CN211498426U - Outsourcing type joint part structure of folded steel web and concrete bottom plate - Google Patents
Outsourcing type joint part structure of folded steel web and concrete bottom plate Download PDFInfo
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- CN211498426U CN211498426U CN201921187175.2U CN201921187175U CN211498426U CN 211498426 U CN211498426 U CN 211498426U CN 201921187175 U CN201921187175 U CN 201921187175U CN 211498426 U CN211498426 U CN 211498426U
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Abstract
The utility model relates to a roll over outsourcing type joint portion structure of shape steel web and concrete bottom plate, including roll over shape steel web, bottom flange steel sheet, concrete bottom plate, trompil steel sheet, perforation reinforcing bar and welding nail. The lower edge of the folded steel web plate is perpendicularly welded with a flange steel plate, a straight plate section of the folded steel web plate and a lower flange steel plate are perpendicularly welded with a transverse perforated steel plate, longitudinal steel bars penetrate through the perforated steel plate, a slant plate section of the folded steel web plate is provided with welding nails, concrete is wrapped outside the folded steel web plate and the lower flange steel plate, and the concrete bottom plate is connected with the folded steel web plate through the perforated steel plate and the welding nails. This kind of joint portion adopts the trompil steel sheet of putting more energy into, has increased vertical anti-shear bearing capacity, has improved the transverse bending rigidity of web and lower flange steel sheet welding seam department, and seam department concrete top-down pours, has solved the poor problem of traditional edge of a wing type joint portion concrete pouring compactness, avoids the problem of traditional embedding type and the easy infiltration of inserted type joint portion, improves the durability of joint portion.
Description
Technical Field
The utility model belongs to the bridge engineering field, concretely relates to roll over outsourcing type joint portion structure of shape steel web and concrete bottom plate.
Background
The combined folded web bridge adopts the folded steel web to replace the concrete web of the traditional box girder, and utilizes the characteristic of small longitudinal rigidity of the folded steel web, so that the restraint between the top and the bottom plates of the traditional concrete box girder can be removed, the secondary internal force is reduced, the prestress application efficiency is improved, the dead weight of the bridge structure is reduced, and the combined folded web bridge is actively popularized in China in recent years.
In the combined web-folded bridge structure, the folded steel web plates and the concrete plates are generally combined by adopting a shear connector, and the combined part is the most key structure of the bridge, so that the effect of longitudinal bridge shear force and transverse bridge bending moment can be ensured, and simultaneously, all parts of the cross section of the box girder are ensured to form a whole to bear load. After the joint of the folded steel web and the concrete slab is damaged, the overall stress of the structure is seriously influenced, and meanwhile, the repair is extremely difficult, so that the durability of the joint surface is ensured.
The connection mode between the folded steel web and the concrete bottom plate in the combined folded web bridge can be divided into a flange type and an embedded type. The flange-type joint part is folded and the flange steel plate is welded at the lower edge of the steel web plate and is provided with connecting pieces such as angle steel, perforated plates or welding nails, the connecting structure is used more at present, but concrete under the lower flange steel plate is poured reversely, pouring compactness is difficult to guarantee, the connecting piece is in an inverted state, the connecting piece bears certain drawing force, and the stress state is unfavorable. The lower edge of the folded steel web plate of the embedded type joint part is provided with a hole, a reinforcing steel bar runs through the hole, the web plate is directly inserted into the concrete bottom plate, the construction is simpler, the steel-concrete joint surface is easy to separate, a structural crack is easy to occur in the folded steel web plate longitudinal bridge to the fillet weld, waterproof treatment measures must be taken in the construction and later maintenance, and the durability is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, an object of the utility model is to provide a roll over shape steel web and concrete floor joint portion structure in the abdomen bridge is rolled over in combination to overcome traditional joint portion not enough in the aspect of construction process and durability, realize rolling over shape steel web and concrete floor joint portion construction facility, the purpose that the atress is reasonable, the durability is good.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the outer-wrapping type joint structure of the folded steel web and the concrete bottom plate comprises the folded steel web, a lower flange steel plate, the concrete bottom plate, a perforated steel plate, welding nails and perforated steel bars; the lower flange steel plate is perpendicularly welded at the lower edge of the folded steel web plate, the transverse perforated steel plate is perpendicularly welded on the straight plate section of the folded steel web plate and the lower flange steel plate, longitudinal steel bars penetrate through the perforated steel plate, the welding nails are arranged on the inclined plate section of the folded steel web plate, concrete is wrapped outside the folded steel web plate and the lower flange steel plate, and the concrete bottom plate is connected with the folded steel web plate through the perforated steel plate and the welding nails.
The edge line of the outer side of the lower flange steel plate is consistent with the folded shape of the web plate, and the edge of the inner side of the lower flange steel plate extends into the inner side of the box girder for a certain length.
The concrete bottom plate is supported on the lower flange steel plate.
The side edge of the perforated steel plate is vertically welded to the folded steel web plate, and the bottom edge of the perforated steel plate is vertically welded to the lower flange steel plate.
The shape of the perforated steel plate can be rectangular, trapezoidal or L-shaped.
The shape of the open pore steel plate can be circular, long pore shape or notch shape, the reinforcing steel bars need to be penetrated in the pores, and the perforated reinforcing steel bars are connected with the structural reinforcing steel bars of the bottom plate to form the integral reinforcing steel bar framework.
The perforated steel plates are arranged on the inner sides of the folded steel webs in parallel, straight plate sections of the folded steel webs are welded, the opening positions on the perforated steel plates correspond to each other, steel pipes can penetrate through the perforated steel plates conveniently in the transverse direction, the number of the perforated steel plates is two or one along the longitudinal bridge direction, and the number of the perforated steel plates is determined according to the longitudinal shear-resistant bearing capacity.
Roll over shape steel web evagination and interior concave straight board section trompil steel sheet size and trompil quantity different, evagination straight board section trompil steel sheet size is great, and trompil quantity is 4, and interior concave straight board section trompil steel sheet size is less, and trompil quantity is 2.
The bent steel web inclined plate section is provided with welding nail connecting pieces, and the number and arrangement of the welding nails are determined according to the requirements of stress and construction.
The utility model has the advantages that: the longitudinal bridge-direction shearing force is borne by the out-of-plane shearing resistance of the perforated steel plate, so that the longitudinal shearing resistance bearing capacity of the joint part is improved; the perforated steel plate is vertically welded to the folded steel web plate and the lower flange steel plate, so that the transverse bending rigidity of the joint part is increased; the steel web plate and the concrete bottom plate are wrapped by the wrapping type joint part, and concrete can be poured from top to bottom, so that the pouring compactness is ensured, rainwater and the like are prevented from permeating into the steel-concrete joint surface, and the durability of the joint part is improved; the lower flange steel plate is easy to position and fix the folded steel web, and is convenient for the construction of the concrete bottom plate.
Drawings
FIG. 1 is a schematic view of the structure of the outer-wrapped joint of the steel web and the concrete bottom plate according to the embodiment of the present invention.
Fig. 2 is a side view of the structure of the wrapping-type joint of the folded steel web and the concrete bottom plate of the present invention.
In the figure: 1. a folded steel web; 2. a lower flange steel plate; 3. a concrete floor; 4. punching a steel plate; 5. punching a steel bar; 6. and (7) welding nails.
Detailed Description
The invention will be further described with reference to the following examples of embodiments shown in the drawings.
To the present often used edge of a wing type and the not enough of embedding type joint portion in the aspect of construction process and durability, the utility model provides a can improve concrete quality and durability, improve the book shape steel web and the concrete bottom plate outsourcing type joint portion structure of connecting piece atress, figure 1 shows that this outsourcing type joint portion structure overall schematic diagram, figure 2 shows that this outsourcing type joint portion structure side view is.
The utility model relates to a roll over outsourcing type joint portion structure of shape steel web and concrete bottom plate mainly comprises roll over shape steel web 1, bottom flange steel sheet 2, concrete bottom plate 3, trompil steel sheet 4, perforation reinforcing bar 5 and welding nail 6.
As shown in a combined figure 1, a lower flange steel plate 2 is vertically welded on the lower edge of a folded steel web plate 1, the outer edge of the lower flange steel plate 2 is consistent with the lower edge of the folded steel plate 1 in shape, a small amount of the lower flange steel plate extends out of the plane of the folded steel web plate 1, the lower flange steel plate 2 is tightly attached to the lower surface of a concrete bottom plate 3, and the inner edge of the lower flange steel plate extends into a box girder; the lower part of each straight plate section of the folded steel plate 1 is vertically welded with a perforated steel plate 4, the other side of the perforated steel plate is welded on the lower flange steel plate 2, two perforated steel plates 4 are arranged along the longitudinal bridge direction of each straight plate section, and perforated steel bars 5 are required to be arranged in the holes of the perforated steel plates; the perforated steel bars 5 are arranged along the longitudinal bridge direction and are connected with the bottom plate steel bar framework into a whole; welding nails 6 are arranged on the inclined plate section of the folded steel web plate 1 and the lower flange steel plate 2, and the welding nails 6 are arranged perpendicular to the inclined plate section of the folded steel web plate 1 and the lower flange steel plate 2; the concrete bottom plate 3 is wrapped outside the folded steel web plate 1 and the lower flange steel plate 2, and the perforated steel plate 4 and the welding nails 6 which are provided with the perforated steel bars 5 are connected with the concrete bottom plate 3, so that the overall working performance of concrete and steel members is ensured.
In this embodiment, the perforated steel plate 4 is provided in a trapezoidal shape, and may be rectangular or L-shaped in nature. The perforated steel plates 4 are only arranged on the straight plate sections of the folded steel web plates 1, one or two perforated steel plates are arranged in the longitudinal bridge direction, and the time interval for arranging the two perforated steel plates 4 is generally 100 mm-120 mm; the diameter of the opening is generally 50 mm-70 mm, and the diameter of the perforated steel bar 6 is generally 20 mm-28 mm.
The shape of the opening steel plate 4 in this embodiment is circular, and in practice, the shape may be a long hole shape, a round hole shape provided with a notch, or a long hole shape provided with a notch, and the number of openings is determined according to the magnitude of the transverse corner bending moment of the joint portion.
The bent steel web plate 1 inclined plate section and the lower flange steel plate 2 are provided with welding nails 6, so that the steel plates and concrete are well combined; the diameter of the welding nail 6 is generally 19 mm-25 mm, the length is generally 150 mm-200 mm, and the distance between the welding nails 6 is ensured to be larger than 5 times of the diameter of the welding nail.
The lower flange steel plate 2 is vertically welded on the lower edge of the folded steel web plate 1, the lower surface of the lower flange steel plate is flush with the lower surface of the concrete bottom plate, the width of the steel plate is generally 450 mm-600 mm, and the thickness of the steel plate is 16 mm-20 mm.
Therefore, the utility model discloses an adopt outsourcing type joint construction under the book shape steel web and the concrete bottom plate of above-mentioned structure, have better connection performance, the joint connecting piece atress is more reasonable, and concrete placement is convenient, pours the quality in order to guarantee, and the joint durability is good.
The embodiments described above are intended to facilitate one of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should understand that modifications and alterations made without departing from the scope of the present invention are within the protection scope of the present invention.
Claims (6)
1. The utility model provides a roll over outsourcing type joint portion structure of shape steel web and concrete bottom plate, includes shape steel web, lower flange steel sheet, trompil steel sheet, concrete bottom plate, perforation reinforcing bar and welds nail, its characterized in that: the lower edge of the folded steel web plate is vertically welded with a flange steel plate, the side edge of the perforated plate is vertically welded to the folded steel web plate, the bottom edge of the perforated plate is vertically welded to the lower flange steel plate, and the perforated steel plate penetrates through the steel bars; the folded steel web plate and the flange steel plate are connected with the concrete bottom plate through the welding nail connecting piece and the perforated plate connecting piece;
the trompil steel sheet, parallel arrangement are inboard in folding shape steel web, and welding and the straight board section of folding shape steel web, and the opening position on the trompil steel sheet corresponds each other, and the steel pipe of being convenient for transversely runs through.
2. The structure of the outsourcing type combination part of the folded steel web plate and the concrete bottom plate as claimed in claim 1, wherein: the perforated steel plates are welded on the straight plate sections of the folded steel web plates, and the number of the perforated steel plates of a single straight plate section is one or two.
3. The structure of the outsourcing type combination part of the folded steel web plate and the concrete bottom plate as claimed in claim 1, wherein: the shape of the perforated steel plate can be trapezoid, rectangle or L-shaped.
4. The structure of the outsourcing type combination part of the folded steel web plate and the concrete bottom plate as claimed in claim 1, wherein: the trompil of trompil steel sheet can be circular, long hole shape or notch shape, all need run through the reinforcing bar in the hole, and the perforation reinforcing bar links to each other with bottom plate structure reinforcing bar and forms whole steel reinforcement framework.
5. The structure of the outsourcing type combination part of the folded steel web plate and the concrete bottom plate as claimed in claim 1, wherein: the width of the lower flange steel plate is larger than the length of the bottom plate of the perforated plate.
6. The structure of the outsourcing type combination part of the folded steel web plate and the concrete bottom plate as claimed in claim 1, wherein: the concrete bottom plate is supported on the lower flange steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187175.2U CN211498426U (en) | 2019-07-26 | 2019-07-26 | Outsourcing type joint part structure of folded steel web and concrete bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187175.2U CN211498426U (en) | 2019-07-26 | 2019-07-26 | Outsourcing type joint part structure of folded steel web and concrete bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211498426U true CN211498426U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921187175.2U Active CN211498426U (en) | 2019-07-26 | 2019-07-26 | Outsourcing type joint part structure of folded steel web and concrete bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211498426U (en) |
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2019
- 2019-07-26 CN CN201921187175.2U patent/CN211498426U/en active Active
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