CN209836794U - Low-height groove-shaped steel-concrete composite beam - Google Patents
Low-height groove-shaped steel-concrete composite beam Download PDFInfo
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- CN209836794U CN209836794U CN201822125988.0U CN201822125988U CN209836794U CN 209836794 U CN209836794 U CN 209836794U CN 201822125988 U CN201822125988 U CN 201822125988U CN 209836794 U CN209836794 U CN 209836794U
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Abstract
The present disclosure provides a low-height channel type steel-concrete composite beam, including: the number of the T-shaped steel beams is at least 2, and steel flanges of the adjacent 2T-shaped steel beams are connected with each other; the bridge deck is arranged above the T-shaped steel beam and is vertically connected with a web plate of the T-shaped steel beam; wherein, web one end of T shaped steel roof beam is the profile of tooth structure, and the profile of tooth structure is located the decking inside.
Description
Technical Field
The utility model relates to a beam bridge field especially relates to a low-height cell type reinforced concrete composite beam.
Background
The steel-concrete composite beam is a beam bridge formed by combining an exposed steel beam or steel truss beam with a reinforced concrete bridge deck through a connecting piece (shear key). A common steel-concrete composite beam is formed by combining an i-shaped steel beam and a reinforced concrete slab. For bridges with larger span and wider bridge decks, steel-concrete composite beams with box-shaped sections are mostly adopted. The steel-concrete composite beam with the steel trussed beam as the steel main beam is similar to the steel-concrete composite beam with I-shaped and box-shaped steel beams in principle, but has larger spanning capability and integral rigidity in structural performance than the former two types, and is suitable for medium-span and large-span highway bridges and medium-span herringbone bridges. The connecting pieces (shear keys) are generally divided into welded shear nails, perforated plates, section steel connecting pieces and the like, and are key pieces for combining steel beams and reinforced concrete plates together to cooperatively bear force. For the manufacture and installation of the steel-concrete composite beam, the scheme that an I-shaped steel beam is manufactured in a factory and transported to a site for installation is generally adopted, the method that a small-sized box-shaped steel beam is manufactured in a segmental mode along the bridge direction and transported to the site for installation is adopted, and the scheme that a wider multi-chamber steel box beam is manufactured in a split mode along the bridge direction and transported to the bridge site for in-situ splicing and integration is adopted. The reinforced concrete bridge deck slab can adopt a method of in-situ pouring and curing after the construction of a formwork, also can adopt a prefabricated plate, and can be combined with a steel beam through a shear key after the post-pouring belt or notch concrete is poured and cured after the bridge site is installed.
For the sections of various composite beams, the top flange of the steel beam at the midspan region under the pure bending condition is positioned at the compression region, so that the characteristics of steel materials cannot be fully exerted, and the concrete structure is not adopted in all aspects of economy. The connecting piece is used as a key stressed component which enables the steel beam and the concrete bridge deck to be combined into a whole, and needs to be welded with the steel beam, and the direct quality of a welding seam between the connecting piece and the steel beam influences the stress and safety of the structure no matter the shear nail or the section steel connecting piece is welded, so a special welding process evaluation test needs to be carried out, a certain proportion of destructive tests need to be carried out after welding, for example, the shear nail welding process evaluation and a post-welding bending (the welding seam is bent by 30 degrees in a hammering mode and has no cracks), certain manpower and material resources are consumed, and the construction progress can be prolonged.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above technical problems, the present disclosure provides a low-height channel type steel-concrete composite beam having sufficient bearing capacity and spanning capacity, which is suitable for the construction of small-span highway bridges, pedestrian bridges and urban pedestrian overpasses.
According to an aspect of the present disclosure, a low-height channel type steel-concrete composite girder includes:
the number of the T-shaped steel beams is at least 2, and steel flanges of the adjacent 2T-shaped steel beams are connected with each other; and
the bridge deck is arranged above the T-shaped steel beam and is vertically connected with a web plate of the T-shaped steel beam;
wherein, web one end of T shaped steel roof beam is the profile of tooth structure, and the profile of tooth structure is located the decking inside.
In accordance with at least one embodiment of the present disclosure,
the T-shaped steel beam is obtained by cutting a web plate of the H-shaped steel from a center line by a tooth-shaped line;
and cutting the web plate of the H-shaped steel from the center line by a tooth-shaped line to obtain 2T-shaped steel beams, wherein one end of the web plate of each T-shaped steel beam is of a tooth-shaped structure.
In accordance with at least one embodiment of the present disclosure,
and the steel flanges of the adjacent 2T-shaped steel beams are connected by single-face double-V groove butt welding.
In accordance with at least one embodiment of the present disclosure,
a diaphragm plate is arranged between every two adjacent T-shaped steel beams;
the number of the diaphragm plates is at least 1;
the bottom of the diaphragm plate is connected with the steel flanges of the adjacent 2T-shaped steel beams, and two sides of the diaphragm plate are respectively connected with the webs of the adjacent 2T-shaped steel beams;
the adjacent 2T shaped steel roof beams to and the horizontal diaphragm between the adjacent 2T shaped steel roof beams forms the channel section steel roof beam.
In accordance with at least one embodiment of the present disclosure,
the T-shaped steel beam and the diaphragm plate are made of non-weather-resistant steel materials;
sanding and cleaning the surface of the T-shaped steel beam in contact with the bridge deck and the surface of the diaphragm plate in contact with the bridge deck;
the surfaces of the T-shaped steel beams which are not in contact with the bridge deck and the surfaces of the diaphragm plates which are not in contact with the bridge deck are subjected to sanding, cleaning and painting treatment.
In accordance with at least one embodiment of the present disclosure,
the T-shaped steel beam and the diaphragm plate are made of weather-resistant steel materials;
sanding and cleaning the surfaces of the T-shaped steel beams and the surfaces of the diaphragm plates;
and after the T-shaped steel beam, the transverse partition plate and the bridge deck are assembled and installed, the water spraying and drying treatment is repeated for many times.
In accordance with at least one embodiment of the present disclosure,
the bridge deck is a reinforced concrete bridge deck;
the reinforcing steel bars of the bridge deck are transversely fixed on the channel steel beams in the bridge direction.
According to at least one embodiment of the present disclosure, a method of manufacturing a bridge deck includes:
binding steel bars to prepare a steel bar cage;
mounting a bottom die of the bridge deck on the basis of the channel steel beam;
hoisting and positioning the reinforcement cage, and fixing the reinforcement transverse bridge on the channel steel beam; and
and pouring concrete based on the reinforcement cage and the basement membrane to form the reinforced concrete bridge deck.
In accordance with at least one embodiment of the present disclosure,
and cutting the web plate of the H-shaped steel from the center line in a uniform tooth-shaped line in a plasma cutting mode to obtain 2T-shaped steel beams, wherein one end of the web plate of each T-shaped steel beam is in a uniformly-distributed tooth-shaped structure.
In accordance with at least one embodiment of the present disclosure,
the low-height groove type steel-concrete composite beam is a segmented prefabricated member.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic view of a construction of a low-height channel type steel-concrete composite girder according to at least one embodiment of the present disclosure.
Fig. 2 is a partially cross-sectional schematic view of a low-height channel type steel-concrete composite girder according to at least one embodiment of the present disclosure.
Figure 3 is a schematic view of a T-section steel beam process according to at least one embodiment of the present disclosure.
Fig. 4 is a schematic structural view of a channel steel beam according to at least one embodiment of the present disclosure.
Fig. 5 is a schematic view of a T-section steel beam steel flange welding mode according to at least one embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The invention provides a low-height groove-shaped steel-concrete composite beam with enough bearing capacity and spanning capacity, which can be conveniently and quickly prefabricated into a low-building-height steel-concrete composite beam suitable for small-span road bridges, pedestrian bridges and urban street-crossing pedestrian overpasses.
In an optional embodiment of the disclosure, the low-height channel type steel-concrete composite beam can be a factory prefabricated member, and can be prefabricated in sections according to actual needs, and the prefabricated beam is hoisted and transported to a construction site to be installed on site. The low-height groove type steel-concrete composite beam can be welded into a groove type by adopting a plurality of T-shaped steel beams with tooth-shaped webs, and the edges of steel flanges of the adjacent 2T-shaped steel beams are connected with each other. The uniformly distributed tooth-shaped structures protruding from the web plate are used as connecting pieces to be combined with the concrete bridge deck. Can set up the cross slab between 2 adjacent T shaped steel roof beams, play and support the location and strengthen the effect of whole stability.
Specifically, as shown in fig. 1, the low-height channel type steel-concrete composite beam comprises a T-shaped steel beam 1, a diaphragm plate 2 and a bridge deck 3. Preferably, the number of the T-shaped steel beams 1 is 2, and one end of the web of each T-shaped steel beam 1 is in a uniformly arranged tooth-shaped structure, as shown in fig. 2. After the T-shaped steel beam 1, the diaphragm plate 2 and the bridge deck plate 3 are assembled, the tooth-shaped structure on the web plate is directly combined with the bridge deck plate 3, namely after the T-shaped steel beam 1, the diaphragm plate 2 and the bridge deck plate 3 are assembled, the tooth-shaped structure on the web plate is positioned inside the bridge deck plate 3. The tooth-shaped structure on the web replaces a shear key and other welding connecting pieces, and the T-shaped steel beam 1 is connected with the bridge deck 3 through the tooth-shaped structure, so that the welding procedures in the construction process can be reduced to a certain extent. Can set up horizontal diaphragm 2 between 2 adjacent T shaped steel roof beams 1, according to the length difference of each section of low height cell type steel-concrete composite beam, the quantity of horizontal diaphragm 2 can set up more than 1, for example 2. The adjacent 2T-shaped steel beams 1 and the diaphragm plates 2 between the two form the channel steel beam together. The channel steel beams are arranged along the bridge direction. The bridge deck 3 can be made of reinforced concrete materials, and the bridge deck 3 is transversely arranged above the channel steel beams in the bridge direction and is vertically connected with the webs of the 2T-shaped steel beams 1.
In an alternative embodiment of the present disclosure, the method for preparing the T-section steel beam 1 includes the steps of: the method comprises the following steps of selecting H-shaped steel 4 with proper height for blanking, cutting a web plate of the H-shaped steel 4 from a center line by a tooth-shaped line, for example, cutting the web plate of the H-shaped steel 4 from the center line by a uniform tooth-shaped line in a plasma cutting mode to obtain 2T-shaped steel beams 1, wherein one end of the web plate of each T-shaped steel beam 1 is in a uniformly distributed tooth-shaped structure, and the tooth shapes are staggered with each other, so that the height requirement of combination of the steel beams and a concrete bridge deck 3 can be met, and the waste of steel is avoided.
In an optional embodiment of the present disclosure, two T-shaped steel beams 1 with tooth-shaped webs are welded together to serve as a support structure of the low-height channel type steel-concrete composite beam, and a transverse partition plate 2 can be added between the two T-shaped steel beams 1 to support and position, so as to enhance the overall stability of the composite beam. Preferably, as shown in fig. 4, two diaphragm plates 2 are arranged between two adjacent T-shaped steel beams 1, the height of each diaphragm plate 2 can be reasonably set according to actual needs, the bottom of each diaphragm plate 2 is connected with the steel flanges of the adjacent 2T-shaped steel beams 1 which are assembled and welded together, and the two sides of each diaphragm plate 2 are respectively connected with the webs of the adjacent 2T-shaped steel beams 1. Adjacent 2T shaped steel roof beams 1 to and diaphragm 2 between the two can be assembled and welded into the channel steel roof beam jointly. Preferably, as shown in fig. 5, the steel flanges of the two T-shaped steel beams 1 are connected by a single-sided double-V groove butt weld. The diaphragm plate 2 and the T-shaped steel beam 1 can also be connected in a welding mode.
In an alternative embodiment of the present disclosure, the preparation method of the bridge deck 3 comprises the following steps: firstly, binding steel bars to prepare a steel bar cage; then, mounting a bottom die of the bridge deck on the basis of the channel steel beam; hoisting and positioning the reinforcement cage, and fixing the reinforcement transverse bridge above the channel steel beam in the axial direction, specifically, fixing the reinforcement transverse bridge above the tooth-shaped structure of the channel steel beam and between the teeth of the tooth-shaped structure; and pouring concrete based on the limitation of the reinforcement cage and the basement membrane to prepare the formed reinforced concrete bridge deck 3. And after the bridge deck 3 is molded, maintaining the bridge deck for a certain period of time according to engineering requirements, and demolding after the maintenance is finished.
In an alternative embodiment of the present disclosure, the channel beams (i.e., the T-shaped steel beam 1 and the diaphragm 2) may be made of non-weather-resistant steel. After the channel steel beam is welded and checked to be qualified, and is combined with the concrete bridge deck 3 to be installed, the exposed surface part of the channel steel beam can be subjected to sanding, cleaning and painting treatment. The surfaces of the part of the channel steel beam (namely the tooth-shaped structure part of the T-shaped steel beam) connected with the interior of the concrete bridge deck 3 and the surfaces of the part of the diaphragm plates 2 contacted with the bridge deck 3 can be only sanded and cleaned in advance, and protective measures are taken on the part before other parts are painted to prevent paint pollution.
In an alternative embodiment of the present disclosure, the channel steel beam may be made of a coating-free weather-resistant steel material. And after the channel steel beam is welded and checked to be qualified, sanding and cleaning are carried out, and then the channel steel beam and the bridge deck 3 are assembled and installed. Or after being combined and installed with the concrete bridge deck 3, the exposed surface part of the channel steel beam is sanded and cleaned. Finally, the channel beams and the decking 3 are sprayed with water and dried a number of times, for example, for at least 3 cycles per day for at least 60 days.
The low-height groove-shaped steel-concrete composite beam can adopt ordinary H-shaped steel for blanking and cutting to form two T-shaped steel beams with tooth-shaped structural webs, the T-shaped steel beams can be directly combined with a concrete bridge deck, welding connecting pieces are omitted, welding procedures are reduced, a steel flange in a compression area is reduced, and materials are saved. The concrete bridge has the advantages that the required equipment is simple, the material loss is low, the concrete bridge deck and the welded channel steel beam are combined into the low-height concrete beam, the concrete beam can be prefabricated in a factory in a segmented mode, the prefabrication process is simple, the concrete beam is hoisted and transported to a construction site after being formed into the beam, the concrete beam is installed on site, and the concrete beam has high practicability and operability aiming at the urban bridge needing rapid construction, such as a small-span highway bridge or a street-crossing pedestrian bridge and other steel-concrete combined beam bridges with low building height.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A low-height groove type steel-concrete composite beam is characterized by comprising:
the number of the T-shaped steel beams is at least 2, and steel flanges of the adjacent 2T-shaped steel beams are connected with each other; and
the bridge deck is arranged above the T-shaped steel beam and is vertically connected with a web plate of the T-shaped steel beam;
one end of a web plate of the T-shaped steel beam is of a tooth-shaped structure, and the tooth-shaped structure is located inside the bridge deck.
2. The steel-concrete composite beam according to claim 1,
the T-shaped steel beam is obtained by cutting a web plate of the H-shaped steel from a center line in a tooth-shaped line;
and cutting a web plate of the H-shaped steel from a central line by a tooth-shaped line to obtain 2T-shaped steel beams, wherein one end of the web plate of each T-shaped steel beam is of a tooth-shaped structure.
3. The steel-concrete composite beam according to claim 1 or 2,
and the steel flanges of the adjacent 2T-shaped steel beams are connected by single-face double-V groove butt welding.
4. The steel-concrete composite beam according to claim 3,
a diaphragm plate is arranged between every two adjacent T-shaped steel beams;
the number of the diaphragm plates is at least 1;
the bottom of the diaphragm plate is connected with steel flanges of the adjacent 2T-shaped steel beams, and two sides of the diaphragm plate are respectively connected with webs of the adjacent 2T-shaped steel beams;
the adjacent 2T-shaped steel beams and the transverse partition plates between the adjacent 2T-shaped steel beams form a channel-shaped steel beam.
5. The steel-concrete composite beam according to claim 4,
the T-shaped steel beam and the diaphragm plate are made of non-weather-resistant steel materials;
sanding and cleaning the surface of the T-shaped steel beam in contact with the bridge deck and the surface of the diaphragm plate in contact with the bridge deck;
and sanding, cleaning and painting the surfaces of the T-shaped steel beams without contacting the bridge deck and the surfaces of the diaphragm plates without contacting the bridge deck.
6. The steel-concrete composite beam according to claim 4,
the T-shaped steel beam and the diaphragm plate are made of weather-resistant steel materials;
sanding and cleaning the surface of the T-shaped steel beam and the surface of the diaphragm plate;
and after the T-shaped steel beam, the diaphragm plate and the bridge deck are assembled and installed, water spraying and drying treatment are repeated for many times.
7. The steel-concrete composite beam according to claim 5 or 6,
the bridge deck is a reinforced concrete bridge deck;
and the reinforcing steel bars of the bridge deck are fixed on the channel steel beams in the transverse bridge direction.
8. The steel-concrete composite beam according to claim 7, wherein the preparation method of the bridge deck comprises:
binding steel bars to prepare a steel bar cage;
installing a bottom die of the bridge deck on the basis of the channel steel beam;
hoisting and positioning the reinforcement cage, and fixing the reinforcement transverse bridge on the channel steel beam; and
and pouring concrete based on the reinforcement cage and the basement membrane to form the reinforced concrete bridge deck.
9. The steel-concrete composite beam according to claim 2,
and cutting the web plate of the H-shaped steel from the center line in a uniform tooth-shaped line in a plasma cutting mode to obtain 2T-shaped steel beams, wherein one end of the web plate of each T-shaped steel beam is in a uniformly distributed tooth-shaped structure.
10. The steel-concrete composite beam according to claim 9,
the low-height groove type steel-concrete composite beam is a segmented prefabricated member.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822125988.0U CN209836794U (en) | 2018-12-18 | 2018-12-18 | Low-height groove-shaped steel-concrete composite beam |
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| CN201822125988.0U CN209836794U (en) | 2018-12-18 | 2018-12-18 | Low-height groove-shaped steel-concrete composite beam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109537453A (en) * | 2018-12-18 | 2019-03-29 | 中交公路规划设计院有限公司 | Low clearance groove profile steel reinforced concrete combination beam |
| CN112049008A (en) * | 2020-09-21 | 2020-12-08 | 湖南工学院 | Low-height groove-shaped steel-concrete composite beam and manufacturing method thereof |
| CN115106730A (en) * | 2022-08-08 | 2022-09-27 | 聊城产研创新发展有限公司 | Manufacturing method of welding embedded groove |
-
2018
- 2018-12-18 CN CN201822125988.0U patent/CN209836794U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109537453A (en) * | 2018-12-18 | 2019-03-29 | 中交公路规划设计院有限公司 | Low clearance groove profile steel reinforced concrete combination beam |
| CN112049008A (en) * | 2020-09-21 | 2020-12-08 | 湖南工学院 | Low-height groove-shaped steel-concrete composite beam and manufacturing method thereof |
| CN115106730A (en) * | 2022-08-08 | 2022-09-27 | 聊城产研创新发展有限公司 | Manufacturing method of welding embedded groove |
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