CN212897180U - End plate connection type prefabricated reinforced concrete beam - Google Patents
End plate connection type prefabricated reinforced concrete beam Download PDFInfo
- Publication number
- CN212897180U CN212897180U CN202021983559.8U CN202021983559U CN212897180U CN 212897180 U CN212897180 U CN 212897180U CN 202021983559 U CN202021983559 U CN 202021983559U CN 212897180 U CN212897180 U CN 212897180U
- Authority
- CN
- China
- Prior art keywords
- reinforced concrete
- shaped steel
- end plate
- main body
- steel
- 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
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The end plate connection type prefabricated reinforced concrete beam is characterized in that longitudinal steel bars are arranged on upper and lower flanges of a reinforced concrete main body, the end part of the reinforced concrete main body is connected with a sealing plate, and studs are welded on the inner side of the sealing plate and fixedly connected in concrete of the reinforced concrete main body; the outer side of the sealing plate is welded with the inner end of the H-shaped steel, and the outer end of the H-shaped steel is welded with the end plate; the shearing force of the end part of the reinforced concrete main body is transmitted to the H-shaped steel through the studs on the sealing plates and then transmitted to the columns through the end plates, and the bending moment of the concrete beam section is transmitted to the H-shaped steel through the longitudinal ribs; a stiffening rib is arranged between the flange and the web of the H-shaped steel; and the longitudinal steel bars pass through the holes of the upper flange and the lower flange of the H-shaped steel and then are bent and attached to the stiffening ribs to form anchoring. The utility model overcomes the complicated, the relatively poor shortcoming of reliability of assembled reinforced concrete structure connected node.
Description
Technical Field
The utility model relates to a civil engineering structural design field, concretely relates to precast reinforced concrete roof beam.
Background
The fabricated building requires factory prefabrication and field assembly construction of structural members, and a mixed frame structure system formed by steel columns (or steel-concrete combined columns) and concrete beams has the advantages of meeting the material design concept of 'strong columns and weak beams', saving steel consumption, good fire and corrosion resistance and the like, but the problems of complex connection, poor reliability and the like exist between the conventional prefabricated reinforced concrete beams and the steel columns (combined columns).
Disclosure of Invention
The utility model discloses overcome prior art's above-mentioned shortcoming, provide an end plate connection type prefabricated reinforced concrete roof beam convenient to be connected with steel column (or combination post).
The utility model discloses an end plate connection type assembled precast reinforced concrete beam, including reinforced concrete main part 1, be equipped with longitudinal reinforcement 2 on the upper and lower edge of a wing of reinforced concrete main part 1, the end connection of reinforced concrete main part 1 is a shrouding 5, and the inboard of shrouding 5 is equipped with the peg 10, and the peg 10 concreties in the concrete of reinforced concrete main part 1; the outer side of the sealing plate 5 is welded with the inner end of the H-shaped steel 6, and the outer end of the H-shaped steel 6 is welded with the end plate 8; the shearing force of the end part of the reinforced concrete main body 1 is transmitted to the H-shaped steel 6 through the stud 10 on the closing plate 5 and then transmitted to the column through the end plate 8, and the bending moment of the concrete beam section is transmitted to the H-shaped steel 6 through the longitudinal bar 2; a stiffening rib 11 is arranged between the flange and the web of the H-shaped steel 6; the longitudinal steel bar 2 passes through the holes of the upper and lower flanges of the H-shaped steel 6 and then is bent and attached to the stiffening rib 11 to form an anchoring structure, as shown in the attached figure 1.
One side near the middle of the reinforced concrete body 1 is the inner side, and the other side is the outer side.
Preferably, the reinforced concrete body 1 is provided with a non-reinforced area stirrup 3 in the middle, and the reinforced concrete body 1 is provided with a reinforced area stirrup 4 near the sealing plate 5.
Preferably, a stiffening rib 7 is arranged between the flange of the H-shaped steel 6 and the end plate 8.
The utility model discloses a precast reinforced concrete roof beam passes through end plate 8 and bolt and is connected with steel column (or combination post), and its connection property is typical steel construction connection, has overcome the complicated, the relatively poor shortcoming of reliability of assembled reinforced concrete structure connected node.
The utility model discloses a both ends of roof beam have the H shaped steel of end plate for a segment, middle reinforced concrete for accounting for the whole span majority of roof beam, the anchor of buckling after the muscle of indulging of concrete beam passes the hole on the H shaped steel edge of a wing, and buckle near the horizontal stiffening rib that sets up H shaped steel at the reinforcing bar, set up the shrouding between H shaped steel and the concrete, precast beam passes through end plate and bolted connection in steel column or steel-concrete combination post and reaches the antidetonation design purpose of "strong post weak beam", the welding peg comes the shear force between transmission concrete and the H shaped steel on the shrouding, accomplish on-the-spot assembly again with the H shaped steel at precast beam both ends and expose the longitudinal reinforcement brush of outside the concrete on fire prevention anticorrosive paint, or wrap up this exposed steel (reinforcing bar and shaped steel) of this part of roof beam with other fire prevention anticorrosive materials such as pea gravel concrete.
The utility model discloses the probably destruction mode of roof beam mainly has reinforced concrete roof beam to receive the bending to destroy, reinforced concrete roof beam shear failure, bolt tension destruction, end plate destruction (plasticity strand mode), bolt shear failure, designs each subassembly such as end plate according to various destruction modes, and the destruction mode control is reinforced concrete roof beam to receive the bending to destroy.
The utility model has the advantages that:
the utility model discloses be applied to the many high-rise frame building structure of assembled that steel column (steel-concrete combination post) and precast reinforced concrete roof beam are constituteed, provided a novel precast reinforced concrete roof beam, a separately overhanging segment H shaped steel in roof beam both ends, and the H shaped steel both sides are equipped with tip and shrouding. And (4) carrying out reinforcement design on the beam according to the internal force of the member calculated by the integral structure. According to the design value M of the bending resistance yield bearing capacity of the H-shaped steelsbyIs greater than the bending resistance bearing capacity M of the reinforced concrete beam calculated according to actual reinforcing barsubAnd designing the section of the H-shaped steel, wherein the height of the section of the H-shaped steel is equal to the net distance between the upper longitudinal bar and the lower longitudinal bar. According to the theoretical value M of the total cross-section yield bending moment of the beam-end H-shaped steelsbuBolt and end plate design was performed. Shear force V calculated according to strong shear and weak bending seismic concept of reinforced concrete beambShear-resistant stud on design closure plateAnd the shear force is fully transferred from the concrete section to the H-shaped steel section.
The utility model can provide a novel precast reinforced concrete beam for an assembled frame structure and provide a design method; the utility model discloses probably solve traditional precast reinforced concrete roof beam and precast steel post (steel-concrete combination post) better and be connected difficult, the problem that the reliability is low.
Drawings
Fig. 1a to 1f are schematic structural views of the novel steel of the present invention, wherein fig. 1a is a side view of the novel precast reinforced concrete beam of the present invention, fig. 1B is a sectional view taken from a-a of fig. 1a, fig. 1C is a sectional view taken from B-B of fig. 1a, fig. 1D is a sectional view taken from C-C of fig. 1a, fig. 1E is a sectional view taken from D-D of fig. 1a, and fig. 1E is a sectional view taken from E-E of fig. 1 a.
Fig. 2 a-2 c are schematic diagrams of end plate cells and related geometric dimensions under different supporting conditions of the present invention, wherein fig. 2a is a cell division when the end plate has no stiffening ribs, fig. 2b is a cell division when the end plate has stiffening ribs only on the overhanging portion, and fig. 2c is a cell division when the end plate has stiffening ribs both on the overhanging portion and inside.
Fig. 3 is a design calculation flowchart of the present invention.
Detailed Description
The technical scheme of the utility model is further explained in the following with the attached drawings. In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Part numbers of the drawings attached to the specification: the reinforced concrete structure comprises a reinforced concrete main body 1, longitudinal steel bars 2, a non-reinforced area stirrup 3, a reinforced area stirrup 4, a sealing plate 5 with notches at the upper and lower edges, H-shaped steel 6, stiffening ribs 7, an end plate 8, a high-strength bolt 9, shear-resistant studs 10 on the sealing plate, stiffening ribs 11 of the H-shaped steel, an end plate cantilever grid area 12, end plate two-side supporting grid areas 13, an end plate rib-free grid area 14 and an end plate three-side supporting grid area 15.
The utility model discloses an end plate connection type assembled precast reinforced concrete roof beam, both ends all have a segment to have the H shaped steel of end plate, and the roof beam passes through the end plate and high strength bolt connects on the frame post, and the muscle of indulging in the roof beam then through the anchor of buckling behind the hole that passes on the H shaped steel edge of a wing. The utility model discloses based on steel construction, concrete structure, building structure basic theory of combatting earthquake, realize the antidetonation design of "strong connected node", "strong post weak beam" through reasonable design. The utility model discloses the probably destruction mode of roof beam mainly has reinforced concrete roof beam to receive the bending to destroy, reinforced concrete roof beam shear failure, bolt tension destruction, end plate destruction (plasticity strand mode), bolt shear failure, designs each subassembly such as end plate according to various destruction modes, and the destruction mode control is reinforced concrete roof beam to receive the bending to destroy.
The utility model discloses a prefabricated reinforced concrete roof beam of end plate connection type, the majority that accounts for the roof beam span in the middle of this roof beam is reinforced concrete main part 1, the overhanging segment both ends in roof beam both ends set up the H shaped steel 6 of end plate 8 and shrouding 5, longitudinal reinforcement 2 in the concrete (set up respectively 4 or 2 usually) through passing near stiffening rib 11 of bending back anchor after the hole opened in advance on the H shaped steel 6 edge of a wing, reinforced concrete main part 1's middle part is equipped with non-encryption district stirrup 3, the concrete beam stirrup that is close to H shaped steel adopts encryption stirrup 4, and the shear force of roof beam passes through the peg 10 on the shrouding 5 and passes H shaped steel 6, the moment of bending of concrete beam section passes through longitudinal reinforcement 2 and passes H shaped steel 6, be connected through end plate 8 and high strength bolt 9 between roof beam and the post. The utility model discloses a precast reinforced concrete roof beam has constituted many high-rise frame building structure of assembled with steel column (or combination column), has strong post weak beam, avoids spot welding, beam column to connect advantages such as reliable. The design calculation method of the beam is provided by using the basic theory of steel structure, concrete structure and structural earthquake resistance.
The structure that reinforced concrete roof beam and steel column (combination column) are constituteed accords with "strong post weak beam" aseismic design theory, and the beam-ends portion stretches out the H shaped steel that a small segment has the end plate and then not only realizes the reliability of connecting (similar steel construction beam-column connection), but also realizes the aseismic design theory of "strong node weak member (roof beam)", and the H shaped steel that the beam-ends portion set up and the shrouding that has welded the peg then realize the aseismic design theory of "strong shear weak bending" easily. Additionally, the utility model discloses a precast beam can adapt to high-rise building well and because of the accumulative error of the post straightness that hangs down probably leads to the actual span of roof beam to be greater than the design span, has overcome the unable bolt end plate connected node's that uses anti-seismic performance good defect of ordinary girder steel in high-rise building structure. During specific construction, only need will the utility model discloses a precast concrete roof beam divides into a big one little two parts roof beam and reserves the post-cast strip at the less quarter span punishment of internal force, installs two sections roof beams respectively and waters after on the post of two sections roof beams sections again and form whole root roof beam. Therefore, the advantage of good anti-seismic performance of the bolt end plate connecting node can be fully exerted.
Above-mentioned novel precast reinforced concrete roof beam that can be used to many high-rise assembled building structure, its design calculation includes following step:
1) step S1, preliminarily determining the section of the reinforced concrete beam according to the basic theory of the concrete structure, designing the reinforcing bars of the concrete beam according to the member internal force enveloping diagram obtained by analyzing and calculating the whole structure, and obtaining the actual bending resistance bearing capacity M of the reinforced concrete beam according to the actual reinforcing bar calculationub；
2) Step S2, according to the bending yield bearing capacity design value M of the beam end part H-shaped steelsbyShould be larger than the beam of reinforced concreteActual bending resistance bearing capacity MubDesigning the section of the H-shaped steel, wherein the height of the section of the H-shaped steel is equal to the net distance between the upper longitudinal bar and the lower longitudinal bar in the concrete beam;
3) step S3, according to the theoretical value M of the total-section yield bending moment of the beam-end H-shaped steelsbuCalculating and determining the total tension T (M) borne by the bolt group near the flange of the H-shaped steelsbu/hb1And designing the bolt: determination of the bolt diameter dbAnd arranged, wherein hb1The distance between the middle and middle flanges of the H-shaped steel at the end part of the beam and the distance between the center of the bolt and the flanges and the web plates of the H-shaped steel meet the minimum operation space required for screwing the bolt during construction;
4) step S4, determining the length and width of the end plate according to the arrangement of the bolts, arranging stiffening ribs on the steel end plate, dividing the steel end plate into regions according to different supporting conditions, calculating the plate thickness required by each region according to the theory of the steel structure, and taking the maximum value as the thickness t of the steel end platep；
5) Step S5, when processing and manufacturing the beam, according to the structure requirement that the longitudinal steel bar in the concrete passes through the hole on the flange of the H-shaped steel and then is bent and anchored, the length of the beam end H-shaped steel should meet the minimum distance from the hole to the edge, the clear distance between the stiffening rib and the end part is enough to screw the bolt, the H-shaped steel is provided with an end plate (with a bolt hole) at one end of the connecting post, the other end is provided with a sealing plate to be separated from the concrete beam section, the sealing plate is welded with a bolt nail to transmit the shearing force between the concrete and the H-shaped steel, the upper and lower edges of the sealing plate are provided with a plurality of U-shaped notches to facilitate the penetration of the longitudinal steel bar, after the assembly of the precast concrete beam and the steel column (combination post) is completed on site, the H-shaped steel at the two ends of the beam and the steel bar which is leaked outside the concrete are.
Claims (3)
1. End plate connection type assembled precast reinforced concrete roof beam, including reinforced concrete main part (1), its characterized in that: longitudinal steel bars (2) are arranged on upper and lower flanges of the reinforced concrete main body (1), the end part of the reinforced concrete main body (1) is connected with a sealing plate (5), studs (10) are welded on the inner side of the sealing plate (5), and the studs (10) are fixedly connected in concrete of the reinforced concrete main body (1); the outer side of the sealing plate (5) is welded with the inner end of the H-shaped steel (6), and the outer end of the H-shaped steel (6) is welded with the end plate (8); shearing force of the end part of the reinforced concrete main body (1) is transmitted to the H-shaped steel (6) through the studs (10) on the sealing plate (5) and then transmitted to the column through the end plate (8), and bending moment of the concrete beam section is transmitted to the H-shaped steel (6) through the longitudinal steel bar (2); a stiffening rib (11) is arranged between the flange and the web of the H-shaped steel (6); the longitudinal steel bar (2) penetrates through holes of upper and lower flanges of the H-shaped steel (6), then is bent and attached to the stiffening rib (11) to form anchoring;
one side close to the middle part of the reinforced concrete body (1) is the inner side, and the other side is the outer side.
2. The end plate connection type fabricated reinforced concrete beam as set forth in claim 1, wherein: the middle part of the reinforced concrete main body (1) is provided with a non-encryption area stirrup (3), and the part, close to the sealing plate (5), on the reinforced concrete main body (1) is provided with an encryption area stirrup (4).
3. The end plate connection type fabricated reinforced concrete beam as set forth in claim 1, wherein: a stiffening rib (7) is arranged between the flange of the H-shaped steel (6) and the end plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021983559.8U CN212897180U (en) | 2020-09-11 | 2020-09-11 | End plate connection type prefabricated reinforced concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021983559.8U CN212897180U (en) | 2020-09-11 | 2020-09-11 | End plate connection type prefabricated reinforced concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212897180U true CN212897180U (en) | 2021-04-06 |
Family
ID=75257253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021983559.8U Active CN212897180U (en) | 2020-09-11 | 2020-09-11 | End plate connection type prefabricated reinforced concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212897180U (en) |
-
2020
- 2020-09-11 CN CN202021983559.8U patent/CN212897180U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112127546A (en) | End plate connection type assembly type prefabricated reinforced concrete beam and design method thereof | |
| CN111593926A (en) | H-shaped steel part filled concrete combined column-reinforced concrete beam joint and design method thereof | |
| KR20060024850A (en) | Steel-concrete sandwitch type hybrid beam and high strength hybrid structure system using the same | |
| CN113107088A (en) | Prestressed full-dry type connection assembly type concrete frame beam column joint | |
| CN106368348A (en) | Overlapped combined shear wall with double-phase stress characteristic | |
| CN108487476A (en) | Prefabrication steel concrete compound tube site operation shear wall T-type horizontal connection structure | |
| CN113529946B (en) | Beam column energy consumption connecting piece based on U-shaped plate and construction method thereof | |
| CN209163210U (en) | A kind of fashioned iron and the building structure including the fashioned iron | |
| CN112252522B (en) | Connecting joint for connecting vertical corrugated steel plate shear wall and RC frame beam on two sides | |
| CN212897180U (en) | End plate connection type prefabricated reinforced concrete beam | |
| CN108412120A (en) | A kind of shaped steel and the building structure including the shaped steel | |
| CN110924522B (en) | Steel plate interface connecting structure and connecting method for reinforced concrete beam and column | |
| CN212897853U (en) | H-shaped steel part filled concrete combined column-reinforced concrete beam joint | |
| CN111851737A (en) | Assembled concrete frame beam column trunk type connecting joint | |
| CN219157934U (en) | Assembled concrete self-resetting beam column node box type connection structure | |
| CN110748043A (en) | Anti-buckling steel plate shear wall restrained by all-steel assembly type double-limb steel pipes | |
| CN111173129A (en) | Prestress assembling frame structure and construction method | |
| CN208518116U (en) | Prefabrication steel concrete overlapped shear wall assembled arthitecutral structure | |
| CN114753489B (en) | Prefabricated beam column node and novel assembled reinforced concrete building thereof | |
| CN217537332U (en) | Connecting structure of assembled type steel reinforced concrete beam and steel-concrete composite board | |
| JPS6349776B2 (en) | ||
| CN214219990U (en) | Connection node structure of confined concrete column combination beam | |
| CN114215193A (en) | Connection structure of assembled steel-concrete composite board and shaped steel concrete beam | |
| CN211690754U (en) | Assembled concrete building connected node | |
| CN111424847A (en) | Self-resetting connecting node of steel tube bundle combined shear wall and steel beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |