CN209798514U - Structure for connecting steel upright post and concrete bearing platform - Google Patents
Structure for connecting steel upright post and concrete bearing platform Download PDFInfo
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- CN209798514U CN209798514U CN201920366265.1U CN201920366265U CN209798514U CN 209798514 U CN209798514 U CN 209798514U CN 201920366265 U CN201920366265 U CN 201920366265U CN 209798514 U CN209798514 U CN 209798514U
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Abstract
The utility model provides a structure for connecting a steel upright post and a concrete bearing platform, which comprises a bearing platform, wherein a bearing plate is arranged on the bearing platform; the method comprises the following steps that a plurality of longitudinally distributed tensile pre-buried steel plates are pre-buried in a bearing platform, the tensile pre-buried steel plates are distributed on the inner sides of four corners and four sides of the cross section of the bearing platform, the width of the tensile pre-buried steel plates distributed on the inner sides of the four corners of the cross section of the bearing platform is smaller than that of the tensile pre-buried steel plates distributed on the inner sides of the four sides of the cross section of the bearing platform, and the tensile pre-buried steel plates on the inner sides of the four corners of; mounting positions are longitudinally distributed on the tensioned pre-buried steel plate, and shear force keys are mounted on the mounting positions; the bearing plate is provided with steel upright posts, and the longitudinally distributed tensile pre-embedded steel plates are fixedly connected through connecting section steel. The utility model discloses connection structure self rigidity is good, is difficult for receiving concrete placement stirring deformation, even if take place small deformation not influence with the upper portion stand be connected, it is more convenient to be under construction.
Description
Technical Field
the utility model relates to a bridge construction technical field especially relates to a structure that steel stand and concrete cushion cap are connected.
Background
The steel structure is a common structural form in a bridge structure, and has the technical advantages of high material performance, light structure, small rigidity, convenience in on-site welding and assembling and the like. For the fixed pier which is relatively unfavorable in stress in a part of large-span door piers or a connecting bridge, if the steel upright post is adopted, the unfavorable bending moment of the pier can be reduced under the condition that the appearance of the upright post is not increased due to the reduction of the structural rigidity, and the bearing capacity of the structure can be greatly improved due to high material performance.
Since the cap is usually of a concrete structure, if steel studs are used, the problem of how to connect the steel studs with the concrete cap beam is faced. At present, a common solution is to pre-embed a plurality of screws in a bearing platform, and a pressure-bearing chassis is arranged at the connecting end of an upright post to form a force-transferring flange plate together with the screws in an anchoring manner. Considering that the screw rod is easy to shift when the concrete structure is poured, the mounting hole of the chassis is difficult to align with each screw rod, the structural force transmission performance of the screw rod as the transmission pulling force is greatly related to the preload of the screw cap, the core of the process needs to ensure that the construction preload degree of the screw cap is consistent and no damage occurs, and the number of connection risk control points is large.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the technical purpose of the utility model is to provide an adopt the healthy transmission pulling force of shear force, bearing plate transmission pressure, the atress performance is clear and definite, can make things convenient for a steel stand and the structure that concrete cushion cap is connected pre-buried and be connected.
In order to achieve the technical purpose, the utility model provides a structure for connecting a steel upright post and a concrete bearing platform, which comprises a bearing platform, wherein a bearing plate is arranged on the bearing platform, and the cross section of the bearing plate is contained in the cross section of the bearing platform; the bearing platform is internally embedded with a plurality of longitudinally distributed tensile embedded steel plates, the tensile embedded steel plates are distributed at the inner sides of four corners and four sides of the cross section of the bearing platform, the width of the tensile embedded steel plates distributed at the inner sides of the four corners of the cross section of the bearing platform is smaller than that of the tensile embedded steel plates distributed at the inner sides of the four sides of the cross section of the bearing platform, the tensile embedded steel plates at the inner sides of the four corners of the cross section of each two distributed bearing platforms relatively form an included angle in the direction of 90 degrees, and the arrow direction of the included angle points to the corner direction of; the tensile embedded steel plate is longitudinally distributed with installation positions, the installation positions are provided with shear force keys, and the shear force keys penetrate through the tensile embedded steel plate; the bearing plate is provided with steel upright posts, and the tensile pre-buried steel plates which are longitudinally distributed are fixedly connected through connecting section steel.
Preferably, a plurality of stiffening steel plates are fixed between the bottom of the steel upright and the bearing platform, and the stiffening steel plates are uniformly distributed around the steel upright.
Preferably, the shear key is installed by using a perforated plate connecting piece.
Preferably, the shear key is installed by a channel steel connecting piece.
Preferably, the shear key is installed by a bent rib connecting piece.
Preferably, the shear key is mounted by a stud connector.
Preferably, the cross sections of the bearing platform and the bearing plate are rectangular.
preferably, the upper surface of the bearing plate is flush with the upper surface of the bearing platform.
The utility model has the advantages that:
1. The connecting structure transmits pressure through the bearing plate, and transmits pulling force through the tensile pre-buried steel plate and the shear key. The force transmission path is clear, and a structural stress model is conveniently established to carry out structural design;
2. The steel upright post, the bearing plate, the tensile pre-buried steel plate and the shear key can be connected by welding, the force transmission is clear, the connection performance is reliable, and the tensile pre-buried steel plate can exert the bearing capacity to the maximum extent by the ductility performance when the steel structure is stressed unevenly in consideration of strong ductility of the steel structure;
3. Connection structure self rigidity is good, is difficult for receiving concrete placement stirring deformation, even if take place small deformation not influence with the connection of upper portion stand, it is more convenient to be under construction.
drawings
Fig. 1 is a schematic side view of the present invention;
Fig. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of a shear force position of the present invention;
Fig. 4 is a schematic diagram of the force transmission mode of the present invention.
in the figure, 1, a bearing platform; 2. a pressure bearing plate; 3. pre-burying a steel plate in a tensioned manner; 4. a shear force is strong; 5. a steel upright post; 6. a stiffened steel plate; 7. and connecting the section steel.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Referring to fig. 1 to 3, the structure for connecting a steel column and a concrete bearing platform of the present invention includes a bearing platform 1, a bearing plate 2, a tension pre-embedded steel plate 3, a shear key 4 and a steel column 5.
The cross section of the bearing platform 1 is rectangular, a bearing plate 2 is fixedly installed on the upper surface of the bearing platform 1, the bearing plate 2 bears pressure and transmits compressive stress to the bearing platform 1, the cross section of the bearing plate 2 is also rectangular and contained in the cross section of the bearing platform 1, the upper surface of the bearing plate 2 is flush with the upper surface of the bearing platform 1, and a plurality of longitudinally distributed tensile embedded steel plates 3 are embedded in the bearing platform 1.
The tension embedded steel plates 3 are distributed on the inner sides of four corners and four sides of the cross section of the bearing platform 1, the width of the tension embedded steel plates 3 distributed on the inner sides of the four corners of the cross section of the bearing platform 1 is smaller than that of the tension embedded steel plates 3 distributed on the inner sides of the four sides of the cross section of the bearing platform 1, an included angle of 90 degrees is formed between the tension embedded steel plates 3 distributed on the inner sides of the four corners of the cross section of the bearing platform 1, and the arrow direction of the included angle points to the corner direction of the cross section corresponding to the bearing platform.
The tension embedded steel plate 3 is longitudinally distributed with installation positions, the installation positions are fixedly provided with shear studs 4, the shear studs 4 penetrate through the tension embedded steel plate 3, the tension embedded steel plate 3 bears tension, and the tension is converted into shear force through the shear studs 4 and transmitted to the bearing platform 1.
The bearing plate 2 is welded with steel columns 5, the longitudinally distributed tension embedded steel plates 3 are fixedly connected through connecting section steel 7 or connecting reinforcing steel bars, so that the structure is not easy to deform in the concrete pouring process, and meanwhile, partial tension can be transmitted to the bearing platform 3 through the connecting section steel 7.
A plurality of stiffening steel plates 6 are fixedly welded between the bottom of the steel upright post 5 and the bearing platform 1, the pressure transmission capacity of the steel upright post is increased, and the stiffening steel plates 6 are uniformly distributed around the steel upright post 5.
In this embodiment, the shear key may be in the form of a plurality of shear connectors, such as a perforated plate connector, a channel steel connector, a bent rib connector, and a stud connector.
The utility model discloses can be with bearing plate 2 earlier in the work progress, the pre-buried steel sheet 3 of tension, the shear force is strong 4 pre-buried when the cushion cap construction, treat that the cushion cap construction is accomplished the back, welded connection steel stand 5 can be pre-buried with the synchronous preparation of part steel stand 5 and connection structure, welded connection remaining steel stand 5 again.
Referring to fig. 4, under the action of a bending moment M and an axial force F, an acting force of the steel upright 5 on the bearing platform 1 is converted into a transmission pressure F1 through the bearing plate 2, a transmission tension F2 is transmitted through the tension embedded steel plate 3, and the tension embedded steel plate 3 converts the tension into F2 through the shear key 4.
as a variation on this patent embodiment, the size of the connection structure can be adjusted according to actual needs.
As a variation of the present patent embodiment, the specific configuration of the tension embedded steel plate 3 can be adjusted according to the need, including the structural configuration form, the specific size, etc., as long as the need of the tension bearing capacity can be satisfied.
As a transformation of this patent embodiment, the form of shear force key 4 can be transformed as required, can adopt multiple shear connectors forms such as trompil board connecting piece, channel-section steel connecting piece, as long as have enough bearing capacity can convert pulling force F2 into F2 and transmit for the cushion cap body.
As a transformation of the embodiment of the present patent, the connection section steel or the connection steel bar can be welded between the tensioned pre-buried steel plates 3 to increase the stability of the pre-buried part, as long as the tensile force that the connection section steel or the connection steel bar can transmit plus the tensile force that the shear key can transmit is not lower than F2.
The above description of the embodiments is not intended to limit the scope of the present patent disclosure, and therefore, the present patent disclosure is not limited to the above embodiments, and any modifications and improvements made according to the present patent disclosure are considered to fall within the scope of the present patent disclosure, provided that the connection structure includes a design for converting the column force into the tension and compression force, the compression force transmitting through the bearing plate, the tension force transmitting through the tension embedment and the shear force transmitting through the tension embedment.
Claims (9)
1. The utility model provides a structure that steel stand and concrete cushion cap are connected which characterized in that: the tension embedded steel plate fixing device comprises a bearing platform (1), wherein bearing plates (2) are installed on the bearing platform (1), a plurality of tension embedded steel plates (3) are arranged in the bearing platform (1), the tension embedded steel plates (3) are distributed on the inner sides of four corners and four sides of the cross section of the bearing platform (1), the width of the tension embedded steel plates (3) distributed on the inner sides of the four corners of the cross section of the bearing platform (1) is smaller than that of the tension embedded steel plates (3) distributed on the inner sides of the four sides of the cross section of the bearing platform (1), and the tension embedded steel plates (3) on the inner sides of the four corners of the cross section of each two bearing platforms (1) relatively; the tensile embedded steel plate (3) is longitudinally distributed with installation positions, the installation positions are provided with shear force keys (4), and the shear force keys (4) penetrate through the tensile embedded steel plate (3); the bearing plate (2) is provided with steel columns (5), and the tension embedded steel plates (3) which are longitudinally distributed are fixedly connected through connecting section steel (7).
2. The structure of claim 1, wherein the steel column is connected to the concrete cap: a plurality of stiffening steel plates (6) are fixed between the bottom of the steel upright post (5) and the bearing platform (1), and the stiffening steel plates (6) are uniformly distributed around the steel upright post (5).
3. The structure of claim 1, wherein the steel column is connected to the concrete cap: the shear force key (4) is installed by adopting a perforated plate connecting piece.
4. The structure of claim 1, wherein the steel column is connected to the concrete cap: the shear key (4) is installed by adopting a channel steel connecting piece.
5. the structure of claim 1, wherein the steel column is connected to the concrete cap: the shear force key (4) is installed by adopting a bent rib connecting piece.
6. The structure of claim 1, wherein the steel column is connected to the concrete cap: the shear force key (4) is installed by adopting a stud connecting piece.
7. The structure of claim 1, wherein the steel column is connected to the concrete cap: the cross section of the bearing plate (2) is contained in the cross section of the bearing platform (1).
8. The structure of claim 1, wherein the steel column is connected to the concrete cap: the cross sections of the bearing platform (1) and the bearing plate (2) are rectangular.
9. The structure of claim 1, wherein the steel column is connected to the concrete cap: the upper surface of the bearing plate (2) is flush with the upper surface of the bearing platform (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366265.1U CN209798514U (en) | 2019-03-21 | 2019-03-21 | Structure for connecting steel upright post and concrete bearing platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920366265.1U CN209798514U (en) | 2019-03-21 | 2019-03-21 | Structure for connecting steel upright post and concrete bearing platform |
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| Publication Number | Publication Date |
|---|---|
| CN209798514U true CN209798514U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920366265.1U Active CN209798514U (en) | 2019-03-21 | 2019-03-21 | Structure for connecting steel upright post and concrete bearing platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811650A (en) * | 2019-03-21 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | The structure that steel column is connect with concrete bearing platform |
-
2019
- 2019-03-21 CN CN201920366265.1U patent/CN209798514U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811650A (en) * | 2019-03-21 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | The structure that steel column is connect with concrete bearing platform |
| CN109811650B (en) * | 2019-03-21 | 2024-03-12 | 上海市城市建设设计研究总院（集团）有限公司 | Structure for connecting steel upright post with concrete bearing platform |
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