CN210563001U - Steel bar truss with three-dimensional web member reinforcing steel bars - Google Patents
Steel bar truss with three-dimensional web member reinforcing steel bars Download PDFInfo
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- CN210563001U CN210563001U CN201920914633.1U CN201920914633U CN210563001U CN 210563001 U CN210563001 U CN 210563001U CN 201920914633 U CN201920914633 U CN 201920914633U CN 210563001 U CN210563001 U CN 210563001U
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Abstract
The utility model discloses a steel bar truss with a solid web member steel bar, which comprises a solid web member steel bar and a bottom chord steel bar; the three-dimensional web member steel bar comprises an upper bending part of the web member steel bar, a lower bending part of the web member steel bar and a straight line section of the web member steel bar, and the three-dimensional web member steel bar is formed by bending and stretching; the straight line sections of the two adjacent web member steel bars and the upper bending part or the lower bending part of the web member steel bar between the straight line sections form an inverted V-shaped or V-shaped structure, and the side surface of the three-dimensional web member steel bar is welded with a lower chord steel bar. The utility model has the effects that: the utility model discloses can cancel the setting of upper chord reinforcing bar to through setting up the whole three-dimensional web member reinforcing bar, replaced traditional steel bar truss both sides respectively independent welded web member reinforcing bar, can satisfy steel bar truss's atress requirement, save material can improve steel bar truss's production efficiency again. Meanwhile, the connecting interface of the upper chord steel bar is reserved on the three-dimensional web member steel bar, the upper chord steel bar can be installed according to the requirement, and the three-dimensional web member steel bar has strong adaptability.
Description
Technical Field
The utility model relates to a steel bar truss with three-dimensional web member reinforcing bar.
Background
The traditional steel bar truss used for precast concrete composite floor slabs, steel bar truss floor support plates and the like is provided with upper chord steel bars, the upper chord steel bars, double-branch web bars and lower chord steel bars form a whole structure through resistance welding, and the traditional steel bar truss has the problems of complex structure, large assembly difficulty, large welding amount, long production process, low efficiency and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a steel bar truss with three-dimensional web member reinforcing bar.
The purpose of the utility model is realized through the following technical scheme:
a steel bar truss with a three-dimensional web member steel bar comprises the three-dimensional web member steel bar and a lower chord steel bar; the three-dimensional web member steel bar comprises a web member steel bar upper bending part, a web member steel bar lower bending part and a web member steel bar straight line section, and the three-dimensional web member steel bar is formed by bending and stretching; the straight line sections of the two adjacent web member steel bars and the upper bending parts of the web member steel bars between the straight line sections of the two adjacent web member steel bars or the lower bending parts of the web member steel bars form an inverted V-shaped or V-shaped structure, and the side surfaces of the three-dimensional web member steel bars are welded with lower chord steel bars. Preferably, the lower chord steel bars are welded to two sides of the three-dimensional web member steel bars respectively.
Preferably, the lower chord steel bars are welded to two sides of the three-dimensional web member steel bars respectively. Preferably, the bottom of the solid web member reinforcing bar is provided with a leg portion. Preferably, the leg portions are v-shaped and extend horizontally outwardly.
Preferably, the lower chord steel bar is welded to the outer side of the lower bent part of the web member steel bar.
Preferably, the lower chord steel bar is welded on the outer side of the straight line section of the web member steel bar and is close to the leg support part.
As the preferred mode, the utility model discloses still include the steel bar of going up the chord, go up the upper portion of chord steel bar welding at three-dimensional web member reinforcing bar.
Preferably, the upper chord steel bar and the upper bending part of the web member steel bar are welded.
Preferably, the upper chord steel bar penetrates through the bent part on the web member steel bar and is welded with the bent part on the web member steel bar.
Preferably, the lower chord steel bar and the upper chord steel bar are straight steel bars.
The utility model has the advantages that: the utility model discloses can cancel the setting of last chord steel bar. Compare with traditional steel bar truss, the utility model discloses a set up whole three-dimensional web member reinforcing bar, replaced traditional steel bar truss both sides respectively independent welded web member reinforcing bar, can satisfy steel bar truss's atress requirement, save material can improve steel bar truss's production efficiency again. In addition, the connecting interface of the upper chord steel bar is reserved on the three-dimensional web member steel bar, the upper chord steel bar can be installed according to the requirement, and the three-dimensional web member steel bar has strong adaptability.
Drawings
FIG. 1 is a schematic view of a steel bar truss with three-dimensional web member steel bars;
FIG. 2 is a three-dimensional axial view of a three-dimensional web member reinforcing bar;
FIG. 3 is a side view of a three-dimensional web member rebar;
FIG. 4 is an elevation view of a solid web member reinforcement bar;
FIG. 5 is a schematic view of a manufacturing process of a steel bar truss;
FIG. 6 is a second schematic view illustrating a manufacturing process of the steel bar truss;
fig. 7 is a third schematic view of a manufacturing process of the steel bar truss;
fig. 8 is a fourth view a of the schematic process of manufacturing the steel bar truss;
fig. 9 is a fourth view b of the schematic process of manufacturing the steel bar truss;
fig. 10 is a fourth view c of the schematic process of manufacturing the steel bar truss;
fig. 11 is a schematic structural view of a steel bar truss (with rear upper chord steel bars) used for an assembled steel bar truss floor deck or a precast concrete composite floor slab;
FIG. 12 is a schematic structural view of a steel bar truss for a welded steel bar truss floor deck (without rear upper chord steel bars);
FIG. 13 is a schematic view of a steel bar truss structure (with rear upper chord steel bars) for a welded steel bar truss floor deck;
fig. 14 is a composite floor slab using the steel bar truss of the present invention;
in the figure, 1-three-dimensional web member steel bar, 1.1-upper bending part of web member steel bar, 1.2-lower bending part of web member steel bar, 2-lower chord steel bar and 3-upper chord steel bar.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1-2, a steel bar truss with a solid web member steel bar 1 comprises a solid web member steel bar 1 and a lower chord steel bar 2; the three-dimensional web member steel bar 1 comprises an upper bending part 1.1 of the web member steel bar, a lower bending part 1.2 of the web member steel bar and a straight line section of the web member steel bar, and the three-dimensional web member steel bar 1 is bent and formed; the three-dimensional web member reinforcing steel bars 1 are laterally stretched to form a staggered structure; the inverted V-shaped or V-shaped structure is formed by the straight line sections of the two adjacent web member steel bars and the upper bending portions 1.1 of the web member steel bars between the straight line sections of the two adjacent web member steel bars or the lower bending portions 1.2 of the web member steel bars, the adjacent V-shaped structures are not on the same plane, and the lower chord steel bars 2 are welded on the side surfaces of the three-dimensional web member steel bars 1. As shown in fig. 3, the solid web member reinforcing bar 1 has an inverted V-shape when viewed from the side of the solid web member reinforcing bar 1. As shown in fig. 4, the three-dimensional web member steel bar 1 has a zigzag waveform when viewed from the front of the three-dimensional web member steel bar 1. The three-dimensional web member steel bar 1 is in a sawtooth waveform when viewed from top to bottom. The upper bend 1.1 of the web member reinforcement, the lower bend 1.2 of the web member reinforcement and the straight section of the web member reinforcement are substantially integral and the various positions will be named only for convenience of description. The part 1/20-1/10 of the upper part of the three-dimensional web member steel bar 1 is called an upper bending part 1.1 of the web member steel bar, the part 1/20-1/10 of the lower part of the three-dimensional web member steel bar 1 is called a lower bending part 1.2 of the web member steel bar, and the part between the upper bending part 1.1 of the web member steel bar and the lower bending part 1.2 of the web member steel bar is called a straight line part of the web member steel bar.
In a preferred embodiment, the lower chord steel bar 2 is welded to both sides of the solid web member steel bar 1.
In a preferred embodiment, the bottom of the solid web member reinforcement bar 1 is provided with a leg portion.
In a preferred embodiment the leg portions are V-shaped (where the V-shape is smaller than in the above-described V-shaped configuration, i.e. only the web member bar lower bends 1.2 are bent into a small V-shape) and extend horizontally outwards. The utility model discloses exert the power of bending in three-dimensional web member reinforcing bar 1 side, make the web member reinforcing bar under the bending portion 1.2 form the shank of outside extension.
In a preferred embodiment, the lower chord reinforcement 2 is welded to the outside of the lower bend 1.2 of the web member reinforcement.
In a preferred embodiment, the lower chord reinforcement 2 is welded to the outside of the straight section of the web reinforcement, near the leg sections.
In a preferred embodiment, the utility model discloses still include last quarter reinforcing bar 3, last quarter reinforcing bar 3 welds the upper portion at three-dimensional web member reinforcing bar 1.
In a preferred embodiment, the upper chord reinforcement 3 is welded to the bend 1.1 in the web member reinforcement.
In a preferred embodiment, the upper chord reinforcement 3 is passed through the web member reinforcement upper bend 1.1 and welded to the web member reinforcement upper bend 1.1.
In a preferred embodiment, the lower-chord steel bars 2 and the upper-chord steel bars 3 are straight steel bars, the length of the lower-chord steel bars 2 is consistent with that of the upper-chord steel bars 3, and the length error does not exceed 10 mm.
A method for manufacturing a steel bar truss with a three-dimensional web member steel bar 1 comprises the following steps:
a bending step: bending a straight steel bar into a sawtooth-shaped steel bar to form a sawtooth initial state of the three-dimensional web member steel bar 1, as shown in fig. 5;
a stretching step: the three-dimensional web member steel bars 1 are manufactured by lateral staggered stretching, and the lateral staggered stretching is carried out according to the principle that the lower bent parts 1.2 of the web member steel bars at odd positions are pulled inwards and the lower bent parts 1.2 of the web member steel bars at even positions are pulled outwards, as shown in fig. 6; in the process of stretching, uniform force application is paid attention to, and the inward or outward angle of the lower bent part 1.2 of the web member steel bar is ensured to be consistent; preferably, the method further comprises the step of bending the support legs: after stretching, applying bending force on the side surface of the three-dimensional web member reinforcing steel bar 1 to form a leg part, so as to be convenient for welding connection with a lower metal bottom die; the leg bending step is suitable for the condition of the floor bearing plate of the welded steel bar truss;
welding the lower chord steel bar 2: welding lower chord steel bars 2 on two outer sides of the straight line section or the lower bent part of the three-dimensional web member steel bar 1, as shown in figures 7 and 12;
in the case that the fabricated truss floor deck or the precast concrete composite floor slab needs to be provided with the upper chord steel bar 3, namely, in the above case, an installation step of the upper chord steel bar 3 is also needed (as shown in fig. 8, 9, 10 and 11): the upper chord reinforcing steel bar 3 is welded on the upper part of the three-dimensional web member reinforcing steel bar 1, and preferably, the upper chord reinforcing steel bar 3 passes through the upper bending part 1.1 of the web member reinforcing steel bar and is welded with the upper bending part 1.1 of the web member reinforcing steel bar. In the case that the welding step of the upper chord steel bar 3 is needed to be arranged on the welded type steel bar truss floor support plate, the welding step is as shown in fig. 13. In the case of the welded steel bar truss floor deck, the upper chord steel bar 3 is not required to be arranged, as shown in fig. 12. Adopt the utility model discloses steel bar truss's precast concrete coincide floor, as shown in fig. 14.
The key of the utility model lies in:
(1) novel steel bar truss without upper chord steel bar 3
Normally, the upper chord 3 of the steel bar truss is positioned in the floor slab section and above the shaft, and the section and the upper part of the shaft only bear compressive stress and not tensile stress, so the upper chord 3 does not exert the function of bearing the tensile stress and can be eliminated in principle. Therefore, the steel bar truss which is not provided with the upper chord steel bar 3 and is provided with the three-dimensional web member steel bar 1 is changed, the stress requirement of the traditional steel bar truss can be met, materials can be saved, and the using amount of the steel bars can be reduced.
The utility model discloses a but steel bar truss wide application in steel bar truss building carrier plate (welded type and assembly are detachable), precast concrete coincide floor and other combination shear force wallboards etc. that constitute by steel bar truss.
(2) Novel steel bar truss adopting three-dimensional web member steel bar 1 formed by lateral staggered stretching
Traditional steel bar truss forms steel bar truss through two side direction web member truss supports, the utility model discloses only adopt single three-dimensional web member reinforcing bar 1, can form steel bar truss, can material saving, reduce the reinforcing bar quantity, can improve steel bar truss production efficiency again.
The three-dimensional web member reinforcing steel bar 1 is manufactured by bending and laterally stretching the reinforcing steel bar in a staggered manner, the production process is simple, the flow line production can be realized, and the production efficiency is improved.
Bending force is applied to the side face of the three-dimensional web member steel bar 1 to form a leg portion, so that the leg portion can be conveniently connected with a lower metal bottom die in a welding mode and is used for welding the steel bar truss floor bearing plate.
Meanwhile, through the arrangement of the three-dimensional web member reinforcing steel bars 1, the connecting interfaces of the upper chord reinforcing steel bars 3 are reserved, the upper chord reinforcing steel bars 3 can be installed as required, and the three-dimensional web member reinforcing steel bar mounting device has strong adaptability.
The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (10)
1. The utility model provides a steel bar truss with three-dimensional web member reinforcing bar which characterized in that: comprises a solid web member reinforcing steel bar and a lower chord reinforcing steel bar; the three-dimensional web member steel bar comprises a web member steel bar upper bending part, a web member steel bar lower bending part and a web member steel bar straight line section, and the three-dimensional web member steel bar is formed by bending and stretching; the straight line sections of the two adjacent web member steel bars and the upper bending parts of the web member steel bars between the straight line sections of the two adjacent web member steel bars or the lower bending parts of the web member steel bars form an inverted V-shaped or V-shaped structure, and the side surfaces of the three-dimensional web member steel bars are welded with lower chord steel bars.
2. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 1, wherein: the two sides of the solid web member steel bar are respectively welded with a lower chord steel bar.
3. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 1, wherein: the bottom of the solid web member steel bar is provided with a leg part.
4. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 3, wherein: the leg portions are v-shaped and extend horizontally outward.
5. A reinforcing bar truss with three-dimensional web member reinforcing bars according to claim 1 or 2, wherein: the lower chord steel bar is welded on the outer side of the lower bending part of the web member steel bar.
6. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 3, wherein: the lower chord steel bar is welded on the outer side of the straight line section of the web member steel bar and is close to the leg part.
7. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 1, wherein: it still includes the steel bar of upper chord, and the steel bar welding of upper chord is in the upper portion of three-dimensional web member reinforcing bar.
8. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 7, wherein: and the upper chord steel bar is welded with the upper bending part of the web member steel bar.
9. A reinforcing bar truss with three-dimensional web member reinforcing bars as claimed in claim 7 or 8, wherein: the upper chord steel bar penetrates through the upper bending part of the web member steel bar and is welded with the upper bending part of the web member steel bar.
10. The steel bar truss with the stereoscopic web member reinforcing steel bars as claimed in claim 7, wherein: the lower chord steel bar and the upper chord steel bar are straight steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920914633.1U CN210563001U (en) | 2019-06-18 | 2019-06-18 | Steel bar truss with three-dimensional web member reinforcing steel bars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920914633.1U CN210563001U (en) | 2019-06-18 | 2019-06-18 | Steel bar truss with three-dimensional web member reinforcing steel bars |
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| CN210563001U true CN210563001U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130581A (en) * | 2019-06-18 | 2019-08-16 | 中国五冶集团有限公司 | A kind of steel bar girder and preparation method thereof with three-dimensional web member reinforcing bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130581A (en) * | 2019-06-18 | 2019-08-16 | 中国五冶集团有限公司 | A kind of steel bar girder and preparation method thereof with three-dimensional web member reinforcing bar |
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