CN115613444A - Assembled corrugated steel web-UHPC composite beam - Google Patents
Assembled corrugated steel web-UHPC composite beam Download PDFInfo
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- CN115613444A CN115613444A CN202211316226.3A CN202211316226A CN115613444A CN 115613444 A CN115613444 A CN 115613444A CN 202211316226 A CN202211316226 A CN 202211316226A CN 115613444 A CN115613444 A CN 115613444A
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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
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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
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
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Abstract
The invention provides an assembled corrugated steel web-UHPC (ultra high performance concrete) composite beam, which comprises an UHPC (ultra high performance concrete) plate, a steel beam and a bolt connecting piece, wherein the UHPC plate is arranged on the steel beam; the UHPC plate is provided with a notch along the length direction; the steel beam comprises an upper flange steel plate, a corrugated steel web plate and a lower flange steel plate; the UHPC plate is arranged on the top surface of the upper flange steel plate, the upper flange steel plate is provided with a connecting hole along the central axis direction of the steel beam, a notch on the UHPC plate corresponds to the connecting hole on the upper flange steel plate in position, and a cast-in-place groove is formed between the inner surface of the notch and the top surface of the upper flange steel plate; the bolt connecting piece is fixedly connected with the upper flange steel plate through the connecting hole; the bolt connecting piece comprises a screw, a nut, a steel gasket and a round hollow sleeve; the anchoring end of the screw rod is arranged in a cast-in-situ groove above the connecting hole, and the cast-in-situ groove is filled with pouring materials. The invention realizes the detachable replacement of the combined beam component; the performance of the concrete slab is improved; the buckling stability of the steel beam web is enhanced, the construction process of the steel-concrete composite beam is simplified, and the construction speed can be improved.
Description
Technical Field
The invention relates to the technical field of constructional engineering or bridge engineering, in particular to an assembled corrugated steel web-UHPC (ultra high performance concrete) composite beam.
Background
The steel-concrete composite beam fully utilizes the compression resistance and tensile strength of the concrete and is widely applied to the field of buildings and bridge structures in recent years due to the excellent stress performance, construction performance and good comprehensive benefit. There are several problems, however:
(1) The combined utility of traditional steel-concrete composite beam concrete pterygoid lamina and girder steel is realized mostly through the connecting piece (weld nail connecting piece, trompil steel sheet connecting piece, shaped steel connecting piece etc.) of welding on the girder steel, and this makes the composite beam component can't (or be difficult) to change it after taking place to damage, has shortened the life of composite beam, and the composite beam is after life, dismantling and subsequent material recovery of structure also need a large amount of cutting work, and this is work intensive. In the process, not only a large amount of resources are consumed, but also a large amount of carbon emission is generated to cause environmental pollution.
(2) The traditional steel-concrete composite beam uses a common concrete slab, has the defects of great self weight, low strength, poor durability and the like, and is easy to lose efficacy under the combined action of load and environment. In addition, the common concrete is easy to damage and deteriorate under the action of adverse environment and traffic load, so that the strength and the structural safety are reduced, the later maintenance and repair cost of a building or a bridge is increased, and the further development of the composite beam is limited.
(3) The steel beam in the traditional steel-concrete composite beam generally adopts a flat web I-shaped steel beam, and the steel web has poor stability and is easy to buckle under the condition that the web is higher.
Therefore, there is a need in the art to develop a fabricated corrugated steel web-UHPC composite girder to solve the above problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an assembled corrugated steel web-UHPC composite beam aiming at the defects of the traditional steel-concrete composite beam, so as to realize the detachable replacement of a steel beam and a concrete slab in the composite beam; the performance of the concrete slab is improved, the buckling stability of a steel beam web is enhanced, the construction process of the steel-concrete composite beam is simplified, and the construction efficiency is improved.
In order to achieve the purpose, the invention adopts the technical scheme that: an assembled corrugated steel web-UHPC composite beam comprises an UHPC plate, a steel beam and a bolt connecting piece; the UHPC plate is provided with a notch along the length direction;
the steel beam comprises an upper flange steel plate, a corrugated steel web and a lower flange steel plate, and the upper flange steel plate, the corrugated steel web and the lower flange steel plate are connected through welding to form a corrugated steel web steel beam;
the top surface of the upper flange steel plate is provided with the UHPC plate, the upper flange steel plate is provided with a connecting hole along the central axis direction of the steel beam, a notch on the UHPC plate corresponds to the connecting hole on the upper flange steel plate in position, and a cast-in-place groove is formed between the inner surface of the notch and the top surface of the upper flange steel plate;
the bolt connecting piece is fixedly connected with the upper flange steel plate through corresponding connecting holes;
the bolt connecting piece comprises a screw rod and a nut; the screw comprises a first screw section, a second screw section and a third screw section from top to bottom in sequence; the third screw section penetrates through the connecting hole and is fixedly connected with the nut, the second screw section is arranged in the connecting hole, the first screw section is arranged in a cast-in-place groove above the connecting hole, and a pouring material is filled in the cast-in-place groove.
The assembled corrugated steel web-UHPC composite beam is formed by assembling and constructing an UHPC plate and a corrugated steel web steel beam; the UHPC plate has high ductility, so that the UHPC plate can deform in cooperation with the corrugated steel web steel beam, the cracking of the composite beam can be delayed, the good durability of the UHPC plate can reduce the maintenance cost of the composite beam, and the service life of the composite beam is prolonged; the buckling stability of the corrugated steel web is good, and stiffening ribs do not need to be arranged, so that the construction process of the steel beam can be simplified, and the construction efficiency is improved; when the composite beam is assembled and installed, firstly, the UHPC plate is placed on the top surface of the steel beam upper flange steel plate, the notch on the UHPC plate corresponds to the position of the connecting hole on the upper flange steel plate, then the bolt connecting piece is fixedly connected with the upper flange steel plate through the corresponding connecting hole, and after the bolt connecting piece is completely installed, filling materials are poured in the cast-in-place groove, so that the construction of assembling the corrugated steel web plate-UHPC composite beam is completed; if the composite beam component needs to be replaced, the nut of the bolt connecting piece is unscrewed from the bottom of the upper flange steel plate, and then the composite beam component can be detached and replaced. Therefore, the assembled corrugated steel web-UHPC composite beam can realize the disassembly and replacement of the steel beam and the concrete slab in the composite beam; improving the performance of the concrete slab; the buckling stability of the steel beam web plate is enhanced, the construction process of the steel beam is simplified, and the construction efficiency is improved.
Further, the connecting hole comprises an upper inverted circular truncated cone section and a lower cylindrical section, and the second screw rod section comprises an upper inverted circular truncated cone section and a lower cylindrical section; the outer surface of the second screw rod section is tightly attached to the inner surface of the connecting hole. From this, can increase the anti-shear area between screw rod and the last flange steel sheet, the atress of screw rod and last flange steel sheet junction is more even, can improve the shear strength of junction, reduces the initial slip of junction, improves the initial shear rigidity of junction.
Furthermore, the inner surface of the connecting hole and the outer surface of the second screw section are smooth surfaces. The non-thread design of the contact part of the screw and the upper flange steel plate avoids the damage of the joint caused by the embedding of the thread on the screw into the upper flange steel plate, and when the combination beam needs to be dismantled or replaced, the UHPC plate and the corrugated steel web steel beam can be conveniently and quickly dismantled and replaced.
Further, the bolt connecting piece also comprises a circular hollow sleeve; the outer surface of the first screw section is in threaded connection with the inner surface of the circular hollow sleeve, the bottom end of the first screw section is flush with the bottom end of the circular hollow sleeve, the bottom end face of the circular hollow sleeve is arranged on the top surface of the top flange steel plate, and the top end of the first screw section is arranged in the inner space of the circular hollow sleeve.
Further, the first screw section sequentially comprises a first cylindrical section, a second cylindrical section and a third cylindrical section from top to bottom; the outer surface of the first cylindrical section is a smooth surface, and the outer surface of the second cylindrical section is provided with a threaded structure; the circular hollow sleeve comprises a first sleeve section, a second sleeve section and a third sleeve section from top to bottom in sequence, and the inner surface of the second sleeve section is provided with a threaded structure; the outer surface of the second cylindrical section is fixedly connected with the inner surface of the second sleeve section through a threaded structure; the outer surface of the third cylindrical section is closely attached to the inner surface of the third sleeve section, and the first cylindrical section is arranged in the inner space of the first sleeve section. The filling material is poured in the inner space of the first sleeve section of the circular hollow sleeve, so that the anchoring rigidity of the bolt connecting piece can be enhanced.
Furthermore, the top of the outer wall of the circular hollow sleeve is provided with a bulge which extends outwards in the radial direction of the sleeve. Furthermore, the bulge is a circular boss arranged around the hollow sleeve. Therefore, the tensile strength of the bolt connecting piece can be improved.
Furthermore, the UHPC plate is provided with a plurality of notches along the length direction, a plurality of groups of connecting holes are arranged on the upper flange steel plate along the length direction at intervals, and the connecting holes are arranged opposite to the corresponding notches.
Further, the UHPC plate is a prefabricated plate.
Further, the UHPC plate is a solid plate, a hollow plate or a waffle plate.
Compared with the prior art, the invention has the following beneficial effects:
1. the bolt connecting piece has the advantages of tight connection, fatigue resistance, convenient assembly and disassembly and the like, can avoid residual stress caused by process problems after the conventional welding nail is welded, realizes the disassembly and replacement of the combined beam, enables undamaged components to be recycled, and can save building material resources.
2. The structure of the connecting hole between the second screw section of the screw and the upper flange steel plate is designed to be an upper inverted frustum shape and a lower cylindrical shape, so that the shearing resistance area between the screw and the upper flange steel plate is increased, the stress at the joint of the screw and the upper flange steel plate is more uniform, the shearing resistance strength of the joint can be improved, the initial sliding of the joint is reduced, and the initial shearing rigidity of the joint is improved.
3. The internal surface of connecting hole and the surface of second screw rod section are the smooth surface, thereby the screw rod has been avoided the screw thread embedding on the screw rod with the non-thread design of upper limb edge steel sheet contact site to reduce the connection effect of junction inside, when the composite beam need be demolishd or change, can conveniently carry out quick demolishment and change with UHPC board and wave form steel web girder steel, when changing bolted connection's component during the operation, can be after UHPC board and wave form steel web girder steel separation, screw rod part is unscrewed, only circular hollow sleeve stays inside the decking, undamaged screw rod, the nut, all reusable such as steel gasket.
4. The filling material is poured in the inner space of the first sleeve section of the circular hollow sleeve, so that the anchoring rigidity of the bolt connecting piece can be enhanced; the top of the outer wall of the round hollow sleeve is provided with a bulge which extends outwards in the radial direction of the sleeve, so that the tensile strength of the bolt connecting piece can be improved.
5. The UHPC plate can deform with the corrugated steel web steel beam in a coordinated manner, so that the cracking of the composite beam can be delayed; the UHPC with good durability can reduce the maintenance cost of the composite beam and can prolong the service life of the composite beam.
6. The buckling stability of the corrugated steel web is good, stiffening ribs do not need to be arranged, the construction process of the steel beam can be simplified, and the construction efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a section of fabricated corrugated steel web-UHPC composite beam according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the connection between the steel beam and the UHPC board according to an embodiment of the present invention;
FIG. 3 is a top view of a notch in an embodiment of the present invention;
FIG. 4 is a top view of an upper flange steel plate in an embodiment of the present invention;
FIG. 5 is a schematic structural view of a bolted connection in an embodiment of the invention;
FIG. 6 is a schematic structural view of the connection between the bolted connection and the upper flange steel plate according to an embodiment of the present invention;
FIG. 7 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is a schematic structural view of a circular hollow sleeve according to an embodiment of the present invention;
FIG. 9 is a schematic view of the structure at B-B in FIG. 8;
FIG. 10 is a schematic view of a screw according to an embodiment of the present invention.
In the figure: 1. a UHPC board; 2. a notch; 3. a top flange steel plate; 4. a corrugated steel web; 5. a lower flange steel plate; 6. a bolt connection; 7. connecting holes; 8. a screw; 81. a first screw section; 811. a first cylindrical section; 812. a second cylindrical section; 813. a third cylindrical section; 82. a second screw section; 83. a third screw section; 9. a nut; 10. a steel gasket; 11. a circular hollow sleeve; 111. a first sleeve section; 112. a second sleeve section; 113. a third sleeve section; 12. a protrusion; l, central axis of the steel beam; theta, and the included angle between the tangent line of the circular truncated cone with the upper inverted circular truncated cone section and the horizontal plane.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
As shown in fig. 1 to 4, the invention provides a fabricated corrugated steel web-UHPC composite beam, which comprises a UHPC plate 1, a steel beam and a bolt connector 6.
The UHPC plate 1 is a precast plate, and the UHPC plate 1 can be cast into a precast plate by erecting a mold on site or manufactured into a precast plate in advance in a factory. The structural form of the UHPC plate 1 is a solid plate, a hollow plate or a waffle plate.
The UHPC plate 1 is provided with a notch 2 along the length direction. The notch 2 is a square notch, and preferably, the side length of the notch 2 is 15 cm-20 cm.
The steel beam comprises an upper flange steel plate 3, a corrugated steel web plate 4 and a lower flange steel plate 5, wherein the upper flange steel plate 3, the corrugated steel web plate 4 and the lower flange steel plate 5 are connected through welding to form the corrugated steel web beam.
The top surface of the upper flange steel plate 3 is provided with the UHPC plate 1, the upper flange steel plate 3 is symmetrically provided with connecting holes 7 along the left side and the right side of the central axis L direction of the steel beam, and the positions of the notches 2 on the UHPC plate 1 correspond to the positions of the connecting holes 7 on the upper flange steel plate 3.
The UHPC plate 1 is provided with a plurality of notches 2 along the length direction, a plurality of groups of connecting holes 7 on the upper flange steel plate 3 are arranged along the length direction at intervals, and the number of each group of connecting holes 7 is 4. A cast-in-place trough is formed between the inner surface of the notch 2 and the top surface of the upper flange steel plate 3.
And the bolt connecting piece 6 is fixedly connected with the upper flange steel plate 3 through a corresponding connecting hole 7. The bolt connection 6 comprises a screw 8, a nut 9 and a steel washer 10. The screw 8 comprises a first screw section 81, a second screw section 82 and a third screw section 83 from top to bottom in sequence. The third screw section 83 penetrates through the connecting hole 7 and is fixedly connected with the nut 9, and the steel gasket 10 is arranged between the top surface of the nut 9 and the bottom surface of the upper flange steel plate 3. The second screw section 82 is arranged in the connecting hole 7, the first screw section 81 is arranged in a cast-in-place groove above the connecting hole 7, and 4 bolt connecting pieces 6 are arranged in each cast-in-place groove.
And a filling material is poured in the cast-in-place groove, and the filling material is high-strength non-shrinkage slurry.
As shown in fig. 5 to 10, the connecting hole 7 includes an upper rounded frustum section and a lower cylindrical section, and the second screw section 82 includes an upper rounded frustum section and a lower cylindrical section; the outer surface of the second screw section 82 is tightly attached to the inner surface of the connecting hole 7. From this, can increase the anti-shear area between screw rod and the last flange steel sheet, the atress of screw rod and last flange steel sheet junction is more even, can improve the shear strength of junction, reduces the initial slip of junction, improves the initial shear rigidity of junction.
The inner surface of the connecting hole 7 and the outer surface of the second screw section 82 are smooth surfaces. Thereby screw thread embedding top flange steel sheet inside has been avoided to screw rod and the unthreaded design of top flange steel sheet contact site reduces the connection effect of junction, when the composite beam need demolish or change, can conveniently demolish fast and change UHPC board and corrugated steel web girder steel.
The bolt connection 6 also comprises a circular hollow sleeve 10. The surface of first screw rod section 81 with be connected through helicitic texture between the internal surface of circular hollow sleeve 10, the bottom of first screw rod section 81 with the bottom of circular hollow sleeve 10 flushes, the bottom face of circular hollow sleeve 10 is arranged in on the top surface of top flange steel sheet 3, the top of first screw rod section 81 is arranged in the inner space of circular hollow sleeve 10.
The first screw section 81 comprises a first cylindrical section 811, a second cylindrical section 812 and a third cylindrical section 813 in sequence from top to bottom. The outer surface of the first cylindrical section 811 is a smooth surface, the outer surface of the second cylindrical section 812 is provided with a thread structure, and the outer surface of the third cylindrical section 813 is a smooth surface.
The diameter of the first cylindrical section 811 and the third screw section 83 may be 20mm, 24mm or 28mm. The diameter of the top surface of the round table of the upper inverted round table section of the second screw section 82 is preferably 6-10 mm larger than that of the third screw section 83. The included angle theta between the tangent line of the outer surface of the circular truncated cone of the upper inverted circular truncated cone section and the horizontal plane is 45 degrees. The nut 9 can be a M20, M24 or M28 hexagonal nut, and the specification of the nut 9 is matched with the diameter of the third screw section 83.
Circular hollow sleeve 11 is from last to including first sleeve section 111, second sleeve section 112 and third sleeve section 113 down in proper order, the internal surface of first sleeve section 111 is the smooth surface, the internal surface of second sleeve section 112 is equipped with helicitic texture, the internal surface of third sleeve section 113 is the smooth surface. Preferably, the wall thickness of the first sleeve section 111 is 2 to 3mm, the wall thickness of the second sleeve section 112 is 3 to 5mm, and the wall thickness of the third sleeve section 113 is 2 to 3mm.
The outer surface of the second cylindrical section 812 is fixedly connected with the inner surface of the second sleeve section 112 through a threaded structure; the outer surface of the third cylindrical section 813 closely fits the inner surface of the third sleeve section 113, and the first cylindrical section 811 is disposed in the inner space of the first sleeve section 111.
The top of the circular hollow sleeve 11 is provided with a projection 12 extending radially outwards towards the sleeve. The protrusion 12 is a circular boss arranged around the hollow sleeve 11. The length of the outward extension of the bulge 12 is 1 cm-2 cm. Therefore, the tensile strength of the bolt connecting piece can be improved.
The construction process of the composite beam of the embodiment of the invention comprises the following steps:
s1: the upper flange steel plate 3, the corrugated steel web 4 and the lower flange steel plate 5 are connected through welding to form a corrugated steel web beam;
s2: manufacturing a UHPC plate 1, and reserving a notch 2 on the UHPC plate 1; a connecting hole 7 is formed in the upper flange steel plate 3 along the direction of the central axis L of the steel beam, the UHPC plate 1 is placed on the top surface of the upper flange steel plate 3, and the positions of the notch 2 on the UHPC plate 1 and the connecting hole 7 on the upper flange steel plate 3 are aligned with each other;
s3: screwing a circular hollow sleeve 11 into the upper part of the screw 8;
s4: and (3) passing a circular hollow sleeve 11 and a screw 8 through a preformed hole 7 on the upper flange steel plate 3 from the notch 2 of the UHPC plate 1, tightly attaching a steel gasket 10 to the bottom wall of the upper flange steel plate 3, and screwing a nut 9 from the lower part of the screw 8 so as to tightly and firmly connect the UHPC plate 1 and the corrugated steel web steel beam.
S5: and (3) pouring high-strength non-shrinkage slurry into the notch 2 of the UHPC plate 1 to finish the assembly construction of the composite beam.
If the component of the composite beam is damaged and needs to be replaced, the nut 9 is unscrewed from the bottom of the upper flange steel plate 3, the steel gasket 10 is taken down, the prefabricated UHPC plate 1 is separated from the corrugated steel web steel beam, and the composite beam is rapidly disassembled and replaced. When the bolted components are replaced during operation, the screw part can be unscrewed after the UHPC plate is separated from the steel beam, only the round hollow sleeve is left in the bridge deck plate, and undamaged screws, nuts, steel gaskets and the like can be recycled.
The assembled corrugated steel web-UHPC composite beam realizes the detachable replacement of the composite beam components. The performance of the concrete slab is improved. The buckling stability of the steel beam web is enhanced, the construction process of the steel-concrete composite beam is simplified, and the construction efficiency is improved.
The above-described embodiments are set forth so that this disclosure will be thorough and complete, and will not be limited by any theory presented in the preceding claims, which may suggest themselves to those skilled in the art after reading this disclosure and all equivalents thereof that fall within the scope of the invention as defined in the claims appended hereto.
Claims (10)
1. An assembled corrugated steel web-UHPC composite beam is characterized by comprising a UHPC plate (1), a steel beam and a bolt connecting piece (6); the UHPC plate (1) is provided with a notch (2) along the length direction; the steel beam comprises an upper flange steel plate (3), a corrugated steel web plate (4) and a lower flange steel plate (5), and the upper flange steel plate (3), the corrugated steel web plate (4) and the lower flange steel plate (5) are connected through welding to form the corrugated steel web plate steel beam;
the top surface of the upper flange steel plate (3) is provided with the UHPC plate (1), the upper flange steel plate (3) is provided with a connecting hole (7) along the central axis (L) direction of the steel beam, a notch (2) on the UHPC plate (1) corresponds to the connecting hole (7) on the upper flange steel plate (3), and a cast-in-place groove is formed between the inner surface of the notch (2) and the top surface of the upper flange steel plate (3);
the bolt connecting piece (6) is fixedly connected with the upper flange steel plate (3) through a corresponding connecting hole (7); the bolt connecting piece (6) comprises a screw rod (8) and a nut (9); the screw (8) sequentially comprises a first screw section (81), a second screw section (82) and a third screw section (83) from top to bottom; the third screw section (83) penetrates through the connecting hole (7) and is fixedly connected with the nut (9), the second screw section (82) is arranged in the connecting hole (7), the first screw section (81) is arranged in a cast-in-place groove above the connecting hole (7), and a pouring material is filled in the cast-in-place groove.
2. The fabricated corrugated steel web-UHPC composite beam of claim 1, wherein the connecting hole (7) comprises an upper rounded frustum section and a lower cylindrical section, and the second screw section (82) comprises an upper rounded frustum section and a lower cylindrical section; the outer surface of the second screw section (82) is tightly attached to the inner surface of the connecting hole (7).
3. The fabricated corrugated steel web-UHPC composite beam as claimed in claim 2, wherein the inner surface of the connecting hole (7) and the outer surface of the second screw section (82) are smooth surfaces.
4. The fabricated corrugated steel web-UHPC composite beam of claim 1, wherein the bolted joint (6) further comprises a circular hollow sleeve (11); the utility model discloses a round hollow sleeve (11) of screw driver, including first screw rod section (81), the surface of first screw rod section (81) with threaded connection between the internal surface of round hollow sleeve (11), the bottom of first screw rod section (81) with the bottom of round hollow sleeve (11) flushes, the bottom face of round hollow sleeve (11) is arranged in on the top surface of top flange steel sheet (3), the top of first screw rod section (81) is arranged in the inner space of round hollow sleeve (11).
5. The assembled corrugated steel web-UHPC composite beam of claim 4, wherein the first screw section (81) comprises a first cylindrical section (811), a second cylindrical section (812) and a third cylindrical section (813) from top to bottom; the outer surface of the first cylindrical section (811) is a smooth surface, and the outer surface of the second cylindrical section (812) is provided with a threaded structure;
the circular hollow sleeve (11) sequentially comprises a first sleeve section (111), a second sleeve section (112) and a third sleeve section (113) from top to bottom, and the inner surface of the second sleeve section (112) is provided with a thread structure;
the outer surface of the second cylindrical section (812) is fixedly connected with the inner surface of the second sleeve section (112) through a threaded structure; the outer surface of the third cylindrical section (813) is tightly attached to the inner surface of the third sleeve section (113), and the first cylindrical section (811) is arranged in the inner space of the first sleeve section (111).
6. The assembled corrugated steel web-UHPC composite beam of claim 4, characterized in that the top of the outer wall of the circular hollow sleeve (11) is provided with a protrusion (12) extending radially outwards towards the sleeve.
7. The assembled corrugated steel web-UHPC composite beam of claim 6, wherein the protrusions (12) are circular bosses disposed around the hollow sleeve (11).
8. The assembled corrugated steel web-UHPC combined beam as claimed in claim 1, wherein the UHPC plate (1) is provided with a plurality of notches (2) along the length direction thereof, the connecting holes (7) on the upper flange steel plate (3) are provided with a plurality of groups at intervals along the length direction thereof, and the connecting holes (7) are arranged opposite to the corresponding notches (2).
9. The fabricated corrugated steel web-UHPC composite beam according to any one of claims 1-8, wherein the UHPC panel (1) is a prefabricated panel.
10. The fabricated corrugated steel web-UHPC composite beam according to any one of claims 1-8, characterized in that the UHPC slab (1) is a solid slab, a hollow slab or a waffle slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211316226.3A CN115613444A (en) | 2022-10-26 | 2022-10-26 | Assembled corrugated steel web-UHPC composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211316226.3A CN115613444A (en) | 2022-10-26 | 2022-10-26 | Assembled corrugated steel web-UHPC composite beam |
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| CN115613444A true CN115613444A (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211316226.3A Pending CN115613444A (en) | 2022-10-26 | 2022-10-26 | Assembled corrugated steel web-UHPC composite beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116180980A (en) * | 2023-03-17 | 2023-05-30 | 武汉理工大学 | Assembled steel-concrete composite beam structure connected by adopting combined high-strength bolt connecting piece |
| CN116219866A (en) * | 2023-05-08 | 2023-06-06 | 北京建工土木工程有限公司 | Shearing and pulling resistant connecting piece and construction method thereof |
-
2022
- 2022-10-26 CN CN202211316226.3A patent/CN115613444A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116180980A (en) * | 2023-03-17 | 2023-05-30 | 武汉理工大学 | Assembled steel-concrete composite beam structure connected by adopting combined high-strength bolt connecting piece |
| CN116219866A (en) * | 2023-05-08 | 2023-06-06 | 北京建工土木工程有限公司 | Shearing and pulling resistant connecting piece and construction method thereof |
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