CN206784727U - A kind of wide coupling beam of assembled groove structure of the built-in corrugated steel plate of span centre - Google Patents

Abstract

The utility model discloses an assembled groove structure wide connecting beam with built-in corrugated steel plates in the middle of the span, which belongs to the technical field of assembled concrete structures. It is composed of coupling beam longitudinal reinforcement, coupling beam stirrup, coupling beam concrete, corrugated steel plate, profiled steel plate, profiled steel plate connecting rod, and pegs. The utility model arranges profiled steel plates with studs at both ends of the assembled concrete prefabricated coupling beam as the inner template, so that the two ends of the prefabricated coupling beam form a "groove structure", and then surround the beam nest and the "groove" The partial cast-in-place forms a more convenient and easy-to-construct disassembly and assembly system at the beam end, which can reduce the amount of formwork work on site and reduce the difficulty of construction. The studs arranged on the profiled steel plate can ensure that the profiled steel plate and the concrete work together. The strong connection between the coupling beam and the shear wall panel is realized through the profiled steel plate and its connectors. Reduce the height-span ratio while reducing the stiffness, further improving the structural integrity and energy dissipation capacity.

Description

A prefabricated grooved structure wide coupling beam with built-in corrugated steel plate in the mid-span

technical field

The utility model belongs to the technical field of prefabricated concrete structures, in particular to a prefabricated groove structure wide coupling beam concrete structure with built-in corrugated steel plates in the mid-span.

Background technique

The coupling beam is an important component in the building structure. The shear wall connects the wall piers together through the coupling beam to make them deform in a coordinated manner and form an overall lateral force-resistant structure. In the prefabricated concrete shear wall structure, since the coupling beam is mainly constructed by the all-in-situ construction method, or the method of lapping the fully prefabricated coupling beam on the reserved beam socket of the shear wall and then casting in-situ When the all-cast-in-place construction method is adopted, the concrete wet work on site will be very large; the formwork support and formwork removal workload will be large during the construction of multi-connected beam or wide-connected beam structure, and the construction quality is not easy to guarantee, and the construction period is long , which is not conducive to energy saving and emission reduction; when adopting the method of lapping the fully prefabricated coupling beams on the reserved beam sockets of the shear wall and then casting in-situ, the shear wall itself has a smaller cross-section and more steel bars , when the coupling beam is installed, it is easy to cause collisions between the coupling beam and the steel bars in the reserved beam socket of the shear wall at the connection position. Due to the existence of construction joints may affect the transfer of loads by the structure.

In order to solve the problem of insufficient shear-compression ratio of coupling beams in the design of shear wall structures, scholars at home and abroad have proposed multiple coupling beams and wide coupling beams for shear wall structures. Studies have shown that multiple connecting beams and wide connecting beams can effectively increase the shear area to span-height ratio of connecting beams, and significantly improve the seismic performance of structures.

Utility model content

The purpose of this utility model is to propose an assembled groove structure wide connecting beam concrete structure with built-in corrugated steel plates in the middle of the span in view of the problems existing in the prior art. Ensure the strong connection between the coupling beam and the shear wall panel; increase the width of the coupling beam and arrange the corrugated steel plate to meet the structural requirements and facilitate installation while effectively increasing the shear area of the coupling beam to give full play to the shear resistance and energy consumption of the corrugated steel plate It can solve the problems of insufficient shear bearing capacity and poor ductility of coupling beams, reduce the amount of formwork work on site, and facilitate the construction of single and multiple coupling beam structures.

Technical scheme of the utility model:

A prefabricated groove structure wide coupling beam with corrugated steel plates built in the middle of the span, the wide coupling beam and the shear wall form a prefabricated concrete shear wall structure; both ends of the wide coupling beam have profiled steel plates, A corrugated steel plate is welded between two profiled steel plates;

Longitudinal ribs are provided on the outer walls of the two profiled steel plates;

A plurality of stirrups are sheathed on the outer side of the longitudinal reinforcement corresponding to the corrugated steel plate segment.

The profiled steel plate has a U-shaped structure, and multiple grooves are provided on the side wall of the U-shaped structure; multiple pegs are also arranged on both sides of the groove, and the pegs are positioned and connected to the longitudinal ribs.

The groove on the profiled steel plate is clamped and connected with the beam socket on the shear wall body, and is fixed by pouring concrete.

A connecting rod is welded between the grooves on the two side walls of the profiled steel plate.

Effect of the present utility model:

Compared with the prior art, the utility model changes the beam end connection form of the prefabricated concrete coupling beam, so that a new type of reasonable disassembly and assembly is formed between the shear wall panel and the coupling beam of the fabricated concrete structure. System: The built-in profiled steel plates at both ends of the prefabricated connecting beams form an effective hoop for the concealed columns at the edge of the prefabricated shear wall panels, and the studs on the outside of the profiled steel plates can ensure that the cast-in-place concrete and prefabricated components work together. The overall force transmission of the system is clear, the split position is reasonable, and the on-site installation and operation are simple. The "groove structure" at both ends of the prefabricated connecting beam is used to replace the traditional formwork, reducing the amount of on-site formwork; increasing the width of the connecting beam is convenient for installation and construction, improving the connection The problem of insufficient beam shear-compression ratio makes the structure have better seismic energy dissipation capacity. The corrugated steel plate arranged at the mid-span of the prefabricated coupling beam can improve the shear bearing capacity of the coupling beam, and improve the energy dissipation capacity and ultimate deformation capacity of the prefabricated components.

Description of drawings

Fig. 1 is a three-dimensional view of the utility model.

Fig. 2 is a top view of the utility model.

Fig. 3 is a schematic diagram of the structure of the wide coupling beam of the present invention.

Fig. 4 is a schematic diagram of internal reinforcement of the shear wall panel of the present invention.

Fig. 5 is a schematic diagram of the specific implementation 1 of the present utility model.

Fig. 6 is a schematic diagram of a specific implementation 2 of the present invention.

detailed description

In order to further explain the technical solution of the present utility model, the present invention will be described in detail below in conjunction with accompanying drawings 1-6 and embodiments.

A prefabricated groove structure wide coupling beam with built-in corrugated steel plates in the middle of the span, the wide coupling beam and the shear wall form a prefabricated concrete shear wall structure; both ends of the wide coupling beam have profiled steel plates 1 , a corrugated steel plate 2 is welded between two profiled steel plates 1;

Longitudinal ribs 5 are provided on the outer walls of the two profiled steel plates 1;

A plurality of stirrups 6 are provided on the outer side of the longitudinal rib 5 corresponding to the corrugated steel plate 2 sections.

The profiled steel plate 1 is a U-shaped structure, and a plurality of grooves are arranged on the side wall of the U-shaped structure; a plurality of pegs 3 are also arranged, and a plurality of pegs 3 are arranged on both sides of the groove, and the pegs 3 and the longitudinal ribs 5 positioning connection.

The groove on the profiled steel plate 1 is clamped and connected with the beam socket on the shear wall body, and is fixed by pouring concrete.

A connecting rod 4 is welded between the grooves on the two side walls of the profiled steel plate 1 .

The wall of the shear wall is provided with hidden edge columns 10, vertical bars 9 and horizontal stirrups 8;

The groove of the profiled steel plate 1 of the wide connecting beam is set on the edge hidden column 10, the vertical rib 9 and the horizontal stirrup 8;

Then concrete 11 is poured into the wide connecting beam to realize the integral structure connected with the shear wall body.

Example

A prefabricated groove structure wide coupling beam concrete structure with built-in corrugated steel plates in the middle of the span, including prefabricated shear wall panels and prefabricated wide coupling beams. Among them, in addition to concrete, the prefabricated wide coupling beam also includes 5 coupling beam longitudinal bars, 6 coupling beam stirrups, 1 profiled steel plate, 4 profiled steel plate connecting rods, 3 pegs, and 2 corrugated steel plates.

The length of the profiled steel plate should not be less than the minimum anchorage length of the stressed longitudinal reinforcement of the wide coupling beam. According to the thickness of the shear wall (spacing of structural steel bars), determine the spacing of the double-layer laminated steel plates, which should be greater than the distance between the structural bars of the shear wall plate. Weld studs according to construction requirements. The hoop effect formed by the profiled steel plate on the hidden column at the edge of the shear wall panel can effectively ensure the transmission of horizontal force. The U-shaped steel plate at both ends of the corrugated steel plate is firmly welded to the double-layer laminated steel plate to ensure that the corrugated steel plate fully exerts its energy dissipation effect under the load. The width of the corrugated steel plate shall not affect the binding of the stirrups. When the coupling beam is prefabricated, concrete is not poured in the closed space formed between the double-layer pressed steel plates and the outer formwork of the wide coupling beam member.

1. When it is used in the prefabricated concrete shear wall structure of single connecting beam, place the prefabricated wide connecting beam from top to bottom and place it at the beam nest, and the vertical reinforcement 9 of the shear wall panel at the beam nest should pass through the " Groove structure", work together with post-cast concrete, profiled steel plate 1 and its connecting rod 4, and meet the anchorage length during the construction of the upper layer. After the wide coupling beam is installed, the prefabricated floor can be installed directly, and the floor will be poured together after the floor is installed in place, saving the workload of the formwork and avoiding the waste caused by separate pouring and maintenance of the coupling beam and the floor.

2. When it is used in the prefabricated concrete shear wall structure with multiple connecting beams, the prefabricated wide connecting beam A and wide connecting beam B are placed in the beam nest from top to bottom in sequence, and the shear wall panel structure at the beam nest is vertical The straight reinforcement 9 should pass through the "groove structure", work together with the post-cast concrete, the profiled steel plate 1 and its connecting rod 4, and meet the anchorage length during the construction of the upper layer. After the wide coupling beams are installed, the prefabricated floor can be installed directly. After the floor is installed in place, it will be poured together, which saves the workload of the formwork, avoids the waste caused by the separate pouring and maintenance of the coupling beam and the floor, and avoids the traditional multi-connection The construction and maintenance period of beam cast-in-place is long, and the formwork between beams is difficult to remove.

Claims (5)

1. a kind of wide coupling beam of assembled groove structure of the built-in corrugated steel plate of span centre, the wide coupling beam fills with shear wall body composition With formula concrete shear wall structure；It is characterized in that：

The both ends of the wide coupling beam have profiled sheet, and corrugated steel is welded between two profiled sheets；

Vertical muscle is provided with the outer wall of two profiled sheets；

Corrugated steel section, which is corresponded to, on the outside of vertical muscle is arranged with multiple stirrups.

2. according to the wide coupling beam described in claim 1, it is characterised in that

Profiled sheet is U-shaped structure, and multiple grooves are provided with U-shaped structure side wall；It is additionally provided with multiple pegs, multiple peg arrangements In groove both sides, peg is located by connecting with vertical muscle.

3. according to the wide coupling beam described in claim 1, it is characterised in that

Profiled sheet upper groove is fixed with the hitch on shear wall body and connected, and is fixed with concreting.

4. according to the wide coupling beam described in claim 1, it is characterised in that

Connecting rod is welded between groove on profiled sheet two side.

5. according to the wide coupling beam described in claim 1, it is characterised in that

Edge sleeper, vertical bar and horizontal hoop are provided with shear wall body；

The groove of the profiled sheet of wide coupling beam is set on edge sleeper, vertical bar and horizontal hoop；

Then by concreting to wide coupling beam, realize and connect as one structure with shear wall body.