CN203514638U - Built-in heavy-load beam member of novel composite truss - Google Patents
Built-in heavy-load beam member of novel composite truss Download PDFInfo
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- CN203514638U CN203514638U CN201320372997.4U CN201320372997U CN203514638U CN 203514638 U CN203514638 U CN 203514638U CN 201320372997 U CN201320372997 U CN 201320372997U CN 203514638 U CN203514638 U CN 203514638U
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- composite truss
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Abstract
The utility model belongs to the technical field of the engineering structure, and in particular relates to a built-in heavy-load beam member of a novel composite truss. Two or more parallel steel tubes are taken as chord tubes in the structure; the chord tubes are connected through a plurality of diagonal web members, and self-compacting concrete is filled in each chord tube to form the composite truss of concrete filled steel tubes; and the composite truss of concrete filled steel tubes is externally bound with a stirrup and a longitudinal bar and poured with concrete to form the built-in heavy-load beam member of the novel composite truss. Due to the structure, the problem that the beam members in the transfer floor of a high-rise building and a metro platform require great sectional flexural stiffness, and high bending resistance and shear bearing capacity is solved. In addition, the composite truss of prefabricated concrete filled steel tubes can be used as a stiff skeleton to bear the construction load at the initial stage, and thus is convenient for construction.
Description
Technical field
The utility model belongs to engineering structures technical field, particularly the built-in heavily loaded beam of a kind of Novel combined truss.
Background technology
Beam in high-rise building transfer floor and subway platform needs larger cross-section bending rigidity, bending resistance and shear-carrying capacity are resisted larger vertical load, if expand simply the sectional dimension of reinforced concrete member, affect usage space, concrete gravity is likely by beam conquassation, and the problem of mass concrete construction is simultaneously more outstanding.
Summary of the invention
The utility model provides a kind of Novel combined truss built-in heavily loaded beam, and having solved heavily loaded beam in high-rise building transfer floor and subway platform needs larger cross-section bending rigidity, and the problem of larger bending resistance and shear-carrying capacity.
The technical solution adopted in the utility model is:
Two or many parallel steel tube are as the string pipe in the built-in heavily loaded beam of composite roof truss, between by many diagonal web members, connect, and fill self-compacting concrete in each string pipe, form concrete filled steel tube composite roof truss; Colligation stirrup and vertical muscle outside concrete filled steel tube composite roof truss, and pour into a mould peripheral concrete, form the built-in heavily loaded beam of composite roof truss.
The quantity of described string pipe is two, three or four.
The structure of described two string pipes, only connects by web member between string pipe; Three and three, with the tubular structure that winds up, are connected with horizontal straight connecting rod by web member between string pipe.
Described string pipe adopts clod wash, welding or jointless structure steel pipe.
The beneficial effects of the utility model are:
This structure makes full use of the clear and definite feature of composite roof truss power transmission, brings into play outside concrete and girder-embedded combination advantage, realizes higher stiffness of structural member and bearing capacity under the prerequisite of control member sectional dimension.In the simple bending section of beam, composite roof truss top-bottom chord serves as respectively pull bar and depression bar, can effectively limit outside distress in concrete and carry out, and improves bending rigidity and the anti-bending bearing capacity of beam; In the curved scissors district of beam, composite roof truss diagonal web member serves as diagonal member and depression bar, transmits most of shearing, thereby has reduced curved scissors district concrete shear stress level, has limited diagonal crack and has carried out and improved beam shear-carrying capacity.In addition Prefabricated concrete-filled steel tube composite roof truss also can be used as stiff skeleton and bears initial stage working load, constructability.Compare with concrete filled steel tube flitch-trussed beam, external wrapping concrete can improve its bending rigidity and bearing capacity, improves resistance to overturning, and its fire resistance and corrosion resistance are good simultaneously, reduces relevant maintenance cost.The rigidity of such beam and bearing capacity are greater than the simple superposition of concrete filled steel tube composite roof truss and peripheral steel concrete part, can be widely used in high-rise building transfer floor and subway platform.
Accompanying drawing explanation
Fig. 1 and 4 is respectively beam plan view and the A-A sectional drawing of built-in two limb steel pipe Combined concrete truss.
Fig. 2 and 5 is respectively beam plan view and the A-A sectional drawing of built-in three-limb steel pipe Combined concrete truss.
Fig. 3 and 6 is respectively beam plan view and the A-A sectional drawing of built-in four limbs concrete filled steel tube composite roof truss.
Fig. 7 is the beam schematic three dimensional views of built-in three-limb steel pipe Combined concrete truss.
Number in the figure:
1-peripheral concrete, 2-stirrup, 3-indulges muscle, the steel pipe in 4-upper chord, the concrete in 5-upper chord, the steel pipe in 6-lower chord, the concrete in 7-lower chord, 8-diagonal web member, the horizontal straight connecting rod of 9-.
The specific embodiment
The utility model provides a kind of Novel combined truss built-in heavily loaded beam, below in conjunction with the drawings and specific embodiments, the utility model is described further.
The utility model adopts two limbs, three limbs or four limbs concrete filled steel tube composite roof truss structure conventionally.
Two limb structures as shown in Figure 1 and Figure 4, adopt two parallel clod washes, welding or jointless structure with steel pipe as the string pipe in this structure, be respectively steel pipe 4 in upper chord and the steel pipe 6 in lower chord, between by many diagonal web members 8, connect.Steel pipe 4 in upper chord and the steel pipe 5 in lower chord be interior fills respectively self-compacting concrete (being concrete 5 in upper chord and the concrete seven in lower chord), forms concrete filled steel tube composite roof truss; Colligation stirrup 2 and vertical muscle 4 outside concrete filled steel tube composite roof truss, and formwork cast peripheral concrete 1, form the built-in heavily loaded beam of composite roof truss.
As shown in Figure 2 and Figure 4, three-dimensional structure as shown in Figure 7 for three limb structures.Different from two limb structures, its three limb is comprised of two upper chords and a lower chord, between two upper chords, by horizontal straight connecting rod 9, connects, and between two upper chords and lower chord, connects respectively by diagonal web member 8.
Four limbs structure as shown in Figure 3 and Figure 6, is comprised of two upper chords and two lower chords, between two upper chords (lower chord), by horizontal straight connecting rod 9, connects, and between upper chord and lower chord, connects respectively by diagonal web member 8.
Claims (4)
1. the built-in heavily loaded beam of Novel combined truss, it is characterized in that, two or many parallel steel tube are as the string pipe in the built-in heavily loaded beam of described composite roof truss, between by many diagonal web members, connect, and fill self-compacting concrete in each string pipe, form concrete filled steel tube composite roof truss; Colligation stirrup and vertical muscle outside concrete filled steel tube composite roof truss, and pour into a mould peripheral concrete, form the built-in heavily loaded beam of composite roof truss.
2. the built-in heavily loaded beam of Novel combined truss according to claim 1, is characterized in that, the quantity of described string pipe is two, three or four.
3. the built-in heavily loaded beam of Novel combined truss according to claim 1, is characterized in that the structure of described two string pipes only connects by web member between string pipe; Three and three, with the tubular structure that winds up, are connected with horizontal straight connecting rod by web member between string pipe.
4. the built-in heavily loaded beam of Novel combined truss according to claim 1, is characterized in that, described string pipe adopts clod wash, welding or jointless structure steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372997.4U CN203514638U (en) | 2013-06-26 | 2013-06-26 | Built-in heavy-load beam member of novel composite truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372997.4U CN203514638U (en) | 2013-06-26 | 2013-06-26 | Built-in heavy-load beam member of novel composite truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203514638U true CN203514638U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320372997.4U Expired - Lifetime CN203514638U (en) | 2013-06-26 | 2013-06-26 | Built-in heavy-load beam member of novel composite truss |
Country Status (1)
| Country | Link |
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| CN (1) | CN203514638U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306428A (en) * | 2013-06-26 | 2013-09-18 | 清华大学 | Built-in heavy load beam member of novel composite truss |
| CN103967206A (en) * | 2014-05-14 | 2014-08-06 | 福建工程学院 | Combined lattice type hollow component |
| RU2739271C1 (en) * | 2019-09-25 | 2020-12-22 | Валерий Васильевич Харин | Double-pipe-concrete beam |
-
2013
- 2013-06-26 CN CN201320372997.4U patent/CN203514638U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306428A (en) * | 2013-06-26 | 2013-09-18 | 清华大学 | Built-in heavy load beam member of novel composite truss |
| CN103306428B (en) * | 2013-06-26 | 2015-06-10 | 清华大学 | Built-in heavy load beam member of novel composite truss |
| CN103967206A (en) * | 2014-05-14 | 2014-08-06 | 福建工程学院 | Combined lattice type hollow component |
| RU2739271C1 (en) * | 2019-09-25 | 2020-12-22 | Валерий Васильевич Харин | Double-pipe-concrete beam |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |