Support-free and mold-free reinforced concrete frame structure of fiber concrete laminated slab

Abstract

The utility model discloses a support-free and mold-free reinforced concrete frame structure of a fiber concrete composite slab, which comprises a plurality of distributed large steel mold cast-in-place frame columns with brackets, and a prefabricated frame beam arranged between every two adjacent large steel mold cast-in-place frame columns with brackets, the two ends of the prefabricated frame beams are placed on corbels of the corresponding large steel mold cast-in-place frame columns with the corbels respectively and are in lap joint with the large steel mold cast-in-place frame columns with the corbels to form beam-column joints, at least one prefabricated secondary beam is placed on the two oppositely-arranged prefabricated frame beams, and fiber concrete floors are laid on the prefabricated frame beams and the prefabricated secondary beams. According to the support-free and mold-free reinforced concrete frame structure of the fiber concrete laminated slab, support-free and mold-free floor is realized in the whole construction process, and the construction efficiency and the construction quality are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a support-free and formwork-free reinforced concrete frame structure of a fiber concrete composite board. Background Art

[0002] Reinforced concrete frame structure is a common and widely used structural form in the field of modern construction, with good earthquake and wind resistance. At present, most reinforced concrete frame structures are mainly completed by cast-in-place method. The traditional cast-in-place frame structure has a large amount of on-site support and formwork construction, a long construction period, difficulty in on-site positioning of cast-in-place steel bars, a large amount of cast-in-place pouring, and it is difficult to ensure the construction quality. Although some reinforced concrete frame structures are built by prefabrication and assembly, the prefabricated frame structure has high requirements for construction accuracy, and the quality of on-site grouting construction is difficult to ensure. In addition, during the construction process, it is still necessary to build a support system for prefabricated components such as prefabricated beams and prefabricated floor slabs. The cost of setting up the support system is high, the construction speed is slow, and a lot of manpower and material resources are consumed during the construction process. Utility Model Content

[0003] The utility model aims at providing a fiber concrete composite board support-free and formwork-free reinforced concrete frame structure so as to realize support-free and formwork-free floor in the whole construction process.

[0004] In order to achieve the above-mentioned purpose, the technical solution proposed by the utility model is:

[0005] A fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure comprises: a plurality of distributed large steel formwork corbel cast-in-place frame columns, a prefabricated frame beam is arranged between each two adjacent large steel formwork corbel cast-in-place frame columns, two ends of the prefabricated frame beam are respectively placed on the corbels of the corresponding large steel formwork corbel cast-in-place frame columns, and overlapped with the large steel formwork corbel cast-in-place frame columns to form a beam-column node, at least one prefabricated secondary beam is placed on two relatively arranged prefabricated frame beams, and a fiber concrete floor slab is laid on the prefabricated frame beams and the prefabricated secondary beams.

[0006] Preferably, the large steel formwork cast-in-place frame column with corbels comprises: a steel formwork and a cast-in-place frame column with corbels cast in the steel formwork, and the cast-in-place frame column with corbels is configured with column reinforcements preset in the steel formwork and corbel reinforcements connected to the column reinforcements.

[0007] Preferably, the fiber concrete floor slab comprises: a plurality of precast base plates laid sequentially on the precast frame beams and the precast secondary beams along the length direction of the precast secondary beams, the precast base plates being provided with steel trusses perpendicular to the precast secondary beams, and a post-cast overlapping layer cast on the precast base plates, the precast frame beams and the precast secondary beams, the post-cast overlapping layer being pre-embedded with embedded reinforcements tied and connected with the steel trusses.

[0008] Preferably, the reinforcement of the prefabricated frame beams and prefabricated secondary beams extends upward and is buried in the post-cast laminated layer.

[0009] Preferably, the steel truss includes: an upper chord, two web steel bars and two lower chords, the bottoms of the two web steel bars are embedded in the prefabricated base plate, the upper chord is connected to the tops of the two web steel bars, and the bottom of each web steel bar is connected to a lower chord located above the prefabricated base plate.

[0010] Preferably, the embedded reinforcement includes: a plurality of slab bottom connecting steel bars, a plurality of slab bottom steel bars, a plurality of slab surface connecting steel bars and a plurality of slab surface steel bars, the lower chord bars of the steel trusses on both sides of the prefabricated secondary beam are connected by the slab bottom connecting steel bars, the plurality of slab bottom steel bars are laid in a direction parallel to the lower chord bars, the slab bottom steel bars are vertically tied to the lower chord bars to form the floor slab bottom bars, the upper chord bars of the steel trusses on both sides of the prefabricated secondary beam are connected by the slab surface connecting steel bars, the plurality of slab surface steel bars are laid in a direction parallel to the upper chord bars, the slab surface steel bars are vertically tied to the upper chord bars to form the floor slab surface bars.

[0011] Preferably, the prefabricated frame beams are pre-tensioned partially prestressed concrete frame beams, and the prefabricated secondary beams are pre-tensioned partially prestressed concrete secondary beams.

[0012] Preferably, it also includes a plurality of grouting corrugated pipes embedded in the foundation, and the longitudinal reinforcements of the large steel formwork with corrugated corrugated pipes are inserted into the grouting corrugated pipes.

[0013] Preferably, it also includes a pad arranged on the corbel of the large steel formwork corbel cast-in-place frame column, and the prefabricated frame beam is placed on the pad.

[0014] Preferably, both ends of the prefabricated secondary beam are provided with resting lugs, and the prefabricated frame beam is provided with corresponding resting grooves for resting the resting lugs.

[0015] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: the utility model uses large steel formwork with corbel cast-in-place frame columns as supports, places prefabricated frame beams on the large steel formwork with corbel cast-in-place frame columns, places prefabricated secondary beams on the prefabricated frame beams, and lays fiber concrete floor slabs on the prefabricated frame beams and prefabricated secondary beams. The floor is free of support and formwork in the entire construction process, which greatly improves the construction efficiency and construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a preferred embodiment of the utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the central beam-column node.

[0018] Figure 3 for Figure 1 Schematic top view of .

[0019] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the prefabricated base plate.

[0020] Figure 5 for Figure 1 Schematic diagram of the connection node between the precast frame beam and the precast secondary beam.

[0021] Figure 6 and Figure 7 for Figure 5 AA section diagram.

[0022] Figure 8 for Figure 1 Schematic diagram of the connection node between the medium and large steel formwork cast-in-place frame columns with corbels and the prefabricated frame beams.

[0023] Among them: 1. Large steel formwork with corbel cast-in-place frame column; 11. Corbel; 2. Prefabricated frame beam; 21. Shelving notch; 3. Beam-column joint; 4. Prefabricated secondary beam; 41. Shelving cantilever; 5. Fiber concrete floor; 51. Prefabricated bottom plate; 52. Steel truss; 521. Upper chord; 522. Web bar reinforcement; 523. Lower chord; 53. Post-cast superimposed layer; 54. Embedded reinforcement; 541. Slab bottom connecting steel bar; 542. Slab bottom steel bar; 543. Slab surface connecting steel bar; 544. Slab surface steel bar; 6. Pad. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figures 1 to 8 As shown, the present embodiment discloses a fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure, which includes: a large steel formwork with corbel cast-in-place frame column 1, a prefabricated frame beam 2, a prefabricated secondary beam 4 and a fiber concrete floor 5. A plurality of large steel formwork with corbel cast-in-place frame columns 1 are distributed, and a prefabricated frame beam 2 is provided between any two adjacent large steel formwork with corbel cast-in-place frame columns 1, and both ends of the prefabricated frame beam 2 are respectively placed on the corbels 11 of the corresponding large steel formwork with corbel cast-in-place frame columns 1, and the prefabricated frame beam 2 and the large steel formwork with corbel cast-in-place frame column 1 are overlapped to form a beam-column node 3, and a prefabricated secondary beam 4 is placed between the two relatively arranged prefabricated frame beams 2, and a fiber concrete floor 5 is laid on the prefabricated frame beam 2 and the prefabricated secondary beam 4.

[0026] Specifically, the large steel mold with corbel cast-in-place frame column 1 of this embodiment comprises: a steel mold and a cast-in-place frame column with corbel cast in the steel mold, wherein the cast-in-place frame column with corbel is provided with column reinforcement and corbel reinforcement. The steel mold is used for casting and forming the cast-in-place frame column with corbel, has a fast construction speed and good integrity, and after the cast-in-place frame column with corbel is formed, the steel mold can be removed for reuse, thereby saving construction costs.

[0027] In order to facilitate the construction of the large steel formwork with corbel cast-in-place frame column 1, a grouting corrugated pipe can be pre-buried in the foundation, and the column reinforcement and corbel reinforcement are tied and formed and then loaded into the steel formwork. The two are hoisted together and inserted upside down so that the longitudinal reinforcement of the large steel formwork with corbel cast-in-place frame column 1 is inserted into the grouting corrugated pipe. The steel formwork is supported and reinforced, and then concrete is poured. The formwork can be demoulded when the concrete strength reaches 70%.

[0028] The reinforcement of the prefabricated frame beam 2 of this embodiment extends upward from the prefabricated frame beam 2, and the reinforcement of the prefabricated secondary beam 4 extends upward from the prefabricated secondary beam 4. The prefabricated frame beam 2 adopts a pre-tensioned partially prestressed concrete frame beam, and the prefabricated secondary beam 4 adopts a pre-tensioned partially prestressed concrete secondary beam, so as to effectively improve the crack resistance and rigidity of the prefabricated components, and improve the seismic resistance and bearing capacity of the frame structure.

[0029] When the prefabricated frame beams 2 are not at the same height in the vertical direction, a pad 6 can be placed between the corbels 11 of the large steel formwork corbel cast-in-place frame column 1 and the prefabricated frame beams 2 to ensure that the top surfaces of the prefabricated frame beams 2 are flush.

[0030] The prefabricated frame beam 2 and the prefabricated secondary beam 4 of this embodiment are connected by a mortise and tenon structure. Both ends of the prefabricated secondary beam 4 are respectively provided with a resting lug 41. The prefabricated frame beam 2 is correspondingly provided with a matching resting groove 21, and the resting lug 41 is rested in the resting groove 21.

[0031] The fiber concrete floor 5 of this embodiment includes: a plurality of precast bottom plates 51 laid in sequence along the length direction a of the precast secondary beam 4 , and a post-cast superimposed layer 53 cast in situ on the precast bottom plates 51 , the precast frame beam 2 and the precast secondary beam 4 .

[0032] The prefabricated bottom plate 51 is provided with a steel truss 52 which is arranged perpendicular to the prefabricated secondary beam 4. The steel truss 52 includes an upper chord 521, two web steel bars 522 and two lower chords 523. The upper chord 521 is welded between the tops of the two web steel bars 522. A lower chord 523 located above the prefabricated bottom plate 51 is welded to the bottom of each web steel bar 522. The bottom of the web steel bars 522 is pre-buried in the prefabricated bottom plate 51.

[0033] The post-cast superposition layer 53 is provided with embedded reinforcement 54 tied and connected with the steel bar truss 52 to form the floor surface reinforcement and the floor bottom reinforcement. The embedded reinforcement 54 includes: a plurality of slab bottom connecting steel bars 541, slab bottom steel bars 542, slab surface connecting steel bars 543 and slab surface steel bars 544. The lower chord bars 523 of the steel bar trusses 52 on both sides of the precast secondary beam 4 are connected into one by the slab bottom connecting steel bars 541, and the slab bottom steel bars 542 tied perpendicularly to the lower chord bars 523 are laid in a direction parallel to the lower chord bars 523. The lower chord bars 523, the slab bottom connecting steel bars 541 and the slab bottom steel bars 542 together constitute the floor bottom reinforcement of the floor. Similarly, the upper chords 521 of the steel trusses 52 on both sides of the precast secondary beam 4 are connected into one by the slab surface connecting steel bars 543, and the slab surface steel bars 544 are laid in a direction parallel to the upper chords 521 and perpendicularly tied to the upper chords 521. The upper chords 521, the slab surface connecting steel bars 543 and the slab surface steel bars 544 together constitute the floor surface reinforcement of the floor slab. After the pre-embedded reinforcement 54 is tied, the fiber concrete is poured to form a post-casting superposition layer 53, and the reinforcement of the precast frame beam 2 and the precast secondary beam 4 is buried in the post-casting superposition layer 53. The fiber concrete floor slab 5, the precast frame beam 2 and the precast secondary beam 4 are connected as a whole to ensure the bonding strength between the beam and the slab.

[0034] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes in form and details of the present invention are within the scope of protection of the present invention without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A fiber concrete composite slab without support and formwork reinforced concrete frame structure, characterized in that: include: A number of distributed large steel formwork cast-in-place frame columns with corbels (1); A plurality of prefabricated frame beams (2), wherein a prefabricated frame beam (2) is provided between each adjacent two of the large steel formwork with corbel cast-in-place frame columns (1), and both ends of the prefabricated frame beam (2) are respectively placed on the corbels (11) of the corresponding large steel formwork with corbel cast-in-place frame columns (1), and overlapped with the large steel formwork with corbel cast-in-place frame columns (1) to form a beam-column node (3); At least one prefabricated secondary beam (4) placed on the two prefabricated frame beams (2) arranged opposite to each other; The fiber concrete floor slab (5) is laid on the prefabricated frame beams (2) and the prefabricated secondary beams (4).

2. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 1 is characterized in that: The large steel formwork with corbel cast-in-place frame column (1) comprises: Steel mould; The cast-in-place frame column with corbels is cast in the steel formwork, and the cast-in-place frame column with corbels is provided with column reinforcements preset in the steel formwork and corbel reinforcements connected to the column reinforcements.

3. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 1 is characterized in that: The fiber concrete floor slab (5) comprises: A plurality of prefabricated bottom plates (51) are sequentially laid on the prefabricated frame beam (2) and the prefabricated secondary beam (4) along the length direction of the prefabricated secondary beam (4), and the prefabricated bottom plates (51) are provided with steel bar trusses (52) perpendicular to the prefabricated secondary beam (4); The post-cast superimposed layer (53) is cast on the prefabricated bottom plate (51), the prefabricated frame beam (2) and the prefabricated secondary beam (4), and the post-cast superimposed layer (53) is pre-embedded with pre-embedded reinforcement (54) which is tied and connected with the steel truss (52).

4. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 3 is characterized in that: The reinforcement of the prefabricated frame beam (2) and the prefabricated secondary beam (4) extends upward and is buried in the post-cast superimposed layer (53).

5. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 4 is characterized in that: The steel bar truss (52) comprises: an upper chord (521), two web steel bars (522) and two lower chords (523), the bottoms of the two web steel bars (522) being pre-buried in the prefabricated bottom plate (51), the upper chord (521) being connected to the tops of the two web steel bars (522), and the bottom of each web steel bar (522) being connected to a lower chord (523) located above the prefabricated bottom plate (51).

6. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 5 is characterized in that: The embedded reinforcement (54) comprises: A plurality of slab bottom connecting steel bars (541), wherein the lower chord bars (523) of the steel trusses (52) on both sides of the prefabricated secondary beam (4) are connected via the slab bottom connecting steel bars (541); A plurality of slab bottom reinforcement bars (542) are laid in a direction parallel to the lower chord reinforcement bars (523), and the slab bottom reinforcement bars (542) are vertically tied to the lower chord reinforcement bars (523) to form floor slab bottom reinforcements; A plurality of plate surface connecting steel bars (543), wherein the upper chord bars (521) of the steel bar trusses (52) on both sides of the prefabricated secondary beam (4) are connected via the plate surface connecting steel bars (543); A plurality of slab surface reinforcements (544) are laid in a direction parallel to the upper chord reinforcements (521), and the slab surface reinforcements (544) are vertically tied to the upper chord reinforcements (521) to form floor slab surface reinforcements.

7. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 1 is characterized in that: The prefabricated frame beam (2) is a pre-tensioned partially prestressed concrete frame beam; and the prefabricated secondary beam (4) is a pre-tensioned partially prestressed concrete secondary beam.

8. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 1 is characterized in that: It also includes a plurality of grouting corrugated pipes pre-buried in the foundation, and the longitudinal steel bars of the large steel formwork with corrugated bracket cast-in-place frame column (1) are inserted into the grouting corrugated pipes.

9. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 1 is characterized in that: It also includes a cushion block (6) arranged on the corbel (11) of the large steel formwork corbel cast-in-place frame column (1), and the prefabricated frame beam (2) is placed on the cushion block (6).

10. The fiber concrete composite slab support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: Both ends of the prefabricated secondary beam (4) are provided with resting lugs (41), and the prefabricated frame beam (2) is provided with corresponding resting notches (21) for resting the resting lugs (41).

Images