CN211690998U - Combined upper chord truss secondary beam floor system with floor support plate - Google Patents
Combined upper chord truss secondary beam floor system with floor support plate Download PDFInfo
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- CN211690998U CN211690998U CN201921288123.4U CN201921288123U CN211690998U CN 211690998 U CN211690998 U CN 211690998U CN 201921288123 U CN201921288123 U CN 201921288123U CN 211690998 U CN211690998 U CN 211690998U
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Abstract
The utility model provides a combined upper chord truss secondary beam floor system with floor support plates, which comprises a plurality of groups of combined upper chord trusses, a plurality of floor support plates and a plurality of reinforcing mesh sheets; wherein, the upper end of the combined upper chord truss is an upper chord; the upper chord is formed by welding a first steel plate and an L-shaped second steel plate which are integrally bent, wherein the first steel plate comprises an upper horizontal part, a lower horizontal part, an inclined part connecting the upper horizontal part and the lower horizontal part, and an L-shaped bottom part vertically extending downwards from the end head of the lower horizontal part; the multiple groups of combined upper chord trusses are arranged in parallel in the same horizontal direction; a floor bearing plate is erected between the adjacent combined upper chord trusses; the reinforcing bar net piece is laid on the surface of the floor bearing plate, and is supported on the upper horizontal parts of the combined upper chord trusses. The utility model discloses be fit for industrial production to higher load is realized to light and handy structure, thereby reduce cost is and improve building overall load situation.
Description
Technical Field
The utility model relates to a building technical field especially relates to a take combination upper chord truss secondary beam superstructure system of building carrier plate.
Background
The traditional building floor secondary beam generally adopts a reinforced concrete secondary beam and a solid web type steel frame secondary beam. The structure of steelframe concrete secondary beam is comparatively heavy, generally adopts cast in situ, is not convenient for prefabricate, consequently is difficult to realize batch chemical industry production, and production efficiency is lower. The solid-web steel-frame secondary beam is usually in the form of i-steel, and the steel consumption per unit length is large, so that the solid-web steel-frame secondary beam has the defects of great weight and high cost. Moreover, because the two traditional floor secondary beams have the problem of heavy self-weight, the overall load condition and the comprehensive cost of the building are also influenced obviously. Meanwhile, the traditional floor slab adopts a method of on-site formwork erection and pouring, so a large number of scaffolds and templates are needed, and the economic benefit is not high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be fit for industrial production to light and handy structure realizes higher load, thereby reduce cost and improve the combination upper chord truss secondary beam superstructure system of building carrier plate of building gross load situation.
In order to achieve the purpose, the utility model provides a combined upper chord truss secondary beam floor system with a floor support plate, which comprises a plurality of groups of combined upper chord trusses, a plurality of floor support plates and a plurality of reinforcing mesh sheets; the upper end of the combined upper chord truss is an upper chord;
the upper chord is formed by welding a first steel plate and an L-shaped second steel plate which are integrally bent, the first steel plate comprises an upper horizontal part, a lower horizontal part, an inclined part connecting the upper horizontal part and the lower horizontal part, and an L-shaped bottom part vertically extending downwards from the end head of the lower horizontal part, and the upper horizontal part, the lower horizontal part and the inclined part form a steel plate with a Z-shaped section;
the end of the right-angle side of the second steel plate is fixedly welded with the lower horizontal part; the vertical edge of the second steel plate is arranged in parallel relative to the vertical edge of the bottom;
a plurality of groups of the combined upper chord trusses are arranged in parallel in the same horizontal direction; the floor bearing plate is erected between the adjacent combined upper chord trusses; the reinforcing mesh is laid on the surface of the floor bearing plate and supported on the upper horizontal parts of the combined upper chord trusses.
Preferably, the combined upper chord truss also comprises two L-shaped lower chords and a plurality of sections of sawtooth-shaped web members; the vertical edges of the two lower chords are arranged in parallel relatively; the web member is positioned between the upper chord member and the lower chord member;
preferably, the connecting point at the lower end of the web member is embedded between the vertical edges of the two lower chords and is fixedly connected with the vertical edges of the lower chords by welding;
the connecting point at the upper end of the web member is embedded between the vertical edge of the second steel plate and the vertical edge of the bottom in the upper chord member; and is fixedly connected with the vertical edge of the second steel plate and the side edge of the bottom part by welding.
Preferably, the L-shaped lower chord is an angle steel.
Preferably, the multi-section zigzag web member is formed by integrally bending a solid circular tube.
Preferably, the level of the floor deck is lower than the level of the upper horizontal part of the upper chord; after the reinforcing mesh cover is arranged on the floor bearing plate, the support hogging moment reinforcing steel bar in the reinforcing mesh is erected through the upper chord member, and after the erection, the bending moment degree of the surface of the reinforcing mesh is matched with a bending moment enveloping graph of the floor slab stress.
Compared with the prior art, the utility model has the advantages that: the utility model discloses an upper chord member of steel truss constitutes one "Z" shape cross section part by upper and lower horizontal part and slope part, and this "Z" shape cross section part mainly has three favourable functions in floor secondary beam system: firstly, the truss upper chord member is used as an upper chord member to bear compressive stress in the concrete pouring process until the concrete reaches the design strength, and the stress of the truss upper chord member is borne by the concrete; secondly, in the process of binding the floor plate reinforcing steel bar net, the reinforcing steel bar net is used as a support, so that the reinforcing steel bar is naturally bent upwards at the truss to form a hogging moment reinforcing steel bar in the floor plate; thirdly, the steel truss upper chord member is buried in the poured concrete, and after the concrete reaches the designed strength, the combination stress of the steel truss upper chord member and the concrete is built by means of the bonding force of the concrete, so that the best bearing capacity is achieved. The floor bearing plate in the floor system adopts the B-deck floor bearing plate, the reduced thickness of the B-deck floor bearing plate is only 75mm-90mm, the floor has light dead weight, and the floor system is also suitable for batch industrial production, can be used as a permanent template in the floor concrete pouring process, does not need to be disassembled, and therefore the comprehensive manufacturing cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a combined upper chord truss secondary beam floor system with a floor support plate in an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a composite upper chord truss secondary beam floor system with a floor support plate according to an embodiment of the present invention;
fig. 3 is a front view of the combined upper chord truss in an embodiment of the present invention;
fig. 4 is a side view of an assembled upper chord truss in an embodiment of the present invention;
fig. 5 is a partial front view of an upper chord of an assembled upper chord according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described below.
As shown in fig. 1 and 2, the utility model provides a combined upper chord truss 1-time beam floor system with a floor support plate 2, which comprises a plurality of groups of combined upper chord trusses 1, a plurality of floor support plates 2 and a plurality of reinforcing mesh sheets 3; wherein, the upper end of the combined upper chord truss 1 is an upper chord 4;
as shown in fig. 4 and 5, the upper chord 4 is formed by welding a first steel plate and an "L" -shaped second steel plate 11, the first steel plate is formed by bending an upper horizontal portion 7, a lower horizontal portion 9, an inclined portion 8 connecting the upper horizontal portion 7 and the lower horizontal portion 9, and an "L" -shaped bottom portion 10 vertically extending downward from the end of the lower horizontal portion 9, and the upper horizontal portion 7, the lower horizontal portion 9 and the inclined portion 8 form a steel plate with a "Z" -shaped cross section; the lateral edges of the second steel plate 11 and the lateral edges of the "L" -shaped bottom 10 can be extended outwards for resting the floor deck 2, so that the provision of scaffolding can be dispensed with in the system.
The end of the right-angle side of the second steel plate 11 is welded and fixed with the lower horizontal part 9; and the vertical edge of the second steel plate 11 is arranged in parallel with the vertical edge of the bottom 10;
the multiple groups of combined upper chord trusses 1 are arranged in parallel in the same horizontal direction; a floor support plate 2 is erected between the adjacent combined upper chord trusses 1; the reinforcing mesh 3 is laid on the surface of the floor support plate 2, and the reinforcing mesh 3 is supported on the upper horizontal parts 7 of the combined upper chord trusses 1.
As shown in fig. 3, in the present embodiment, the combined upper chord truss 1 further comprises two "L" -shaped lower chords 6 and a plurality of sections of serrated web members 5; the vertical edges of the two lower chords 6 are arranged in parallel relatively; the web member 5 is positioned between the upper chord 4 and the lower chord 6;
in the embodiment, the connection point of the lower end of the web member 5 is embedded between the vertical edges of the two lower chords 6 and fixedly connected with the vertical edges of the lower chords 6 by welding;
the connecting point at the upper end of the web member 5 is embedded between the vertical edge of the second steel plate 11 in the upper chord 4 and the vertical edge of the bottom 10; and is fixedly connected with the vertical edge of the second steel plate 11 and the side edge of the bottom 10 by welding.
In this embodiment, the "L" shaped lower chord 6 is an angle steel, and the lateral side of the angle steel can be used as a support leg to directly support the system on the bottom surface.
In the present embodiment, the multi-stage web member 5 is formed by integrally bending a solid circular tube.
In the present embodiment, the level of the floor deck 2 is lower than the level of the upper horizontal portion 7 of the upper chord 4; after the reinforcing mesh 3 is covered on the floor bearing plate 2, the support hogging moment reinforcing steel bars in the reinforcing mesh 3 are elevated through the upper chord member, and the bending moment degree of the surface of the reinforcing mesh 3 after the elevation is matched with a bending moment enveloping graph of floor slab stress, so that the aim of reasonable stress is fulfilled; the member is simple and convenient to process and quick to install, and can meet the requirement of floor assembly construction.
In the present embodiment, the upper chord 4 of the steel truss of the present invention is composed of the upper and lower horizontal portions 9 and the inclined portion 8 to form a "Z" shaped section, which has three advantageous functions in the floor secondary beam system: firstly, in the concrete pouring process, the upper chord 4 serving as the truss bears the compressive stress until the concrete reaches the design strength, and the stress of the upper chord of the truss is borne by the concrete; secondly, in the process of binding the floor plate reinforcing steel bar net, the reinforcing steel bar net is used as a support, so that the reinforcing steel bar is naturally bent upwards at the truss to form a hogging moment reinforcing steel bar in the floor plate; thirdly, the steel truss upper chord member 4 is buried in the poured concrete, and after the concrete reaches the designed strength, the combination stress of the steel truss upper chord member and the concrete is built by means of the bonding force of the concrete, so that the best bearing capacity is achieved. The floor bearing plate 2 in the floor system adopts the B-deck floor bearing plate 2, the reduced thickness of the B-deck floor bearing plate 2 is only 75mm-90mm, the floor has light dead weight, and the floor system is also suitable for batch industrial production, can be used as a permanent template in the floor concrete pouring process, does not need to be disassembled, and therefore the comprehensive manufacturing cost is reduced.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (7)
1. A combined upper chord truss secondary beam floor system with floor support plates is characterized by comprising a plurality of groups of combined upper chord trusses, a plurality of floor support plates and a plurality of reinforcing mesh sheets; the upper end of the combined upper chord truss is an upper chord;
the upper chord is formed by welding a first steel plate and an L-shaped second steel plate which are integrally bent, the first steel plate comprises an upper horizontal part, a lower horizontal part, an inclined part connecting the upper horizontal part and the lower horizontal part, and an L-shaped bottom part vertically extending downwards from the end head of the lower horizontal part, and the upper horizontal part, the lower horizontal part and the inclined part form a steel plate with a Z-shaped section;
the end of the right-angle side of the second steel plate is fixedly welded with the lower horizontal part; the vertical edge of the second steel plate is arranged in parallel relative to the vertical edge of the bottom;
a plurality of groups of the combined upper chord trusses are arranged in parallel in the same horizontal direction; the floor bearing plate is erected between the adjacent combined upper chord trusses; the reinforcing mesh is laid on the surface of the floor bearing plate and supported on the upper horizontal parts of the combined upper chord trusses.
2. The system of claim 1, wherein the composite upper chord truss secondary beam floor system with the floor deck further comprises two "L" shaped lower chords and a plurality of sections of serrated web members; the vertical edges of the two lower chords are arranged in parallel relatively; the web member is positioned between the upper chord and the lower chord.
3. The system of claim 2, wherein the lower ends of the web members are connected to the vertical edges of the two lower chords by welding;
the connecting point at the upper end of the web member is embedded between the vertical edge of the second steel plate and the vertical edge of the bottom in the upper chord member; and is fixedly connected with the vertical edge of the second steel plate and the side edge of the bottom part by welding.
4. The system of claim 2, wherein the lower chord member is an angle steel.
5. The system of claim 2, wherein the web members are integrally formed by bending a solid circular tube.
6. The system of claim 1, wherein the deck has a level lower than the level of the upper horizontal portion of the upper chord; after the reinforcing mesh cover is arranged on the floor bearing plate, the support hogging moment reinforcing steel bar in the reinforcing mesh is erected through the upper chord member, and after the erection, the bending moment degree of the surface of the reinforcing mesh is matched with a bending moment enveloping graph of the floor slab stress.
7. The system of claim 1, wherein the deck thickness is between 75mm and 90 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288123.4U CN211690998U (en) | 2019-08-09 | 2019-08-09 | Combined upper chord truss secondary beam floor system with floor support plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288123.4U CN211690998U (en) | 2019-08-09 | 2019-08-09 | Combined upper chord truss secondary beam floor system with floor support plate |
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| Publication Number | Publication Date |
|---|---|
| CN211690998U true CN211690998U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921288123.4U Active CN211690998U (en) | 2019-08-09 | 2019-08-09 | Combined upper chord truss secondary beam floor system with floor support plate |
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2019
- 2019-08-09 CN CN201921288123.4U patent/CN211690998U/en active Active
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