CN207878256U - A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam - Google Patents
A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam Download PDFInfo
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- CN207878256U CN207878256U CN201820254360.8U CN201820254360U CN207878256U CN 207878256 U CN207878256 U CN 207878256U CN 201820254360 U CN201820254360 U CN 201820254360U CN 207878256 U CN207878256 U CN 207878256U
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Abstract
It puts more energy into shaped steel case concrete combination beam and its construction method the utility model discloses a kind of prestressing force PBL, and in particular to composite structure technical field.It provides a kind of to stronger, the better combination beam of load-carrying properties of concrete constraint, the web and bottom plate form the chamber for fill concrete, it is openning shape at the top of the chamber, the web inner surface and plate upper surface are both provided with PBL ribbed stiffeners, it is connected by lateral pull rod between the corresponding PBL ribbed stiffeners of chamber compressive region, chamber tensile region both sides of the edge are provided with axial presstressed reinforcing steel.The collective effect of PBL ribbed stiffeners and pull rod can effectively improve degree of restraint of the chamber to concrete, avoid that local buckling occurs, and reduce the cavity areas of concrete and chamber and then reduce interface sliding；Presstressed reinforcing steel is arranged in chamber tensile region, can significantly improve bearing capacity and bending stiffness, the later stage bearing capacity for making combination beam have preferable anti-seismic performance and stablize, and span is applicable in increase structure.
Description
Technical field
The utility model is related to composite structure technical fields, and in particular to a kind of prestressing force PBL puts more energy into shaped steel case concrete
Combination beam.
Background technology
Concrete filled steel tube axis is pressed and small biasing member has been widely studied, and correlation theory reaches its maturity, and is mainly used in work
In industry, civil buildings and bridge structure.And it is relatively fewer to the research of Tubes Members Subjected To Bending (beam), in Practical Project field
Application it is even more rare.Although correlative study result shows concrete-filled rectangular steel tube beam and is carried with good ductility and later stage
Power, but through studying analysis and summary, concrete-filled rectangular steel tube should not be used as flexural member (beam), mainly have the disadvantage that：By
It draws area's concrete that cannot play a role and increases dead weight, compressive region steel pipe is constrained not strong and is only equipped in angular position to concrete
Constraint, concrete are easy to come to nothing with steel pipe, and part occurs outward for compressive region steel pipe top plate and web in the wrong when more than a constant load
Song, concrete slide larger along longitudinal direction with steel pipe；Additionally due to beam is horizontal member and steel pipe is silent section, concrete pours
It builds cumbersome and requires self-compacting concrete, cannot be with Bars In Poured Concrete Slab Pouring concrete at the same time, beam and floor concertedness are poor, while steel pipe
It is difficult to welding for silent section weld joint on inner side.Therefore, seldom that concrete filled steel tube is straight as flexural member in Practical Project
Connect use.To sum up, the existing following problem of rectangular steel tube with concrete infilled generally existing：The first, compressive region steel pipe is to mixed
The constraint for coagulating soil is not strong, and local buckling easily occurs, and concrete and steel pipe interface sliding are larger, and steel and concrete material cooperate with work
The property made is poor；The second, concrete in tension zone cannot play a role and increase dead weight；Third, concreting is cumbersome and requires from close
Real concrete, cannot be with Bars In Poured Concrete Slab Pouring concrete at the same time.
Utility model content
The technical problem to be solved by the utility model is to provide it is a kind of to concrete constrain it is stronger, load-carrying properties are better
A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam.
Technical solution adopted by the utility model to solve its technical problems is：A kind of prestressing force PBL shaped steel case of putting more energy into is mixed
Solidifying soil combination beam, including web and bottom plate, the web and bottom plate form the chamber for fill concrete, the chamber top
For openning shape, the web inner surface and plate upper surface are both provided with PBL ribbed stiffeners, and the chamber compressive region is corresponding
It is connected by lateral pull rod between PBL ribbed stiffeners, chamber tensile region is provided with axial presstressed reinforcing steel.
Further, the width of the PBL ribbed stiffeners is 5~10cm, and the Circularhole diameter size of the PBL ribbed stiffeners is width
The half of size is spent, the spacing between adjacent PBL ribbed stiffeners circular hole is 5~8cm.
Further, the pull rod is hot rolled ribbed bars, and the diameter of pull rod is more than 6mm, the spacing between adjacent pull rod
For 15~30cm.
Further, between the pull rod and PBL ribbed stiffeners using be welded to connect, be bolted or pin connection.
The utility model has the beneficial effects that：Prestressing force PBL puts more energy into shaped steel case concrete combination beam, is arranged in chamber inner wall
PBL ribbed stiffeners reduce the cavity areas of compressive region concrete and chamber plate, improve the compression strength of core concrete, case
Connecting rod between the corresponding PBL ribbed stiffeners of room compressive region, prevents PBL ribbed stiffeners to be pulled out, further increases chamber to coagulation
The degree of restraint of soil avoids that local buckling occurs, reduces the interface sliding between chamber wall and concrete；Chamber tensile region is set
Presstressed reinforcing steel is set, the bearing capacity and bending stiffness of combination beam can be significantly improved, makes combination beam that there is preferable anti-seismic performance and steady
Fixed later stage bearing capacity, to increase the applicable span of structure.
Description of the drawings
Fig. 1 is the cross-sectional view of the utility model；
Fig. 2 is the utility model (being not filled by concrete) schematic top plan view；
As shown in the figure：1- webs；2- bottom plates；3-PBL ribbed stiffeners；4- pull rods；5- presstressed reinforcing steels.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, a kind of prestressing force PBL of the utility model puts more energy into shaped steel case concrete combination beam, including abdomen
Plate 1 and bottom plate 2, the web 1 and bottom plate 2 form the chamber for fill concrete, are openning shape at the top of the chamber, described
1 inner surface of web and 2 upper surface of bottom plate are both provided with PBL ribbed stiffeners 3, the corresponding PBL ribbed stiffeners of the chamber compressive region 3
Between be connected by lateral pull rod 4, chamber tensile region is provided with axial presstressed reinforcing steel 5.
Laterally indicate the width direction of beam, the axial span direction for indicating beam, the compressive region and tensile region refer to by curved
For component when bearing upper load work, neutral axis part below is called tensile region；On the contrary, part more than neutral axis is called
Compressive region.Chamber in the application uses rectangular section steel case, and PBL ribbed stiffeners 3 are arranged on chamber web 1 and bottom plate 2, reduces
The cavity areas of compressive region concrete and chamber plate, improves the compression strength of core concrete, chamber compressive region is corresponding
Connecting rod 4 between PBL ribbed stiffeners 3, prevents PBL ribbed stiffeners 3 to be pulled out, and further increases constraint journey of the chamber to concrete
Degree avoids that local buckling occurs, reduces the interface sliding between chamber wall and concrete；Presstressed reinforcing steel is arranged in chamber tensile region
5, the bearing capacity and bending stiffness of combination beam can be significantly improved, makes combination beam that there is preferable anti-seismic performance and the later stage stablized to hold
Loading capability, to increase the applicable span of structure.
The width of the PBL ribbed stiffeners 3 is 5~10cm, and the Circularhole diameter size of the PBL ribbed stiffeners 3 is width dimensions
Half, the spacing between adjacent 3 circular hole of PBL ribbed stiffeners is 5~8cm.The width of the application PBL ribbed stiffeners 3 uses 8cm, circle
Bore dia uses 4cm, the spacing 7cm between adjacent circular holes.It can fully ensure that chamber and the globality of concrete, connection is more
Closely.
The pull rod 4 is hot rolled ribbed bars, and the diameter of pull rod 4 is more than 6mm, the spacing between adjacent pull rod 4 is 15~
30cm.The application pull rod 4 directly uses 8cm, and the spacing between adjacent pull rod 4 is 20cm.The setting of pull rod 4 can effectively increase
The constraint of big concrete and chamber, reduces the degree of local buckling, and concrete is made to be not readily separated reduction between each other with chamber wall
Sliding.
Between the pull rod 4 and PBL ribbed stiffeners 3 using be welded to connect, be bolted or pin connection.The application is using weldering
The mode connect in succession, welding quality are easier to be guaranteed, and stress performance is more reasonable, and comprehensive economic performance is more preferable.
Claims (4)
- The shaped steel case concrete combination beam 1. a kind of prestressing force PBL puts more energy into, it is characterised in that：Including web (1) and bottom plate (2), institute It states web (1) and bottom plate (2) forms the chamber for being used for fill concrete, be openning shape at the top of the chamber, the web (1) is interior Surface and bottom plate (2) upper surface are both provided with PBL ribbed stiffeners (3), the corresponding PBL ribbed stiffeners (3) of chamber compressive region Between be connected by lateral pull rod (4), chamber tensile region is provided with axial presstressed reinforcing steel (5).
- The shaped steel case concrete combination beam 2. a kind of prestressing force PBL as described in claim 1 puts more energy into, it is characterised in that：The PBL The width of ribbed stiffener (3) is 5~10cm, and the Circularhole diameter size of the PBL ribbed stiffeners (3) is the half of width dimensions, adjacent Spacing between PBL ribbed stiffeners (3) circular hole is 5~8cm.
- The shaped steel case concrete combination beam 3. a kind of prestressing force PBL as described in claim 1 puts more energy into, it is characterised in that：The drawing Bar (4) is hot rolled ribbed bars, and the diameter of pull rod (4) is more than 6mm, and the spacing between adjacent pull rod (4) is 15~30cm.
- The shaped steel case concrete combination beam 4. a kind of prestressing force PBL as described in claim 1 puts more energy into, it is characterised in that：The drawing Using being welded to connect, be bolted or pin is connect between bar (4) and PBL ribbed stiffeners (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254360.8U CN207878256U (en) | 2018-02-12 | 2018-02-12 | A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254360.8U CN207878256U (en) | 2018-02-12 | 2018-02-12 | A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam |
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| CN207878256U true CN207878256U (en) | 2018-09-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360361A (en) * | 2018-02-12 | 2018-08-03 | 攀枝花学院 | A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam and its construction method |
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2018
- 2018-02-12 CN CN201820254360.8U patent/CN207878256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360361A (en) * | 2018-02-12 | 2018-08-03 | 攀枝花学院 | A kind of prestressing force PBL puts more energy into shaped steel case concrete combination beam and its construction method |
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