CN214144845U - Connecting structure of newly-added reinforced concrete beam and existing reinforced concrete beam - Google Patents
Connecting structure of newly-added reinforced concrete beam and existing reinforced concrete beam Download PDFInfo
- Publication number
- CN214144845U CN214144845U CN202022802935.5U CN202022802935U CN214144845U CN 214144845 U CN214144845 U CN 214144845U CN 202022802935 U CN202022802935 U CN 202022802935U CN 214144845 U CN214144845 U CN 214144845U
- Authority
- CN
- China
- Prior art keywords
- reinforced concrete
- newly
- steel
- concrete beam
- existing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a connecting structure of a newly-added reinforced concrete beam and an existing reinforced concrete beam, which consists of the newly-added reinforced concrete beam, the existing reinforced concrete beam, a steel hanging plate, a steel supporting plate, a vertical rib and an anchor bolt; the newly-added reinforced concrete beam is connected with the existing reinforced concrete beam by using embedded steel bars, and the steel hanging plate is fixed on the existing reinforced concrete beam through anchor bolts; the steel supporting plate is tightly attached to the bottom face of the newly-added reinforced concrete beam and is welded with the steel hanging plate, and the vertical ribs are respectively welded with the side face of the steel hanging plate and the bottom face of the steel supporting plate. The utility model provides a because new, old reinforced concrete roof beam boundary surface concrete combine inseparable and the vertical unreliable problem that shears that brings, provide a more reliable vertical shear force transmission route to transmit vertical shear force to existing reinforced concrete roof beam by newly-increased reinforced concrete roof beam effectively, improved the structural safety degree, the beam-ends that is particularly useful for newly-increased reinforced concrete roof beam has the condition of great vertical shear force.
Description
Technical Field
The utility model belongs to the building structure field, concretely relates to connection structure of newly-increased reinforced concrete roof beam and existing reinforced concrete roof beam. The structure provides a new force transmission path for the vertical shearing force of the beam end, can effectively transmit the vertical shearing force to the existing reinforced concrete beam from the newly-added reinforced concrete beam, improves the structural safety degree, and is particularly suitable for the condition that the beam end of the newly-added reinforced concrete beam has larger vertical shearing force.
Background
In recent years, it has become common that a user changes the use function of a building, and this includes a large number of cases where it is necessary to increase or decrease the number of beam and column members. For newly-added beam members, the traditional method is only to carry out bar planting treatment, but due to the natural shrinkage effect existing when concrete is hardened, the respective concrete ages of the new reinforced concrete beam and the old reinforced concrete beam are asynchronous, so that the concrete at the interface of the new reinforced concrete beam and the old reinforced concrete beam is difficult to realize tight combination, the risk of slippage and cracking exists under the action of shearing force, and the potential safety hazard exists.
Disclosure of Invention
An object of the utility model is to provide a connection structure of newly-increased reinforced concrete roof beam and existing reinforced concrete roof beam compares with the traditional approach that only carries out the bar planting and handle, the utility model provides a more reliable vertical shear force transmission path, the beam-ends that are particularly useful for newly-increased reinforced concrete roof beam have the condition of great vertical shear force.
The utility model adopts the following technical proposal: a connecting structure of a newly-added reinforced concrete beam and an existing reinforced concrete beam comprises the newly-added reinforced concrete beam, the existing reinforced concrete beam, a steel hanging plate, a steel supporting plate, vertical ribs and anchor bolts; the newly-added reinforced concrete beam is connected with the existing reinforced concrete beam by using embedded steel bars, and the steel hanging plate is fixed on the existing reinforced concrete beam through anchor bolts; the steel supporting plate is tightly attached to the bottom face of the newly-added reinforced concrete beam and is welded with the steel hanging plate, and the vertical ribs are respectively welded with the side face of the steel hanging plate and the bottom face of the steel supporting plate.
The utility model discloses the steel link plate that requires is the U shaped steel board that the L type was buckled for one in the off-plane direction, and the L type horizontal segment of steel link plate is hugged closely in existing reinforced concrete roof beam top surface, and the vertical section of L type of steel link plate is towards newly-increased reinforced concrete roof beam place side, hugs closely existing reinforced concrete roof beam side. The area of the horizontal section of the steel hanging plate is determined according to the local compressive strength of the existing reinforced concrete beam to prevent the existing reinforced concrete beam from being locally crushed, and the tensile strength of the vertical section of the steel hanging plate is not less than the vertical shearing force of the newly added reinforced concrete beam at the interface of the new reinforced concrete beam and the old reinforced concrete beam.
The utility model discloses require the area of steel layer board to confirm according to the local compressive strength of newly-increased reinforced concrete roof beam, prevent the local conquassation of newly-increased reinforced concrete roof beam.
The utility model discloses require that the vertical shear strength of vertical rib should not be less than newly-increased reinforced concrete beam at the vertical shear force of new, old reinforced concrete beam interface department, the horizontal interval of vertical rib still should satisfy the pressurized stability requirement of steel support plate, and the cross sectional shape of vertical rib includes but not limited to triangle-shaped, trapezoidal.
The utility model discloses the crab-bolt that requires can adopt the anchor mode on existing reinforced concrete roof beam, also can adopt on the peripheral floor of existing reinforced concrete roof beam to wearing the mode of anchor.
The utility model discloses the superiority of technique lies in: compared with the traditional method only carrying out bar planting treatment, the structure solves the problem of unreliable vertical shear resistance caused by untight concrete combination of the interface of the new reinforced concrete beam and the old reinforced concrete beam. This configuration provides a more reliable vertical shear transfer path: newly-increased reinforced concrete roof beam → steel layer board → vertical rib → steel link plate → existing reinforced concrete roof beam to effectively transmit the vertical shear force to existing concrete beam by newly-increased concrete beam, improve the degree of structural safety, be particularly useful for the beam-ends of newly-increased reinforced concrete beam have the condition of great vertical shear force.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is an axonometric view of a part of the components of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-4, the utility model comprises a newly added reinforced concrete beam 1, an existing reinforced concrete beam 2, a steel hanging plate 3, a steel supporting plate 4, a vertical rib 5 and an anchor bolt 6; the newly-added reinforced concrete beam 1 is connected with the existing reinforced concrete beam 2 by adopting embedded steel bars, and the steel hanging plate 3 is fixed on the existing reinforced concrete beam 2 through an anchor bolt 6; the steel supporting plate 4 is tightly attached to the bottom face of the newly-added reinforced concrete beam 1 and is in welded connection with the steel hanging plate 3, and the vertical ribs 5 are respectively in welded connection with the side face of the steel hanging plate 3 and the bottom face of the steel supporting plate 4. The steel hanging plate 3 is a U-shaped steel plate which is bent in an L shape in an out-of-plane direction (namely the U-shaped steel plate is bent in the out-of-plane direction to form the L-shaped steel hanging plate), the L-shaped horizontal section of the steel hanging plate 3 is tightly attached to the top surface of the existing reinforced concrete beam 2, the L-shaped vertical section of the steel hanging plate 3 faces the side where the newly-added reinforced concrete beam 1 is located and is tightly attached to the side surface of the existing reinforced concrete beam 2, the area of the horizontal section of the steel hanging plate 3 is determined according to the local compressive strength of the existing reinforced concrete beam 2, the existing reinforced concrete beam 2 is prevented from being locally crushed, and the tensile strength of the vertical section of the steel hanging plate 3 is not smaller than the vertical shear force of the newly-added reinforced concrete beam 1 at the interface 7 of the new and old reinforced concrete beams. The area of the steel supporting plate 4 is determined according to the local compressive strength of the newly added reinforced concrete beam 1, so that the newly added reinforced concrete beam 1 is prevented from being locally crushed. The vertical shear strength of the vertical rib 5 is not less than the vertical shear strength of the newly-added reinforced concrete beam 1 at the interface 7 between the new reinforced concrete beam and the old reinforced concrete beam, the horizontal distance of the vertical rib 5 also meets the requirement of the steel supporting plate 4 on compression stability, and the cross section of the vertical rib 5 includes but is not limited to a triangle and a trapezoid. The anchor bolts 6 can be anchored on the existing reinforced concrete beam 2 or can be anchored on the floor slabs 8 around the existing reinforced concrete beam 2 in a penetrating way.
Claims (3)
1. The utility model provides a connection structure of newly-increased reinforced concrete roof beam and existing reinforced concrete roof beam which characterized in that: the steel hanging plate consists of a newly added reinforced concrete beam, an existing reinforced concrete beam, a steel hanging plate, a steel supporting plate, a vertical rib and an anchor bolt; the newly-added reinforced concrete beam is connected with the existing reinforced concrete beam by using embedded steel bars, and the steel hanging plate is fixed on the existing reinforced concrete beam through anchor bolts; the steel supporting plate is tightly attached to the bottom face of the newly-added reinforced concrete beam and is welded with the steel hanging plate, and the vertical ribs are respectively welded with the side face of the steel hanging plate and the bottom face of the steel supporting plate.
2. The connecting structure of a newly added reinforced concrete beam and an existing reinforced concrete beam according to claim 1, wherein: the steel link plate is the U shaped steel board that one is the L type in the off-plane direction and buckles, and the L type horizontal segment of steel link plate hugs closely in existing reinforced concrete roof beam top surface, and the vertical section of L type of steel link plate is towards newly-increased reinforced concrete roof beam place side, hugs closely existing reinforced concrete roof beam side.
3. The connecting structure of the newly added reinforced concrete beam and the existing reinforced concrete beam according to claim 1 or 2, wherein: the cross section of the vertical rib is triangular or trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022802935.5U CN214144845U (en) | 2020-11-27 | 2020-11-27 | Connecting structure of newly-added reinforced concrete beam and existing reinforced concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022802935.5U CN214144845U (en) | 2020-11-27 | 2020-11-27 | Connecting structure of newly-added reinforced concrete beam and existing reinforced concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214144845U true CN214144845U (en) | 2021-09-07 |
Family
ID=77567343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022802935.5U Active CN214144845U (en) | 2020-11-27 | 2020-11-27 | Connecting structure of newly-added reinforced concrete beam and existing reinforced concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214144845U (en) |
-
2020
- 2020-11-27 CN CN202022802935.5U patent/CN214144845U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203411898U (en) | Bridge deck with steel and concrete composite structure | |
| CN110005090A (en) | It is a kind of can optimizing stress distribution Self-resetting shear wall | |
| CN103088962B (en) | A kind of pretensioned prestressing reinforced concrete precast beam | |
| CN206337655U (en) | A kind of assembly concrete wallboard and its soft rope anchor ring attachment structure of reinforcement | |
| CN214144845U (en) | Connecting structure of newly-added reinforced concrete beam and existing reinforced concrete beam | |
| CN102852281B (en) | A kind of have the prestressing force precast main beam of shelving breach | |
| CN209179178U (en) | A kind of assembled beam-column node structure positioned at plastic zone energy dissipation | |
| CN114622485B (en) | Pier top cast-in-situ joint structure adopting embedded steel strip and construction method thereof | |
| CN207469749U (en) | A kind of steel reinforced concrete beam forms is without support system erecting device | |
| CN213539798U (en) | Existing concrete column newly-increased concrete beam connection structure | |
| CN202610695U (en) | Corrugated steel web type pre-tensioned prestressed concrete I-type beam | |
| CN214116253U (en) | Reinforcing apparatus of mountain-climbing channel | |
| CN211499306U (en) | Prefabricated assembled concrete shear force wall | |
| CN204738400U (en) | A connected node that is used for increasing equipment that hangs under concrete beam having | |
| CN209211934U (en) | A kind of reinforced steel concrete framed floor structure | |
| CN211498887U (en) | Broken rock soil body cutting slope flexible retaining reinforced structure | |
| CN209179027U (en) | Bracing formula pile beam slab props up fender system | |
| CN202829323U (en) | Two multi-span precast prestressed crane beam | |
| CN206873283U (en) | A kind of monoblock type comb plate type bridge extension joint | |
| CN215364389U (en) | Overhanging type steel overlength wall-attached device | |
| CN207331424U (en) | Steel skeleton prestressed concrete beam | |
| CN205531316U (en) | Plate -girder disconnect -type high formwork chord frame of many big cross -sections of high -rise reinforced concrete structure roof beam | |
| CN218061608U (en) | Concrete beam reinforced structure | |
| CN220848003U (en) | Independent I-steel beam and cantilever plate structure | |
| CN209975863U (en) | Section steel ultra-light concrete member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |