CN111075115B - Steel bar truss and manufacturing method thereof - Google Patents
Steel bar truss and manufacturing method thereof Download PDFInfo
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- CN111075115B CN111075115B CN202010010298.XA CN202010010298A CN111075115B CN 111075115 B CN111075115 B CN 111075115B CN 202010010298 A CN202010010298 A CN 202010010298A CN 111075115 B CN111075115 B CN 111075115B
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- truss
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- steel bar
- die cavity
- steel bars
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 135
- 239000010959 steel Substances 0.000 title claims abstract description 135
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 68
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000010030 laminating Methods 0.000 claims abstract description 4
- 238000007790 scraping Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 14
- 238000004513 sizing Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 6
- 229920000592 inorganic polymer Polymers 0.000 claims description 4
- 229920000620 organic polymer Polymers 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000007711 solidification Methods 0.000 abstract description 5
- 230000008023 solidification Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 10
- 239000004576 sand Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 239000011178 precast concrete Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000011900 installation process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011513 prestressed concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0636—Three-dimensional reinforcing mats composed of reinforcing elements laying in two or more parallel planes and connected by separate reinforcing parts
Abstract
The invention is applicable to the technical field of constructional engineering, and provides a preparation method of a steel bar truss, which comprises the following steps: preparing a production die slot, fixing the open trapezoid slot section on a die bracket, and bending the die bracket through a plate folding machine; cleaning a die cavity, and uniformly and throughout-length pouring slurry into the die cavity; placing the truss main body into sections, inversely placing the truss main body into a die cavity, scraping the top of the slurry in the die cavity, separating the slurry at the end part of the truss main body by adopting a section separator, and then laminating and curing; and after the slurry in the die cavity reaches the demolding strength, removing the curing coating and the segmented partition plates, and demolding to finish preparation. According to the invention, the preparation method is simple, the preparation work efficiency is high, the slurry is solidified and fixed at the upper end of the truss steel bar, the pressed cross-section area of the upper part of the truss steel bar is increased, the rigidity of the truss steel bar is improved, and the stability of the truss steel bar in the solidification process of the slurry can be improved, so that the processing process is more convenient, stable and accurate.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a steel bar truss and a manufacturing method thereof.
Background
In the preparation of assembled concrete structure building concrete superimposed sheet bottom plate, at present widely adopted steel bar truss, because the last chord steel bar diameter of steel bar truss can not be too big, otherwise can improve the steel consumption, and then increase production and construction cost, but the problem that the last chord steel bar diameter is less brings is that the rigidity of concrete superimposed sheet bottom plate is relatively poor, and easy fracture in production, handling and installation process.
The manufacturing method of the steel bar truss in the prior art comprises a precast prestressed concrete bottom plate, precast concrete flange strip plates and steel bar trusses respectively poured into an upper plate and a lower plate, wherein a gap between a wire penetrating pipe and a steel bar is reserved between the bottom plate and the flange plates. When the concrete precast prestressed concrete slab is manufactured, the steel bar truss and the concrete flange strip plates are poured together, then the steel bar truss flange plates are turned over for 180 degrees, the longitudinal steel bars and the folding line web bar bending parts positioned at the points of the triangular steel bar truss and the transverse distribution bars are pressed into the bottom plate which is tensioned with the prestressed bars and distributed with the concrete materials together, the concrete is vibrated and maintained, and the precast prestressed concrete slab with the steel bar truss flange plates is formed.
In the manufacturing method in the prior art, the top end of the triangular steel bar truss is downward, so that the fixing in the production process is difficult, and particularly, the 90-degree angle steel bar brings inconvenience for the later working procedure; and the concrete is difficult to maintain due to the too small cross section, and is also very easy to crack in the production, storage and transportation, lifting and installation processes.
Disclosure of Invention
The embodiment of the invention aims to provide a preparation method of a steel bar truss, which aims to solve the problem that the top end of a triangular steel bar truss faces downwards in the prior art, so that the fixation in the production process is difficult.
The embodiment of the invention is realized in such a way that the preparation method of the steel bar truss comprises the following steps:
1) Preparing a production die cavity, fixing the open trapezoid-shaped groove section on a die support, and bending the open trapezoid-shaped groove section into a through-length open trapezoid-shaped groove section with the shape consistent with that of the die cavity through a plate folding machine;
2) Pouring slurry, cleaning a die cavity, and uniformly pouring the slurry into the die cavity in a full length mode;
3) Placing the truss main body into a mold cavity in an inverted manner, scraping the top of the slurry in the mold cavity, separating the slurry into sections with the length corresponding to the truss main body at the end part of the truss main body by adopting a segmented partition board with the same section as the mold cavity, and then laminating and curing;
4) Removing the maintenance coating film and the segmented partition plates after the slurry in the die cavity reaches the demolding strength, and demolding the truss main body with the slurry wrapped by the upper chord, so that the preparation of the steel bar truss is completed;
wherein, in the step 2), a release agent is smeared in the working surface range of the die cavity before the slurry is poured;
in the step 3), lower chord steel bars on two sides of the truss main body are clamped on horizontal edges on two sides of the top of the die cavity, and the tops of upper chord steel bars and web member steel bars of the truss main body are suspended in the middle of slurry at the bottom of the die cavity;
in the step 4), after the truss main body of the sizing agent is taken out from the die cavity, the truss main body is turned over for 180 degrees and stacked;
the die cavity is an isosceles trapezoid groove with a long side opening, two bottom corners of the trapezoid are arc-shaped chamfer angles, and the tops of two side edges of the opening end are provided with horizontal edges.
The truss body is formed by connecting steel bars, the steel bars forming the truss body comprise chord member steel bars and web member steel bars, the web member steel bars are fixedly connected between the chord member steel bars, the web member steel bars are limited to move in the circumferential direction and the axial direction of the chord member steel bars in an auxiliary mode through adjusting clamping mechanisms, and the end portion structure is formed by fixedly covering the top of the truss body after slurry is solidified.
According to a further technical scheme, the projection of the cross section of the truss main body is an isosceles triangle, and the slurry is fixed at the vertex angle of the isosceles triangle.
According to a further technical scheme, the slurry is a wedge-shaped block-shaped solidified substance of an inorganic polymer or an organic polymer.
Further technical scheme, chucking mechanism includes annular parcel structure and locking limit structure, and annular parcel structure cup joints the hookup location at web member reinforcing bar and chord member reinforcing bar to link up web member reinforcing bar, chord member reinforcing bar and annular parcel structure through locking limit structure.
The preparation method of the steel bar truss provided by the embodiment of the invention is simple, has high preparation efficiency, and can be used for fixing the slurry at the upper end of the truss steel bar after solidification, so that the pressed cross-sectional area of the upper part of the truss steel bar is increased, the rigidity of the truss steel bar is improved, and the stability problem of the slurry in the solidification process can be improved after the preparation, so that the processing process is more convenient, stable and accurate.
Drawings
Fig. 1 is a schematic structural view of a steel bar truss according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a steel bar truss according to an embodiment of the present invention;
fig. 3 is a schematic longitudinal elevation view of truss steel in a steel truss according to an embodiment of the present invention;
fig. 4 is a schematic longitudinal elevation view of a steel bar truss according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mold cavity in a method for manufacturing a steel bar truss according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a steel bar truss according to an embodiment of the present invention after grouting slurry into a cavity;
fig. 7 is a cross-sectional view of a truss steel bar after grouting slurry into a mold cavity in the method for manufacturing a steel bar truss according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of a truss steel bar preparation method according to an embodiment of the present invention, after the truss steel bar is put in the truss steel bar preparation method, the slurry is smoothed;
fig. 9 is a cross-sectional view of a steel bar truss obtained by the method for manufacturing a steel bar truss according to an embodiment of the present invention after demolding;
fig. 10 is a schematic diagram of a connection between chord steel bars and web steel bars in a steel bar truss according to an embodiment of the present invention;
fig. 11 is a schematic perspective view of a stop collar sleeve in a steel bar truss according to an embodiment of the present invention.
In the accompanying drawings: 1. truss steel bars; 2. a slurry; 3. a die cavity; 11. chord steel bars; 12. web member reinforcement; 13. a limiting ring sleeve; 14. and a limit bolt.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
The method for preparing the steel bar truss provided by one embodiment of the invention comprises the following steps:
1) And (3) preparing and producing a die groove, fixing the open trapezoid groove section on a die support, and bending the open trapezoid groove section into a through-length open trapezoid groove section with the shape consistent with that of the die groove through a plate folding machine.
2) Pouring slurry, cleaning a die cavity, and uniformly pouring the slurry into the die cavity in a full length mode;
3) Placing the truss main body into a mold cavity in an inverted manner, scraping the top of the slurry in the mold cavity, separating the slurry into sections with the length corresponding to the truss main body at the end part of the truss main body by adopting a segmented partition board with the same section as the mold cavity, and then laminating and curing;
4) And after the slurry in the die cavity reaches the demolding strength, removing the curing coating film and the segmented partition plates, and demolding the truss main body of which the upper chord is wrapped with the slurry, thereby completing the preparation of the steel bar truss.
In the embodiment of the invention, preferably, as shown in fig. 5, the die cavity 3 is an isosceles trapezoid groove with an opening on the long side, two bottom corners of the trapezoid are arc-shaped chamfer angles, the tops of two side edges of the opening end are provided with horizontal edges, and the open trapezoid groove section is fixed on the die bracket; the die cavity 3 is prepared from a metal plate, and is bent into a through-length open trapezoid-shaped groove section consistent with the shape of the die cavity 3 through a plate folding machine, and more than one section of open trapezoid-shaped groove section can be selected according to construction requirements to prepare the die cavity 3.
In the embodiment of the present invention, as shown in fig. 6, preferably, the cavity 3 is cleaned first, and the slurry 2 is poured into the cavity 3 uniformly, and the pouring amount of the slurry 2 can be selected according to the needs.
In the embodiment of the present invention, preferably, as shown in fig. 7, the truss steel bar 1 of the finished product is placed in the mold cavity 3 upside down, and more than one truss steel bar 1 can be placed according to the production requirement.
In the embodiment of the present invention, preferably, as shown in fig. 8, the top of the slurry 2 in the mold cavity 3 is scraped, the slurry 2 is separated into sections with the length corresponding to the truss steel bar 1 at the end of the truss steel bar 1 by adopting a segmented partition plate with the same section as the mold cavity 3, and then the sections are subjected to film coating maintenance.
In the embodiment of the invention, preferably, as shown in fig. 9, after the slurry 2 in the mold cavity 3 reaches the demolding strength, removing the curing coating and the segmented partition plates, and demolding the truss reinforcing steel bar 1 wound around the slurry 2; and taking out the truss steel bar 1 with the sizing agent 2 wrapped by the upper chord from the die cavity 3, and thus finishing the preparation of the steel bar truss.
In the embodiment of the invention, preferably, the preparation method is simple, the preparation work efficiency is high, the upper chord of the truss steel bar 1 is wrapped by the slurry 2, the pressed cross-section area of the upper part of the truss steel bar 1 is increased, the rigidity of the truss steel bar 1 is improved, the bearing capacity of the concrete laminated slab bottom plate prepared by the truss steel bar 1 wrapped by the slurry 2 by the upper chord is obviously improved, the support can be reduced or avoided during the construction and installation of the concrete laminated slab bottom plate, the construction and installation efficiency is improved, and the engineering construction cost can be reduced; the truss reinforcing steel bars 1 wrapped with the sizing agent 2 are adopted to prepare the precast concrete laminated slab bottom plate, so that the precast concrete laminated slab bottom plate has good structural mechanical properties, is not easy to crack in the processes of storage, transportation, lifting and construction and installation, and the engineering quality can be effectively ensured; the structural design of the sizing agent 2 is matched with the die cavity 3, so that the stability problem of the sizing agent 2 in the solidification process of the truss reinforcing steel bar 1 can be improved, and the processing process is more convenient, stable and accurate.
As a preferred embodiment of the invention, step 2) is performed by applying a release agent to the cavity working surface prior to pouring the slurry, as shown in fig. 6.
In the embodiment of the present invention, it is preferable that the mold release agent should be uniformly applied to the working surface of the cavity 3 including at least the portion of the slurry 2 to be filled before the slurry 2 is poured into the cavity 3, so that the slurry 2 can be easily released from the cavity 3 after being dried.
As shown in fig. 7, as a preferred embodiment of the present invention, the lower chord bars on both sides of the truss body are caught on both horizontal edges of the top of the mold cavity in step 3), and the upper chord bars of the truss body and the top of the web bar 12 are suspended in the middle of the slurry at the bottom of the mold cavity.
In the embodiment of the invention, preferably, the lower chord steel bars on two sides of the truss steel bar 1 are clamped on the horizontal edges on two sides of the top of the die cavity 3, the upper chord steel bars of the truss steel bar 1 and the tops of the web steel bars 12 are suspended in the middle of the slurry 2 at the bottom of the die cavity 3, and the design can be further matched
In step 4), the truss body of the winding package slurry is taken out of the die cavity, turned over for 180 degrees and stacked.
In the embodiment of the invention, after the truss steel bar 1 wrapped with the sizing agent 2 in the upper chord is taken out from the die cavity 3, the truss steel bar is turned over for 180 degrees and stacked, so that the sizing agent 2 can be prevented from being worn and is convenient to stack.
As shown in fig. 5, as a preferred embodiment of the invention, the die cavity is an isosceles trapezoid groove with a long side opening, two bottom corners of the trapezoid are arc-shaped chamfer angles, and the tops of two side edges of the opening end are provided with horizontal edges.
In the embodiment of the invention, the die cavity 3 is an isosceles trapezoid groove with a long side opening, two bottom corners of the trapezoid are arc-shaped chamfer angles, the tops of two side edges of the opening end are provided with horizontal edges, the horizontal edges arranged on the tops of two side edges of the opening end can limit the supporting truss steel bar 1 in the forming process of the slurry 2, the internal structural design of the die cavity 3 can finally obtain the slurry 2 with higher structural strength, the strength of the slurry 2 can reach 40-60 MPa, and the slurry 2 is not easy to crack in the production, storage, transportation, lifting and installation processes.
As shown in fig. 1-4 and 10-11, an embodiment of the present invention further provides a steel bar truss, which includes a truss body and an end structure, wherein the truss body is formed by connecting steel bars, the steel bars forming the truss body include chord steel bars 11 and web steel bars 12, the web steel bars 12 are fixedly connected between the chord steel bars 11, and the web steel bars 12 are restricted from moving in the circumferential direction and the axial direction of the chord steel bars 11 by adjusting a clamping mechanism, and the end structure is formed by fixedly covering the top of the truss body after the slurry is solidified.
In the embodiment of the invention, preferably, the truss main body can adopt truss steel bars 1, the truss steel bars 1 are of a structure commonly used in the prior art, one end of each truss steel bar 1 is connected with a solidified end structure, the end structure is formed by solidifying slurry 2 and then fixedly covering the top of the truss steel bar 1, the upper chord of the truss steel bar 1 is wrapped by the slurry 2, the compression cross section area of the upper part of the truss steel bar 1 is increased, the rigidity of the truss steel bar 1 is improved, the bearing capacity of a concrete laminated slab bottom plate prepared by wrapping the slurry 2 by the upper chord is obviously improved, the support can be reduced or omitted during the construction and installation of the concrete laminated slab bottom plate, the construction and installation efficiency is improved, and the engineering construction cost can be reduced; the truss reinforcing steel bars 1 wrapped with the sizing agent 2 are adopted to prepare the precast concrete laminated slab bottom plate, so that the precast concrete laminated slab bottom plate has good structural mechanical properties, is not easy to crack in the processes of storage, transportation, lifting and construction and installation, and the engineering quality can be effectively ensured; the structural design of the sizing agent 2 is matched with the die cavity 3, so that the stability problem of the sizing agent 2 in the solidification process of the truss reinforcing steel bar 1 can be improved, and the processing process is more convenient, stable and accurate.
As shown in fig. 2-4, as a preferred embodiment of the present invention, the cross section of the truss body is projected as an isosceles triangle, and the slurry is fixed at the vertex angle of the isosceles triangle.
In the embodiment of the invention, preferably, the truss steel bar 1 is formed by connecting a plurality of groups of steel bars and is connected to form a bracket shape of an isosceles triangle structure, the steel bars forming the truss steel bar 1 comprise chord steel bars 11 and web member steel bars 12, and the chord steel bars 11 can be divided into upper chord steel bars and lower chord steel bars.
As a preferred embodiment of the present invention, the slurry is a wedge-shaped bulk cured product of an inorganic polymer or an organic polymer.
In the embodiment of the present invention, preferably, the slurry 2 is prepared by using an inorganic polymer or an organic polymer, and sand is doped in the slurry 2, wherein the sand adopts gravel sand, middle coarse sand or mixed sand of the gravel sand and the middle coarse sand, and the gravel sand can be replaced by gravel, so that the structural strength of the slurry 2 can be improved, and the durability of a final device can be improved.
As shown in fig. 10 to 11, as a preferred embodiment of the present invention, the clamping mechanism includes an annular wrapping structure and a locking limit structure, the annular wrapping structure is sleeved at the connection position of the web bar 12 and the chord bar 11, and penetrates through the web bar 12, the chord bar 11 and the annular wrapping structure through the locking limit structure.
In the embodiment of the invention, preferably, the annular wrapping structure can adopt a limiting collar 13, the limiting collar 13 is formed by two groups of semicircular metal sheets symmetrically, threaded holes are formed in the two parts of the metal sheets of the limiting collar 13 in an aligned and penetrating manner, the limiting collar 13 is buckled on the periphery of a connecting point of the chord steel bar 11 and the web steel bar 12, the locking limiting structure can adopt a limiting bolt 14, the limiting bolt 14 is formed by matching bolts and nuts, and bolts in the limiting bolt 14 are aligned with threaded holes in the limiting collar 13, penetrate through the chord steel bar 11 and the web steel bar 12 and are fixed through nuts in the limiting bolt 14.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. A method of making a steel truss, comprising:
1) Preparing a production die cavity, fixing the open trapezoid-shaped groove section on a die support, and bending the open trapezoid-shaped groove section into a through-length open trapezoid-shaped groove section with the shape consistent with that of the die cavity through a plate folding machine;
2) Pouring slurry, cleaning a die cavity, and uniformly pouring the slurry into the die cavity in a full length mode;
3) Placing the truss main body into a mold cavity in an inverted manner, scraping the top of the slurry in the mold cavity, separating the slurry into sections with the length corresponding to the truss main body at the end part of the truss main body by adopting a segmented partition board with the same section as the mold cavity, and then laminating and curing;
4) Removing the maintenance coating film and the segmented partition plates after the slurry in the die cavity reaches the demolding strength, and demolding the truss main body with the slurry wrapped by the upper chord, so that the preparation of the steel bar truss is completed;
wherein, in the step 2), a release agent is smeared in the working surface range of the die cavity before the slurry is poured;
in the step 3), lower chord steel bars on two sides of the truss main body are clamped on horizontal edges on two sides of the top of the die cavity, and the tops of upper chord steel bars and web member steel bars of the truss main body are suspended in the middle of slurry at the bottom of the die cavity;
in the step 4), after the truss main body of the sizing agent is taken out from the die cavity, the truss main body is turned over for 180 degrees and stacked;
the die cavity is an isosceles trapezoid groove with a long side opening, two bottom corners of the trapezoid are arc-shaped chamfer angles, and the tops of two side edges of the opening end are provided with horizontal edges;
and preparing a concrete laminated slab bottom plate by adopting the steel bar truss with the sizing agent wrapped by the upper chord, wherein the top end of the steel bar truss faces downwards when preparing the concrete laminated slab bottom plate.
2. The steel bar truss prepared based on the preparation method of the steel bar truss as claimed in claim 1, which is characterized by comprising a truss main body and an end structure, wherein the truss main body is formed by connecting steel bars, the steel bars forming the truss main body comprise chord steel bars and web steel bars, the web steel bars are fixedly connected between the chord steel bars, the web steel bars are assisted to limit the movement of the web steel bars in the circumferential direction and the axial direction of the chord steel bars by adjusting a clamping mechanism, and the end structure is formed by fixedly covering the top of the truss main body after the slurry is solidified; the clamping mechanism comprises an annular wrapping structure and a locking limiting structure, the annular wrapping structure is sleeved at the connecting position of the web member steel bars and the chord member steel bars, and the annular wrapping structure is communicated with the web member steel bars, the chord member steel bars and the annular wrapping structure through the locking limiting structure.
3. The steel bar truss of claim 2 wherein the truss body cross-section is projected as an isosceles triangle and the slurry is secured at the apex angle of the isosceles triangle.
4. A steel bar truss as claimed in claim 3 wherein the slurry is a wedge-shaped block cure of an inorganic polymer or an organic polymer.
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| CN202010010298.XA CN111075115B (en) | 2020-01-06 | 2020-01-06 | Steel bar truss and manufacturing method thereof |
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| CN202010010298.XA CN111075115B (en) | 2020-01-06 | 2020-01-06 | Steel bar truss and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2575206A1 (en) * | 1984-12-20 | 1986-06-27 | Cote Francois | Arrangements strengthening the stiffness of a girder having a metal truss with an embedded base, particularly for a prefabricated floor |
| DE8801741U1 (en) * | 1988-02-11 | 1988-05-26 | Rachl, Herman, 8224 Chieming, De | |
| DE3812329A1 (en) * | 1988-04-14 | 1989-11-09 | Frank Dipl Ing Mueller | Element for floors |
| CN1131448A (en) * | 1993-07-19 | 1996-09-18 | 雷萨罗公司 | Arrangement at beam or building element and mould for making beam or building element |
| CN202416650U (en) * | 2011-11-16 | 2012-09-05 | 宝钢建筑系统集成有限公司 | Self-supporting ribbed reinforced steel bar truss concrete composite slab |
| CN103726416A (en) * | 2012-10-15 | 2014-04-16 | 中铁十局集团有限公司 | Construction method for improving percent of pass of double-block type concrete sleepers |
| CN106836600A (en) * | 2017-01-16 | 2017-06-13 | 枣庄力源电力设计有限公司 | A kind of reinforcing bar composite floor for power transformation engineering |
-
2020
- 2020-01-06 CN CN202010010298.XA patent/CN111075115B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2575206A1 (en) * | 1984-12-20 | 1986-06-27 | Cote Francois | Arrangements strengthening the stiffness of a girder having a metal truss with an embedded base, particularly for a prefabricated floor |
| DE8801741U1 (en) * | 1988-02-11 | 1988-05-26 | Rachl, Herman, 8224 Chieming, De | |
| DE3812329A1 (en) * | 1988-04-14 | 1989-11-09 | Frank Dipl Ing Mueller | Element for floors |
| CN1131448A (en) * | 1993-07-19 | 1996-09-18 | 雷萨罗公司 | Arrangement at beam or building element and mould for making beam or building element |
| CN202416650U (en) * | 2011-11-16 | 2012-09-05 | 宝钢建筑系统集成有限公司 | Self-supporting ribbed reinforced steel bar truss concrete composite slab |
| CN103726416A (en) * | 2012-10-15 | 2014-04-16 | 中铁十局集团有限公司 | Construction method for improving percent of pass of double-block type concrete sleepers |
| CN106836600A (en) * | 2017-01-16 | 2017-06-13 | 枣庄力源电力设计有限公司 | A kind of reinforcing bar composite floor for power transformation engineering |
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|---|---|
| CN111075115A (en) | 2020-04-28 |
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