CN111206486A - Cross beam connecting structure between corrugated web steel box and concrete composite beam box - Google Patents
Cross beam connecting structure between corrugated web steel box and concrete composite beam box Download PDFInfo
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- CN111206486A CN111206486A CN202010117587.XA CN202010117587A CN111206486A CN 111206486 A CN111206486 A CN 111206486A CN 202010117587 A CN202010117587 A CN 202010117587A CN 111206486 A CN111206486 A CN 111206486A
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
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Abstract
The invention belongs to the technical field of steel-concrete composite structure bridges, and particularly relates to a connecting structure of a beam between a corrugated web steel box and a concrete composite beam box. Including bottom flange, corrugated steel web, shear force nail, case bridge panel and crossbeam makeup board between, the bottom flange is installed in the bottom of corrugated steel web, installs the makeup board at the flat section in corrugated steel web both ends on side for the bolted connection girder predetermines connecting plate, its characterized in that: and the upper end of the corrugated steel web plate is provided with an upper flange, and the upper flange is connected with the inter-box bridge deck plate through a shear nail. The device adopts different upper flange forms to improve the rigidity of the top plate, so that the device can adapt to larger girder intervals, thereby reducing the number of girder boxes and improving the technical and economic benefits.
Description
Technical Field
The invention belongs to the technical field of steel-concrete composite structure bridges, and particularly relates to a connecting structure of a beam between a corrugated web steel box and a concrete composite beam box.
Background
The connecting form of the cross beams between the boxes of the traditional steel-concrete composite structure mostly adopts an I-shaped composite beam or a truss type composite structure, utilizes the stress advantage and simple process of the composite structure, has the characteristics of light weight, high strength, assembly, modularization, convenient and rapid construction and the like, and has remarkable technical and economic benefits when being matched with a steel-concrete main beam.
Along with the increasingly wide application of steel structure bridges, large-span and ultra-wide steel structure bridges are gradually increased, and the traditional inter-box beam connection mode can not be completely suitable for the large-span and ultra-wide combined structure bridges in the form of double main beams or multiple main beams.
The connecting form of the cross beams between the boxes of the traditional steel-concrete composite structure has the following defects: the I-shaped steel beam is connected with the concrete top plate through the shear connector, so that local uneven stress is easily caused, and the concrete top plate is easily cracked at the cross beam; along with the increase of girder case interval, the crossbeam must accomplish bigger roof beam height, and its stability is difficult to guarantee, must lay more ribbed rib or more construction temporary support.
The corrugated web steel box-concrete composite beam is a composite structure form which is applied more in recent years, has obvious application advantages in large-span and ultra-wide bridges, and is necessary to develop a beam connecting structure between the corrugated web steel box and the concrete composite beam in order to adapt to the stress characteristics and appearance style of the beam.
Disclosure of Invention
In order to overcome the defects of the connection form of the cross beam between the boxes of the traditional steel-concrete composite beam, the invention provides a connection structure of the cross beam between the boxes matched with the corrugated web steel box-concrete composite beam.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a crossbeam connection structure between corrugated web steel case-concrete composite beam case, includes bridge deck board 5 and crossbeam makeup board 6 between lower flange 2, corrugated steel web 3, shear force nail 4, case, lower flange 2 is installed in corrugated steel web 3's bottom, installs makeup board 6 in the flat straight section in corrugated steel web 3 side both ends for the bolted connection girder predetermines the connecting plate, upper flange 1 is installed to the upper end of corrugated steel web 3, and upper flange and the bridge deck board 5 between the case pass through shear force nail 4 and are connected.
The upper flange 1 is arranged in four forms of a straight plate structure, a groove-shaped structure, a rectangular structure and an inverted trapezoidal structure.
The straight plate structure is a plane straight plate type upper flange 1, and the upper flange 1 and the lower flange 2 are both straight equal-width steel plates.
The upper flange 1 of the groove-shaped structure is composed of an upper wing plate 1-1, straight web plates 1-2 and upper edge plates 1-3, wherein the straight web plates 1-2 are symmetrically arranged at two ends of the upper wing plate 1-1, the upper edge plates 1-3 are mounted on the straight web plates 1-2, and the upper edge plates 1-3 are connected with an inter-box bridge deck plate 5 through shear nails 4.
The upper wing plate 1-1 and the lower flange plate 2 are straight steel plates with equal width, the ratio of the height of the straight web plate 1-2 to the thickness of the concrete bridge deck plate is 1:1.67, and the ratio of the width of the upper flange plate 1-3 to the width of the upper wing plate 1-1 is 1: 5.
The upper flange 1 of the rectangular structure is composed of rectangular square steel 1-4, micro-expansion concrete 7 is filled in the rectangular square steel 1-4, and the upper end face of the rectangular square steel 1-4 is connected with an inter-box bridge deck 5 through a shear nail 4.
The width of the rectangular square steel 1-4 is the same as that of the lower flange 2, and the ratio of the height to the width of the rectangular square steel 1-4 is 1: 5.
The upper flange 1 of the inverted trapezoidal structure is composed of an inverted trapezoidal structure bottom plate 1-5, an inclined web plate 1-6 and an inverted trapezoidal structure top plate 1-7, micro-expansion concrete 7 is filled in the upper flange 1 of the inverted trapezoidal structure, and the inverted trapezoidal structure top plate 1-7 is connected with an inter-box bridge deck 5 through shear nails 4.
The top plate 1-7 of the inverted trapezoidal structure is as wide as the lower flange 2, and the included angle between the bottom plate 1-5 of the inverted trapezoidal structure and the inclined web plate 1-6 is 120 degrees.
The corrugated steel webs 3 adopt two connection modes of a single layer and a double layer, and micro-expansion concrete 7 is filled between the double layers of the corrugated steel webs 3.
The construction method comprises the steps of welding and forming an upper flange 1, a lower flange 2, a corrugated steel web 3 and shear nails 4 of the inter-box beam in a factory, integrally transporting the assembled inter-box beam to a construction and installation site, determining the actual distance (20 +/- △ mm) between the inter-box beam and a main beam and the opening position of a beam assembling plate 6 according to the actual position of the erected main beam, hoisting the inter-box beam in place at the preset position between the main beams, bolting the inter-box beam and the main beams by using the beam assembling plate 6, and pouring inter-box bridge deck plate concrete 5.
The invention has the beneficial effects that: according to the connecting form of the beam between the corrugated web steel box and the concrete composite beam box, the corrugated web which is in the same form as the main beam is adopted, the upper flange is improved into a groove shape, a rectangular shape and an inverted trapezoidal shape, or a double-layer corrugated web is adopted, and UHPC or micro-expansion concrete is filled in the groove shape, the rectangular shape and the inverted trapezoidal section or between the two layers of corrugated webs to form integral structure stress. The rigidity of the top plate can be improved by adopting different upper flanges, so that the device can adapt to larger girder intervals, thereby reducing the number of girder boxes and improving the technical and economic benefits. The groove-shaped, rectangular and inverted trapezoidal upper flange structures and the concrete top plate are poured into a stressed whole and fixed through the shear connectors, so that the overall working performance of the cross beam between the boxes and the concrete top plate is guaranteed. In addition, the invention adopts the corrugated web as the web of the beam, which can improve the lateral stability and the shearing buckling performance of the large-span beam, and the upper flanges with different forms can improve the integrity of the connection with the main beam, so that the torsional rigidity is increased, and the transverse connection effect is enhanced.
The corrugated web steel box-concrete composite beam inter-box beam connecting structure provided by the invention has the advantages that the corrugated web which is in the same form as the main beam is adopted, the structural form of the bridge web is unified, the construction and the installation are convenient, the integral aesthetic degree can be improved, and compared with the traditional I-shaped or truss type composite inter-box beam connecting form, the corrugated web steel box-concrete composite beam inter-box beam connecting structure is higher in matching degree, higher in adaptability and wide in application prospect.
Drawings
FIG. 1 is a schematic three-dimensional model of a cross-member connection structure between tanks according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view showing a form of connection of cross members between tanks in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view showing a form of connection of cross members between tanks in embodiment 2 of the present invention;
FIG. 4 is a schematic structural view showing a form of connection of cross members between tanks in embodiment 3 of the present invention;
FIG. 5 is a schematic structural view showing a form of connection of cross members between tanks in embodiment 4 of the present invention;
FIG. 6 is a schematic structural view showing a form of connection of cross members between tanks in embodiment 5 of the present invention;
shown in the figure: the composite structural component comprises an upper flange 1, an upper wing plate 1-1, a straight web plate 1-2, an upper flange plate 1-3, rectangular square steel 1-4, an inverted trapezoidal structure bottom plate 1-5, an inclined web plate 1-6, an inverted trapezoidal structure top plate 1-7, a lower flange 2, a corrugated steel web plate 3, shear nails 4, an inter-box bridge deck plate 5, a cross beam assembly plate 6 and micro-expansion concrete 7.
Detailed Description
The technical scheme of the invention is further explained by specific embodiments in the following with the accompanying drawings:
example 1
The invention provides a connection form of a beam between corrugated web steel boxes and a concrete composite beam box, which comprises the following steps of: the shear-force-type steel box comprises an upper flange 1, a lower flange 2, shear nails 4 arranged on the upper flange, an inter-box bridge deck 5, a corrugated steel web plate 3 and a beam assembling plate 6 connected with the corrugated steel web plate through bolts.
In the embodiment, the upper flange 1 and the lower flange 2 are flat and equal-width steel plates, and the corrugated steel web 3 is welded with the upper flange 1 at the top end and the lower flange 2 at the bottom end, as shown in fig. 1 and 2. The beam length between the boxes of this embodiment is 5330mm, the height is 800mm, the width of the upper flange plate is 500mm, and the width of the lower flange 2 is the same as that of the upper flange 1. The wave amplitude height of the adopted corrugated steel web is 200mm, the ratio of the wave amplitude height to the width of the lower flange 2 is 1:2.5, and the width center of the corrugated steel web 3 and the widths of the upper flange plate and the lower flange plate are ensured to be on the same central line. The thickness of the corrugated steel web 3 adopted in the embodiment is 16mm, the thickness of the upper flange 1 is 16mm, and the thickness of the lower flange 2 is 16 mm. In the embodiment, the connection between the cross beam between the reinforced boxes and the concrete top plate 5 is strengthened, three rows of phi 19 multiplied by 150 shear nails 4 are symmetrically distributed on the upper flange 1 and are connected with the cast-in-place concrete bridge deck 5 between the reinforced boxes, the shear nails 5 are fastening bolts, and are densely distributed in the length direction of the upper flange 1. The same web form with the girder, wave form steel web 3 promptly is adopted to this embodiment, utilizes its shear resistance can be good, the good advantage of stability, and the cross beam need not to set up again between the case adds the rib can satisfy the crossbeam atress requirement.
The construction method of the embodiment comprises the steps of welding and forming an upper flange 1, a lower flange 2, a corrugated steel web 3 and shear nails 4 of the inter-box beam in a factory, integrally transporting the assembled inter-box beam to a construction and installation site, determining the actual distance (20 +/- △ mm) between the inter-box beam and a main beam and the opening position of a beam assembling plate 6 according to the actual position of the erected main beam, hoisting the inter-box beam in place at the preset position between the main beams, bolting the inter-box beam and the main beams by using the beam assembling plate 6, and pouring inter-box bridge deck plate concrete 5.
Example 2
The invention provides a connection form of a beam between corrugated web steel boxes and a concrete composite beam box, which is an improved form of embodiment 1, and the length, the height and the form of a corrugated steel web 3 of the beam between boxes are the same as those of embodiment 1. The cross beam connection form between the boxes comprises: the composite structural beam comprises an upper flange 1 and a lower flange 2 which are composed of an upper flange plate 1-1, a straight web plate 1-2 and an upper flange plate 1-3, shear nails 4 arranged on the upper flange 1, an inter-box bridge deck plate 5, a corrugated steel web plate 3 and a beam assembling plate 6 which is connected with the corrugated steel web plate 3 through bolts.
The upper flange 1 of the present embodiment is a steel plate splicing groove-shaped structure, that is, it is composed of an upper wing plate 1-1, straight webs 1-2 symmetrically arranged at two ends of the upper wing plate 1-1, and upper flange plates 1-3 symmetrically welded with the straight webs 1-2 at two ends at 90 degrees, see fig. 3. In the embodiment, an upper wing plate 1-1 and a lower flange 2 of a groove-shaped structure are flat and equal-width steel plates, the width of the steel plates is 500mm, in order to enhance the connection between a cross beam and a bridge deck and increase the rigidity of the cross beam, straight web plates 1-2 are symmetrically welded at two ends of the upper wing plate 1-1, the ratio of the height of the straight web plates 1-2 to the thickness of a concrete bridge deck is 1:1.67, upper edge plates 1-3 are symmetrically and horizontally welded at the top ends of the straight web plates 1-2 at two sides, and the ratio of the width of the upper edge plates 1-3 to the width of the upper wing plate 1-. Three rows of shear nails 4 are symmetrically arranged in the groove-shaped upper flange structure and are connected with a cast-in-place concrete bridge deck 5 between boxes, and the shear nails 4 are fastening bolts and are densely arranged in the length direction of the upper flange plate. The difference between the embodiment and the embodiment 1 is that a groove-shaped upper flange structure is adopted, the transverse connection between the cross beam between the boxes and the main beams on two sides is strengthened at the concrete top plate, and the torsional rigidity of the concrete top plate is strengthened.
The construction method of this example is the same as that of example 1.
Example 3
The invention provides a connecting form of a beam between corrugated web steel boxes and a concrete composite beam box, which is an improved form of embodiment 1, and the length, height and web form of the beam between boxes are the same as those of embodiment 1. The cross beam connection form between the boxes comprises: the composite structural beam comprises an upper flange 1, a lower flange 2, shear nails 4 arranged on the upper flange 1, an inter-box bridge deck 5, a corrugated steel web 3 and a beam assembling plate 6, wherein the upper flange 1 and the lower flange 2 are jointly formed by rectangular square steel 1-4 and UHPC (ultra high Performance concrete) or micro-expansion concrete 7 filled in the square steel, and the beam assembling plate 6 is connected with the corrugated steel web 3 through bolts.
The upper flange 1 of this embodiment is a rectangular square steel structure filled with UHPC or micro-expansion concrete, that is, it is made of rectangular square steel 1-4, UHPC or micro-expansion concrete 7, see fig. 4. In the embodiment, the upper flange is of a closed rectangular square steel structure, the wall thickness of the square steel is 16mm, the width of the section of the square steel is 500mm, the width of the section of the square steel is the same as that of the lower flange 2, the height of the square steel is 100mm, and the ratio of the height to the width of the square steel is 1: 5. The micro-expansion concrete filled in the upper flange 1 in this embodiment is obtained by adding a certain amount of expansion agent into ordinary concrete, so that the concrete can expand to a certain extent under the action of the expansion agent during hydration, thereby compensating for the shrinkage of the concrete and achieving the purpose of improving the performance of the concrete. The UHPC filled in the upper flange 1 in the embodiment is an ultrahigh-strength cement-based material with high strength, high toughness and low porosity, and the UHPC has very high strength, excellent toughness, excellent durability, good overall economy and good application prospect in the municipal and traffic fields. The micro-expansion concrete filled in the upper flange 1 in this embodiment is obtained by adding a certain amount of expansion agent into ordinary concrete, so that the concrete can expand to a certain extent under the action of the expansion agent during hydration, thereby compensating for the shrinkage of the concrete and achieving the purpose of improving the performance of the concrete. Three rows of shear nails 4 are symmetrically distributed on the upper surface of the square steel in the embodiment and are connected with a cast-in-place concrete bridge deck 5 between boxes, and the shear nails 4 are fastening bolts and are densely distributed in the length direction of the square steel. In the embodiment, the upper flange of the beam is improved into a rectangular square steel structure filled with UHPC or micro-expansion concrete, so that the rigidity of the top plate of the beam between the boxes is increased, the bearing capacity is higher, and the material performance can be utilized to a greater extent.
The construction method of this example is the same as that of example 1.
Example 4
The invention provides a connecting form of a beam between corrugated web steel boxes and a concrete composite beam box, which is an improved form of embodiment 1, and the length, height and web form of the beam between boxes are the same as those of embodiment 1. The cross beam connection form between the boxes comprises: the composite structural beam comprises an upper flange 1, a lower flange 2, shear nails 4 arranged on an inverted trapezoidal structure, an inter-box bridge deck 5, a corrugated steel web 3 and a beam assembling plate 6, wherein the upper flange 1 and the lower flange 2 are jointly composed of inverted trapezoidal structure bottom plates 1-5, inclined web plates 1-6, inverted trapezoidal structure top plates 1-7 and UHPC or micro-expansion concrete 7 filled in the inverted trapezoidal structure, and the beam assembling plate 6 is connected with the corrugated steel web 3 through bolts.
The upper flange 1 of the present embodiment is an inverted trapezoid structure filled with UHPC or micro-expansive concrete structure, that is, composed of an inverted trapezoid structure bottom plate 1-5, an inclined web plate 1-6, an inverted trapezoid structure top plate 1-7, and filled UHPC or micro-expansive concrete 7, as shown in fig. 5. In the embodiment, the width of the top plate 1-7 of the inverted trapezoidal structure is 500mm, the top plate is as wide as the lower flange 2, the included angle between the bottom plate 1-5 of the inverted trapezoidal structure and the left oblique web plate is 120 degrees, the right oblique web plates are symmetrically arranged by using the center line of the web plate, the height of the structure is controlled to be 150mm, and the width of the bottom plate of the inverted trapezoidal structure is determined immediately. In this example, the thickness of the inverted trapezoidal upper flange 1 is 16mm, and the upper flange 1 is filled with the UHPC or the micro-expansive concrete described in example 3. Three rows of shear nails 4 are symmetrically distributed on the upper surface of the inverted trapezoidal structure top plate 1-7 of the inverted trapezoidal top flange 1 in the embodiment and are connected with the cast-in-place concrete bridge deck 5 between the boxes, and the shear nails 4 are fastening bolts and are densely distributed in the length direction of the inverted trapezoidal structure top plate 1-7. In the embodiment, the UHPC or micro-expansion concrete structure is filled in the upper flange of the inverted trapezoid structure, so that the rigidity of the top plate of the cross beam between the boxes is further increased, the height of the corrugated web is reduced under the condition that the height of the cross beam is not changed, the stability and the shear buckling strength of the cross beam are further improved, and the ultra-high-strength composite beam is suitable for transverse connection between the boxes with larger main beam intervals.
The construction method of this example is the same as that of example 1.
Example 5
The invention provides a connecting form of a cross beam between a corrugated web steel box and a concrete composite beam box, the embodiment is a double-layer corrugated web connecting form, UHPC or micro-expansion concrete 7 described in the embodiment 3 is filled between double layers of corrugated webs, and the connecting form of the cross beam can be suitable for end cross beams. The other parts of this embodiment, including the length and height of the cross member between the tanks, are the same as those of embodiment 1. The cross beam connection form between the boxes comprises: the composite plate comprises an upper flange 1, a lower flange 2, two corrugated steel webs 3 which are symmetrically arranged at intervals, shear nails 4 which are arranged at equal intervals on an upper wing plate, micro-expansion concrete filled between the two corrugated steel webs and between the two corrugated steel webs 3 of the upper wing plate and the lower wing plate, and a cross beam assembling plate 6 which is connected with the corrugated steel webs 3 through bolts.
The corrugated steel web 3 of this embodiment is for two webs that are separated by a certain interval with interval central symmetry arrangement, upper flange 1 is the straight steel sheet that extends to two corrugated web top outsides, lower flange 2 is the straight steel sheet that extends to the corrugated web bottom outside, and with the equal width that is parallel of upper flange 1, both sides corrugated web 3 forms a case room structure with upper flange 1 and lower flange 2 jointly, four rows of shear nails are laid equally to case room inside upper flange downside, lower flange upside, left side web right side and right side web left side at an equal interval or symmetry, UHPC or the little expansion micro-expansion concrete 7 of pouring in the case room, nine rows of shear nails are laid equally to upper side book of upper flange 1, see FIG. 6. In the embodiment, the distance between the centers of the two corrugated webs is 800mm, the thicknesses of the upper flange and the lower flange are both 20mm, and the ratio of the distance between the center lines of the two corrugated webs to the height of the cross beam is 1:1. The connecting form of the cross beams between the boxes in the embodiment has high rigidity and high shear strength, but the self weight of the cross beams is large, and the cross beams between the boxes can be applied to end cross beams or middle cross beams of a continuous system.
The construction method comprises the steps of welding an upper flange 1, a lower flange 2, two corrugated steel webs 3 and shear nails 4 of the inter-box beam in a factory to form a box-shaped structure, reserving concrete pouring holes on the upper flange 1, integrally transporting the assembled inter-box beam to a construction and installation site, determining the actual distance (20 +/- △ mm) between the inter-box beam and a main beam and the hole opening position of a beam assembling plate 6 according to the actual position of the erected main beam, hoisting the inter-box beam in place at the preset position between the main beams, bolting the box-shaped beam structure and the main beams by using the beam assembling plate 6, pouring micro-expansion concrete 7 into the formed box-shaped beam, and pouring inter-box bridge deck plate concrete 5.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a crossbeam connection structure between corrugated web steel case-concrete composite beam case, includes bottom flange, corrugated steel web, shear force nail, case bridge panel and crossbeam makeup board, the bottom flange is installed in the bottom of corrugated steel web, installs the makeup board at the flat straight section in corrugated steel web both ends on the side for the bolted connection girder predetermines the connecting plate, its characterized in that: and the upper end of the corrugated steel web plate is provided with an upper flange, and the upper flange is connected with the inter-box bridge deck plate through a shear nail.
2. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 1, wherein: the upper flange is in four forms of a straight plate structure, a groove-shaped structure, a rectangular structure and an inverted trapezoidal structure.
3. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 2, wherein: the straight plate structure is a plane straight plate type upper flange, and the upper flange and the lower flange are both straight equal-width steel plates.
4. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 2, wherein: the upper flange of the groove-shaped structure is composed of an upper flange plate, straight web plates and an upper flange plate, wherein the straight web plates are symmetrically arranged at two ends of the upper flange plate, the upper flange plate is installed on the straight web plates, and the upper flange plate is connected with the bridge deck between the boxes through shear nails.
5. The structure for connecting the cross beams between the corrugated web steel box and the concrete composite beam box as claimed in claim 4, wherein: the upper wing plate and the lower flange plate are flat and equal-width steel plates, the ratio of the height of the straight web plate to the thickness of the micro-expansion concrete bridge deck plate is 1:1.67, and the ratio of the width of the upper flange plate to the width of the upper wing plate is 1: 5.
6. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 2, wherein: the upper flange of the rectangular structure is composed of rectangular square steel, micro-expansion concrete is filled in the rectangular square steel, and the upper end face of the rectangular square steel is connected with the inter-box bridge deck through shear nails.
7. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 6, wherein: the rectangular square steel and the lower flange are the same in width, and the ratio of the height to the width of the rectangular square steel is 1: 5.
8. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 2, wherein: the upper flange of the inverted trapezoidal structure is composed of an inverted trapezoidal structure bottom plate, an inclined web plate and an inverted trapezoidal structure top plate, micro-expansion concrete is filled in the upper flange of the inverted trapezoidal structure, and the inverted trapezoidal structure top plate is connected with the box bridge deck through shear nails.
9. The structure of claim 8, wherein the connecting structure comprises: the inverted trapezoidal structure top plate and the lower flange are the same in width, and the included angle between the inverted trapezoidal structure bottom plate and the inclined web plate is 120 degrees.
10. The connecting structure of the cross beam between the corrugated web steel box and the concrete composite beam box as claimed in claim 1, wherein: the corrugated steel webs adopt two connection forms of a single layer and a double layer, and micro-expansion concrete is filled between the double layers of corrugated steel webs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117587.XA CN111206486A (en) | 2020-02-25 | 2020-02-25 | Cross beam connecting structure between corrugated web steel box and concrete composite beam box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010117587.XA CN111206486A (en) | 2020-02-25 | 2020-02-25 | Cross beam connecting structure between corrugated web steel box and concrete composite beam box |
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| CN111206486A true CN111206486A (en) | 2020-05-29 |
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| CN202010117587.XA Pending CN111206486A (en) | 2020-02-25 | 2020-02-25 | Cross beam connecting structure between corrugated web steel box and concrete composite beam box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356012A (en) * | 2021-06-25 | 2021-09-07 | 青海省交通建设管理有限公司 | Assembly type bridge structure in tunnel and construction method thereof |
| CN114086458A (en) * | 2021-12-27 | 2022-02-25 | 福州大学 | Steel-concrete combined box girder structure with wave-shaped upper flange beam and construction method |
-
2020
- 2020-02-25 CN CN202010117587.XA patent/CN111206486A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356012A (en) * | 2021-06-25 | 2021-09-07 | 青海省交通建设管理有限公司 | Assembly type bridge structure in tunnel and construction method thereof |
| CN114086458A (en) * | 2021-12-27 | 2022-02-25 | 福州大学 | Steel-concrete combined box girder structure with wave-shaped upper flange beam and construction method |
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