CN113502974B - Embedded bottom chord herringbone frame rib plate assembled double-T plate - Google Patents
Embedded bottom chord herringbone frame rib plate assembled double-T plate Download PDFInfo
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- CN113502974B CN113502974B CN202110935716.0A CN202110935716A CN113502974B CN 113502974 B CN113502974 B CN 113502974B CN 202110935716 A CN202110935716 A CN 202110935716A CN 113502974 B CN113502974 B CN 113502974B
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- 230000008901 benefit Effects 0.000 claims abstract description 12
- 239000004567 concrete Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000009417 prefabrication Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- 238000003860 storage Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/38—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to an embedded type double T-shaped plate with a bottom chord rib plate, which comprises wing plates, a herringbone rib plate and an embedded type bottom chord, wherein the herringbone rib plate is arranged above the embedded type bottom chord and connected with the bottom chord, the wing plates are tiled above the herringbone rib plate and connected with the herringbone rib plate, the herringbone rib plate comprises at least two prefabricated herringbone frames, and the herringbone rib plate is assembled by taking a single herringbone frame as a basic unit. The double T-shaped plate structure of the rib plate assembly type of the herringbone frame is prefabricated in a split mode, assembled on site, convenient to transport and store in a storage yard, cost-saving, and convenient to improve, so that construction period is greatly shortened, economic benefits are brought, and the double T-shaped plate structure has a wide application prospect and can bring great pushing effect to the development of assembly type buildings.
Description
Technical Field
The invention relates to the technical field of concrete structures in civil engineering, in particular to an assembled double-T plate, and specifically relates to an embedded double-T plate with a bottom chord herringbone frame rib plate.
Background
In recent years, the assembled structure has become a development trend of the building industry, and the production and manufacture of prefabricated components are an important part of the assembled structure, wherein the double-T plate integrates the beam and the plate into a whole in a unique structural form, so that the assembled structure has good structural performance, rapid construction speed and low manufacturing cost, and can be manufactured into a bearing component with large span, large coverage area and economy. The double T plate consists of wing plates and two rib plates, wherein the wing plates are direct bearing surfaces of external loads and have the plate function, and the double T plate is used as a flange when the T-shaped beam is used. The wing plate has the characteristics of multiple functions of one material, and compared with a traditional beam plate system, the double-T plate can save materials and reduce working procedures.
When the span of the double-T plate is large, the double-T plate has to be manufactured on site due to the fact that the huge overall size of the double-T plate occupies a large space and is limited by transportation. The problem of on-site manufacturing of the double-T plate still exists, namely the huge space volume of the integral double-T plate occupies a large number of storage yards, and the stacking requirement cannot be met, so that the integral double-T plate is difficult to use. And even when the length of the double T plate is smaller, the double T plate occupies larger cargo space, so that the transportation capacity is limited, the rise of transportation cost and the engineering progress lag are brought, and the popularization of the double T plate is not facilitated. In addition, the double T-plate on-site open-air cast-in-place production is also influenced by typhoons, heavy rain, low-temperature weather and other factors, and the progress is also influenced. Practice proves that: the traditional construction method of integrally manufacturing the double T-shaped plates is a bottleneck severely restricting the construction period, often causes the construction period to be multiplied, and reflects the advantages of an assembled structure.
In the prior art, a technology for separately prefabricating and recombining wing plates and rib plates into an integral double-T plate is provided, so that the problems are solved. However, engineering practical and theoretical studies indicate that: when the span of the double T plate is large, the dead weight of the double T plate is increased along with the span, but the double T plate is increased along with the span, so that the double T plate is not linearly increased, and the engineering cost is also increased along with the span. The main reasons are that the increase of the rib plate height is nonlinear, the increase of the rib plate dead weight is nonlinear, the rib plate is made into a truss form, and the problem can be solved, but the storage and transportation space required by the integral prefabrication of the truss, the complex reinforcement of the truss, the complex die system and the expensive cost are all restricted.
Accordingly, further innovative approaches are needed to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the embedded double-T plate with the rib plates of the herringbone frame of the lower chord, which can be quickly and conveniently manufactured and transported and can improve the applicability and the universality of engineering application.
In order to achieve the above purpose, the embedded double T-shaped plate with the bottom chord herringbone frame rib plates adopts the following technical scheme:
the double T-shaped plate comprises wing plates, a herringbone frame rib plate and a lower chord member, wherein the herringbone frame rib plate is arranged above the lower chord member and connected with the lower chord member, the wing plates are flatly paved above the herringbone frame rib plate and connected with the herringbone frame rib plate, the herringbone frame rib plate comprises at least two prefabricated herringbone frames, and the herringbone frame rib plate is assembled by taking a single herringbone frame as a basic unit.
The 'V' -shaped frame and the 'eight' -shaped frame are the same in meaning, and are inverted to form a 'Y' -shaped frame or an inverted 'eight' -shaped frame, and the 'V' -shaped frame or the inverted 'V' -shaped frame are all commonly called as the 'V' -shaped frame in the invention, and the 'V' -shaped frame is made of concrete, steel or steel-concrete composite materials.
The herringbone frame is integrated and comprises a first limb and a second limb, the axes of the first limb and the second limb are set to be set angles, and the upper ends of the first limb and the second limb are connected into a whole.
The herringbone frames are arranged along the axis direction of the lower chord member, and the end parts of the adjacent herringbone frames are abutted against each other.
The herringbone frame, the wing plates and the lower chords form a vertical truss together, the herringbone frame is used as a web member of the truss to be integrally sheared (the first limb and the second limb are only stressed by axial force), the wing plates are used as upper chords (pressed horizontally), and the lower chords are used as lower (horizontally) tension chords. The truss form, while saving material and reducing dead weight compared to solid plates, is a complex and expensive mold required for prefabrication, and the complexity of the reinforcement within the overall truss, with respect to a fully prefabricated truss, or a double T-plate with ribs provided as trusses, such that the aforementioned advantages of the truss are partially offset. The web member of the truss is decomposed into simple basic units by adopting the herringbone rib plates, the repetition rate is high, the die cost is saved, the rib arrangement is standardized and simplified, the advantages of the solid rib plates and the truss rib plates are integrated, the defects of the web member are abandoned, and the web member is an optimized concept. Moreover, the form of the propeller strut is not only an overall advantage, but also a convenience in installation, and is also an optimal concept, with respect to the inconvenience of the unstable and complex and difficult to control in the case of the disassembly of the truss web into individual tension or compression bars.
Further, the lower end of the herringbone frame is provided with an embedded space for placing the embedded lower chord member, the frame body, close to the embedded space, of the lower end of the herringbone frame is provided with an anti-slip groove, and post-sizing agent is injected into the embedded space for connecting the lower chord member with the anti-slip groove.
Further, the frame body of herringbone frame lower extreme be close to embedded space department and be provided with the anticreep arris, the embedded space is interior to inject rearmounted thick liquid for link together anticreep arris and bottom chord, prevent that bottom chord from breaking away from with the herringbone frame.
The lower chord member is embedded, the embedded lower chord member is arranged inside the lower end of the herringbone frame, namely, the lower chord member body is arranged inside the herringbone frame body.
Further, the lower chord member is arranged as a hollow pipe body. The pipe body material is concrete, steel or steel concrete composite material.
Furthermore, a rib body is additionally arranged in the pipe body, the rib body can apply prestress to stretch the lower chord member, the rib body is made of steel, carbon fiber or high-strength engineering material, and the steel rib body is made of steel bars and prestress ribs (steel strands, steel wires or prestress screw bars and the like).
The wing plate is internally provided with holes, and the upper end of the herringbone frame is arranged in the holes of the wing plate. The wing plate material is concrete, steel or steel concrete composite material.
Further, the wing plates are arranged in a sectional mode, each section of wing plate is arranged as a wing plate, holes are formed in the wing plates, and the upper ends of the herringbone frames are arranged in the holes of the wing plates.
Further, the joint of the lower chord member and the herringbone frame is provided with an anti-slip protrusion for preventing the sliding of the lower end of the herringbone frame and the lower chord member, the anti-slip protrusion is in a strip shape, a block shape or a dot shape, and the material is concrete, steel concrete composite material, plastic or wood. The anti-slip protrusion and the lower chord are arranged as a whole or are assembled or connected in a split way.
Further, the herringbone frame is provided with an anti-slip groove at the joint of the herringbone frame and the lower chord member, and an anti-slip protrusion of the rear slurry coating the lower chord member is arranged in the anti-slip groove.
Further, a wedging body is arranged between the upper end of the propeller strut and the inner opening of the wing plate.
The end part of the double T-shaped plate assembled by the rib plates of the herringbone frame is provided with an end rod connecting wing plate and a lower chord member for bearing the pressure of the support, the end rod is vertically arranged, and the herringbone frame, the lower chord member and the end rod are arranged in a vertical plane.
Compared with the existing double-T plate, the embedded double-T plate with the rib plates of the lower chord propeller strut has the following advantages:
1. the herringbone frame fully exerts the advantage of truss stress, reduces the dead weight of the herringbone frame rib plates, reduces materials with lower efficiency in the solid rib plates, improves the utilization rate of the materials, and expands the span of the double T plates in an efficient manner;
2. the rib plate of the herringbone frame takes a single herringbone frame as a basic unit, the prefabrication repetition rate is greatly improved, the advantages and the strength of prefabrication assembly are exerted, after the solid rib plate is arranged into a truss rib plate, a steel mould used in prefabrication of concrete is more complex and the cost is greatly increased, after the herringbone frame rib plate is adopted, the steel mould used in prefabrication becomes extremely simple and the cost is obviously reduced, compared with a double T plate of the integral solid rib plate, the cost of the steel mould is reduced from tens of millions of yuan and millions of yuan to thousands of yuan and hundreds of yuan, the disadvantage that the cost of the prefabricated assembly type steel mould is large is completely improved, and the application and popularization of the prefabricated assembly type steel mould are facilitated;
3. the cost of the steel mould of the wing plate is obviously reduced as the cost of the propeller strut is obviously reduced;
4. the storage and transportation cost of the double T-shaped plates of the rib plates of the herringbone frame is greatly reduced, and the convenience is obviously improved;
5. in the field of double T plate assembly, as each segment has reached strength in advance, only partial rainproof measures (such as that workers wear umbrellas or wear rain capes) are needed, the double T plate assembly can be still carried out in severe environments such as rainy days, low temperature and the like, and the construction speed is increased.
In a word, the embedded type lower chord herringbone frame rib plate double-T plate can save cost, shorten construction period (the construction period is the cost in many times), improve efficiency, improve construction convenience, and enable the double-T plate to have wider application prospect, so that the double-T plate is more suitable for being an optimal choice of an assembled building.
Drawings
Fig. 1 is a side elevation view of the propeller strut of the present invention.
Fig. 2 is a side elevation view of the assembled position of the propeller strut of the present invention.
Fig. 3 is a longitudinal section of the propeller strut of the present invention after assembly with a wing panel and embedded bottom chords.
FIG. 4 is a cross-sectional view of the present invention after the propeller strut is assembled with the wing panels and embedded bottom chords.
FIG. 5 is a cross-sectional view of the embedded bottom chord and the propeller strut of the present invention in positional relationship.
FIG. 6 is a longitudinal cross-sectional view of the embedded bottom chord and the propeller strut of the present invention in position.
FIG. 7 is a horizontal cross-sectional view of the positional relationship of the embedded bottom chord and the propeller strut of the present invention.
Reference numerals:
1. herringbone frame
11. First limb part
12. Second limb
13. Anticreep arris
14. Embedded space
141. Anti-slip groove
2. Wing plate
3. Lower chord
31. Rib body
32. Anti-slip boss
4. End rod
5. Post-slurry
Detailed Description
In order to make the technical contents of the present invention more clearly understood, the following examples are specifically described.
Referring to fig. 1 to 7, the double-T-shaped rib plate of the herringbone frame comprises a herringbone frame 1, a wing plate 2, an embedded lower chord 3 and an end rod 4. The rib plate of the lambdoidal frame 1 is arranged above the embedded lower chord member 3 and is connected with the embedded lower chord member 3, the wing plate 2 is flatly paved above the rib plate of the lambdoidal frame 1 and is connected with the rib plate of the lambdoidal frame 1, the end rod 4 is connected with the wing plate 2 and the lower chord member 3, and the lambdoidal frame 1, the embedded lower chord member 3 and the end rod 4 are arranged in a vertical plane. The rib plate of the lambdoidal frame 1 comprises a plurality of prefabricated lambdoidal frames 1, and the rib plate is assembled by taking a single lambdoidal frame 1 as a basic unit. The herringbone frame 1 is an integral body and comprises a first limb 11 and a second limb 12, the axes of the first limb 11 and the second limb 12 are set to be set angles, and the upper ends of the first limb 11 and the second limb 12 are connected into an integral body. The utility model provides a herringbone frame 1 lower extreme be provided with anticreep arris 13 and embedded space 14, the support body that herringbone frame 1 lower extreme is close to embedded space 14 be provided with anti-skidding recess 141, embedded lower chord member 3's cavity body in be provided with muscle body 31, embedded lower chord member 3 be provided with non-slip raised 32 in the embedded space 14 department of herringbone frame 1, embedded space 14 and embedded lower chord member 3 between be provided with post slurry 5.
Example 1
The first step: simultaneously prefabricating a herringbone frame, wing plates, a lower chord member and an end rod in parallel;
and a second step of: transporting the prefabricated components to an assembly site, fixing two mutually parallel lower chords at set positions, buckling a herringbone frame on the lower chords from above, grouting in an embedded space of the herringbone frame to fix the herringbone frame and the lower chords, forming two parallel herringbone frame rib plates, and connecting the two herringbone frame rib plates by adopting a transverse connection auxiliary component;
and a third step of: spreading the wing plates on the herringbone frame, and placing the upper ends of the herringbone frame into the openings of the wing plates;
fourth step: the rib body is placed in the lower chord member body, and the rib body is tensioned so as to tension the lower chord member;
fifth step: and hoisting the assembled and integrated embedded double T-shaped plates of the rib plates of the herringbone frame of the lower chord member to a required position.
The embedded double-T plate structure with the bottom chord herringbone frame rib plates provided by the invention adopts the steps of piecewise prefabrication and on-site assembly, is convenient for transportation and storage in a storage yard, saves cost, improves convenience, greatly reduces construction period, brings economic benefit, has wide application prospect, and has great pushing effect on the development of an assembled building.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (4)
1. The double T-shaped plate is characterized in that the double T-shaped plate comprises wing plates, a herringbone frame rib plate and an embedded lower chord, wherein the herringbone frame rib plate is arranged above the lower chord and connected with the lower chord, the wing plates are tiled above the herringbone frame rib plate and connected with the herringbone frame rib plate, the herringbone frame rib plate comprises at least two prefabricated herringbone frames and is assembled by taking a single herringbone frame as a basic unit, and the embedded lower chord is arranged in the herringbone frame body;
the herringbone frame is made of concrete, is integrally prefabricated, forms a vertical truss together with the wing plates and the lower chord members, is integrally formed and comprises a first branch and a second branch, the axes of the first branch and the second branch are set to be at preset angles, the upper ends of the first branch and the second branch are connected into a whole, the herringbone frames are arranged along the axis direction of the lower chord members, and the end parts of the adjacent herringbone frames are abutted against the end parts; the herringbone frame is used as a web member of the truss to be sheared integrally, the first branch limb and the second branch limb are only subjected to axial force, the wing plates are used as upper chords and are pressed horizontally, and the lower chords are used as lower horizontal tension chords; compared with a double T plate of a truss with integrally prefabricated rib plates, the truss saves materials and reduces dead weight compared with a solid plate, but the die required by prefabrication is complex and expensive, and the complexity of rib arrangement in the whole truss partially counteracts the advantages of the truss, and the adoption of the herringbone frame rib plates breaks down the web members of the truss into simple basic units, so that the repetition rate is high, the die cost is saved, the rib arrangement is standardized and simplified, the advantages of the solid rib plates and the truss rib plates are integrated, and the defects of the web members are abandoned; compared with the method that the truss web member is disassembled into a single tension or compression rod member, the truss web member is unstable and complex in installation and difficult to control, has the overall advantage and the convenience in installation;
the joint part of the lower chord member and the herringbone frame is provided with an anti-slip bulge which is used for preventing the lower end of the herringbone frame from sliding with the lower chord member;
the lower end of the herringbone frame is provided with an embedded space for placing the embedded lower chord member, a frame body, close to the embedded space, of the lower end of the herringbone frame is provided with an anti-slip groove, and post-sizing agent is injected into the embedded space and used for connecting the lower chord member with the anti-slip groove; the lower chord member is arranged as a hollow pipe body; a rib body is additionally arranged in the pipe body and used for applying prestress to stretch the lower chord; the inside of the wing plate is provided with a hole, and the upper end of the propeller strut is arranged in the hole of the wing plate;
the embedded type double T-shaped plate of the rib plate of the lower chord propeller strut is implemented by the following method:
the first step: simultaneously prefabricating a herringbone frame, wing plates, a lower chord member and an end rod in parallel;
and a second step of: transporting the prefabricated components to an assembly site, fixing two mutually parallel lower chords at set positions, buckling a herringbone frame on the lower chords from above, grouting in an embedded space of the herringbone frame to fix the herringbone frame and the lower chords, forming two parallel herringbone frame rib plates, and connecting the two herringbone frame rib plates by adopting a transverse connection auxiliary component;
and a third step of: spreading the wing plates on the herringbone frame, and placing the upper ends of the herringbone frame into the openings of the wing plates;
fourth step: the rib body is placed in the lower chord member body, and the rib body is tensioned so as to tension the lower chord member;
fifth step: and hoisting the assembled and integrated embedded double T-shaped plates of the rib plates of the herringbone frame of the lower chord member to a required position.
2. The embedded bottom chord propeller strut rib plate assembled double-T plate according to claim 1, wherein the strut body at the bottom end of the propeller strut is provided with an anti-drop rib near the embedded space, and the embedded space is filled with post-pulp for connecting the anti-drop rib with the bottom chord, so as to prevent the bottom chord from being separated from the propeller strut.
3. The embedded bottom chord herringbone frame rib plate assembly type double-T plate according to claim 1, wherein the wing plates are arranged in a sectional mode, each section of wing plate is arranged as a wing plate, holes are formed in the wing plates, and the upper ends of the herringbone frames are arranged in the holes of the wing plates.
4. The double-T panel of any one of claims 1 to 3, wherein the ends of the double-T panel are provided with end bars for connecting the wing panels and the bottom chords, the end bars are vertically arranged, and the herringbone frame, the bottom chords and the end bars are arranged in a vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110935716.0A CN113502974B (en) | 2021-08-16 | 2021-08-16 | Embedded bottom chord herringbone frame rib plate assembled double-T plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110935716.0A CN113502974B (en) | 2021-08-16 | 2021-08-16 | Embedded bottom chord herringbone frame rib plate assembled double-T plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113502974A CN113502974A (en) | 2021-10-15 |
| CN113502974B true CN113502974B (en) | 2023-12-22 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050225172A1 (en) * | 2004-04-12 | 2005-10-13 | Lionel Brightwell | Open web trimmable truss with self locking joint |
| US20120255255A1 (en) * | 2011-04-11 | 2012-10-11 | Juan Lin | Aluminium alloy truss structure |
| CN209799160U (en) * | 2019-02-25 | 2019-12-17 | 上海城建建设实业(集团)有限公司 | split integrated type double-T plate structure for concrete member |
| CN111139958A (en) * | 2020-02-24 | 2020-05-12 | 吴美君 | Building floor heat preservation and sound insulation system and construction method thereof |
| CN211948924U (en) * | 2019-12-10 | 2020-11-17 | 河南远大可持续建筑科技有限公司 | Connecting assembly of steel structure building |
| CN212317492U (en) * | 2020-01-14 | 2021-01-08 | 福建建工集团有限责任公司 | Vertical pre-buried threading pipe structure in roof beam of conveniently taking over |
-
2021
- 2021-08-16 CN CN202110935716.0A patent/CN113502974B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050225172A1 (en) * | 2004-04-12 | 2005-10-13 | Lionel Brightwell | Open web trimmable truss with self locking joint |
| US20120255255A1 (en) * | 2011-04-11 | 2012-10-11 | Juan Lin | Aluminium alloy truss structure |
| CN209799160U (en) * | 2019-02-25 | 2019-12-17 | 上海城建建设实业(集团)有限公司 | split integrated type double-T plate structure for concrete member |
| CN211948924U (en) * | 2019-12-10 | 2020-11-17 | 河南远大可持续建筑科技有限公司 | Connecting assembly of steel structure building |
| CN212317492U (en) * | 2020-01-14 | 2021-01-08 | 福建建工集团有限责任公司 | Vertical pre-buried threading pipe structure in roof beam of conveniently taking over |
| CN111139958A (en) * | 2020-02-24 | 2020-05-12 | 吴美君 | Building floor heat preservation and sound insulation system and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN113502974A (en) | 2021-10-15 |
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