CN216380251U - U-shaped steel-solid waste concrete composite beam with composite structure - Google Patents
U-shaped steel-solid waste concrete composite beam with composite structure Download PDFInfo
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- CN216380251U CN216380251U CN202122514127.3U CN202122514127U CN216380251U CN 216380251 U CN216380251 U CN 216380251U CN 202122514127 U CN202122514127 U CN 202122514127U CN 216380251 U CN216380251 U CN 216380251U
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Abstract
The utility model provides a U-shaped steel-solid waste concrete composite beam with a composite structure, which is characterized in that a plurality of H-shaped steels and longitudinal angle steels are arranged on a U-shaped steel bottom panel to enhance the tensile resistance of the composite beam, so that the bending resistance bearing capacity of the composite beam is increased, and a shear-resistant truss is arranged on a U-shaped steel side vertical plate to enhance the shear-resistant bearing capacity of the composite beam; the bonding performance and the lifting resistance of the steel plate and the concrete interface are enhanced by arranging the tie frame, the shear truss and the tie bolts, and meanwhile, the connection between the steel plate and the internal concrete is also enhanced; the tie frame and the tie bolts improve the restraint effect of the steel plates so that the internal concrete is in a restraint state, and the steel plates are arranged on the outer sides of the tensioned positions of the concrete so as to improve the anti-cracking capacity of the concrete; local reinforcement is carried out on the unfavorable part of the joint of the steel materials where stress concentration may occur; the solid waste concrete is adopted to relieve the problem of shrinkage deformation of mass concrete so as to promote the engineering application of the solid waste concrete.
Description
Technical Field
The utility model relates to a U-shaped steel-solid waste concrete composite beam with a composite structure, and belongs to the technical field of steel-concrete composite structures.
Background
With the complexity of a structural system, higher requirements are provided for the span and the bearing capacity of a beam member, such as some large public buildings, large-span bridges, large nuclear power station projects and the like, the traditional reinforced concrete beam cannot meet the requirement of engineering design due to the overlarge cross section, and therefore, a steel-concrete combined beam with better mechanical property is adopted. As a novel combined structural member, the externally-coated U-shaped steel-concrete combined beam is a T-shaped combined beam formed by pouring concrete in an open box beam and connecting the beams through connecting pieces such as angle steel and the like, has the characteristics of high bearing capacity, high rigidity, good anti-seismic performance and the like, can meet the requirement of large span in engineering design, and simultaneously provides higher requirements on the bending resistance bearing capacity, the shearing resistance bearing capacity, the anti-cracking capacity, the connecting degree and the like of the U-shaped steel-concrete combined beam with larger cross section size.
On the other hand, the resource utilization of the building solid waste and the industrial solid waste produces a large amount of green materials such as recycled aggregate, steel slag, nickel slag, magnesium slag and the like, the solid waste concrete doped with the solid waste resource materials is reasonably used, and the development target of 'accelerating the construction of a waste material recycling system' in the target suggestion of China is met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems of increasing the bending resistance bearing capacity and the shearing resistance bearing capacity of a U-shaped steel-solid waste concrete composite beam, enhancing the anti-cracking capacity and the connection degree of each part and reducing the shrinkage deformation of large-volume concrete in the composite beam, and provides the U-shaped steel-solid waste concrete composite beam with a composite structure, wherein a plurality of H-shaped steels are arranged on a bottom U-shaped steel plate to enhance the tensile capacity of the bottom surface, trusses are arranged on side U-shaped steel plates to enhance the shearing resistance of the U-shaped steel plate, a shearing resistance frame is arranged between the two side vertical plates to enhance the constraint capacity of the U-shaped steel plate, a top plate is arranged on the top surface of the concrete to enhance the anti-cracking capacity and the tensile capacity of a negative bending moment area, and the U-shaped steel and the concrete are reliably connected through a plurality of tension bolts, the rigidity and the cooperative working performance of each part of the composite beam are enhanced through the above structural measures, and the solid waste concrete doped with waste resource materials is adopted in the U-shaped steel, the self-curing effect of the recycled aggregate or the micro-expansion effect of industrial solid wastes such as steel slag, nickel slag, magnesium slag and the like are utilized to reduce the shrinkage deformation of the mass concrete and further improve the combination effect of the combination beam.
The U-shaped steel-solid waste concrete composite beam with the composite structure comprises U-shaped steel, a plurality of H-shaped steel, a plurality of shear trusses, a plurality of tie frames, a plurality of L-shaped stiffening plates, a top panel, a plurality of tie bolts, a plurality of steel bars and solid waste concrete, wherein the U-shaped steel comprises a bottom panel, two side vertical plates and two flange plates;
a plurality of H shaped steel vertically set up in the bottom surface board upside of U-shaped steel, the truss that shears is located the side riser inboard of U-shaped steel, and the drawknot frame welds perpendicularly on bottom surface board and side riser, and L shape stiffening plate welds respectively in the flange board outside of side riser and U-shaped steel, and the top panel is connected with the flange board through a plurality of drawing bolts, and inside places a plurality of reinforcing bars and closely knit solid useless concrete of packing.
Preferably, the width of the bottom panel is not less than 0.8m, the height of the side vertical plate is not less than 1.6m, and the width of the flange plate is not less than 0.5 m.
Preferably, the shear truss comprises longitudinal angle steel, a plurality of inclined angle steel and longitudinal channel steel, wherein the longitudinal angle steel and the longitudinal channel steel are parallel to each other, and the plurality of inclined angle steel are arranged between the longitudinal angle steel and the longitudinal channel steel.
Preferably, the drawknot frame comprises a horizontal rib, two vertical ribs and a plurality of drawknot angle steels, wherein the horizontal rib and the drawknot angle steels are parallel to each other and are vertically connected with the two vertical ribs to form a rectangular frame.
Preferably, the joint of the longitudinal angle steel and the horizontal rib keeps the longitudinal angle steel continuous, the joint of the H-shaped steel and the horizontal rib keeps the H-shaped steel continuous, and the horizontal rib is broken into a plurality of sections.
Preferably, the included angle between the obliquely arranged angle steel and the longitudinal angle steel is 35-55 degrees.
Preferably, the height of the inclined longitudinal channel steel is not less than 4 times of the thickness of the web plate of the inclined longitudinal channel steel, the height of the horizontal rib is not less than 4 times of the thickness of the horizontal rib, and the height of the vertical rib is not less than 4 times of the thickness of the vertical rib.
Preferably, the spacing of the tie angle steel is gradually increased from top to bottom, and the minimum spacing does not exceed 250 mm.
Preferably, the L-shaped stiffening plates and the pulling and tying frame are located on the same plane, each L-shaped stiffening plate comprises an L-shaped plate and a stiffening plate, the thickness of each L-shaped plate is not less than 0.5 time of that of the side vertical plate, and the thickness of each stiffening plate is not less than 1.5 times of that of each L-shaped plate.
Preferably, the tie bolts comprise nuts and screws, the diameter of each screw is not less than 10mm, and the distribution of the tie bolts on each side is not less than 2 rows.
The composite structure is arranged in the traditional U-shaped steel-concrete composite beam to increase the rigidity and the bearing capacity of the composite beam, the connection degree of the U-shaped steel and the concrete is enhanced to enhance the integrity and the common working performance of the composite beam, the constraint effect of the U-shaped steel is enhanced to enable the concrete to be in a constraint state to improve the stress performance of the concrete, and the shrinkage deformation of the concrete is reduced under the condition of not remarkably reducing the mechanical performance by adopting the solid waste concrete doped with the solid waste resource material. In summary, the composite beam has the following advantages:
(1) the rigidity and the bearing capacity of the composite beam are greatly increased. The U-shaped steel bottom plate is provided with the plurality of H-shaped steels and the plurality of longitudinal angle steels to enhance the tensile strength, the upper area has larger pressure resistance due to the T-shaped section, the bending resistance bearing capacity of the composite beam is increased, the U-shaped steel side plates are provided with the shear resistant truss to enhance the shear resistance bearing capacity, the rigidity of the steel plates is locally enhanced by each construction measure, and the overall rigidity of the composite beam is also enhanced.
(2) Effectively enhancing the connection degree and the integrity of each part. Set up the horizontal rib on the U-shaped steel bottom surface board, set up vertical rib and shear truss on the side riser, set up the stay bolt on the flange board in order to strengthen the cohering-sliding property at steel sheet and concrete interface, H shaped steel on the U-shaped steel bottom surface board, angle steel and longitudinal channel steel put to one side on the side riser, stay bolt and the inside stay angle steel on the flange board all play the effect of anti lifting, stay frame and stay bolt are when closely tying each steel sheet, also strengthened being connected of steel sheet and inside concrete, the wholeness of composite beam has been promoted greatly.
(3) The combination effect is fully exerted. The drawknot angle steel is gradually encrypted from bottom to top, so that the drawknot frame tightly draws the two side vertical plates, the drawknot bolts tightly draw the flange plates and the top panel, the constraint effect of the steel plate is improved, the internal concrete is in a three-phase compression state, the compression resistance of the concrete is fully exerted, and the steel plate is arranged at the pulled position of the concrete to improve the anti-cracking capacity of the concrete.
(4) Locally reinforcing the site where stress concentration may occur. The steel plate comprises a bottom plate, a side vertical plate, a flange plate, a side vertical plate, a steel plate and a steel plate, wherein the steel plate, the steel plate and the steel plate are connected through the steel plate, the steel plate and the steel plate are connected through the steel plate, the steel plate is connected with the steel plate, and the steel plate is connected with the steel plate through the steel plate.
(5) And the problem of shrinkage deformation of mass concrete is relieved. The concrete is in a three-side closed state, the loss of internal moisture is difficult, and only autogenous shrinkage basically occurs, and solid waste concrete doped with solid waste materials such as recycled aggregate, steel slag, nickel slag, magnesium slag and the like is adopted, for the recycled aggregate, water is absorbed firstly and then released in the hydration process of the concrete, so that the effect of slowly releasing free water is achieved, the shrinkage problem of large-volume concrete can be relieved, and for the doped industrial solid waste, the adverse effect caused by the shrinkage of the large-volume concrete can also be relieved due to the micro-expansion effect after water absorption.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In the drawings:
FIG. 1 is a perspective partial schematic view of a U-shaped steel-solid waste concrete composite beam having a composite construction according to the present invention;
FIG. 2 is a schematic plan view of the U-shaped steel-solid waste concrete composite beam having a composite construction;
FIG. 3 illustrates two possible arrangements of the shear truss, wherein (a) is one arrangement of the shear truss and (b) is another arrangement of the shear truss;
FIG. 4 is three possible arrangements of the drawknot frames, (a) one arrangement of drawknot frames, and (b) another arrangement of drawknot frames; (c) a third arrangement of a drawknot frame;
FIG. 5 is two possible arrangements of the top panel, wherein (a) is one arrangement of the top panel and (b) is another arrangement of the top panel;
description of the figure code: 1-bottom panel; 2-side vertical plates; 3-a flange plate; 4-H section steel; 5-longitudinal angle steel; 6-obliquely arranging angle steel; 7-longitudinal channel steel; 8-horizontal ribs; 9-vertical ribs; 10-tie angle steel; 11-L-shaped plate; 12-a stiffening plate; 13-a top panel; 14-a nut; 15-screw rod; 16-reinforcing steel bars; 17-waste concrete fixation.
Detailed Description
The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 5. The composite-constructed U-shaped steel-solid waste concrete composite beam comprises U-shaped steel, a plurality of H-shaped steels 4, a plurality of shear trusses, a plurality of tie frames, a plurality of L-shaped stiffening plates, a top panel 13, a plurality of tie bolts, a plurality of reinforcing steel bars 16 and solid waste concrete 17, wherein the U-shaped steel comprises a bottom panel 1, two side vertical plates 2 and two flange plates 3;
a plurality of H shaped steel 4 vertically set up in the 1 upside of the bottom surface board of U-shaped steel, the truss that shears is located the 2 inboards of the side riser board of U-shaped steel, the drawknot frame welds perpendicularly on bottom surface board 1 and side riser board 2, L shape stiffening plate welds respectively in the 3 outsides of the flange board of side riser board 2 and U-shaped steel, top panel 13 is connected with flange board 3 through a plurality of drawing bolts, inside places a plurality of reinforcing bars 16 and closely knit solid useless concrete 17 of packing.
The width of the bottom panel 1 is not less than 0.8m, the height of the side vertical panel 2 is not less than 1.6m, and the width of the flange plate 3 is not less than 0.5 m.
The shear truss comprises longitudinal angle steel 5, a plurality of inclined angle steel 6 and longitudinal channel steel 7, wherein the longitudinal angle steel 5 and the longitudinal channel steel 7 are parallel to each other, and the inclined angle steel 6 are arranged between the longitudinal angle steel 5 and the longitudinal channel steel 7.
The drawknot frame comprises horizontal ribs 8, two vertical ribs 9 and a plurality of drawknot angle steels 10, wherein the horizontal ribs 8 and the drawknot angle steels 10 are parallel to each other and are vertically connected with the two vertical ribs 9 to form a rectangular frame.
The joint of the longitudinal angle steel 5 and the horizontal rib 8 keeps the continuity of the longitudinal angle steel 5, the joint of the H-shaped steel 4 and the horizontal rib 8 keeps the continuity of the H-shaped steel 4, and the horizontal rib 8 is cut into a plurality of sections.
The included angle between the inclined angle steel 6 and the longitudinal angle steel 5 is 35-55 degrees.
The height of the inclined longitudinal channel steel 7 is not less than 4 times of the thickness of a web plate of the inclined longitudinal channel steel, the height of the horizontal rib 8 is not less than 4 times of the thickness of the horizontal rib, and the height of the vertical rib 9 is not less than 4 times of the thickness of the vertical rib.
The distance between the drawknot angle steels 10 is gradually increased from top to bottom, and the minimum distance is not more than 250 mm.
The L-shaped stiffening plate and the pulling frame are positioned on the same plane, the L-shaped stiffening plate comprises an L-shaped plate 11 and a stiffening plate 12, two right-angle edges of the stiffening plate 12 are vertically welded on the inner side of the L-shaped plate 11, and the L-shaped plate 11 is respectively welded on the outer surface of the joint of the side vertical plate 2 and the flange plate 3. The thickness of the L-shaped plate 11 is not less than 0.5 times of that of the side vertical plate 2, and the thickness of the stiffening plate 12 is not less than 1.5 times of that of the L-shaped plate 11.
The tie bolts comprise nuts 14 and screws 15, the diameter of each screw 15 is not less than 10mm, and the distribution of the tie bolts on each side is not less than 2 rows.
The strength of steel used by the bottom panel 1, the side vertical plates 2, the flange plates 3, the H-shaped steel 4, the longitudinal angle steel 5, the inclined angle steel 6, the longitudinal channel steel 7, the horizontal ribs 8, the vertical ribs 9, the tie angle steel 10, the L-shaped plates 11, the stiffening plates 12, the top panel 13, the nuts 14 and the screws 15 is not lower than Q355.
The top panel 13 is provided with pouring holes and air holes, and can be continuously arranged or only arranged at a hogging moment section near the support.
The solid waste concrete 17 is recycled concrete, steel slag concrete, nickel slag concrete, magnesium slag concrete or other high-performance concrete, and the strength grade is not lower than C60.
The anti-bending composite beam has the advantages that the U-shaped steel bottom plate is provided with the plurality of H-shaped steels and the plurality of longitudinal angle steels to enhance the tensile capacity of the U-shaped steel bottom plate, so that the anti-bending bearing capacity of the composite beam is increased, and the U-shaped steel side vertical plates are provided with the anti-shearing trusses to enhance the anti-shearing bearing capacity of the U-shaped steel side vertical plates; the horizontal ribs, the vertical ribs, the shear resisting trusses and the tie bolts are arranged to enhance the bonding performance of the steel plate and the concrete interface, and the H-shaped steel, the inclined angle steel, the longitudinal channel steel, the tie bolts and the tie angle steel are arranged to enhance the anti-lifting capacity and enhance the connection between the steel plate and the internal concrete; the tie frame and the tie bolts improve the restraint effect of the steel plates so that the internal concrete is in a three-phase compression state, and the steel plates are arranged at the pulled positions of the concrete so as to improve the anti-cracking capacity of the concrete; local reinforcement is carried out on the unfavorable part of the joint of the steel materials where stress concentration may occur; and the problem of shrinkage deformation of mass concrete is relieved.
The construction method of the U-shaped steel-solid waste concrete composite beam with the composite structure comprises the following steps:
(1) prefabrication work: the flange plate 3 is provided with bolt holes, the top panel 13 is provided with bolt holes, pouring holes and air holes, 1 bottom panel 1, 2 side vertical plates 2 and 2 flange plates 3 are welded into U-shaped steel, the method comprises the following steps that longitudinal angle steel 5 is welded on the inner side of the joint of a bottom panel 1 and a side vertical panel 2, a plurality of L-shaped stiffening plates are welded on the joint of the side vertical panel 2 and a flange plate 3, a plurality of H-shaped steel 4 are longitudinally welded on the upper side of the bottom panel 1, a plurality of horizontal ribs 8 are welded on the upper side of the bottom panel 1 in a manner of being vertical to the H-shaped steel, a plurality of vertical ribs 9 are welded on the inner side of the side vertical panel 2 in a manner of being vertical to the horizontal ribs 8, a plurality of inclined angle steel 6 are welded on the inner side of the side vertical panel 2 in a cross manner, two ends of a plurality of tie angle steel 10 are respectively welded with two vertical ribs 9, a plurality of longitudinal channel steel 7 are longitudinally welded on the upper portion of the inner side vertical panel 2, two nuts 14 on the lower portion of a tie bolt are screwed down to fix a screw rod 15 and the flange plate 3, and the work is prefabricated in a factory;
(2) and (3) field construction: positioning the composite beam at a correct position, completing a supporting project and a template project of adjacent concrete slabs, fixing reinforcing steel bars 16 according to design and binding to form a reinforcing steel bar net, tightening two nuts 14 at the upper part of a tie bolt to fix a top panel 13 and the tie bolt, and finally, densely pouring waste concrete 17 through a pouring hole and curing to the designed strength.
The utility model provides a U-shaped steel-solid waste concrete composite beam with a composite structure, which is characterized in that the composite structure is arranged in the traditional U-shaped steel-concrete composite beam to increase the rigidity and the bearing capacity of the composite beam, the connection degree of U-shaped steel and concrete is enhanced to enhance the integrity and the common working performance of the composite beam, the constraint effect of U-shaped steel is enhanced to enable the concrete to be in a constraint state to improve the stress performance of the concrete, and the solid waste concrete doped with solid waste resource materials is adopted to reduce the shrinkage deformation of the concrete under the condition of not remarkably reducing the mechanical performance, thereby playing an exemplary role in popularization and use of the solid waste concrete.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A U-shaped steel-solid waste concrete composite beam with a composite structure is characterized by comprising U-shaped steel, a plurality of H-shaped steels (4), a plurality of shear resisting trusses, a plurality of tie frames, a plurality of L-shaped stiffening plates, a top panel (13), a plurality of tie bolts, a plurality of steel bars (16) and solid waste concrete (17), wherein the U-shaped steel comprises a bottom panel (1), two side panels (2) and two flange plates (3);
a plurality of H shaped steel (4) vertically set up in bottom surface board (1) upside of U-shaped steel, the truss that shears is located the side riser (2) inboard of U-shaped steel, the drawknot frame welds perpendicularly on bottom surface board (1) and side riser (2), L shape stiffening plate welds respectively in the flange board (3) outside of side riser (2) and U-shaped steel, top panel (13) are connected with flange board (3) through a plurality of drawing bolts, inside places a plurality of reinforcing bars (16) and closely knit solid useless concrete (17) of packing.
2. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, wherein the bottom panel (1) width is not less than 0.8m, the side standing panel (2) height is not less than 1.6m, and the flange panel (3) width is not less than 0.5 m.
3. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, wherein the shear truss comprises a longitudinal angle steel (5), a plurality of angle steels (6) disposed at an angle, and a longitudinal channel steel (7), the longitudinal angle steel (5) and the longitudinal channel steel (7) being parallel to each other with the plurality of angle steels (6) disposed therebetween.
4. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, characterized in that the tie frame comprises a horizontal rib (8), two vertical ribs (9) and a plurality of tie angles (10), the horizontal rib (8) and the plurality of tie angles (10) are parallel to each other and are vertically connected with the two vertical ribs (9) to form a rectangular frame.
5. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, characterized in that the junction of the longitudinal angle steel (5) and the horizontal rib (8) keeps the longitudinal angle steel (5) continuous, the junction of the H-shaped steel (4) and the horizontal rib (8) keeps the H-shaped steel (4) continuous, and the horizontal rib (8) is broken into several sections.
6. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, characterized in that the angle between the oblique angle steel (6) and the longitudinal angle steel (5) is 35-55 °.
7. A U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, characterized in that the height of the diagonal longitudinal channel steel (7) is not less than 4 times its web thickness, the height of the horizontal rib (8) is not less than 4 times its thickness, and the height of the vertical rib (9) is not less than 4 times its thickness.
8. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, characterized in that said tie angles (10) are gradually spaced from top to bottom with a minimum spacing not exceeding 250 mm.
9. The U-shaped steel-solid waste concrete composite beam with the composite structure according to claim 1, characterized in that the L-shaped stiffening plates and the tie frame are in the same plane, the L-shaped stiffening plates comprise L-shaped plates (11) and stiffening plates (12), the L-shaped plates (11) are respectively welded on the outer surfaces of the joints of the side vertical plates (2) and the flange plates (3), two right-angle sides of the stiffening plates (12) are vertically welded on the inner sides of the L-shaped plates (11), the thickness of the L-shaped plates (11) is not less than 0.5 times of that of the side vertical plates (2), and the thickness of the stiffening plates (12) is not less than 1.5 times of that of the L-shaped plates (11).
10. The U-shaped steel-solid waste concrete composite beam with composite construction according to claim 1, wherein said tie bolts comprise nuts (14) and threaded rods (15), said threaded rods (15) having a diameter of not less than 10mm, and the distribution of tie bolts on each side is not less than 2 rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122514127.3U CN216380251U (en) | 2021-10-19 | 2021-10-19 | U-shaped steel-solid waste concrete composite beam with composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122514127.3U CN216380251U (en) | 2021-10-19 | 2021-10-19 | U-shaped steel-solid waste concrete composite beam with composite structure |
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| CN216380251U true CN216380251U (en) | 2022-04-26 |
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| CN202122514127.3U Active CN216380251U (en) | 2021-10-19 | 2021-10-19 | U-shaped steel-solid waste concrete composite beam with composite structure |
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