally stripping and maintaining. The guardrail construction process is complicated, the guardrail needs to be supported by a template, the later maintenance is complex, the cost is higher, and the sustainable development of bridge engineering is not facilitated.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a semi-fabricated type steel skeleton bridge anti-collision guardrail and a construction method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a semi-assembly type steel skeleton bridge anti-collision guardrail mainly comprises an internal steel skeleton structure and a concrete plate structure arranged outside the steel skeleton structure, wherein a plurality of groups of steel skeleton structures arranged at equal intervals form a longitudinal row, two longitudinal rows of steel skeleton structures are symmetrically arranged at the two lateral edges of a main beam bridge floor, any one group of steel skeleton structure comprises two groups of steel plates I embedded on the main beam bridge floor, a steel plate II fixedly connected to the steel plate I through positioning embedded bars, a channel steel upright welded on the upper surface of the steel plate II and an angle steel cross brace connecting the two channel steel uprights,
the top end of the positioning planting bar is provided with a plugging nut, and the bottom end of the positioning planting bar is poured by cement concrete and inserted into a bar planting barrel of the main beam bridge deck;
the cross section of each channel steel stand column is in a U-shaped notch shape, the U-shaped notches of two channel steel stand columns in any group of steel skeleton structures are arranged oppositely, one channel steel stand column close to the outer side is specifically a two-fold line type channel steel formed by welding a vertical channel steel bar and an obliquely arranged channel steel bar, one channel steel stand column close to the inner side is specifically a three-fold line type channel steel formed by sequentially welding a vertical channel steel bar, a channel steel bar with a larger inclination angle and a channel steel bar with a smaller inclination angle, the cross section of each angle steel cross brace is in a right-angle L shape, and two ends of a plurality of angle steel cross braces with different lengths are fixedly connected to the outer side walls of two transversely adjacent channel steel stand columns through bolts respectively;
two longitudinally adjacent channel steel stand columns are connected with each other through an angle steel longitudinal rod, two ends of each angle steel longitudinal rod are respectively welded on the outer side walls of the two longitudinally adjacent channel steel stand columns, the cross section of each angle steel longitudinal rod is also in a right-angle L shape, the middle part of any angle steel longitudinal rod is fixedly connected with an angled steel sheet through a bolt, the cross section of the angled steel sheet is also in a right-angle L shape, the outer surface of one right angle of each angle steel sheet is lapped on the upper surface of the angle steel longitudinal rod through a bolt, and the outer surface of the other right angle of each angle steel sheet is bonded on the inner;
the concrete plate structure comprises a high-strength concrete plate I and a high-strength concrete plate II which are arranged on the outer side of a two-fold line type channel steel, a high-strength concrete plate III, a high-strength concrete plate IV and a high-strength concrete plate V which are arranged on the outer side of a three-fold line type channel steel, the high-strength concrete plate I and the high-strength concrete plate II form a two-fold line type plate structure which is parallel to the two-fold line type channel steel, the high-strength concrete plate III, the high-strength concrete plate IV and the high-strength concrete plate V form a three-fold line type plate structure which is parallel to the three-fold line type channel steel, small rectangular grooves which are connected with angle steel sheets are respectively arranged on the inner side surfaces of the high-strength concrete plate I, the high-strength concrete plate III and the high-strength concrete plate IV, large rectangular grooves which are connected with the two angle steel sheets are respectively arranged on the inner side surfaces of, the outer surface of the T-shaped plate is glued in the corresponding large rectangular groove through high-strength adhesive steel;
concrete is poured and filled in the concrete plate structure in any row, a gap is formed between the concrete plate structure and the steel skeleton structure, and the gap between the concrete plate structure and the steel skeleton structure is also filled with the concrete.
Preferably, a concrete cast-in-place layer and a bridge deck pavement layer are sequentially paved on the bridge deck between two transversely adjacent high-strength concrete plates V from bottom to top.
Preferably, an asphalt filling layer is filled between the steel plate I and the steel plate II to fill the installation gap, so that the overall attractiveness is ensured.
Preferably, the high-strength concrete slab I, the high-strength concrete slab II, the high-strength concrete slab III, the high-strength concrete slab IV and the high-strength concrete slab V are prefabricated by high-strength cement concrete respectively, so that the strength of the semi-fabricated type steel skeleton bridge anti-collision guardrail is ensured.
Preferably, the depths of the large rectangular groove and the small rectangular groove are both 1-3 mm.
The invention also provides a corresponding construction method of the semi-fabricated steel skeleton bridge anti-collision guardrail, which comprises the following steps:
s1, prefabrication of concrete plates: processing the ultrahigh-performance concrete plates in blocks in a prefabrication factory to obtain a high-strength concrete plate I with a small rectangular groove, a high-strength concrete plate III and a high-strength concrete plate IV, obtaining a high-strength concrete plate II with a large rectangular groove and a high-strength concrete plate V, and completing the cementing connection of the angle steel sheet and the concrete plates through high-strength steel-bonding glue;
s2, processing and welding of each component of the steel skeleton structure: the method comprises the following steps that a steel structure processing factory finishes processing of each component, two channel steel stand columns, namely two-fold-line-type channel steel and three-fold-line-type channel steel are prepared by welding U-shaped channel steel bars, L-shaped right-angle steel bars are cut to obtain angle steel cross braces, angle steel longitudinal rods and angle steel sheets, flat plate bars are cut to obtain steel plates I and steel plates II, the channel steel stand columns are welded on the steel plates II, and the channel steel stand columns of each longitudinal column are fixedly connected into a whole through angle steel longitudinal rod welding;
s3, field installation of the steel skeleton structure: two rows of positioning embedded bars and steel plates I are respectively arranged at the edges of two transverse sides of the bridge deck of the main beam and are poured and fixed, the steel plates II are fixedly connected to the steel plates I through the positioning embedded bars, and the angle steel cross braces, the channel steel upright posts, the angle steel longitudinal rods and the angle steel sheets are installed into a whole through bolts;
s4, field installation of precast concrete plates: the high-strength concrete slab I, the high-strength concrete slab II, the high-strength concrete slab III, the high-strength concrete slab IV and the high-strength concrete slab V are respectively bonded with the angle steel sheets at the corresponding positions by adopting high-strength adhesive steel glue for transportation through a lifting appliance;
s5, adjusting line type: filling an asphalt filling layer between the steel plate II and the steel plate I, and leveling to ensure that the inclination angles of the steel skeleton structure and the concrete plate structure meet the requirements;
s6, pouring internal concrete: the two ends of the installed concrete plate structure are provided with the blanking plates, concrete mortar is poured in the concrete plate structure, so that the concrete is completely filled in the cavity inside the concrete plate structure, the semi-assembly type bridge anti-collision guardrail with the internal section steel framework support and the prefabricated concrete plate outside is obtained after maintenance.
Compared with the prior art, the invention has the beneficial effects that:
(1) half assembled shaped steel skeleton bridge anticollision barrier utilizes outside high-strength concrete slab I, outside high-strength concrete slab II, inboard high-strength concrete slab III, inboard high-strength concrete slab IV, inboard high-strength concrete slab V replace the template in the traditional anticollision barrier work progress, have that intensity is high, rigidity is big, advantages such as surfacing, construction process is simple moreover, practices thrift the cost.
(2) The outer side high-strength concrete plate I, the outer side high-strength concrete plate II, the inner side high-strength concrete plate III, the inner side high-strength concrete plate IV and the inner side high-strength concrete plate V are not required to be dismantled after the concrete pouring is finished, the maintenance time is short, and the subsequent procedures of bridge deck pavement and the like can be carried out more quickly.
(3) The anti-collision guardrail framework provided by the invention is different from the traditional concrete anti-collision guardrail, adopts the profile steel framework, and the channel steel upright posts, the angle steel sheets, the angle steel cross braces and the angle steel longitudinal rods are connected in a factory welding or field bolt connection mode, so that the anti-collision guardrail framework has the technical advantages of higher strength, higher rigidity, higher construction speed and the like.
Drawings
FIG. 1 is an internal structure view of a semi-fabricated steel skeleton bridge anti-collision guardrail provided by the invention;
FIG. 2 is a sectional view A-A of the internal structure of the semi-fabricated steel skeleton bridge anti-collision guardrail provided by the invention;
FIG. 3 is a B-B cross-sectional view of the internal structure diagram of the semi-fabricated steel skeleton bridge anti-collision guardrail provided by the invention;
FIG. 4 is a longitudinal sectional view of a steel skeleton structure in the semi-fabricated steel skeleton bridge anti-collision guardrail provided by the invention;
FIG. 5 is a flow chart of a construction method of the semi-fabricated steel skeleton bridge anti-collision guardrail provided by the invention;
wherein: 1, an outer high-strength concrete slab I; 2, outer high-strength concrete slab II; 3, a high-strength concrete slab III on the inner side; 4, inner high-strength concrete slabs IV; 5, a high-strength concrete plate V on the inner side; 6, a steel sheet with an angle; 7, angle steel cross bracing; 8, a longitudinal bar of angle steel; 9, bolts; 10 asphalt filling layer; 11, a channel steel upright post; 12 steel plate I; 13 positioning and planting the steel bars; 14 steel plate II; 15 main beams and 16 concrete cast-in-place layers; 17 bridge deck pavement layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, the embodiment shows a SI-grade F-type crash barrier support with the same strength and a construction process. The outer side high-strength concrete slab I, the outer side high-strength concrete slab II, the inner side high-strength concrete slab III, the inner side high-strength concrete slab IV and the inner side high-strength concrete slab V are prefabricated by a factory, a 2mm deep groove is reserved on the outer side high-strength concrete slab, and a 60 mm-50X 5mm angle steel sheet is adhered to the 2mm groove by using double-component high-strength steel adhesive.
The method comprises the steps of prefabricating a 50 x 5mm channel steel upright, a 30 x 5mm angle steel longitudinal rod, a 30 x 5mm angle steel cross brace, an M6 x 30mm bolt and a 110mm x 70mm steel plate I in a steel structure processing plant, and connecting the channel steel upright, the angle steel longitudinal rod and the steel plate I according to the positions shown in the figure 3 in a welding mode to form the single-side section steel bent.
And the steel plate I, the steel plate II and the positioning embedded bars are used for installing the single-side bent frames on the flange plates of the main beams on site, and the steel bent frames on the inner side and the outer side are connected into the steel section framework through M6 multiplied by 30mm bolts by utilizing angle steel cross braces of 30 multiplied by 5 mm.
The method comprises the steps of connecting high-strength concrete plates prefabricated in factories into a whole by utilizing angle steel sheets of 60mm-50 multiplied by 5mm and angle steel longitudinal rods of 30 multiplied by 5mm through M6 multiplied by 30mm bolts according to the sequence I, II, V, IV and III, and pouring cement concrete inside.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A semi-fabricated type steel skeleton bridge anti-collision guardrail is mainly composed of an internal steel skeleton structure and a concrete plate structure arranged outside the steel skeleton structure, and is characterized in that a plurality of groups of steel skeleton structures arranged at equal intervals form a longitudinal row, the two longitudinal rows are symmetrically arranged at two lateral edges of a bridge deck of a main beam (15), any one group of steel skeleton structure comprises two groups of steel plates I (14) embedded on the bridge deck of the main beam (15), a steel plate II (12) fixedly connected on the steel plate I (14) through a positioning embedded bar (13), a channel steel upright (11) welded on the upper surface of the steel plate II (12) and an angle steel cross brace (7) connecting the two channel steel uprights (11),
the top end of the positioning embedded bar (13) is provided with a plugging nut, and the bottom end of the positioning embedded bar (13) is poured by cement concrete and is inserted into an embedded bar cylinder of the bridge deck of the main beam (15);
the cross section of each channel steel upright (11) is in a U-shaped notch shape, the U-shaped notches of two channel steel uprights (11) in any group of steel skeleton structures are oppositely arranged, one channel steel upright (11) close to the outer side is a two-fold line type channel steel formed by welding a vertical channel steel bar and an obliquely arranged channel steel bar, one channel steel upright (11) close to the inner side is a three-fold line type channel steel formed by sequentially welding a vertical channel steel bar, a channel steel bar with a larger inclination angle and a channel steel bar with a smaller inclination angle, the section of each angle steel cross brace (7) is in a right-angle L shape, and two ends of a plurality of angle steel cross braces (7) with different lengths are fixedly connected to the outer side walls of two transversely adjacent channel steel uprights (11) through bolts (9);
the two longitudinally adjacent channel steel stand columns (11) are connected with each other through an angle steel longitudinal rod (8), two ends of each angle steel longitudinal rod (8) are respectively welded to the outer side walls of the two longitudinally adjacent channel steel stand columns (11), the cross section of each angle steel longitudinal rod (8) is also in a right-angle L shape, the middle part of any angle steel longitudinal rod (8) is fixedly connected with an angle steel sheet (6) through a bolt (9), the cross section of each angle steel sheet (6) is also in a right-angle L shape, a right-angle outer surface of each angle steel sheet (6) is in lap joint with the upper surface of each angle steel longitudinal rod (8) through the bolt (9), and the other right-angle outer surface of each angle steel sheet (6) is bonded to the inner side surface of the concrete plate structure through high;
the concrete slab structure comprises high-strength concrete board I (1) and high-strength concrete board II (2) that set up in the two fold line type channel-section steel outside and high-strength concrete board III (3), high-strength concrete board IV (4) and high-strength concrete board V (5) that set up in the three fold line type channel-section steel outside, high-strength concrete board I (1) and high-strength concrete board II (2) constitute with the parallel two fold line type platelike structure of two fold line type channel-section steel, high-strength concrete board III (3), high-strength concrete board IV (4) and high-strength concrete board V (5) are with the parallel three fold line type platelike structure of three fold line type channel-section steel, the inboard surface of high-strength concrete board I (1), high-strength concrete board III (3) and high-strength concrete board IV (4) is equipped with the little steel sheet recess that splices with an angle concrete (6) respectively, the inboard surface of high-strength concrete board II (2) and high-strength concrete board V (5) is equipped with two angle concrete (6) respectively ) The two angle steel sheets (6) form a T-shaped plate, and the outer surface of the T-shaped plate is bonded in the corresponding large rectangular groove through high-strength adhesive steel;
concrete is poured and filled in the concrete plate structure of any row, a gap is formed between the concrete plate structure and the steel skeleton structure, and the gap between the concrete plate structure and the steel skeleton structure is also filled with concrete.
2. The semi-fabricated type steel skeleton bridge anti-collision guardrail of claim 1, wherein a concrete cast-in-place layer (16) and a bridge pavement layer (17) are sequentially paved on the bridge surface between two transversely adjacent high-strength concrete plates V (5) from bottom to top.
3. The semi-fabricated type steel skeleton bridge anti-collision guardrail of claim 1, wherein an asphalt filling layer (10) is filled between the steel plate I (14) and the steel plate II (12) to fill an installation gap and ensure the overall appearance.
4. The semi-fabricated steel skeleton bridge anti-collision guardrail of claim 1, wherein the high-strength concrete plates I (1), II (2), III (3), IV (4) and V (5) are respectively prefabricated by high-strength cement concrete, so that the strength of the semi-fabricated steel skeleton bridge anti-collision guardrail is ensured.
5. The semi-fabricated steel skeleton bridge anti-collision guardrail of claim 1 or 2, wherein the depths of the large rectangular grooves and the small rectangular grooves are 1-3 mm.
6. The construction method of the semi-fabricated type steel framework bridge anti-collision guardrail is characterized by comprising the following steps of:
s1, prefabrication of concrete plates: processing the ultrahigh-performance concrete slabs in blocks in a prefabrication plant to obtain high-strength concrete slabs I (1), III (3) and IV (4) with small rectangular grooves, obtain high-strength concrete slabs II (2) and V (5) with large rectangular grooves, and cementing and connecting the angle steel sheets (6) and the concrete slabs through high-strength steel cement;
s2, processing and welding of each component of the steel skeleton structure: the method comprises the following steps that a steel structure processing factory finishes processing of each component, two channel steel stand columns (11), namely two-fold line type channel steel and three-fold line type channel steel, are prepared by welding U-shaped channel steel bars, L-shaped right-angle steel bars are cut to obtain an angle steel cross brace (7), an angle steel longitudinal rod (8) and an angle steel sheet (6), flat plate bars are cut to obtain a steel plate I (14) and a steel plate II (12), the channel steel stand columns (11) are welded on the steel plate II (12), and the channel steel stand columns (11) of each longitudinal column are fixedly connected into a whole by welding the angle steel longitudinal rod (;
s3, field installation of the steel skeleton structure: two rows of positioning embedded bars (13) and steel plates I (14) are respectively arranged at the edges of two transverse sides of a bridge deck of a main beam (15) and are poured and fixed, steel plates II (12) are fixedly connected onto the steel plates I (14) through the positioning embedded bars (13), and an angle steel cross brace (7), a channel steel upright post (11), an angle steel longitudinal rod (8) and an angle steel sheet (6) are installed into a whole through bolts (9);
s4, field installation of precast concrete plates: the high-strength concrete slabs I (1), the high-strength concrete slabs II (2), the high-strength concrete slabs III (3), the high-strength concrete slabs IV (4) and the high-strength concrete slabs V (5) are respectively bonded with the angle steel sheets (6) at corresponding positions by adopting high-strength adhesive steel glue for transportation through a lifting appliance;
s5, adjusting line type: filling an asphalt filling layer (10) between the steel plate II (12) and the steel plate I (14), and leveling to ensure that the inclination angles of the steel skeleton structure and the concrete plate structure meet the requirements;
s6, pouring internal concrete: the two ends of the installed concrete plate structure are provided with the blanking plates, concrete mortar is poured in the concrete plate structure, so that the concrete is completely filled in the cavity inside the concrete plate structure, the semi-assembly type bridge anti-collision guardrail with the internal section steel framework support and the prefabricated concrete plate outside is obtained after maintenance.
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| CN113585060A (en) * | 2021-07-07 | 2021-11-02 | 钱璞 | Assembled prestressing force anticollision barrier for bridge |
| CN115478476A (en) * | 2021-05-31 | 2022-12-16 | 上海浦东建筑设计研究院有限公司 | Steel shell anti-collision guardrail and bridge deck integrated combined bridge deck system structure and construction method |
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| CN112281654B (en) | 2024-06-25 |
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