I-shaped steel and concrete composite floor slab structure

Abstract

The utility model discloses an I-shaped steel-concrete composite floor slab structure which comprises a lower-layer prefabricated slab, a top plate rib, a bottom plate rib, a plurality of I-shaped steel, a plurality of cushion blocks and an upper-layer cast-in-place slab, and the bottom plate rib is located in the lower-layer prefabricated slab; the bottom plate ribs comprise a plurality of transverse bottom ribs and a plurality of longitudinal bottom ribs, the I-shaped steel is horizontally and longitudinally arranged on the transverse bottom ribs, the longitudinal bottom ribs are fixedly connected with the transverse bottom ribs, and the I-shaped steel and the longitudinal bottom ribs are arranged at intervals; the cushion blocks are arranged at the bottom ends of the I-beams, the I-beams and the lower-layer prefabricated slab are locked and fixed through bolts, the top plate ribs abut against the I-beams, one side of each top plate rib is embedded in the wall body, the upper-layer cast-in-place slab is cast in place on the lower-layer prefabricated slab, and the top plate ribs and the I-beams are located in the upper-layer cast-in-place slab. The utility model has the advantages that the relative position between each I-beam and the lower-layer precast slab is stable, the deflection of the I-beams in the floor is smaller, the force transmission is safe and reliable, and the construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of composite floor slab technology, and in particular to an I-beam composite floor slab structure. Background Technology

[0002] Compared to traditional cast-in-place construction, prefabricated construction offers advantages such as energy conservation, environmental protection, and labor savings. Among the various prefabricated components, the selection of floor slabs is crucial. Traditional prefabricated floor slabs include profiled steel sheets and steel truss slabs, with composite floor slabs accounting for a significant proportion. However, in some buildings, functional limitations prevent the installation of floor beams, and the required slab thickness limits the clear height, resulting in a large calculated span for the structural floor slabs. Because the lower composite floor slabs are relatively thin, safety during construction and subsequent normal use cannot be guaranteed.

[0003] To ensure structural safety and meet functional requirements, a certain number and size of I-beams are arranged on the lower composite floor slab using finite element analysis, creating a hybrid structure. However, the existing arrangement of several I-beams on the lower composite floor slab results in poor fixation between the I-beams and the lower precast slab. Under normal operating conditions, the I-beams exhibit significant deflection, posing a safety hazard in the internal force transmission of the floor slab. Improvements are needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to propose an I-beam composite floor structure with a stable relative position between the I-beam and the lower precast slab, small deflection of the I-beam within the floor slab, safe and reliable force transmission, and convenient construction.

[0005] This utility model proposes an I-beam composite floor slab structure, including a lower precast slab, top reinforcement, bottom reinforcement, several I-beams, several spacers, and an upper cast-in-place slab. The bottom reinforcement is located within the lower precast slab. The bottom reinforcement includes several transverse bottom reinforcements and several longitudinal bottom reinforcements. Several I-beams are horizontally and longitudinally arranged on the transverse bottom reinforcements, and several longitudinal bottom reinforcements are connected and fixed to the transverse bottom reinforcements. The I-beams and longitudinal bottom reinforcements are spaced apart. Several spacers are arranged at the bottom ends of the I-beams. The I-beams are fixed to the lower precast slab with bolts. The top reinforcement abuts against each I-beam, and one side of the top reinforcement is embedded in the wall. The upper cast-in-place slab is cast onto the lower precast slab, and the top reinforcement and several I-beams are located within the upper cast-in-place slab.

[0006] Preferably, a plurality of the longitudinal bottom ribs are disposed on the upper surface of the transverse bottom ribs and are fixed to the transverse bottom ribs by binding with wire.

[0007] Preferably, several of the I-beams are evenly distributed along the length of the transverse bottom reinforcement, and three longitudinal bottom reinforcements are provided between two adjacent I-beams, with the longitudinal bottom reinforcements being evenly distributed between two adjacent I-beams.

[0008] Preferably, the bolts used to fasten each of the I-beams to the lower precast slab are arranged in two rows, with several bolts in the same row evenly distributed along the length of the I-beam.

[0009] Preferably, the pad is embedded between two rows of bolts, and both sides of the pad abut against the bolts.

[0010] Preferably, the surface of the pad has a receiving groove, and the transverse bottom rib can be embedded in the receiving groove.

[0011] Preferably, the top slab reinforcement includes several transverse ribs and several longitudinal ribs. The transverse ribs are horizontally arranged above the I-beam and evenly distributed along the length of the I-beam. The longitudinal ribs are horizontally arranged at the bottom of the transverse ribs and are tied and fixed to the transverse ribs with wire.

[0012] Preferably, one end of the transverse rib is embedded in the wall and bent downwards.

[0013] As can be seen from the above description of this utility model, this utility model has the following beneficial effects:

[0014] 1. Several I-beams are set on the lower precast slab. Pads are placed inside the lower precast slab to support the I-beams. Each I-beam is fixed to the lower precast slab with bolts, so that each I-beam and the lower precast slab maintain a stable position. This makes the deflection of the I-beams smaller under normal use conditions, and solves the safety hazard of force transmission inside the floor slab.

[0015] 2. In the bottom slab reinforcement, several longitudinal bottom reinforcement bars are set on the upper surface of the transverse bottom reinforcement bars and are tied and fixed with the transverse bottom reinforcement bars with iron wire. The transverse bottom reinforcement bars are supported by spacers, and the longitudinal bottom reinforcement bars are supported by the transverse bottom reinforcement bars, thereby improving the stability of the bottom slab reinforcement bars in the lower precast slab.

[0016] 3. Two rows of bolts are set to fix each I-beam to the lower precast slab, and spacers are embedded between the two rows of bolts so that both sides of the spacers abut against the bolts; in addition, a receiving groove is formed on the surface of the spacer so that the transverse bottom reinforcement is embedded in the receiving groove on the surface of the spacer, thereby keeping the spacer at the bottom of the I-beam stable. Attached Figure Description

[0017] Figure 1 This is an installation plan view of an I-beam composite floor slab structure after casting, according to an embodiment.

[0018] Figure 2 This is an example. Figure 1 Sectional view at CC;

[0019] Figure 3 This is a cross-sectional view of an I-beam composite floor slab structure according to an embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of the pad and the receiving groove in the embodiment;

[0021] Figure 5 This is an installation plan view of an I-beam composite floor slab structure before it is poured, according to an embodiment.

[0022] Figure 6 This is an example. Figure 5 A magnified view of a portion of point A in the middle.

[0023] Attached reference numerals: 1. Lower precast slab; 2. Bottom reinforcement; 21. Transverse bottom reinforcement; 22. Longitudinal bottom reinforcement; 3. Top reinforcement; 31. Transverse top reinforcement; 32. Longitudinal top reinforcement; 4. I-beam; 5. Spacer block; 51. Receiving groove; 6. Bolt; 7. Wall; 8. I-beam composite floor structure; 9. Upper cast-in-place slab. Detailed Implementation

[0024] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer and more understandable, the following description is provided in conjunction with the appendix. Figure 1-6 The present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0025] Reference Figure 1 , Figure 2 and Figure 3 A composite floor slab structure with I-beams includes a lower precast slab 1, bottom reinforcement 2, top reinforcement 3, several I-beams 4, several pads 5, and an upper cast-in-place slab 9. The bottom reinforcement 2 includes several transverse bottom reinforcements 21 and several longitudinal bottom reinforcements 22. The transverse bottom reinforcements 21 are arranged in parallel, with the spacing between adjacent transverse bottom reinforcements 21 being the same. The longitudinal bottom reinforcements 22 are placed on the transverse bottom reinforcements 21 and kept perpendicular to the transverse bottom reinforcements 21. The longitudinal bottom reinforcements 22 and the transverse bottom reinforcements 21 are tied and fixed together with wire.

[0026] Reference Figure 4 , Figure 5 and Figure 6Several spacers 5 are placed on the building formwork, arranged horizontally in several groups. Each spacer 5 has a receiving groove 51 on its top surface. Bottom reinforcement 2 is placed above the spacers 5, with each horizontal bottom reinforcement 21 embedded in the receiving groove 51 on the surface of the spacer 5, and the upper surface of each horizontal bottom reinforcement 21 flush with the upper surface of the spacer 5. Several I-beams 4 are placed horizontally and longitudinally on each spacer 5, and each I-beam 4 is secured to the building formwork with bolts 6. The bolts 6 securing each I-beam 4 are arranged in two rows to ensure the I-beams 4 remain stable on each spacer 5. The spacers 5 on the building formwork are placed between the two rows of bolts 6, with both sides of the spacers 5 abutting against the two rows of bolts 6, further ensuring the spacers 5 remain stable on the building formwork and preventing them from tipping over.

[0027] Reference Figure 2 and Figure 3 After several I-beams 4 are placed on the pads 5, the I-beams 4 are evenly distributed along the length of the transverse bottom reinforcement 21. The bottom surfaces of the I-beams 4 are flush with the bottom surfaces of the longitudinal bottom reinforcement 22, and each I-beam 4 and each longitudinal bottom reinforcement 22 are parallel to each other. The longitudinal bottom reinforcement 22 set on the transverse bottom reinforcement 21 is spaced apart from the I-beams 4, so that three longitudinal bottom reinforcement 22 are formed between two adjacent I-beams 4, and the three longitudinal bottom reinforcement 22 are evenly distributed between two adjacent I-beams 4. Finally, concrete can be poured on the building formwork to form the lower precast slab 1. The formed lower precast slab 1 completely covers the transverse bottom reinforcement 21, the longitudinal bottom reinforcement 22, the pads 5, and the bolts 6, and covers the bottom part of the I-beams 4. Several pads 5 are set at the bottom of the I-beams 4 to support the I-beams 4, so that each I-beam 4 abuts against the transverse bottom reinforcement 21, thus providing a good supporting effect for the I-beams 4. After the lower precast slab 1 is formed by pouring concrete, each I-beam 4 is fixed by double-row bolts 6, which makes the I-beam 4 more stable in the lower precast slab 1, thereby reducing the deflection of the composite floor slab under normal use conditions.

[0028] The top ribs 3 are positioned above each I-beam 4. The top ribs 3 include several transverse ribs 31 and several longitudinal ribs 32. The transverse ribs 31 are horizontally and horizontally fixed to the I-beam 4, ensuring they are evenly distributed along the length of the I-beam 4. The longitudinal ribs 32 are positioned at the bottom of the transverse ribs 31, and are secured to the transverse ribs 31 with wire. Three longitudinal ribs 32 are positioned between two adjacent I-beams 4, evenly distributed between them, so that the longitudinal ribs 32 correspond to the bottom longitudinal ribs 22.

[0029] The transverse bottom reinforcement 21 extends from one end of the lower precast slab 1, and similarly, one end of the transverse top reinforcement 31 extends out, with the direction of the transverse top reinforcement 31 being the same as that of the transverse bottom reinforcement 21. During the installation of this I-beam composite floor slab structure 8, the extended transverse top reinforcement 31 and transverse bottom reinforcement 21 are inserted into the wall 7, and one end of the transverse top reinforcement 31 is bent downwards, thereby making the I-beam composite floor slab structure 8 more stable after construction. Finally, the upper cast-in-place slab 9 is formed by pouring concrete on the lower precast slab 1, so that the upper cast-in-place slab 9 completely covers the I-beam 4, the transverse top reinforcement 31, and the longitudinal top reinforcement 32.

[0030] The specific implementation principle of this application embodiment is as follows: When it is necessary to construct the I-beam composite floor slab structure 8, several rows of pad blocks 5 are placed on the building formwork, and several transverse bottom reinforcement bars 21 are embedded in the receiving grooves 51 of the pad blocks 5, so that the several transverse bottom reinforcement bars 21 are arranged parallel to each other and the spacing between adjacent transverse bottom reinforcement bars 21 is the same. Several I-beams 4 are placed horizontally and longitudinally on the pad blocks 5, with adjacent I-beams 4 being parallel to each other and maintaining the same spacing. Each I-beam 4 is locked and fixed to the building formwork with bolts 6, and the bolts 6 are arranged in two rows. The pad blocks 5 are embedded between the two rows of bolts 6 and abut against the two rows of bolts 6, so that the I-beams 4 are kept in a stable position on the building formwork.

[0031] Several longitudinal bottom reinforcement bars 22 are placed on the transverse bottom reinforcement bars 21, and the longitudinal bottom reinforcement bars 22 and the transverse bottom reinforcement bars 21 are tied and fixed with iron wire, so that three longitudinal bottom reinforcement bars 22 are set between two adjacent H-beams 4, and the three longitudinal bottom reinforcement bars 22 are evenly distributed between the two adjacent H-beams 4. Finally, the lower precast slab 1 can be cast on the building formwork to form a complete layer covering the transverse bottom reinforcement bars 21, longitudinal bottom reinforcement bars 22, spacers 5 and bolts 6, and covering the bottom part of the H-beams 4. In the constructed H-beam composite floor slab structure 8, the relative position between each H-beam and the lower precast slab is stable, the deflection of the H-beams in the floor slab is small, its force transmission is safe and reliable, and construction is convenient.

[0032] Several transverse reinforcing bars 31 are placed on the I-beams 4, and several longitudinal reinforcing bars 32 are set between two adjacent I-beams 4. The longitudinal reinforcing bars 32 are located at the bottom of the transverse reinforcing bars 31 and are tied and fixed to the transverse reinforcing bars 31 with iron wire. The transverse reinforcing bars 31 are extended and bent at one end, and the transverse bottom reinforcing bars 21 are also extended from the lower precast slab 1. During the installation of the I-beam composite floor slab structure 8, the extended transverse reinforcing bars 31 and transverse bottom reinforcing bars 21 are embedded in the wall 7. The I-beam composite floor slab structure 8 is kept in a horizontal state, and finally the upper cast-in-place slab 9 is formed by pouring on the lower precast slab 1.

[0033] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, shall be protected by the present invention.

Claims

1. A composite floor slab structure made of I-beams, characterized in that: It includes a lower precast slab, top slab reinforcement, bottom slab reinforcement, several I-beams, several spacers, and an upper cast-in-place slab, wherein the bottom slab reinforcement is located within the lower precast slab; The bottom slab reinforcement includes several transverse bottom reinforcements and several longitudinal bottom reinforcements. Several I-beams are horizontally and longitudinally arranged on the transverse bottom reinforcements. Several longitudinal bottom reinforcements are connected and fixed to the transverse bottom reinforcements. The I-beams and longitudinal bottom reinforcements are spaced apart. Several pads are set at the bottom of the I-beams. The I-beams are fixed to the lower precast slab with bolts. The top slab reinforcement abuts against each I-beam. One side of the top slab reinforcement is embedded in the wall. The upper cast-in-place slab is cast on the lower precast slab. The top slab reinforcement and several I-beams are located inside the upper cast-in-place slab.

2. The I-beam composite floor slab structure according to claim 1, characterized in that: Several of the longitudinal bottom ribs are set on the upper surface of the transverse bottom ribs and are fixed to the transverse bottom ribs by binding with iron wire.

3. The I-beam composite floor slab structure according to claim 2, characterized in that: Several H-beams are evenly distributed along the length of the transverse bottom reinforcement, and three longitudinal bottom reinforcements are provided between two adjacent H-beams. The longitudinal bottom reinforcements are evenly distributed between two adjacent H-beams.

4. The I-beam composite floor slab structure according to claim 1, characterized in that: The bolts that are fastened between each of the I-beams and the lower precast slab are arranged in two rows, and several bolts in the same row are evenly distributed along the length of the I-beam.

5. The I-beam composite floor slab structure according to claim 4, characterized in that: The pad is embedded between two rows of bolts, and both sides of the pad abut against the bolts.

6. The I-beam composite floor slab structure according to claim 4, characterized in that: The surface of the pad has a receiving groove, and the transverse bottom rib can be embedded in the receiving groove.

7. The I-beam composite floor slab structure according to claim 1, characterized in that: The top slab reinforcement includes several transverse ribs and several longitudinal ribs. The transverse ribs are horizontally arranged above the I-beam and evenly distributed along the length of the I-beam. The longitudinal ribs are horizontally arranged at the bottom of the transverse ribs and are tied and fixed to the transverse ribs with wire.

8. The I-beam composite floor slab structure according to claim 7, characterized in that: One end of the transverse rib is embedded in the wall and bent downwards.

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