CN111058543A - Connecting structure and mounting method of concrete slab and steel beam - Google Patents
Connecting structure and mounting method of concrete slab and steel beam Download PDFInfo
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- CN111058543A CN111058543A CN202010006368.4A CN202010006368A CN111058543A CN 111058543 A CN111058543 A CN 111058543A CN 202010006368 A CN202010006368 A CN 202010006368A CN 111058543 A CN111058543 A CN 111058543A
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- bolt
- steel beam
- nut
- concrete slab
- prefabricated platform
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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
- E04B1/38—Connections for building structures in general
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Abstract
The invention discloses a connecting structure and a mounting method of a concrete slab and a steel beam, and the connecting structure comprises the steel beam, a prefabricated platform and a plurality of bolt rods arranged on the prefabricated platform, wherein the upper ends of the bolt rods are provided with nuts, the lower parts of the bolt rods are sequentially provided with inner nuts and nuts, the prefabricated platform is arranged on the bolt rods between the inner nuts and the nuts, and the lower parts of the inner nuts are abutted against the prefabricated platform; a concrete slab with the height higher than that of the bolt rod is poured on the prefabricated platform; the inner nut is made of rubber and plastic materials, so that when the nut and the prefabricated platform are disassembled and the concrete slab is driven by the nut to be connected with the steel beam, the inner nut is broken or cracked along with the downward movement of the bolt rod. The connecting structure and the mounting method of the concrete slab and the steel beam can improve the friction force between the concrete slab and the steel beam, provide stronger shearing resistance for a combined structure, and have firmer and more reliable connection.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a connecting structure of a concrete slab and a steel beam and an installation method.
Background
The traditional steel and concrete combined structure is designed based on the combination of the high tensile strength of steel and the compressive property of concrete, has the characteristics of high bearing capacity, light self weight, material saving, good anti-seismic property and the like, and can be widely applied to actual engineering. However, the traditional steel and concrete combined structure has low assembly degree and large hoisting weight; and wet seams exist, resulting in long construction period and low efficiency. Therefore, the current requirements for structural assembly cannot be met.
In the existing bolt type assembly type steel-concrete combined beam, a larger gap exists between a bolt hole and a bolt rod, so that the concrete plate and a steel beam obviously slide relatively in the operation process of the bridge, on one hand, the connection of a steel-concrete joint surface is unreliable, the steel and the concrete can not exert due performance, and the problems of low structural rigidity, reduced bearing capacity, material waste and the like are caused; on the other hand, the larger gap cannot form a combined force to resist the shearing force of a steel-concrete joint surface together due to the friction force generated by the axial force of the bolt and the shearing resistance of the bolt, so that the using amount of the bolt is large, materials are wasted, the requirement on the precision of a bolt hole of a concrete slab is increased, the manufacturing process of the concrete slab is complex, the manufacturing cost is high, the assembly and construction are inconvenient, and the construction period is prolonged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a connecting structure of a concrete slab and a steel beam, which can realize fabricated construction and can fully exert the friction force between the concrete slab and the steel beam and the shearing resistance of a screw rod, so that the connection of the concrete slab and the steel beam is firmer and more reliable; another object of the present invention is to provide a method for installing a concrete slab and a steel beam.
In order to achieve the purpose, the invention provides a connecting structure of a concrete slab and a steel beam, which comprises the steel beam, a prefabricated platform and a plurality of bolt rods arranged on the prefabricated platform, wherein the upper ends of the bolt rods are provided with nuts, the lower parts of the bolt rods are sequentially provided with inner nuts and nuts, the prefabricated platform is arranged on the bolt rods between the inner nuts and the nuts, and the lower parts of the inner nuts are abutted against the prefabricated platform;
a concrete slab with the height higher than that of the bolt rod is poured on the prefabricated platform;
the inner nut is made of rubber and plastic materials, so that when the nut and the prefabricated platform are disassembled and the concrete slab is driven by the nut to be connected with the steel beam, the inner nut is broken or cracked along with the downward movement of the bolt rod.
Preferably, the cross section of the inner nut is trapezoidal, the size of the upper part of the trapezoid is smaller than that of the lower part of the trapezoid, the size of the upper part of the trapezoid is matched with the diameter of the bolt rod, and the lower part of the trapezoid is abutted to the prefabricated platform.
Preferably, the cross section of the inner nut is rectangular; and a through hole which extends up and down and is used for the bolt rod to pass through is arranged on the rectangular inner nut, and the lower part of the rectangle is abutted against the prefabricated platform.
Preferably, a gasket is fixedly arranged on the bolt rod at the bottom of the nut.
Preferably, the bolt rod is vertically arranged.
Preferably, the number of the bolt rods is multiple, and two bolt rods are a pair.
A method of installing a concrete slab and steel beam comprising the steps of:
s1, installing a gasket at the nut of the bolt rod, wherein the diameter of the gasket is larger than that of the bolt rod; an inner nut made of rubber and plastic materials is arranged on the bolt rod;
s2, one end of the bolt rod, which is far away from the nut, penetrates through a bolt hole reserved on the prefabricated platform, and a nut is installed to fix the bolt rod;
s3, pouring concrete on the prefabricated platform, wherein the pouring height is higher than the height of the bolt rod;
s4, removing the nuts and the prefabricated platform after the concrete slab is solidified, and moving the concrete slab to a place to be installed;
and S5, assembling the steel beam and the concrete slab, enabling the bolt rod to penetrate through a reserved mounting hole on the steel beam, mounting a nut at the end part of the lower end of the bolt to fix the bolt, and enabling the nut to drive the bolt to move downwards until the bolt extrudes the inner nut, so that the inner nut is broken or cracked.
Preferably, the cross section of the inner nut is trapezoidal, the size of the upper part of the trapezoid is smaller than that of the lower part of the trapezoid, the size of the upper part of the trapezoid is matched with the diameter of the bolt rod, and the lower part of the trapezoid is abutted to the prefabricated platform.
Preferably, the bolt rod is vertically arranged.
Preferably, the number of the bolt rods is multiple, and two bolt rods form a pair; the steel beam is provided with a plurality of pairs of mounting holes, every two mounting holes are a pair, and the mounting holes are opposite to the bolt rods.
Compared with the prior art, the invention has the beneficial effects that: according to the connecting structure of the concrete slab and the steel beam, the inner nut is arranged on the bolt rod, so that the position of the bolt rod can be fixed, the bolt rod is prevented from deviating in the concrete pouring process, and the effectiveness of the pretension force of the bolt is guaranteed; after the concrete slab is manufactured and installed on the steel beam, the inner nut is broken or broken while the nut is screwed down, and the vertical constraint of the inner nut on the bolt rod is removed, so that the screw rod can move downwards, pressure is fully brought to the concrete slab, and the friction force between the concrete slab and the steel beam is greatly improved; the bolt bar is poured in the concrete plate, and the concrete plate is in seamless connection with the screw rod, so that the friction force between the concrete plate and the steel beam and the shearing resistance of the bolt bar form resultant force which is jointly used for resisting the sliding between the concrete plate and the steel beam, and the integrity is improved; the bolt bar of the whole combined structure is connected with the steel beam top plate and the concrete slab more firmly and reliably, so that the beam body has higher overall performance.
The method for mounting the concrete slab and the steel beam has the advantages of low concrete slab hoisting weight, high assembly degree, convenience and quickness in construction and short construction period.
Drawings
Fig. 1 is a schematic view illustrating a connection structure of a precast platform and a bolt bar of a connection structure of a concrete slab and a steel beam according to an embodiment of the present invention;
fig. 2 is a structural view of the prefabricated platform of fig. 1 with the prefabricated platform removed, showing a connection structure of a concrete slab and a steel beam according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a concrete plate and a steel beam of the connection structure of the concrete plate and the steel beam according to the embodiment of the present invention;
fig. 4 is a schematic view illustrating an installation structure of a concrete slab and a steel beam according to an embodiment of the present invention.
In the figure, 1, a platform is prefabricated; 2. a bolt shank; 3. a nut; 4. a gasket; 5. an inner nut; 6. a nut; 7. a concrete slab; 8. a steel beam.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
An embodiment of a connection structure of a concrete slab and a steel beam of the invention, as shown in fig. 1-4, comprises a steel beam 8, a prefabricated platform 1 and a plurality of bolt rods 2 arranged on the prefabricated platform 1, wherein one end of each bolt rod 2 is provided with a nut 3, one end of each nut 3 of each bolt rod 2 is provided with a gasket 4, each gasket 4 is made of steel, and each gasket 4 penetrates through each bolt rod 2 and is adhered to the lower part of each nut 3; interior nut 5 is installed to the lower part of shank of bolt 2, and the lower extreme downwardly extending of shank of bolt 2 extends prefabricated platform 1, and the lower extreme of shank of bolt 2 can be dismantled and be connected with nut 6, and nut 6 is used for fixed shank of bolt 2 and prefabricated platform 1, and the downside butt of interior nut 5 is on prefabricated platform 1, and the position of shank of bolt 2 can be fixed to nut 5 in the installation, avoids shank of bolt 2 to appear the skew at concrete placement in-process, ensures the validity that shank of bolt 2 prestretches the force. The concrete slab 7 higher than the bolt rod 2 is poured on the precast platform 1, the bolt rod 2, the screw cap 3 and the inner nut 5 on the upper portion of the precast platform 1 are completely poured in the concrete slab 7, the tightness of the concrete slab 7 and the bolt rod 2 is improved, and the friction force and the shearing force between the bolt rod 2 and the concrete slab 7 are increased.
In this application, concrete slab 7 pours after accomplishing, dismantles nut 6, then moves out prefabricated platform 1, moves concrete slab 7 and 2 combination of shank of bolt to the installation department of girder steel 8 like this, utilizes the mounting hole installation concatenation of the lower extreme of shank of bolt 2 and the reservation on the girder steel 2, then mounting nut 6 is with fixed girder steel 8 and shank of bolt 2. In the application, in order to further increase the friction force between the concrete plate 7 and the steel beam 8 and form a resultant force with the shearing resistance of the bolt rod 2, the inner nut 5 is made of a rubber plastic material, so that when the bolt rod 2 moves downwards, the bolt rod 2 is driven to drive the inner nut 5 to move and break or fracture, the vertical constraint of the inner nut 5 on the bolt rod 2 is removed, then the bolt rod 2 can move downwards, pressure is fully provided for the concrete plate 7, and the friction force between the concrete plate 7 and the steel beam 8 is greatly improved; the bolt rod 2 is poured into the concrete plate 7, and the concrete plate 7 is connected with the bolt rod 2 in a seamless mode, so that the friction force between the concrete plate and the steel beam and the shearing resistance of the screw rod form resultant force which is jointly used for resisting the sliding between the concrete plate 7 and the steel beam 2, and the integrity is improved; the connection between the bolt rod 2 and the top plate of the steel beam 8 and the concrete plate 7 of the whole combined structure is firmer and more reliable, so that the beam body has higher integral performance.
Specifically, 2 vertical fixed settings of shank of bolt, interior nut 5 is trapezoidal interior nut for the cross-section, and during concrete installation, trapezoidal upper portion size is less than the lower part size, and trapezoidal upper portion size matches with the diameter of shank of bolt 2, and trapezoidal lower part and 1 butt of prefabricated platform form a supporting frame structure like this, can support shank of bolt 2, and when avoiding pouring concrete slab 7, 2 slopes of shank of bolt and skew, the validity of the power is prestretched to the guarantee shank of bolt 2. In other embodiments, the cross section of the inner nut 5 is not limited to a trapezoidal structure.
In other embodiments of the present application, the cross-section of the inner nut may be rectangular; the rectangular inner nut is provided with a through hole which extends up and down and is used for the bolt rod to pass through, and the lower part of the rectangle is abutted against the prefabricated platform. Or the inner nut can be in a conical structure, the section of the inner nut is triangular, and the bolt rod penetrates through the bottom surface of the triangle from top to bottom.
In this application, shank of bolt 2 is a plurality of, and two shanks of bolt 2 are a pair of, and the quantity of the mounting hole of reserving on the girder steel 8 matches relatively for with girder steel 8 fixed mounting. The concrete plate 7 and the steel beam 8 for installing the bolt rod 2 can be pre-processed, and can be directly assembled and used when in use, so that the construction period of processing and assembling is saved, and standardized construction can be realized. The gasket 4 can distribute the stress of the bolt rod 2 on the concrete plate 7, and avoid the local damage of the concrete plate 7 caused by stress concentration, thereby causing the loss of the pretension force of the bolt rod 2. After the concrete slab 7 of this application was accomplished, make the thread of interior nut 5 break through when screwing up nut 6, removed interior nut 5 and to the vertical restraint of shank of bolt 2 to make shank of bolt 2 can be together with gasket 4 downstream, fully bring pressure for concrete slab 7, improve frictional force between concrete slab 7 and the girder steel 8 by a wide margin.
The utility model provides an inner bolt of concrete slab and mounting structure of girder steel is fixed, makes the clearance between bolt hole and the shank of bolt little, can utilize the frictional force between concrete slab and the girder steel to form resultant force with the self shearing resistance of shank of bolt, the slippage is little, and the high-usage of screw rod makes the composition surface connect reliably, and structural rigidity is high, and the bolt quantity is little, and the bolt hole precision requirement is not high, reduces concrete slab manufacture craft, and assembly construction is convenient, and the cost is low.
The embodiment of the installation method of the concrete plate and the steel beam comprises the following steps: s1, installing a gasket at the nut of the bolt rod, wherein the diameter of the gasket is larger than that of the bolt rod; an inner nut made of rubber and plastic materials is arranged on the bolt rod;
s2, one end of the bolt rod, which is far away from the nut, penetrates through a bolt hole reserved on the prefabricated platform, and a nut is installed to fix the bolt rod;
s3, pouring concrete on the prefabricated platform, wherein the pouring height is higher than the height of the bolt rod;
s4, after the concrete slab is solidified, removing the nut and the prefabricated platform, and moving the concrete slab to a place to be installed;
and S5, assembling the steel beam and the concrete slab, enabling the bolt rod to penetrate through a reserved mounting hole on the steel beam, mounting a nut fixing bolt at the end part of the lower end of the bolt, and enabling the nut to drive the bolt to move downwards until the bolt extrudes the inner nut, so that the inner nut is broken or cracked.
The bolt rod is vertically arranged, the cross section of the inner nut is trapezoidal, the size of the upper portion of the trapezoid is smaller than that of the lower portion of the trapezoid, the size of the upper portion of the trapezoid is matched with the diameter of the bolt rod, and the lower portion of the trapezoid is abutted to the prefabricated platform.
The number of the bolt rods is six, and two bolt rods form a pair; the steel beam is provided with a plurality of pairs of mounting holes, every two mounting holes are a pair, and the mounting holes are opposite to the bolt rods.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A connecting structure of a concrete slab and a steel beam is characterized by comprising the steel beam, a prefabricated platform and a plurality of bolt rods arranged on the prefabricated platform, wherein nuts are arranged at the upper ends of the bolt rods, inner nuts and nuts are sequentially arranged at the lower parts of the bolt rods, the prefabricated platform is arranged on the bolt rods between the inner nuts, and the lower parts of the inner nuts are abutted against the prefabricated platform;
a concrete slab with the height higher than that of the bolt rod is poured on the prefabricated platform;
the inner nut is made of rubber and plastic materials, so that when the nut and the prefabricated platform are disassembled and the concrete slab is driven by the nut to be connected with the steel beam, the inner nut is broken or cracked along with the downward movement of the bolt rod.
2. A concrete panel to steel beam connection according to claim 1 wherein the inner nut is trapezoidal in cross section, the upper dimension of the trapezoid being smaller than the lower dimension, the upper dimension of the trapezoid matching the diameter of the bolt shank, the lower portion of the trapezoid abutting the precast platform.
3. A concrete panel to steel beam connection according to claim 1 wherein said inner nut is rectangular in cross-section; and a through hole which extends up and down and is used for the bolt rod to pass through is arranged on the rectangular inner nut, and the lower part of the rectangle is abutted against the prefabricated platform.
4. A concrete panel to steel beam connection as claimed in claim 1 wherein said bolt shank is provided with a washer secured to the bottom of the nut.
5. A concrete panel to steel beam connection as claimed in claim 1 wherein said bolt shank is disposed vertically.
6. A concrete panel to steel beam connection according to claim 1 wherein said bolt bar is plural and two bolt bars are a pair.
7. A method of installing a concrete slab and steel beam, comprising the steps of:
s1, installing a gasket at the nut of the bolt rod, wherein the diameter of the gasket is larger than that of the bolt rod; an inner nut made of rubber and plastic materials is arranged on the bolt rod;
s2, one end of the bolt rod, which is far away from the nut, penetrates through a bolt hole reserved on the prefabricated platform, and a nut is installed to fix the bolt rod;
s3, pouring concrete on the prefabricated platform, wherein the pouring height is higher than the height of the bolt rod;
s4, removing the nuts and the prefabricated platform after the concrete slab is solidified, and moving the concrete slab to a place to be installed;
and S5, assembling the steel beam and the concrete slab, enabling the bolt rod to penetrate through a reserved mounting hole on the steel beam, mounting a nut at the end part of the lower end of the bolt to fix the bolt, and enabling the nut to drive the bolt to move downwards until the bolt extrudes the inner nut, so that the inner nut is broken or cracked.
8. A method of installing a concrete slab and steel beam as claimed in claim 7 wherein said inner nut is trapezoidal in cross section, the upper dimension of said trapezoid being smaller than the lower dimension, the upper dimension of said trapezoid matching the diameter of the bolt shank, the lower portion of said trapezoid abutting the pre-cast platform.
9. A method of installing a concrete panel and steel beam as claimed in claim 7 wherein said bolt shank is disposed vertically.
10. A method of installing a concrete panel and steel beam as claimed in claim 7 wherein said bolt bar is plural, two bolt bars being a pair; the steel beam is provided with a plurality of pairs of mounting holes, every two mounting holes are a pair, and the mounting holes are opposite to the bolt rods.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010006368.4A CN111058543A (en) | 2020-01-03 | 2020-01-03 | Connecting structure and mounting method of concrete slab and steel beam |
| JP2020153625A JP6852935B1 (en) | 2020-01-03 | 2020-09-14 | Connection structure and mounting method of concrete slab and steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010006368.4A CN111058543A (en) | 2020-01-03 | 2020-01-03 | Connecting structure and mounting method of concrete slab and steel beam |
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| CN111058543A true CN111058543A (en) | 2020-04-24 |
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| CN202010006368.4A Pending CN111058543A (en) | 2020-01-03 | 2020-01-03 | Connecting structure and mounting method of concrete slab and steel beam |
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| JP (1) | JP6852935B1 (en) |
| CN (1) | CN111058543A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376699A (en) * | 2020-11-16 | 2021-02-19 | 广州大学 | A intrusive formula bolted connection spare for assembled structure |
| CN112376798A (en) * | 2020-11-09 | 2021-02-19 | 广州大学 | Assembled steel-UHPC beam plate structure based on bolted connection and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113291987A (en) * | 2021-04-30 | 2021-08-24 | 上海建工四建集团有限公司 | Reusable tower crane lifting beam embedded part and construction method |
| CN113585769B (en) * | 2021-08-27 | 2023-07-18 | 中建三局集团有限公司 | Method for installing closed space of assembled bare concrete horizontal member |
| CN115478687B (en) * | 2022-09-19 | 2024-03-29 | 中国建筑第二工程局有限公司 | Inverse bank structure and construction scheme thereof |
| CN115992592B (en) * | 2023-02-16 | 2024-03-05 | 江苏镇淮建设集团有限公司 | Platform beam assembly type positioning sleeve frame system and application method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5768436A (en) * | 1980-10-17 | 1982-04-26 | Tokyo Shibaura Electric Co | Construction of building |
| JP3952566B2 (en) * | 1997-12-19 | 2007-08-01 | 石川島播磨重工業株式会社 | Semi-prefabricated slab |
| JP2003020730A (en) * | 2001-07-10 | 2003-01-24 | Meidensha Corp | Insert instrument |
| JP2005061081A (en) * | 2003-08-13 | 2005-03-10 | Shimizu Corp | Joint structure of pre-cast slab, and joining method thereof |
| CN107023114B (en) * | 2017-06-19 | 2019-03-26 | 四川大学 | A kind of combination beam of the connector and its composition of steel and concrete combined structure |
| CN109267654B (en) * | 2018-09-26 | 2021-09-14 | 重庆普珞沃建筑科技有限公司 | Combined prefabricated arch bottom plate and superposed arch plate |
-
2020
- 2020-01-03 CN CN202010006368.4A patent/CN111058543A/en active Pending
- 2020-09-14 JP JP2020153625A patent/JP6852935B1/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376798A (en) * | 2020-11-09 | 2021-02-19 | 广州大学 | Assembled steel-UHPC beam plate structure based on bolted connection and manufacturing method thereof |
| CN112376699A (en) * | 2020-11-16 | 2021-02-19 | 广州大学 | A intrusive formula bolted connection spare for assembled structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6852935B1 (en) | 2021-03-31 |
| JP2021110222A (en) | 2021-08-02 |
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