CN110359612A - A kind of novel two-way ribs profiled steel sheet combination floor of assembled - Google Patents

Abstract

The invention discloses a kind of novel two-way ribs profiled steel sheet combination floors of assembled, the composite floor includes precast rib bottom plate and cast-in-place concrete layer (5), the precast rib bottom plate includes two-way ribs profiled sheet (1) and bottom layer of the reinforcing steel mesh sheet (2), the template that two-way ribs profiled sheet is poured as precast rib underplate concrete, it which is provided with profiled sheet preformed hole (7) and bolt collar (4), bottom layer of the reinforcing steel mesh sheet is layed in two-way ribs profiled sheet rib slot；The cast-in-place concrete layer is located at precast rib substrate, and top bars mesh sheet (3) are equipped in cast-in-place concrete layer.The present invention innovates two-way ribs profiled sheet as the template for pouring precast rib underplate concrete, and bottom layer of the reinforcing steel mesh sheet is arranged by bidirectional stress, reduces slab thickness, saves concrete amount；Using precast rib bottom plate as top concrete-pouring template, a large amount of durations can be saved, make convenient and quick construction.

Description

A new type of prefabricated two-way dense rib profiled steel plate composite floor

technical field

The invention relates to a floor slab, in particular to a prefabricated dense rib composite floor slab which adopts two-way dense rib profiled steel plates and does not require beam-plate mould construction.

Background technique

In recent years, my country has vigorously promoted the industrialization of construction, and promoted prefabricated buildings to rationally utilize and save construction resources. The advantages of steel structure, such as light weight, easy realization of standardized design, and industrialized production of components, make it a natural advantage in the development of prefabricated buildings. As one of the important components and indicators of prefabricated steel structure buildings, the application and research of prefabricated floor slabs have important significance and effects on the promotion and application of prefabricated steel structure buildings. At present, there are three types of floor slabs widely used in prefabricated steel structure houses: profiled steel plate concrete composite floor, reinforced truss concrete composite floor and reinforced truss floor deck. Among them, the profiled steel plate composite floor has a large thickness of the structural layer, which affects the clear height of the building; the pipelines perpendicular to the slab rib are laid on the upper part of the slab rib, which affects the construction space of the upper reinforcement, resulting in complex construction and many other problems; the reinforced truss concrete composite floor has many problems. The disadvantages of large self-weight and easy to break during transportation; steel truss floor deck has the disadvantages of large self-weight and large amount of concrete. The three types of prefabricated floor slabs all have problems such as large amount of concrete wet work on site and low degree of pipeline integration in practical application.

SUMMARY OF THE INVENTION

Technical problem: In view of the problems existing in the above-mentioned existing prefabricated floor slabs, the present invention provides a new prefabricated two-way dense rib profiled steel plate composite floor slab and a construction method, which is safe and reliable, can realize prefabricated construction and is easy to standardize production.

Technical scheme: The prefabricated new double-rib profiled steel plate composite floor of the present invention includes a prefabricated dense-rib bottom plate and a cast-in-place concrete layer. The rib profiled steel plate is used as the template for concrete pouring of the prefabricated dense rib bottom plate, and there are reserved holes for the profiled steel plate and bolt sleeves on it, and the bottom reinforcement mesh is laid in the rib groove of the two-way dense rib profiled steel plate; The concrete layer is located on the prefabricated dense rib bottom plate, and the upper layer of steel mesh is laid in the cast-in-place concrete layer.

The prefabricated dense rib bottom plate is prefabricated in the factory, constructed and installed on site, and the prefabricated dense rib floor plate and the upper reinforced mesh sheet are assembled with cast-in-place concrete to form a dense rib floor plate.

The cast-in-place concrete layer is poured with prefabricated dense rib floor as a formwork.

The two-way rib profiled steel plates are connected in units to form a concrete pouring formwork for a prefabricated ribbed bottom plate, and a reserved hole for the profiled steel plate is reserved at the intersection of the longitudinal and transverse ribs, and the bolt sleeves are pre-buried as the support point of the ceiling keel in the later stage.

The reinforcing bars of the bottom reinforced mesh are arranged in a well-shaped shape according to two-way stress, and are laid in the rib grooves of the two-way dense rib pressed steel plate.

Beneficial effects: Compared with the existing prefabricated floor slabs, the invention has the characteristics of safety and reliability, low consumption of cast-in-place concrete, assembly construction and easy standardized production.

Description of drawings

Fig. 1 is the structural schematic diagram of the bidirectional dense rib profiled steel plate involved in the present invention;

Fig. 2 is the structural schematic diagram of the prefabricated dense rib bottom plate involved in the present invention;

Fig. 3 is the structural schematic diagram of the two-way dense rib profiled steel plate composite floor involved in the present invention;

Fig. 4 is A-A sectional view in Fig. 3;

Fig. 5 is B-B sectional view in Fig. 3;

Fig. 6 is C-C sectional view in Fig. 3;

Fig. 7 is D-D sectional view in Fig. 3;

8 is a schematic diagram of the structure of the double-way dense rib profiled steel plate composite floor ceiling structure involved in the present invention;

Figure 9 is a schematic diagram of the structure of the double-sided dense rib profiled steel plate composite floor ceiling structure involved in the present invention;

FIG. 10 is a schematic diagram of the connection nodes of the bidirectional dense rib profiled steel plate composite floor according to the present invention.

In the picture: two-way dense rib profiled steel plate 1, bottom reinforcement mesh sheet 2, upper reinforcement mesh sheet 3, bolt sleeve 4, cast-in-place concrete layer 5, precast concrete rib 6, profiled steel plate reserved hole 7, stud 8. T-bolt 9, gypsum board ceiling material 10, main beam 11.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 3 , the present invention includes a prefabricated rib base plate and a cast-in-place concrete layer, including a prefabricated rib base plate and a cast-in-place concrete layer, and the prefabricated rib base plate includes a two-way rib profiled steel plate 1 and a bottom layer. Reinforced mesh 2, two-way dense rib profiled steel plate 1 is used as a template for concrete pouring of the prefabricated dense rib bottom plate, and there are reserved holes 7 for profiled steel plates and bolt sleeves 4, and the bottom reinforcement mesh 2 is laid on the two-way dense rib. In the rib groove of the profiled steel plate 1; the upper-layer steel mesh sheet 3 is laid in the cast-in-place concrete layer.

Further, the prefabricated rib bottom plate, including the two-way rib profiled steel plate 1, the bolt sleeve 4 and the bottom reinforcing mesh sheet (2), are all prefabricated in the factory, and the prefabricated rib bottom plate and the upper layer are made of cast-in-place concrete during on-site construction and installation. The steel mesh 3 is assembled to form a dense ribbed floor.

Further, the cast-in-place concrete layer is poured concrete with a prefabricated ribbed bottom plate as a formwork.

Further, the two-way dense rib profiled steel plate is connected in units of 1 to form a concrete pouring formwork of a prefabricated dense rib bottom plate, and a reserved hole 7 for the profiled steel plate is reserved at the intersection of the longitudinal and transverse ribs, and the embedded bolt sleeve 4 is used as a later suspended ceiling. Bearing points for the keel.

Further, the reinforcing bars of the bottom reinforcing mesh sheet 2 are arranged in a two-way shape in a well-shaped force, and are laid in the rib grooves of the two-way dense rib profiled steel plate 1 .

Further, the reserved hole for the reserved profiled steel plate is circular.

As shown in Figure 4 to Figure 7, the construction steps of the new prefabricated two-way dense rib profiled steel plate composite floor are: (1) the bolt sleeve 4, the two-way dense rib profiled steel plate 1, the bottom reinforcement mesh 2 and the upper reinforcement Parts such as mesh 3 are prefabricated separately or as a whole in the factory; (2) The bolt sleeve 4 is pre-embedded in the factory, and the bottom reinforcement mesh 2 is laid in the rib groove of the two-way dense rib profiled steel plate 1 to prevent Two-way dense rib profiled steel plate 1 is poured with concrete as a formwork to form a prefabricated dense rib floor; (3) the formed and maintained parts are delivered to the construction site, and temporary supports are arranged; (4) the prefabricated dense rib floor is designed according to the requirements. Install it on the main beam or column; (4) Lay the upper layer of steel mesh 3 on the prefabricated dense rib floor and pour concrete to connect the prefabricated dense rib floor to an integral dense rib floor; (5) After the concrete is cured to the strength, remove the bottom temporary After the support, the whole floor slab is supported on the main beam 11 or the column.

As shown in Figure 8, when the prefabricated rib bottom plate is installed on the main beam 11 according to the design requirements in the construction method of the new type of two-way dense rib profiled steel plate composite floor construction method, welding is performed at the lap joint position on the adjacent floor beam pegs 8.

As shown in Figure 9 and Figure 10, the prefabricated new two-way rib profiled steel plate composite floor is installed with embedded bolt sleeves 4 and T-bolts 9 to install the ceiling gypsum board 10 for ceiling construction, and the two-way rib profiled steel plate 1 A pipeline is laid between the ceiling gypsum board 10 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (5)

1. an assembled new type two-way dense rib profiled steel plate composite floor, it is characterized in that, this composite floor plate comprises prefabricated dense rib bottom plate and cast-in-place concrete layer (5), and described prefabricated dense rib bottom plate comprises two-way dense rib pressure type The steel plate (1), the bottom reinforcement mesh (2), and the two-way dense rib profiled steel plate (1) are used as the formwork for concrete pouring of the prefabricated dense rib bottom plate, and there are reserved holes (7) for the profiled steel plate and bolt sleeves ( 4), the bottom reinforcement mesh sheet (2) is laid in the rib groove of the two-way dense rib profiled steel plate (1); the cast-in-place concrete layer (5) is located on the prefabricated dense-rib bottom plate, and the cast-in-place concrete layer (5) An upper-layer steel mesh sheet (3) is laid. 2. A kind of prefabricated new type two-way dense rib profiled steel plate composite floor according to claim 1, is characterized in that, described prefabricated dense rib bottom plate is prefabricated in factory, constructed and installed on site, and cast-in-place concrete is used to make prefabricated dense rib. The ribbed floor is assembled with the upper-layer steel mesh sheet (3) to form a densely ribbed floor. 3. A kind of prefabricated new type two-way ribbed profiled steel plate composite floor according to claim 1, characterized in that, the cast-in-place concrete layer (5) uses a prefabricated rib bottom plate as a formwork to cast concrete. 4. A kind of prefabricated novel bidirectional rib profiled steel plate composite floor according to claim 2, characterized in that, the bidirectional rib profiled steel plate (1) is connected in units to form a concrete pouring formwork of a prefabricated rib bottom plate , and at the intersection of longitudinal and transverse ribs, reserved holes (7) for profiled steel plates and pre-embedded bolt sleeves (4) are reserved as the support points of the ceiling keel in the later stage. 5. A kind of prefabricated new type two-way dense rib profiled steel plate composite floor according to claim 2, characterized in that, the reinforcing bars of the bottom reinforcement mesh (2) are arranged in a well-shaped shape according to the two-way stress, and are laid on the two-way Inside the rib groove of the dense rib profiled steel plate (1).