CN203905214U - Assembled type blend coupled wall system - Google Patents

Abstract

A prefabricated mixed limb wall system, including wall units connected in the horizontal direction and vertical direction respectively, wherein floor slabs are arranged between the wall units connected in the vertical direction, and floor slabs are arranged between the left and right wall units in the horizontal direction. Connected by energy-dissipating beams, shear studs are fixed on the energy-dissipating beams. The steel columns and steel reinforcement skeletons are respectively fixedly connected, and the steel columns between the upper and lower wall units are butted and fixed and poured inside the floor slab. The utility model adopts a prefabricated combined structure, which is mainly used for shear walls and frame-shear wall systems. Based on the finite element theory, a finite element model is established to perform mechanical analysis on the prefabricated mixed limb wall system to verify the reliability of its structure. It can ensure that the whole system has good energy dissipation capacity and resistance to progressive collapse in areas with high seismic intensity, and can be widely used in the construction of connected limb walls in construction projects.

Description

Prefabricated mixed limb wall system

technical field

The utility model relates to a connected limb wall for construction engineering, in particular to an assembled mixed connected limb wall.

Background technique

The high-rise building structure is an inevitable choice to solve the contradiction between the growing urban population and the gradual shortage of urban land in the process of urbanization in my country, and the connected wall structure system is an indispensable element in the high-rise building structure. According to previous measured data, the attached wall system not only inherits the advantages of simple shear wall engineering, such as low cost and high lateral stiffness, but also reflects the yield energy consumption of the connecting beam under the action of strong earthquakes, and reduces the concentration of a large number of cracks at the bottom of the wall. , to reduce the cost of post-earthquake repairs. However, in the actual application process, due to the functional requirements of the building, it is often difficult for traditional concrete coupling beams to meet the shear resistance requirements of the section, which has caused certain difficulties for designers. During the construction of the project, the on-site construction work is heavy, and a large number of formwork and temporary supports are required, which not only affects the construction progress, but also produces a large amount of construction waste and causes pollution.

Utility model content

The purpose of the utility model is to provide a prefabricated hybrid connected-limb wall and its construction method, to solve the technical problems of heavy on-site operation of the connected-limb wall, a large amount of construction waste generated, and low efficiency; and to improve the seismic performance of the connected-limb wall , The problem of convenient transportation.

In order to achieve the above object, the utility model adopts the following technical solutions:

A prefabricated mixed limb wall system, comprising wall units connected in the horizontal direction and vertical direction respectively, wherein floor slabs are arranged between the wall units connected in the vertical direction, and the wall units include concrete walls, respectively erected The steel columns at both ends inside the concrete wall and the steel skeleton inside the concrete wall; the upper and lower ends of the steel columns are beyond the concrete wall, and the upper ends of the two steel columns in the concrete wall are along the Non-energy-dissipating short beams are respectively connected opposite to each other in the length direction, and the other end of the non-energy-dissipating short beams exceeds the concrete wall; the steel column and the non-energy-dissipating short beams are fixed with shear bolts.

The left and right wall units in the horizontal direction are connected by energy-dissipating beams, and shear studs are fixed on the energy-dissipating beams, and the two ends of the energy-dissipating beams are respectively fixedly connected with the non-energy-dissipating short beams of the two wall units .

The upper and lower wall units in the vertical direction are respectively fixedly connected through steel columns and steel skeletons, and the steel columns between the upper and lower wall units are butted and fixed and poured inside the floor slab.

One or more of the four sides of the concrete wall of the wall unit are rough or have key grooves in the horizontal direction.

The steel bar skeleton includes horizontal steel bars connected between steel columns, vertical steel bars vertically connected with the horizontal steel bars, and tie bars connected between the vertical steel bars.

The vertical steel bars between the upper and lower wall units are correspondingly connected through the steel bar sleeve slurry anchor connectors.

The length of the upper and lower ends of the steel column beyond the edge of the concrete wall is half the thickness of the floor slab.

The floor slab is an on-site poured concrete structure or an assembled prefabricated concrete structure.

The sum of the height of the concrete wall body of the wall unit and the height of the floor slab is consistent with the height of the floor.

The length of the non-energy-dissipating short beam beyond the edge of the concrete wall is 5 cm to 30 cm, and the non-energy-dissipating short beam and the energy-dissipating beam are connected by bolts, welding, or a mixture of bolts and welding. way to connect.

The steel columns, non-energy-dissipating short beams and energy-dissipating beams are all H-shaped steel or combined I-beam.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

The utility model overcomes the disadvantages of low construction efficiency and poor seismic performance of the traditional connected wall, and solves the technical problems of reducing construction waste and facilitating transportation and construction.

The prefabricated hybrid connected wall system of the present utility model adopts a prefabricated combined structure and is mainly used for shear walls and frame-shear wall systems. Carrying out mechanical analysis to verify the reliability of its structure can ensure that the whole system has better energy dissipation capacity and progressive collapse resistance in areas with high seismic intensity. Compared with traditional wall structures, it has better seismic performance, and Convenient transportation: First of all, compared with concrete coupling beams, the shear yield energy dissipation performance of steel beams is better than that of concrete beam end plastic hinge energy dissipation, and the former shear yield energy dissipation deformation is small, and it is resistant to continuous collapse under strong earthquakes Strong ability; secondly, replace the reinforced concrete edge restraint members with edge restraint members with steel columns, under the action of strong earthquakes, it can enhance the extensibility of the wall, delay the development of cracks, and facilitate the repair of the wall after the earthquake; thirdly, use strip steel The edge constraining member of the column replaces the reinforced concrete edge constraining member, which reduces the binding of steel bars, and divides the wall into standard wall units, which is convenient for batch production in the factory, and the volume of the divided and classified wall units is small. The transportation is convenient and fast; finally, since the manufacturing process of the wall units is basically prefabricated in the factory, the effective on-site supervision can be concentrated on the connection between the wall units, the construction quality of the project is easy to supervise and control, and it is easier to ensure the construction quality.

The construction of the prefabricated mixed limb wall system of the utility model is also simple, fast and efficient. The two processes of factory prefabrication and on-site assembly can be carried out at the same time, which improves the construction speed and provides a guarantee for the completion of the construction project on schedule. Compared with the existing Compared with pouring concrete shear walls, it can greatly reduce the time for on-site installation and removal of wall formwork and temporary support, and reduce the amount of wet work on site: replace reinforced concrete edge-restraining members with steel-column edge-restraining members, reducing edge Constraining the use of longitudinal steel bars for members facilitates the horizontal connection of wall units; steel beams replace concrete coupling beams, which can greatly reduce the time for on-site installation and removal of concrete coupling beam formwork and temporary support, and reduce the amount of wet work on site; After the wall unit-shaped steel columns are fixed, the stability of the upper wall can be guaranteed, and the process of setting up temporary support for the wall is omitted; the connection between the wall units of each layer of mixed limbs and the pouring of the floor slab can be constructed in a three-dimensional cross, thereby improving Construction efficiency, therefore, since the wall units are basically prefabricated in the factory, the formwork can be effectively reused, and the steel beam does not need to use formwork and temporary supports, so during the entire construction process, the amount of wet work on the concrete site is reduced, thereby reducing Reduced the input of formwork and temporary support, thereby reducing the generation of construction waste.

To sum up, compared with the cast-in-place concrete shear wall, the utility model can be manufactured at the same time as the on-site installation, which solves the problem of large amount of wet work on site for the cast-in-place concrete shear wall; compared with the existing general assembled shear wall , the edge restraint members with steel columns are used to replace the reinforced concrete edge restraint members, which solves the difficulty in the horizontal connection of the wall caused by the large number of longitudinal bars in this part, and at the same time, the fixing of the upper and lower wall units by steel columns also solves the problem of the upper wall Stability problems during the construction process, and realize the on-site splicing of the same-story joint wall units and the three-dimensional cross construction of the floor slab; steel beams replace concrete coupling beams to solve the problem of large wet work on site for cast-in-place concrete coupling beams, and use joint beams Instead of pre-embedded steel bars, since the joint beam is more rigid than the steel bar, there will be no bending phenomenon during transportation, and the quality is guaranteed.

The utility model can be widely used in the construction of the mixed limb wall structure system in construction engineering.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic structural view of the first wall unit of the present invention.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

Fig. 3 is a schematic structural view of the utility model.

Fig. 4 is a B-B sectional view of Fig. 3 .

Reference signs: 1-wall unit, 1.1-concrete wall, 1.2-steel column, 1.3-non-energy dissipation short beam, 1.4-steel column structural reinforcement, 1.5-steel skeleton, 1.6-shear stud, 1.7-keyway , 2-energy dissipating beam, 3-floor, 4-rebar sleeve slurry anchor connector.

Detailed ways

The embodiment is shown in Fig. 3 and Fig. 4, a prefabricated mixed limb wall system includes wall units 1 connected in the horizontal direction and vertical direction respectively, wherein floor slabs are arranged between the wall units connected in the vertical direction 3. The floor 3 is a cast-in-place concrete structure or a fabricated prefabricated concrete structure, and the sum of the height of the concrete wall of the wall unit and the height of the floor 3 is consistent with the floor height.

Referring to Figures 1 and 2, the wall unit 1 includes a concrete wall 1.1, steel columns 1.2 erected at both ends of the concrete wall 1.1, and a steel skeleton 1.5 located inside the concrete wall 1.1; the steel column 1.2 The upper and lower ends of the upper and lower ends of the concrete wall 1.1 are beyond the concrete wall 1.1, and the upper ends of the two steel columns 1.2 located in the concrete wall 1.1 are respectively connected with non-energy dissipating short beams 1.3 along the length direction of the concrete wall 1.1. The length of the other end of the beam 1.3 beyond the edge of the concrete wall 1.1 is 5 cm to 30 cm. The steel column 1.2 and the non-energy-dissipating short beam 1.3 are fixed with shear studs 1.6. The steel column 1.2, Both the non-energy dissipating short beam 1.3 and the energy dissipating beam 2 are H-shaped steel or combined I-beam; one or more of the four sides of the concrete wall 1.1 of the wall unit 1 is rough or has a keyway 1.7 in the horizontal direction .

The left and right wall units 1 in the horizontal direction are connected by energy-dissipating beams 2, on which the shear studs 1.6 are fixed, and the two ends of the energy-dissipating beams 2 are respectively connected to the non-conductive walls of the two wall units 1. The energy-dissipating short beam 1.3 is fixedly connected, and the non-energy-dissipating short beam 1.3 and the energy-dissipating beam 2 are connected by bolts, welds or a combination of bolts and welding.

The upper and lower wall units 1 in the vertical direction are respectively fixedly connected by steel columns 1.2 and steel bar skeletons 1.5. The steel columns between the upper and lower wall units are butted and fixed and poured inside the floor 3. The steel columns The length of the upper and lower ends beyond the edge of the concrete wall is half of the thickness of the floor 3 , and the vertical reinforcement between the upper and lower wall units is correspondingly connected through the reinforcement sleeve grout anchor connector 4 .

As shown in FIG. 2 , the reinforcement skeleton 1.8 includes horizontal reinforcements connected between the steel columns 1.2, vertical reinforcements vertically connected with the horizontal reinforcements, and tie bars connected between the vertical reinforcements.

A construction method of the prefabricated mixed limb wall system, the specific steps are as follows:

Prefabrication process for wall units:

Step 1, welding and fixing the shear stud 1.6 on the steel column 1.2 and the non-energy dissipating short beam 1.3.

Step 2, welding and fixing the steel column 1.2 and the non-energy dissipating short beam 1.6.

Step 3, fixing the steel column 1.2.

Step 4, tying horizontal steel bars, vertical steel bars and tie bars to form a steel bar skeleton 1.8, and fixing steel column structural bars 1.4 around the steel column 1.2.

Step 5, supporting the pouring formwork of the wall unit 1, and performing horizontal keyway or rough surface treatment on one or more of the four surfaces of the upper, lower, left, and right sides as required.

Step six, pouring concrete for wall unit 1.

Step 7: After pouring, forming and curing, the wall unit is lifted by lifting rings and demoulded to complete the prefabrication process of the wall unit.

On-site assembly process of the limb wall:

Step 1, transport the prefabricated wall units to the construction site, and start the site construction process.

Step 2, connect the upper wall units in the vertical direction, respectively connect and fix the steel columns of the upper and lower wall units, and connect the vertical steel bars correspondingly.

Step 3, connect the wall units in the horizontal direction, and connect the non-energy-dissipating short beams 1.3 of the left and right wall units to the two ends of the energy-dissipating beam 2 correspondingly.

Step 4, binding the reinforcing bars of the floor 3 and supporting the formwork of the floor 3 .

Step five, pouring the concrete of the floor slab 3 .

Step 6, to be poured into shape and maintained.

In step seven, repeat steps one to six in this process to complete the construction process of the entire prefabricated mixed limb wall system.

Claims (9)

1. an assembling mixing coupled wall system, comprise the wall unit (1) connecting respectively at horizontal direction, vertical direction, between the wall unit wherein connecting on vertical direction, be provided with floor (3), it is characterized in that: described wall unit (1) comprises concrete wall (1.1), is erected in the steel column (1.2) at the inner two ends of concrete wall (1.1) and is positioned at the inner cage of reinforcement (1.5) of concrete wall (1.1) respectively; The two ends up and down of described steel column (1.2) all exceed concrete wall (1.1), the length direction of upper end edge concrete wall (1.1) that is positioned at two steel columns (1.2) of concrete wall (1.1) is connected with respectively non-energy dissipating short beam (1.3) in opposite directions, and the other end of described non-energy dissipating short beam (1.3) exceeds concrete wall (1.1); On described steel column (1.2) and non-energy dissipating short beam (1.3), be all fixed with shearing resistance peg (1.6);

Between left and right wall unit (1) in horizontal direction, by energy dissipating beam (2), connect, be fixed with shearing resistance peg (1.6) on described energy dissipating beam (2), the two ends of energy dissipating beam (2) are fixedly connected with the non-energy dissipating short beam (1.3) of two wall unit (1) respectively;

Between upper and lower wall unit (1) on vertical direction by steel column (1.2) and cage of reinforcement (1.5) respectively correspondence be fixedly connected with, floor (3) inside is fixed and be cast in to the steel column butt joint between described upper and lower wall unit.

2. assembling mixing coupled wall system according to claim 1, is characterized in that: the concrete wall (1.1) of described wall unit (1) up and down one side or the multiaspect in four sides is matsurface or has in the horizontal direction keyway (1.7).

3. assembling mixing coupled wall system according to claim 2, is characterized in that: described cage of reinforcement (1.8) comprises the horizontal reinforcement that is connected between steel column (1.2), and horizontal reinforcement vertical reinforcing bar connected vertically and be connected to the tension rib between vertical reinforcing bar.

4. assembling mixing coupled wall system according to claim 3, is characterized in that: the vertical reinforcing bar between described upper and lower wall unit is starched the corresponding connection of anchor connector (4) by reinforced bar sleeve.

5. assembling mixing coupled wall system according to claim 4, is characterized in that: the length that the two ends up and down of described steel column exceed concrete wall edge is half of floor (3) thickness.

6. assembling mixing coupled wall system according to claim 5, is characterized in that: described floor (3) is the concrete structure of cast in situs or prefabricated concrete structure.

7. assembling mixing coupled wall system according to claim 6, is characterized in that: the height of the concrete wall of described wall unit is consistent with height sum and the story height of floor (3).

8. assembling mixing coupled wall system according to claim 7, it is characterized in that: the length range that the non-energy dissipating short beam of described non-energy dissipating short beam (1.3) (1.3) exceeds concrete wall (1.1) edge is 5 centimetres～30 centimetres, between non-energy dissipating short beam (1.3) and energy dissipating beam (2), be bolted, be welded to connect or bolt is connected with welding hybrid mode.

9. assembling mixing coupled wall system according to claim 8, is characterized in that: described steel column (1.2), non-energy dissipating short beam (1.3) and energy dissipating beam (2) are H shaped steel or combined I-shaped steel.