CN114411964A - Prefabricated steel-concrete composite beam connected by adopting reamed hole bolts and construction method thereof - Google Patents
Prefabricated steel-concrete composite beam connected by adopting reamed hole bolts and construction method thereof Download PDFInfo
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- CN114411964A CN114411964A CN202210181354.5A CN202210181354A CN114411964A CN 114411964 A CN114411964 A CN 114411964A CN 202210181354 A CN202210181354 A CN 202210181354A CN 114411964 A CN114411964 A CN 114411964A
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- 239000004567 concrete Substances 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 78
- 239000010959 steel Substances 0.000 claims abstract description 78
- 239000011178 precast concrete Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 8
- 239000011372 high-strength concrete Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/38—Arched girders or portal frames
- E04C3/46—Arched girders or portal frames of materials not covered by groups E04C3/40 - E04C3/44; of a combination of two or more materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A prefabricated assembled steel-concrete composite beam connected by adopting a hinged hole bolt mainly comprises an H-shaped steel beam; a reamed hole bolt connecting piece arranged on the upper flange of the H-shaped steel beam; the precast concrete plate is arranged on the top surface of the upper flange of the H-shaped steel beam; the preformed hole is arranged on the precast concrete plate; and filling materials poured in the preformed holes of the precast concrete plates. The hinge hole bolt is adopted as a shear connector, the bolt is in close fit with the steel beam, the mechanical property is good, the field welding operation is not needed, and the hinge hole bolt is detachable and replaceable; the large-diameter reamed hole bolt connecting piece group which is arranged in a cluster mode not only can effectively avoid the nail group effect, but also is more beneficial to assembly. The invention also provides a construction method of the beam, which is convenient to construct, easy to maintain in the later period and high in economic benefit.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to a prefabricated assembled steel-concrete composite beam connected by adopting a reamed hole bolt.
Background
The steel-concrete combined structure fully utilizes the advantages of high tensile strength of steel and good compressive strength of concrete, can meet the requirements of modern structures on light large span, prefabricated assembly and rapid construction, and has wide application prospect in the fields of buildings, bridge structures and the like. The shear connector is used as a key element in a composite structure, and the shear resistance of the shear connector directly influences the overall performance of the composite structure.
At present, most of shear connectors in the steel-concrete composite beam are stud connectors, but the stud connectors are large in field welding workload, welding quality is not easy to control, once a certain part of a structure is damaged, disassembly and repair are complex, and requirements of sustainable development of the building industry are difficult to meet. In addition, the arrangement form of the existing steel-concrete combined beam connecting piece is mostly a uniform distribution type arrangement, which is not beneficial to assembly construction, and the concrete slab is mostly cast-in-place, the field wet operation amount is large, the construction period is longer, and the construction quality is difficult to guarantee.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a prefabricated steel-concrete combined beam connected by using a hinged hole bolt, wherein the hinged hole bolt is tightly matched with a steel beam, the mechanical property is good, the field welding operation is not needed, and the beam is detachable and replaceable; the prefabricated combined beam has the advantages of high construction quality, short construction period, high assembly efficiency and low later maintenance cost, improves the stress performance of the prefabricated combined beam, and has the characteristics of high durability and excellent anti-seismic performance.
In order to achieve the purpose, the invention adopts the technical scheme that:
a prefabricated assembled steel-concrete composite beam bolted with reamed holes, comprising:
an H-shaped steel beam;
a reamed hole bolt connecting piece arranged on the upper flange of the H-shaped steel beam;
the precast concrete plate is arranged on the top surface of the upper flange of the H-shaped steel beam;
the preformed hole is arranged on the precast concrete plate;
and filling materials poured in the prepared holes of the precast concrete plates.
In one embodiment, the H-shaped steel beam is formed by welding two steel plates and a steel web, wherein the two steel plates are welded at the upper end and the lower end of the short edge of the steel web to be used as upper and lower flanges; or the H-shaped steel beam is hot-rolled H-shaped steel.
In one embodiment, the upper flange of the H-shaped steel beam is provided with bolt holes which are symmetrical left and right along the axis direction of the steel beam, the bolt holes are arranged in a bundling mode, 4 bolt holes form a group, the opening size of each bolt hole is consistent with the diameter of a screw rod of the hinged hole bolt connecting piece, and the corresponding 4 hinged hole bolt connecting pieces form a group.
In one embodiment, the distance between the outer edge of the bolt hole and the edge of the flange of the H-shaped steel beam is not less than 30mm, and the distance between the outer edge of the bolt hole and the edge of the precast concrete plate is not less than 100 mm.
In one embodiment, the preformed holes correspond to the positions of each group of the hinged-hole bolt connectors, and the preformed holes are circular holes, square holes or tapered holes.
In one embodiment, the reamed hole bolt connection includes a reamed hole bolt, a washer, and a nut.
In one embodiment, the performance grade of the reamed hole bolt is 8.8 grade or 10.9 grade, the material is 45# steel, 35VB or ML20MnTiB, and the aperture ratio of the size of the preformed hole to the diameter of the reamed hole bolt is 5-8.
In one embodiment, the precast concrete plate is made of high-strength concrete or ordinary concrete.
In one embodiment, the filler material is Ultra High Performance Concrete (UHPC) or non-shrink self-compacting high strength grouting material (CGM).
The invention also provides a construction method of the prefabricated assembled steel-concrete composite beam connected by the reamed hole bolt, which comprises the following steps:
1) in a factory, two high-strength steel plates are respectively welded at the upper end and the lower end of the short side of a web steel plate to form an H-shaped steel beam serving as an upper flange and a lower flange, the upper flange of the steel beam is subjected to tapping processing of a bolt hole, a reamed hole bolt penetrates through the bolt hole by adopting a driving-in method or a pressing-in method, and a gasket and a nut are sleeved on the upper flange of the H-shaped steel beam 1;
2) in a factory, a concrete template is supported in advance, high-strength concrete is poured in the concrete template, the template is dismantled after the concrete is cured, and the processing of the precast concrete is completed;
3) and (3) on site, after the H-shaped steel beam and the precast concrete plate are hoisted and aligned, pouring ultra-high performance concrete (UHPC) in the reserved hole to complete the integral connection of the H-shaped steel beam and the precast concrete plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the mechanical property is excellent. The prefabricated assembled steel-concrete composite beam adopts the reamed hole bolt as a shear connector, the diameter of a polished rod part of a screw rod of the reamed hole bolt is consistent with the diameter of the bolt hole, the prefabricated assembled steel-concrete composite beam belongs to transition fit, the screw rod is tightly connected with the steel beam, when the connected pieces slide relatively, the movement of the prefabricated assembled steel-concrete composite beam is prevented by the shear action of the bolt, the shear rigidity is higher, and the deflection deformation of the composite beam during normal use can be reduced. The large-diameter reamed hole bolt connecting piece group arranged in a cluster mode not only can effectively avoid the nail group effect, but also is beneficial to assembly. In addition, a larger adhesive force exists between the ultra-high performance concrete (UHPC) and the reamed hole bolt, so that the reamed hole bolt has good performance of resisting horizontal shearing force and drawing force, and the structural integrity and the seismic performance are improved.
2. The durability is improved. Compared with the connecting pieces which are uniformly distributed, the reamed hole bolt connecting piece which is arranged in a cluster way not only can well solve the problem of assembly connection between the precast concrete plate and the steel beam, but also can reduce the cracking of the concrete plate caused by the contraction of the concrete, and the structural durability is improved.
3. Simple construction and good quality. The H-shaped steel beam is welded in a factory, meanwhile, the concrete slab can be precast in the factory in a more standard maintenance mode, the influence of weather factors is avoided, the mechanical property of the concrete is ensured, only assembly connection is needed on the site, the on-site welding operation and wet operation amount are greatly reduced, the construction period is shortened, and the engineering quality is improved.
4. The maintenance cost is reduced. Utilize batch production prefabricated H shaped steel roof beam and concrete slab, adopt the assembly connection of bundling ream hole bolt grout, later maintenance is more convenient, and the component of damage can in time be changed, has reduced the maintenance cost and the life cycle cost of composite beam. And the composite beam is easy to dismantle, the energy consumption and the influence on the environment in the dismantling stage are small, and the sustainability of the bridge construction is realized.
In general, the prefabricated assembled steel-concrete composite beam connected by the hinged holes and the bolts improves the integrity, the stability and the durability, simplifies the construction process and the construction difficulty, accelerates the construction progress, improves the construction quality of components, is easy to maintain in the later period, has high economic benefit, can effectively solve the key difficult problem of restricting the popularization and the application of the prefabricated assembled steel-concrete composite beam for a long time, can fully exert and effectively promote the remarkable advantages of the prefabricated assembled composite beam in the aspects of stress performance, durability, economic performance and the like, and can be widely applied to various structures.
Drawings
FIG. 1 is a cut-away three-dimensional schematic view of a precast concrete panel of the present invention;
FIG. 2 is a three-dimensional schematic of the overall structure of the present invention;
FIG. 3 is an overall top schematic view of the present invention;
FIG. 4 is an overall side view schematic of the present invention;
FIG. 5 is a three-dimensional view of an H-beam of the present invention;
FIG. 6 is a three-dimensional schematic view of a reamed hole bolt connection of the present invention;
fig. 7 is a three-dimensional schematic view of a circular hole precast concrete plate of the present invention;
fig. 8 is a three-dimensional schematic view of a square hole precast concrete panel of the present invention.
Icon: 1-H-shaped steel beam; 2-reaming a hole bolt connector; 201-reaming the hole bolt; 202-a gasket; 203-a nut; 3-precast concrete slab; 4-preparing a hole; 5-a filler material; 6-bolt hole. .
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
As shown in fig. 1, 2, 3, 4, 5, 6, 7 and 8, the present invention is a prefabricated steel-concrete composite girder bolted with reamed holes, which mainly comprises: h shaped steel roof beam 1, reamed hole bolted connection 2, precast concrete board 3, preformed hole 4 and filler material 5. Wherein, ream hole bolted connection spare 2 is installed in H shaped steel roof beam 1 top flange, and precast concrete board 3 sets up in H shaped steel roof beam 1 top flange top surface, and preformed hole 4 sets up in precast concrete board 3, and filling material 5 pours in preformed hole 4.
As shown in fig. 1 to 5, the H-shaped steel beam 1 is composed of two steel plates and a steel web, and the two steel plates are welded to the upper and lower ends of the short side of the steel web to serve as upper and lower flanges; hot rolled H-section steel can also be directly adopted. A plurality of bolt holes 6 are symmetrically formed in the left and right of the upper flange of the H-shaped steel beam 1 along the axis direction of the steel beam, the bolt holes 6 are in a cluster arrangement mode, and 4 bolt holes 6 form a group and are arranged on four vertexes of a rectangle in an illustrative mode. The size of the opening of the bolt hole 6 is consistent with the diameter of the screw of the reamed hole bolt connecting piece 2, so that the reamed hole bolt connecting piece 2 can penetrate through the opening, and the 4 corresponding reamed hole bolt connecting pieces 2 also form a group.
The reamed hole bolt connection 2 comprises a reamed hole bolt 201, a washer 202 and a nut 203. Illustratively, in the present invention, the performance grade of the reamed hole bolt 201 is 8.8 grade or 10.9 grade, the material of the reamed hole bolt can be 45# steel, 35VB or ML20MnTiB, the screw of the reamed hole bolt connector 2, i.e. the main body part of the reamed hole bolt 201, is driven or pressed through the bolt hole 6, and the upper flange of the H-beam 1 is fixed with the spacer 202 and the nut 203.
As shown in fig. 1 to 4, 7 and 8, the prepared hole 4 of the present embodiment is a circular hole, but may be a square hole or a tapered hole as needed. The preformed holes 4 correspond to the positions of each group of the hinged hole bolt connecting pieces 2, namely, each preformed hole 4 is used for placing one group of the hinged hole bolt connecting pieces 2.
In the invention, the concrete used for the precast concrete plate 3 can be high-strength concrete or common concrete, and the filling material 5 can be ultra-high performance concrete (UHPC) or non-shrinkage self-compaction high-strength grouting material (CGM).
Wherein:
1. the diameter of the screw part of the reamed hole bolt 201 is consistent with the basic size of the bolt hole 6, the reamed hole bolt is in tight fit, when the connected pieces slide relatively, the movement of the connected pieces is prevented by the shearing resistance of the bolt, the mechanical property is good, and the field welding operation is not needed. The reamed hole bolt 201 is usually installed by driving in, and is detachable and replaceable.
2. The large-diameter hinged hole bolt connecting piece group arranged in a cluster mode can effectively avoid the group nail effect, is beneficial to assembly, can well solve the problem of assembly connection between the precast concrete plate and the steel beam, reduces the cracking of the concrete plate caused by concrete shrinkage, and improves the structural durability.
3. The distance between the outer edge of the bolt hole 6 and the edge of the flange of the H-shaped steel beam 1 is not less than 30mm, and the distance between the outer edge of the bolt hole and the edge of the precast concrete plate 3 is not less than 100 mm.
4. The aperture ratio of the size of the preformed hole 4 to the diameter of the reamed hole bolt 201 is 5-8.
The concrete construction method of the invention comprises the following steps:
1. in a factory, three high-strength steel plates are selected in advance as a web plate and upper and lower flanges of a steel beam, then the upper and lower flange steel plates are welded at the upper and lower ends of the short edge of the web plate to form an H-shaped steel beam 1, an opening position is determined on the upper flange of the H-shaped steel beam 1, a machine tool reamer is used for drilling, a cluster bolt hole 6 which is symmetrical in the direction of the axis of the steel beam in the left-right direction is machined, finally, a special device is used for driving a hinged hole bolt 201 into the bolt hole 6 by a driving method or a pressing-in method, a gasket 202 and a nut 203 are sleeved on the bolt hole, and the bolt hole is screwed by an electric wrench and fixed on the upper flange of the H-shaped steel beam 1.
2. In a factory, when a concrete slab is supported, a preformed hole 4 corresponding to the position of a hinged hole bolt connecting group in the H-shaped steel beam 1 in a bundling arrangement is arranged, then high-strength concrete or common concrete is poured, and after concrete curing is finished, a template is removed to finish the processing of a precast concrete slab 3.
3. And in the field, after the H-shaped steel beam 1 and the precast concrete plate 3 are hoisted and aligned, Ultra High Performance Concrete (UHPC) is poured in the preformed hole 4, and the integral connection of the H-shaped steel beam 1 and the precast concrete plate 3 is completed.
In summary, the invention adopts grouting assembly technology on the basis of the traditional prefabricated assembled steel-concrete composite beam, and solves the problems of large field wet operation amount and longer construction period of the cast-in-situ steel-concrete composite beam; the large-diameter reamed hole bolt connecting piece group arranged in a cluster mode not only can effectively avoid the group nail effect and is beneficial to assembly, but also can well solve the problem of assembly connection between the precast concrete plate and the steel beam, reduce the cracking of the concrete plate caused by the shrinkage of the concrete and improve the structural durability; meanwhile, larger adhesive force exists between the ultra-high performance concrete (UHPC) and the reamed hole bolt, so that the reamed hole bolt has good performance of resisting horizontal shearing force and drawing force, and the structural integrity and the seismic performance are improved. In a word, according to the design method provided by the invention, the diameter, the number and the group number of the hinge hole bolts arranged in a bundling manner, the size and the shape of the preformed hole of the prefabricated plate and the strength of the filling material in the preformed hole can be further optimized so as to meet the requirements of different practical projects, and the method can be applied to high-rise buildings, super high-rise buildings and bridge structures and has wide application prospect and engineering practical significance.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A prefabricated assembled steel-concrete composite beam connected by using a hinge hole bolt is characterized by comprising:
an H-shaped steel beam (1);
a reamed hole bolt connecting piece (2) arranged on the upper flange of the H-shaped steel beam (1);
the precast concrete plates (3) are arranged on the top surfaces of the upper flanges of the H-shaped steel beams (1);
a preformed hole (4) arranged on the precast concrete plate (3);
and the filling material (5) is poured in the preformed hole (4) of the precast concrete plate (3).
2. The prefabricated assembled steel-concrete composite beam connected by the reamed hole bolts as claimed in claim 1, wherein the H-shaped steel beam (1) is formed by welding two steel plates and a steel web, and the two steel plates are welded at the upper and lower ends of the short side of the steel web to serve as upper and lower flanges; or the H-shaped steel beam (1) is hot-rolled H-shaped steel.
3. The prefabricated steel-concrete composite beam connected by the reamed holes according to claim 1, wherein the H-shaped steel beam (1) is provided with bolt holes (6) at the upper flange, the bolt holes (6) are arranged in a bundle mode, the bolt holes (6) are arranged in the left-right symmetry mode along the axis direction of the steel beam, 4 bolt holes (6) form one group, the opening size of each bolt hole (6) is consistent with the diameter of a screw rod of the reamed hole bolt connecting piece (2), and the corresponding 4 reamed hole bolt connecting pieces (2) form one group.
4. The precast assembled steel-concrete composite beam connected by the reamed hole bolt according to claim 3, wherein the distance from the outer side edge of the bolt hole (6) to the flange edge of the H-shaped steel beam (1) is not less than 30mm, and the distance to the edge of the precast concrete slab (3) is not less than 100 mm.
5. The prefabricated assembled steel-concrete composite beam connected by the reamed holes and bolts according to claim 3, wherein the prepared holes (4) correspond to the positions of the bolt connectors (2) of each group, and the prepared holes (4) are circular holes, square holes or tapered holes.
6. The prefabricated assembled steel-concrete composite girder connected by using the reamed hole bolts according to claim 1 or 5, wherein the reamed hole bolt connection member (2) comprises a reamed hole bolt (201), a washer (202) and a nut (203).
7. The prefabricated assembled steel-concrete composite beam connected by the reamed hole bolts as claimed in claim 1, wherein the reamed hole bolts (201) are 8.8-grade or 10.9-grade in performance grade, 45# steel, 35VB or ML20MnTiB in material quality, and the aperture ratio of the size of the prepared holes (4) to the diameter of the reamed hole bolts (201) is 5-8.
8. The prefabricated assembled steel-concrete composite girder connected by means of the reamed-hole bolts according to claim 1, wherein the precast concrete plate (3) is made of high-strength concrete or general concrete.
9. The prefabricated assembled steel-concrete composite beam connected by the reamed hole bolt according to claim 1 or 8, wherein the filling material (5) is Ultra High Performance Concrete (UHPC) or non-shrinkage self-compacting high strength grouting material (CGM).
10. The construction method of the prefabricated assembled steel-concrete composite girder connected by the reamed hole bolt as set forth in claim 1, wherein the steps of:
1) in a factory, two high-strength steel plates are respectively welded at the upper end and the lower end of the short side of a web steel plate to form an H-shaped steel beam (1) as an upper flange and a lower flange, the upper flange of the steel beam is used for finishing the tapping processing of a bolt hole (6), a reamed hole bolt (201) penetrates through the bolt hole (6) by adopting a driving method or a pressing method, and a gasket (202) and a nut (203) are sleeved on the upper flange of the H-shaped steel beam 1;
2) in a factory, a concrete template is supported in advance, high-strength concrete is poured in the concrete template, the template is dismantled after the concrete is cured, and the precast concrete (3) is processed;
3) and (3) hoisting and aligning the H-shaped steel beam (1) and the precast concrete slab (3) on site, and pouring ultra-high performance concrete (UHPC) in the preformed hole (4) to complete the integral connection of the H-shaped steel beam (1) and the precast concrete slab (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210181354.5A CN114411964A (en) | 2022-02-25 | 2022-02-25 | Prefabricated steel-concrete composite beam connected by adopting reamed hole bolts and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210181354.5A CN114411964A (en) | 2022-02-25 | 2022-02-25 | Prefabricated steel-concrete composite beam connected by adopting reamed hole bolts and construction method thereof |
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| CN114411964A true CN114411964A (en) | 2022-04-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116145531A (en) * | 2023-03-07 | 2023-05-23 | 暨南大学 | Assembled FRP-UHPC combined structure connected in clustered mode and construction method |
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| CN209568612U (en) * | 2018-12-06 | 2019-11-01 | 天津大学 | A kind of mixed combination beam of the detachable steel-using tapered cup nut bolt connection piece |
| CN110593485A (en) * | 2019-09-25 | 2019-12-20 | 天津大学 | Main material damage-free detachable steel-concrete combined beam |
| CN112593476A (en) * | 2020-12-30 | 2021-04-02 | 武汉理工大学 | Assembly type steel-concrete composite beam structure connected by high-strength bolt group |
| CN217079117U (en) * | 2022-02-25 | 2022-07-29 | 西安建筑科技大学 | Prefabricated assembled steel-concrete composite beam connected by adopting reamed hole bolt |
Cited By (2)
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| CN116145531A (en) * | 2023-03-07 | 2023-05-23 | 暨南大学 | Assembled FRP-UHPC combined structure connected in clustered mode and construction method |
| CN116145531B (en) * | 2023-03-07 | 2024-03-22 | 暨南大学 | Assembled FRP-UHPC combined structure connected in clustered mode and construction method |
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