CN219451267U - Stiffening prefabricated bottom plate for superposed beam - Google Patents
Stiffening prefabricated bottom plate for superposed beam Download PDFInfo
- Publication number
- CN219451267U CN219451267U CN202320923352.9U CN202320923352U CN219451267U CN 219451267 U CN219451267 U CN 219451267U CN 202320923352 U CN202320923352 U CN 202320923352U CN 219451267 U CN219451267 U CN 219451267U
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- rib
- prefabricated bottom
- stiffening
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model discloses a stiffening prefabricated bottom plate for a superposed beam, which comprises the following components: the concrete strip comprises a prefabricated bottom plate (1), a concrete strip (2) with a string-up steel bar or steel tube, a web truss rib (3) and stirrups (5); the upper chord steel bars or the steel pipes are welded with the web trusses (3) into a whole to form a truss (4), and the truss (4) is connected with the prefabricated bottom plate (1) into a whole through the web trusses (3). The construction is simple, the structure is safe and reliable, and the mold-free and support-free effects are truly realized.
Description
Technical Field
The utility model relates to the technical field of assembled buildings, in particular to a stiffening prefabricated base plate for a superposed beam.
Background
In the development of domestic assembled buildings, the existing assembled laminated beams mostly consist of common reinforced concrete, and because the reinforced concrete has low strength, high reinforced concrete content, large concrete dosage, heavy component weight, complex factory processing mould and more embedded parts, the component standardization cannot be realized, so that the component manufacturing cost is high, the connection is complex, the reinforced concrete site conflict is serious and the like are difficult to install.
Disclosure of Invention
The technical scheme adopted for solving the technical problems is that the utility model provides a stiffening prefabricated bottom plate for a superposed beam, which comprises the following components: a prefabricated bottom plate (1), a concrete strip (2) with upper chord steel bars or steel pipes and web truss steel bars (3); the upper chord steel bars or the steel pipes are welded with the web trusses (3) into a whole to form a truss (4), and the truss (4) is connected with the prefabricated bottom plate (1) into a whole through the web trusses (3).
Further preferably, the cast-in-situ laminated reinforced concrete (6) is cast on the truss (4) on site and covers the upper surface of the truss (4), and the upper part of the cast-in-situ laminated reinforced concrete (6) close to the laminated beam is also provided with a laminated beam upper longitudinal rib.
Further preferably, the web truss rib (3) is a wavy continuous bending whole steel bar or a whole hollow steel tube, and the hollow steel tube can be filled with grouting material.
Further preferably, the web trusses (3) have two groups, and the wave crests of the two groups of web trusses (3) are welded on the left side and the right side of the upper chord steel bar or the steel pipe.
Further preferably, the web trusses (3) are a group, and the web trusses (3) are welded with the bottom surface or the side surface of the upper chord steel bar or the steel pipe.
Further preferably, the bottom of the web truss rib (3) directly passes through a steel reinforcement framework hooked in the prefabricated bottom plate (1), or the bottom of the web truss rib (3) is directly wound with the stirrup (5) for tying or buckling; the bottom of the web truss rib (3) is connected with the prefabricated bottom plate (1) through a connecting piece (7), or is connected with the longitudinal rib of the superposed beam in the prefabricated bottom plate (1) through the connecting piece (7); the connecting piece (7) is a binding iron wire, a steel wire, a nylon rope, a bayonet fitting, a lantern ring, a sleeve, a bolt, a buckle, an anchor plate, a pier head, a buckle, a screw rod or a perforation pin.
Further preferably, the truss (4) further comprises a lower chord rib (8), and the bottom of the web truss rib (3) and the lower chord rib (8) are buried in the prefabricated bottom plate (1) together; the lower chord rib (8) can be arranged in parallel with the web truss rib (3) or can be arranged vertically with the web truss rib (3); the device can be arranged above the trough of the web truss rib (3) or below the trough of the web truss rib (3); the lower chord rib (8) can be arranged in a through length mode or in a segmented mode; the abdomen truss rib (3) and the lower chord rib (8) can be connected by welding or by binding or a lantern ring or a sleeve, a bolt or a group buckle or a screw rod or a perforation pin.
Further, as the preference, other longitudinal or/and transverse stress bars or distributing bars can be arranged in the concrete strip (2) with the upper chord steel bars or the steel pipes; the stress bars or the distributing bars can extend out of the concrete strip (2) with the upper chord steel bars or the steel pipes.
Further preferably, the prefabricated base plate (1) is a strip-shaped integral base plate, a reinforced concrete base plate or a cement mortar base plate, or a fiber concrete and high-ductility concrete base plate; the upper surface of the prefabricated bottom plate (1) is convex-concave.
Further preferably, the prefabricated bottom plate (1) extends outwards in the width direction, the extending part of the prefabricated bottom plate (1) is provided with a notch (9), and the bottoms of the templates (10) on two sides of the superposed beam are inserted into or fixed in the notch (9).
Further preferably, horizontal drawknot members (11) are arranged at preset positions on the upper parts of the templates (10) on the two sides of the laminated beam, and the templates (10) are fixed by the horizontal drawknot members (11) in a drawknot manner; the template (10) and the horizontal drawknot member (11) can be integrated on the prefabricated bottom plate (1) in advance, and can be installed on the prefabricated bottom plate (1) at a construction site.
Further preferably, the template (10) can be a wood die, a steel die or an aluminum die, or a disassembly-free steel mesh template or a steel mesh template sprayed with high-ductility concrete as a reinforcing template.
Further preferably, a superposed beam longitudinal rib (12) is arranged in the prefabricated bottom plate (1), and the longitudinal rib (12) is arranged along the length direction of the prefabricated bottom plate (1) and can be a prestressed rib or a common reinforcing steel bar or a mixed arrangement of the prestressed rib and the common reinforcing steel bar; the thickness of the prefabricated bottom plate (1) is 30-200mm.
Further as the preference, still be provided with stirrup (5) in prefabricated bottom plate (1), stirrup (5) are open-ended "U" font or confined "mouthful" font, stirrup (5) are along prefabricated bottom plate (1) length direction interval setting, and in prefabricated bottom plate (1) was buried to the lower bottom surface horizontal segment part of stirrup, and the interval arrangement has a plurality of superimposed beam to indulge muscle (12) on it, and a plurality of stirrup (5) and a plurality of superimposed beam indulge muscle (12) form space reinforcement skeleton, and part that stirrup (5) stretched out outside prefabricated bottom plate (1) is poured in cast-in-place superimposed layer reinforced concrete (6).
Further preferably, the width of the concrete strip (2) with the winding steel bars or pipes is 25-300mm, and the height is 20-300mm.
Further preferably, the width direction of the prefabricated bottom plate (1) extends outwards, the extending part of the prefabricated bottom plate (1) upwards forms a reinforced concrete boss (13) which plays a role of a superposed beam template, and the boss (13) can also be lifted to the bottom of the floor slab.
Further preferably, the upper surface of the prefabricated bottom plate (1) is also provided with on-site binding longitudinal ribs (14).
The utility model has the following beneficial effects:
1. the web truss ribs and the steel bars in the bottom plate are connected into a whole through connecting pieces to form a space bearing member, wherein the connecting pieces can be special connecting pieces such as bayonet pieces, fasteners, lantern rings, sleeves, bolts, group buckles, buckling, screw rods, perforation pins and the like; therefore, the most appropriate connecting piece can be selected according to different thicknesses and different stress conditions of the actual bottom plate according to local conditions, for example, the connecting piece is connected by the lantern ring, the lantern ring can be used as a cushion block of the bottom plate reinforcing steel bar, the cushion block has good height uniformity, the running position and the deviation of a small concrete cushion block are avoided, the positioning is more accurate, and the quality is more ensured. For example, the bayonet, the buckling and the bolt are connected in a mechanical connection mode, so that adverse conditions such as dislocation and slippage are avoided, the accuracy and the positioning capability are far higher than those of iron wire binding, and meanwhile, the larger pulling force can be borne, the possibility of fracture is reduced, and the fixing capability of the steel bar truss in the prefabricated bottom plate is greatly improved.
2. If the prestress steel bars are adopted in the prefabricated bottom plate, the prestress steel bars have the prestress action on the prefabricated bottom plate, the effect is like a bucket with a hoop, the crack resistance of the whole bottom plate can be enhanced, and the prefabricated bottom plate can be made thinner.
3. The reinforcement of the rigidity of the prefabricated bottom plate by the concrete strip with the winding steel bars or the steel pipes can lead the prefabricated bottom plate to have larger support-free span during installation.
4. The web truss ribs can be only one group, at the moment, the web truss ribs are welded with the bottom surface or the side surface of the upper chord steel bar, when the side surface is welded, the web truss ribs can be lifted to the top of concrete, and are directly inserted to the bottom of a mould for pouring concrete strips during manufacturing, so that the cushion block is not required to be positioned up and down, and the production and the manufacturing are more convenient and efficient.
5. The abdomen purlin still includes the lower chord muscle, when lower chord muscle sets up perpendicularly, can play the effect of transversely stabilizing the supporting rib, and is more stable when truss and prefabricated bottom plate are connected like this, and the location is more accurate.
6. The bottoms of the templates at two sides of the superposed beam are inserted and fixed in the notches, and horizontal drawknot members can be arranged in the heights of the templates at two sides to resist lateral pressure when concrete is poured according to requirements, the templates and the horizontal drawknot members can be manufactured on a prefabricated bottom plate in an integrated mode in advance, and can be mounted on the prefabricated bottom plate in a construction site, so that the templates can be truly removed, and the template manufacturing amount in the construction site is greatly reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a stiffening preform floor for a composite beam;
FIG. 2 is a schematic longitudinal cross-sectional view of a stiffening preform floor for a composite beam;
FIG. 3 is a schematic transverse cross-sectional view of a stiffening preform floor for a composite beam (II);
FIG. 4 is a schematic transverse cross-sectional view of a stiffening preform floor for a composite beam;
FIG. 5 is a schematic transverse cross-section of a stiffening preform floor for a composite beam;
FIG. 6 is a schematic view (fifth) of a transverse cross section of a stiffening preform floor for a composite beam;
FIG. 7 is a schematic view of a transverse cross section of a stiffening preform floor for a composite beam;
FIG. 8 is a schematic view (seventh) of a transverse cross section of a stiffening preform floor for a composite beam;
FIG. 9 is a schematic transverse cross-sectional view (eight) of a stiffening preform floor for a composite beam;
FIGS. 10 a-10 c are schematic views of various forms of stirrups;
FIGS. 11 a-11 o are various forms of schematic views of a truss;
FIG. 12 is a schematic view of the reinforcement cage within a stiffened prefabricated floor for a composite beam;
figure 13 is a schematic view of an embodiment of a stiffening preform floor for a composite beam.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings of embodiments of the present utility model, in which the description is given for some, but not all embodiments of the present utility model. Many variations, modifications, adaptations, and alternatives of the embodiments may occur to one skilled in the art without departing from the scope of the utility model.
Referring to fig. 1 to 13, the stiffening prefabricated bottom plate for a composite beam of the present utility model comprises: the concrete strip comprises a prefabricated bottom plate (1), a concrete strip (2) with a string-up steel bar or steel tube, a web truss rib (3) and stirrups (5); the upper chord steel bars or the steel pipes are welded with the web trusses (3) into a whole to form a truss (4), and the truss (4) is connected with the prefabricated bottom plate (1) into a whole through the web trusses (3).
And the cast-in-situ laminated reinforced concrete (6) is cast on the truss (4) on site and covers the upper surface of the truss (4).
The web truss rib (3) is a wavy continuous bending whole steel bar or a whole hollow steel tube, and high-strength filling grouting material can be filled in the hollow steel tube.
The web trusses (3) are provided with two groups, and the wave crests of the two groups of web trusses (3) are welded on the left side and the right side of the upper chord steel bar or the steel pipe.
The web trusses (3) can be only one group, and at the moment, the web trusses (3) are welded with the bottom surface or the side surface of the upper chord steel bar or the steel pipe. (describing the benefit of connecting at the side, being more firm, because the web truss muscle rises to the concrete top this moment, directly insert the die of pouring concrete strip (2) with the web truss muscle during the preparation, need not the cushion and fix a position from top to bottom, production preparation convenient and fast high efficiency more.
The bottom of the web truss rib (3) can directly pass through the steel bars hooked on the prefabricated bottom plate (1); the prefabricated bottom plate is also connected with the prefabricated bottom plate (1) through a connecting piece (7), wherein the connecting piece (7) is a binding iron wire, a steel wire, a nylon rope, a bayonet fitting, a lantern ring, a sleeve, a bolt, a buckle, an anchor plate, a pier head, a connecting buckle, a screw rod or a perforation pin.
The truss (4) further comprises a lower chord rib (8), and the bottom of the abdomen truss rib (3) and the lower chord rib (8) are buried in the prefabricated bottom plate (1) together; the lower chord rib (8) can be arranged in parallel with the web truss rib (3) or can be arranged vertically with the web truss rib (3); the device can be arranged above the trough of the web truss rib (3) or below the trough of the web truss rib (3); the lower chord rib (8) can be arranged in a through length mode or in a segmented mode; the abdomen truss rib (3) and the lower chord rib (8) can be connected by welding or by binding or a lantern ring or a sleeve, a bolt or a group buckle or a screw rod or a perforation pin.
Other longitudinal or/and transverse stress bars or distributing bars can be arranged in the concrete strip (2) with the upper chord steel bars or the steel pipes; the stress bars or the distributing bars can extend out of the concrete strip (2) with the upper chord steel bars or the steel pipes.
The prefabricated bottom plate (1) is a strip-shaped integral bottom plate, is a reinforced concrete bottom plate or a cement mortar bottom plate, or is a fiber concrete and high-ductility concrete bottom plate; the upper surface of the prefabricated bottom plate (1) is convex-concave.
The width direction of the prefabricated bottom plate (1) extends outwards, the extending part of the prefabricated bottom plate (1) is provided with a notch (9), and the bottoms of the templates (10) on two sides of the superposed beam are inserted into or fixed in the notch (9). The upper parts of the templates (10) at the two sides of the superposed beam are properly positioned, and horizontal drawknot pieces (11) can be arranged to drawknot and fix the templates (10) at the two sides of the superposed beam according to the requirement; the template (10) and the horizontal drawknot member (11) can be integrated on the prefabricated bottom plate (1) in advance, and can be installed on the prefabricated bottom plate (1) at a construction site.
The template (10) can be a traditional template such as a wood template, a steel template, an aluminum template and the like, or a disassembly-free steel mesh template or a steel mesh template sprayed with high-ductility concrete to serve as a reinforcing template.
The precast bottom plate (1) is internally provided with superposed beam longitudinal bars (12), and the longitudinal bars (12) are arranged along the length direction of the precast bottom plate (1) and can be prestressed bars or common steel bars or the mixture of the prestressed bars and the common steel bars; the thickness of the prefabricated bottom plate (1) is 30-200mm.
Still be provided with prefabricated stirrup (5) in prefabricated bottom plate (1), stirrup (5) are open-ended "U" font or confined "mouthful" font, stirrup (5) are along prefabricated bottom plate (1) length direction interval setting, and in the prefabricated bottom plate (1) was buried to the lower bottom surface horizontal segment part of stirrup, and a plurality of superimposed beam longitudinal reinforcement (12) have been arranged to the interval on it, and a plurality of prefabricated stirrups (5) and a plurality of superimposed beam longitudinal reinforcement (12) form space reinforcement skeleton, and part that stirrup (5) stretched out prefabricated bottom plate (1) outside is cast in situ superimposed layer reinforced concrete (6).
The width of the concrete strip (2) with the winding steel bars or the steel pipes is 25-300mm, and the height is 20-300mm.
The width direction of the prefabricated bottom plate (1) extends outwards, the extending part of the prefabricated bottom plate (1) upwards forms a reinforced concrete boss (13) to play a role of the composite beam dismantling-free template, and the boss (13) can also be lifted to the bottom of the floor.
The width direction of the prefabricated bottom plate (1) can not extend outwards, and the concrete at two sides of the width direction of the prefabricated bottom plate (1) extends upwards to form reinforced concrete bosses (13).
The prefabricated bottom plate (1) and reinforced concrete bosses (13) on two sides are enclosed to form a cavity, and after a plurality of longitudinal ribs of the superposed beams are bound on site at the upper part of the superposed layer of the superposed beams and the upper surface of the prefabricated bottom plate (1), reinforced concrete (6) of the superposed layer of the superposed beams is poured in the cavity in a casting mode.
At least one row of on-site binding laminated beam side longitudinal ribs and lacing wires can be arranged in the reinforced concrete (6) of the laminated beam cast-in-situ laminated layer along the height direction.
The thickness of the protective layer of the longitudinal ribs at the upper part of the superposed beam can be 10-50mm.
Claims (15)
1. Stiffening prefabricated bottom plate for superimposed beam, its characterized in that includes: a prefabricated bottom plate (1), a concrete strip (2) with upper chord steel bars or steel pipes and web truss steel bars (3); the upper chord steel bars or the steel pipes are welded with the web trusses (3) into a whole to form a truss (4), and the truss (4) is connected with the prefabricated bottom plate (1) into a whole through the web trusses (3); the precast bottom plate (1) is internally provided with a superposed beam longitudinal rib (12), the superposed beam longitudinal rib (12) is arranged along the length direction of the precast bottom plate (1), and the superposed beam longitudinal rib (12) can be a prestressed rib or a common reinforcing steel bar or a mixed arrangement of the prestressed rib and the common reinforcing steel bar; still be provided with stirrup (5) in prefabricated bottom plate (1), stirrup (5) are open-ended "U" font or confined "mouthful" font, stirrup (5) are along prefabricated bottom plate (1) length direction interval setting, and in the prefabricated bottom plate (1) was buried to the lower bottom surface horizontal segment part of stirrup (5), and on it interval arrangement had a plurality of superimposed beam indulged muscle (12), a plurality of stirrups (5) and a plurality of superimposed beam indulged muscle (12) formed space reinforcement skeleton, and part casting in cast-in-place superimposed layer reinforced concrete (6) outside stirrup (5) stretched out prefabricated bottom plate (1).
2. A stiffening preform floor for a composite beam as in claim 1, wherein: the cast-in-situ composite layer reinforced concrete (6) is further included, and the cast-in-situ composite layer reinforced concrete (6) is cast on the truss (4) on site and covers the upper surface of the truss (4).
3. A stiffening preform floor for a composite beam as in claim 1, wherein: the web truss rib (3) is a wavy continuous bent whole steel bar or a whole hollow steel tube, and the hollow steel tube can be filled with grouting material.
4. A stiffening preform floor for a composite beam as in claim 1, wherein: the web trussed ribs (3) are two groups, and the wave crests of the two groups of web trussed ribs (3) are welded on the left side and the right side of the upper chord steel bar or the steel pipe.
5. A stiffening preform floor for a composite beam as in claim 1, wherein: the web trussed ribs (3) are a group, and the web trussed ribs (3) are welded with the bottom surface or the side surface of the upper chord steel bar or the steel pipe.
6. A stiffening preform floor for a composite beam as in claim 1, wherein: the bottom of the web truss rib (3) directly passes through and is hooked on a steel reinforcement framework in the prefabricated bottom plate (1); or the bottom of the abdomen truss rib (3) is directly wound and tied with the stirrup (5); or the bottom of the abdomen truss rib (3) is connected with the prefabricated bottom plate (1) through a connecting piece (7), and the connecting piece (7) is a binding iron wire, a steel wire, a nylon rope, a bayonet fitting, a lantern ring, a sleeve, a bolt, a buckle, an anchor plate, a pier head, a buckle, a screw rod or a perforation pin.
7. A stiffening preform floor for a composite beam as in claim 1, wherein: the truss (4) further comprises a lower chord rib (8), and the bottom of the abdomen truss rib (3) and the lower chord rib (8) are buried in the prefabricated bottom plate (1) together; the lower chord rib (8) can be arranged in parallel with the web truss rib (3) or can be arranged vertically with the web truss rib (3); the lower chord rib (8) can be arranged above the trough of the web truss rib (3) and can also be arranged below the trough of the web truss rib (3); the lower chord rib (8) can be arranged in a through length mode or in a segmented mode; the abdomen truss rib (3) and the lower chord rib (8) can be connected by welding or by binding or a lantern ring or a sleeve, a bolt or a group buckle or a screw rod or a perforation pin.
8. A stiffening preform floor for a composite beam as in claim 1, wherein: other longitudinal or/and transverse stress bars or distributing bars can be arranged in the concrete strip (2) with the upper chord steel bars or the steel pipes; the stress bars or the distributing bars can extend out of the concrete strip (2) with the upper chord steel bars or the steel pipes.
9. A stiffening preform floor for a composite beam as in claim 1, wherein: the prefabricated base plate (1) is a strip-shaped integral base plate, is a reinforced concrete base plate or a cement mortar base plate, or is a fiber concrete and high-ductility concrete base plate; the upper surface of the prefabricated bottom plate (1) is convex-concave.
10. A stiffening preform floor for a composite beam as in claim 1, wherein: the width direction of the prefabricated bottom plate (1) extends outwards, the extending part of the prefabricated bottom plate (1) is provided with a notch (9), and the bottoms of the templates (10) on two sides of the superposed beam are inserted into or fixed in the notch (9).
11. A stiffening preform floor for a composite beam as in claim 1, wherein: a horizontal drawknot piece (11) is arranged at a preset position on the upper part of the templates (10) on two sides of the superposed beam, and the templates (10) are fixed by the horizontal drawknot piece (11) in a drawknot manner; the template (10) and the horizontal drawknot member (11) can be manufactured on the prefabricated bottom plate (1) in an integrated mode in advance, and can be installed on the prefabricated bottom plate (1) in a construction site.
12. Stiffening preform bottom plate for a composite beam according to claim 10 or 11, characterized in that: the template (10) can be a wood die, a steel die or an aluminum die, or a disassembly-free steel mesh template or a steel mesh template sprayed with high-ductility concrete to serve as a reinforcing template.
13. A stiffening preform floor for a composite beam as in claim 1, wherein: the width direction of the prefabricated bottom plate (1) extends outwards, and the extending part of the prefabricated bottom plate (1) upwards forms a reinforced concrete boss (13).
14. A stiffening preform floor for a composite beam as in claim 1, wherein: the concrete on two sides of the prefabricated bottom plate (1) in the width direction extends upwards to form reinforced concrete bosses (13).
15. A stiffening preform floor for a composite beam as in claim 1, wherein: the upper surface of prefabricated bottom plate (1) still is provided with on-the-spot ligature longitudinal bar (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320923352.9U CN219451267U (en) | 2023-04-23 | 2023-04-23 | Stiffening prefabricated bottom plate for superposed beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320923352.9U CN219451267U (en) | 2023-04-23 | 2023-04-23 | Stiffening prefabricated bottom plate for superposed beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219451267U true CN219451267U (en) | 2023-08-01 |
Family
ID=87414741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320923352.9U Active CN219451267U (en) | 2023-04-23 | 2023-04-23 | Stiffening prefabricated bottom plate for superposed beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219451267U (en) |
-
2023
- 2023-04-23 CN CN202320923352.9U patent/CN219451267U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103114669B (en) | Ribbed steel bar truss concrete superimposed sheet and construction method thereof | |
| US3577504A (en) | Method of manufacturing a girder with a web of reinforced and/or prestressed concrete | |
| JP2004520511A (en) | Prestressed synthetic truss girder and method of manufacturing the same | |
| CN113062197B (en) | Assembly type stiffening large cantilever corrugated steel web PC combined box girder and construction method thereof | |
| CN114197753B (en) | UHPC shuttering type steel reinforced concrete composite cylinder-shaped steel beam combined frame and construction method | |
| CN212773147U (en) | Prefabricated assembly part outsourcing honeycomb steel-concrete combination beam | |
| CN102418387A (en) | Post-tensioning external prestressed steel beam and pre-tensioning prestressed superposed beam combined building structure system and construction technology thereof | |
| CN102808371A (en) | Simply-supported-to-continuous prefabricated integrally-cast superposed continuous bridge and construction method | |
| CN109555252B (en) | Floor slab with rectangular ribs extending outwards, shear wall structure and connecting method | |
| KR101024991B1 (en) | Hollowness slab type-deck plate structure and contruction method thereof | |
| CN219451267U (en) | Stiffening prefabricated bottom plate for superposed beam | |
| DK177889B1 (en) | System and Method for biaxial semi-prefabricated lightweight concrete slab | |
| KR100522298B1 (en) | Improved prestressed steel reinforced concrete beam and bridge construction method using the same beam | |
| CN111962767A (en) | Web plate open-hole section steel partially-wrapped concrete composite beam and construction method thereof | |
| KR101650431B1 (en) | Precast wide composite girder with built up steel beam and prestressed concrete | |
| CN215670408U (en) | Node connection structure of rib-outlet composite floor slab and cast-in-situ beam | |
| CN102808372A (en) | Simply supported prefabricated integrally-cast superposed bridge and construction method thereof | |
| CN212773148U (en) | T-shaped composite beam with truss precast slab partially wrapped with honeycomb steel | |
| CN211666086U (en) | Prefabricated superposed beam | |
| CN210767205U (en) | Fabricated building | |
| CN211523705U (en) | Prefabricated prestressed ribbed bottom plate and concrete composite slab | |
| CN220184419U (en) | Reinforced prefabricated base plate or beam member | |
| CN106381960A (en) | Constructional building | |
| CN220184399U (en) | Reinforced prefabricated bottom plate component and floor system | |
| CN202830729U (en) | First simply supported then continuously supported precast integral-pouring stacking continuous bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |