CN104032855A - Assembly-type cross-shaped mixed coupled wall and construction method thereof - Google Patents

Abstract

An assembled cross-shaped mixed limb wall and its construction method. The assembled cross-shaped mixed limb wall includes a first wall unit and a second wall unit that are vertically connected to each other to form a cross, wherein the first wall units are symmetrically distributed on the second wall. Both sides of the second wall unit, the first wall unit and the second wall unit are all prefabricated components, and the two are connected by joint post-casting tapes. The present invention uses steel beams instead of concrete beams, and steel columns instead of edge-constrained reinforced concrete concealed columns, so that the hybrid connected limb wall has better energy consumption capacity and continuous collapse resistance than the traditional connected limb wall, and the factory prefabrication and on-site installation can be carried out at the same time. To solve the problems of large amount of wet work and a lot of construction waste at the construction site, simplify the assembly process; after butt welding of the short beams at the joints, a relatively large rigidity has been formed between the wall units, which is conducive to the stability of the wall during the construction process, eliminating the need for The process of prefabricated shear walls as temporary support ensures construction efficiency. It can be widely used in the construction of mixed limb walls in construction projects.

Description

Prefabricated cross-shaped mixed limb wall and its construction method

technical field

The invention relates to a connected limb wall for construction engineering and a construction method thereof, in particular to an assembled mixed limb wall and a construction method thereof.

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.

Contents of the invention

The purpose of the present invention is to provide a prefabricated cross-shaped mixed limb wall and its construction method, to solve the technical problems of heavy construction work and low efficiency of the limb wall; and to solve the problem of generating a large amount of construction waste during construction.

To achieve the above object, the present invention adopts the following technical solutions:

A prefabricated cross-shaped mixed limb wall, including a first wall unit and a second wall unit vertically connected to each other to form a cross, wherein the first wall unit is symmetrically distributed on both sides of the second wall unit, and the two pass through Seam post-cast tape connection.

The first wall unit includes the first wall unit concrete wall, the first wall unit steel column and the first wall unit seam column erected at both ends of the first wall unit concrete wall, and the first wall unit concrete wall The steel skeleton of the first wall unit inside the body; the upper and lower ends of the steel column of the first wall unit exceed the concrete wall of the first wall unit, and the upper end of the steel column of the first wall unit located in the concrete wall of the first wall unit A first wall unit non-energy dissipation short beam is connected along the length direction of the first wall unit concrete wall, and the other end of the first wall unit non energy dissipation short beam exceeds the first wall unit concrete wall; The upper and lower ends of the joint column of the wall unit exceed the concrete wall of the first wall unit, and the upper and lower ends of the joint column of the first wall unit located in the concrete wall of the first wall unit, along the direction of the concrete wall of the first wall unit The length direction is connected with the first wall unit joint short beam, and the other end of the first wall unit joint short beam exceeds the first wall unit concrete wall; the first wall unit steel column, the first wall unit non-destructive The first wall unit shear studs are all fixed on the energy short beam, the first wall unit joint column and the first wall unit joint short beam.

The second wall unit includes a concrete wall of the second wall unit, steel columns of the second wall unit erected at both ends of the concrete wall of the second wall unit, and a second steel column erected in the center of the concrete wall of the second wall unit. The joint column of the wall unit and the reinforced skeleton of the second wall unit located inside the concrete wall of the second wall unit; the upper and lower ends of the steel column of the second wall unit exceed the concrete wall of the second wall unit and are located in the second wall unit The upper ends of the steel columns of the two second wall units in the concrete wall are respectively connected to the back along the length direction of the concrete wall of the second wall unit with non-energy-dissipating short beams of the second wall unit, and the second wall unit is non-energy-dissipating. The other end of the short beam exceeds the concrete wall of the second wall unit; the upper and lower ends of the joint column of the second wall unit exceed the concrete wall of the second wall unit, and the second wall located in the concrete wall of the second wall unit The upper and lower ends of the unit joint column are connected to the two sides of the second wall unit joint short beam along the width direction of the second wall unit concrete wall, and the other ends of the second wall unit joint short beam are beyond the The concrete wall of the second wall unit; the second wall unit steel column, the second wall unit non-energy dissipation short beam, the second wall unit joint column and the second wall unit joint short beam are all fixed with the second wall unit anti-corrosion Cut the studs.

The short joint beam of the first wall unit and the short joint beam of the second wall unit are butt-cast in the joint post-casting belt, and the joint post-casting belt is also provided with vertical steel bars inside the joint post-casting belt And joints post-cast with stirrups.

One or more of the top, bottom, left, and right sides of the concrete wall of the first wall unit is rough or has key grooves in the horizontal direction.

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

The length of the joint short beam of the first wall unit beyond the edge of the concrete wall of the first wall unit is in the range of 5 cm to 10 cm.

The length of the joint short beam of the second wall unit beyond the edge of the concrete wall of the second wall unit is 5 cm to 10 cm.

The reinforcement skeleton of the first wall unit includes the first wall unit horizontal reinforcement connected between the first wall unit steel column and the first wall unit seam column, and the first wall unit vertical reinforcement vertically connected with the first wall unit horizontal reinforcement. Straight bars and tie bars of the first wall unit connected between the vertical bars of the first wall unit.

The reinforcement skeleton of the second wall unit includes the second wall unit horizontal reinforcement connected between the second wall unit steel column and the second wall unit joint column, and the second wall unit vertical reinforcement vertically connected with the second wall unit horizontal reinforcement. Straight bars and tie bars of the second wall unit connected between the vertical bars of the second wall unit.

The steel bar skeleton of the first wall unit also includes the first wall unit steel column structural reinforcement arranged around the first wall unit steel column and the first wall unit seam column structural reinforcement arranged around the first wall unit joint column and The anchor ring reinforcement of the first wall unit, the anchor ring reinforcement of the first wall unit and the joint short beam of the first wall unit extend beyond the concrete wall of the first wall unit in the same direction.

The reinforcement skeleton of the second wall unit also includes the second wall unit steel column structural reinforcement arranged around the second wall unit steel column and the second wall unit joint column structural reinforcement arranged around the second wall unit joint column and The anchor ring reinforcement of the second wall unit, the anchor ring reinforcement of the second wall unit and the joint short beam of the second wall unit extend beyond the concrete wall of the second wall unit in the same direction.

The length of the anchor ring reinforcement of the first wall unit beyond the edge of the concrete wall of the first wall unit is 4 cm to 10 cm;

The length of the anchor ring reinforcement of the second wall unit beyond the edge of the concrete wall of the second wall unit is 4 cm to 10 cm.

The steel column of the first wall unit, the non-energy dissipation short beam of the first wall unit and the joint column of the first wall unit are all H-shaped steel or combined I-beam, and the joint short beam of the first wall unit is H-shaped steel, Combined I-beam or steel plate.

The steel column of the second wall unit, the non-energy dissipation short beam of the second wall unit and the joint column of the second wall unit are all H-shaped steel or combined I-beam, and the joint short beam of the second wall unit is H-shaped steel, Combined I-beam or steel plate.

A construction method of the assembled cross-shaped mixed limb wall, the specific steps are as follows:

Prefabrication process of the first wall unit and the second wall unit:

Step 1: welding and fixing the first wall unit shear studs on the first wall unit steel column, the first wall unit non-energy dissipation short beam, the first wall unit joint column and the first wall unit joint short beam.

Step 2, welding and fixing the steel column of the first wall unit to the non-energy dissipation short beam of the first wall unit, and welding and fixing the joint column of the first wall unit to the joint short beam of the first wall unit.

Step 3, fix the first wall unit steel column and the first wall unit joint column respectively.

Step 4, binding the first wall unit horizontal reinforcement, the first wall unit vertical reinforcement and the first wall unit tie bars to form the first wall unit reinforcement skeleton.

Step 5, fixing the steel column structural reinforcement of the first wall unit around the steel column of the first wall unit, and fixing the joint column structural reinforcement of the first wall unit and the anchor ring reinforcement of the first wall unit around the joint column of the first wall unit.

Step 6, support the formwork of the first wall unit, and perform horizontal keyway or rough surface treatment on the four sides of the upper, lower, left, and right sides.

Step seven, pouring the concrete of the first wall unit.

Step 8: after pouring and curing, demoulding is carried out to complete the prefabrication process of the first wall unit, the prefabrication process of the second wall unit is the same as that of the first wall unit, and the prefabrication process of the second wall unit is completed at the same time.

On-site assembly process of mixed limb wall:

Step 1, transport the prefabricated first wall unit and second wall unit to the construction site, and start the on-site construction process.

In step 2, the joint short beams of the first wall unit of the first wall unit and the joint short beams of the second wall unit of the second wall unit are correspondingly fixed by butt welding.

Step 3, binding the joints and post-casting the vertical steel bars and joints post-casting with stirrups.

Step 4, supporting the formwork of the poured tape after the seam.

Step 5, after pouring the joints, pour the concrete with the belt.

Step six, perform maintenance, and complete the on-site assembly construction of the cross-shaped mixed limb wall.

The prefabricated cross-shaped mixed limb wall of the present invention adopts a prefabricated combined structure, and is designed for the design and research of the cross-shaped connection nodes in the prefabricated hybrid connected limb wall system. The mechanical analysis of the mixed limb wall system is carried out to verify the reliability of its joints. The joint strength is high and the joint quality is good: first, the wall units are all mixed structures of steel bars, section steel and concrete, and the wall units are butt welded by short beams at the joints Fixed, the joint short beam after butt welding forms a steel short beam in the joint post-casting belt, which is an important way for joint force transmission, and the quality of the weld is easier to detect, and it is easier to ensure the quality of the connection. In this way, in A reliable connection is formed between the wall units, which is similar to a beam-column system. Two joint short beams and anchor ring bars on a single-layer wall unit increase the strength and ductility of the joint in the horizontal direction; the existence of anchor ring bars, The post-cast concrete has a diagonal bracing effect on the beam-like column system, ensuring the connection strength between the wall units. In addition, the short joint beam divides the original entire concrete wall into several parts and acts as a hoop for the concrete. The compressive strength of concrete is increased. At the same time, there are also vertical bars and stirrups in the joint post-cast belt, which have a significant effect on improving the concrete compressive strength and increase the strength of the concrete. The strength and ductility of the joint in the vertical direction, therefore, the joint strength of the assembled cross-shaped mixed limb wall of the present invention is higher than that of the component, which meets the requirements of the earthquake-resistant structure.

The construction method of the prefabricated cross-shaped mixed limb wall of the present invention is also simpler, faster and more efficient, including prefabrication in the factory, assembly on site, and after butt welding of the short beams at the joints, greater rigidity has been formed between the wall units. It is conducive to the stability of the wall during the construction process, and the two processes 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. Considering the convenience of making, hoisting and transportation of the mixed limb wall unit, the components are disassembled Classified as standard wall units, after being transported to the construction site, they are assembled with node structures that are reliable in connection and convenient for construction. During the construction of the project, the assembly and combination of structures reduces the amount of wet work on the concrete site, thus reducing Reduced the input of formwork and temporary support, thereby reducing the generation of construction waste.

The invention satisfies the anti-seismic requirements of the mixed limb wall system, realizes the construction mode of factory prefabrication and on-site assembly synchronously, and the joint post-casting belt ensures the reliability of node connection.

Compared with the traditional cast-in-place concrete attached wall, steel beams are used instead of concrete beams, and steel columns are used to replace edge-constrained reinforced concrete concealed columns, so that the hybrid attached wall has better energy dissipation capacity and resistance to continuous collapse than traditional attached walls capacity, using joint beams instead of pre-embedded steel bars, because joint beams are more rigid than steel bars, there will be no bending phenomenon during transportation, and quality is guaranteed, and factory prefabrication and on-site installation are carried out at the same time, solving the problem of heavy wet work on the construction site, There is a lot of construction waste, which is convenient to meet the requirements of building use and simplify the assembly process; compared with the existing general prefabricated limb wall, after the joint short beam butt welding, the wall units have formed a greater rigidity, which is conducive to the construction process. The stability of the wall saves the process of prefabricated shear walls as temporary support, ensures construction efficiency, reduces the input of formwork temporary support, and reduces the generation of construction waste.

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

Description of drawings

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

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 second wall unit of the present invention.

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

Fig. 5 is a structural schematic diagram of the present invention.

Fig. 6 is a C-C sectional view of Fig. 5 .

Reference signs: 1-the first wall unit, 1.1-the concrete wall of the first wall unit, 1.2-the steel column of the first wall unit, 1.3-the non-energy dissipating short beam of the first wall unit, 1.4-the seam of the first wall unit Column, 1.5-joint short beam of the first wall unit, 1.6-shear studs of the first wall unit, 1.7-steel column structural reinforcement of the first wall unit, 1.8-steel skeleton of the first wall unit, 1.9-first wall unit Joint column structural reinforcement, 1.10-anchor ring reinforcement of the first wall unit, 1.11-keyway;

2-Second wall unit, 2.1-Second wall unit concrete wall, 2.2-Second wall unit steel column, 2.3-Second wall unit non-energy dissipation short beam, 2.4-Second wall unit joint column, 2.5- Joint short beam of the second wall unit, 2.6- shear studs of the second wall unit, 2.7- steel column structural reinforcement of the second wall unit, 2.8- reinforced skeleton of the second wall unit, 2.9- joint column structure of the second wall unit Reinforcement, 2.10-second wall unit anchor ring reinforcement, 2.11-keyway;

3-joint post-pouring belt, 3.1-joint post-pouring belt vertical reinforcement, 3.2-joint post-pouring belt stirrup.

Detailed ways

The embodiment is shown in Fig. 5 and Fig. 6. An assembled cross-shaped mixed limb wall includes a first wall unit 1 and a second wall unit 2 which are vertically connected to each other to form a cross, wherein the first wall units 1 are distributed symmetrically. On both sides of the second wall unit 2, the first wall unit 1 and the second wall unit 2 are prefabricated components, the concrete strength grade is not less than C30 and not higher than C60, and the post-casting tape is passed between the two 3 connection; the short joint beam 1.5 of the first wall unit and the short joint beam 2.5 of the second wall unit are butt-cast in the joint post-casting belt 3, and the joint post-casting belt 3 is also provided with a joint The vertical steel bars 3.1 of the post-seam pouring belt and the stirrup bars 3.2 of the post-sealing post-casting belt placed on the outside of the vertical reinforcement 3.1 of the post-joint post-casting belt. The vertical steel bar 3.1 of the pouring belt is placed outside the joint short beam 1.5 of the first wall unit and the joint short beam 2.5 of the second wall unit; The joint short beam 1.5 of the first wall unit and the joint short beam 2.5 of the second wall unit are welded with steel bar connectors, and the vertical steel bar 3.1 of the post-casting joint is placed on the anchor ring bar 1.10 of the first wall unit and/or Or in the anchor ring reinforcement 2.10 of the second wall unit, the concrete strength grade of the post-cast joint 3 should be two grades or more higher than the concrete strength grades of the first wall unit 1 and the second wall unit 2 .

Referring to Fig. 1 and Fig. 2, the first wall unit 1 includes a first wall unit concrete wall 1.1, first wall unit steel columns 1.2 and first The wall unit joint column 1.4 and the first wall unit steel skeleton 1.8 located inside the first wall unit concrete wall 1.1; the first wall unit steel skeleton 1.8 includes the steel column 1.2 connected to the first wall unit and the first wall unit The first wall unit horizontal reinforcement between joint columns 1.4, the first wall unit vertical reinforcement vertically connected to the first wall unit horizontal reinforcement, and the first wall unit tie between the first wall unit vertical reinforcement Ribs; the upper and lower sides of the concrete wall 1.1 of the first wall unit and the surface of the post-casting belt 3 adjacent to the joint are provided with key grooves 1.11 in the horizontal direction; the steel column 1.2 of the first wall unit and the first wall unit The steel column length of joint column 1.4 is about storey height.

The first wall unit reinforcement skeleton 1.8 also includes the first wall unit steel column structural reinforcement 1.7 arranged around the first wall unit steel column 1.2 and the first wall unit seam arranged around the first wall unit joint column 1.4 The column construction reinforcement 1.9 and the first wall unit anchor ring reinforcement 1.10, the first wall unit anchor ring reinforcement 1.10 and the first wall unit joint short beam 1.5 go beyond the first wall unit concrete wall 1.1 in the same direction, the first wall unit The length of wall unit anchor ring reinforcement 1.10 beyond the edge of the first wall unit concrete wall 1.1 is 4 cm to 10 cm, and the vertical spacing of the first wall unit anchor ring reinforcement 1.10 is consistent with the vertical spacing of the first wall unit horizontal reinforcement .

The upper and lower ends of the first wall unit steel column 1.2 are beyond the first wall unit concrete wall 1.1, and the upper end of the first wall unit steel column 1.2 located in the first wall unit concrete wall 1.1 is along the first wall unit concrete wall. The length direction of the wall 1.1 is connected with a first wall unit non-energy dissipating short beam 1.3, and the other end of the first wall unit non-energy dissipating short beam 1.3 exceeds the first wall unit concrete wall 1.1.

The upper and lower ends of the first wall unit joint column 1.4 both exceed the first wall unit concrete wall 1.1, and the upper and lower ends of the first wall unit joint column 1.4 located in the first wall unit concrete wall 1.1, along the The length direction of the first wall unit concrete wall 1.1 is connected with the first wall unit joint short beam 1.5, and the length range of the first wall unit joint short beam 1.5 beyond the edge of the first wall unit concrete wall 1.1 is 5 cm ~10 cm.

The steel column 1.2 of the first wall unit, the non-energy-dissipating short beam 1.3 of the first wall unit and the joint column 1.4 of the first wall unit are all H-shaped steel or combined I-beam, the strength grade is Q345, and the joint of the first wall unit The short beam 1.5 is H-shaped steel, combined I-beam or steel plate, the strength grade is Q345, and the first wall unit shear studs 1.6 are fixed on the outer edge of the flange of the shaped steel or on the edge of the steel plate.

Referring to Fig. 3 and Fig. 4, the second wall unit 1 includes the second wall unit concrete wall 2.1, the second wall unit steel columns 2.2 erected at both ends of the second wall unit concrete wall 2.1, and the center erected The second wall unit joint column 2.4 inside the second wall unit concrete wall 2.1 and the second wall unit steel skeleton 2.8 located inside the second wall unit concrete wall 2.1; the second wall unit steel skeleton 2.8 includes connection The second wall unit horizontal reinforcement between the second wall unit steel column 2.2 and the second wall unit joint column 2.4, the second wall unit vertical reinforcement vertically connected to the second wall unit horizontal reinforcement and the second wall unit vertical reinforcement connected to the second wall The tie bars of the second wall unit between the vertical steel bars of the unit; the upper and lower sides of the concrete wall 2.1 of the second wall unit have horizontal key grooves 2.11; the steel columns of the second wall unit 2.2 and the second The steel column length of the wall unit joint column 2.4 is about the story height.

The second wall unit reinforcement skeleton 2.8 also includes the second wall unit steel column structural reinforcement 2.7 arranged around the second wall unit steel column 2.2 and the second wall unit seam arranged around the second wall unit joint column 2.4 The column construction reinforcement 2.9 and the second wall unit anchor ring reinforcement 2.10, the second wall unit anchor ring reinforcement 2.10 and the second wall unit joint short beam 2.5 extend beyond the second wall unit concrete wall 2.1 in the same direction, the second wall unit The length of the anchor ring reinforcement 2.10 of the wall unit beyond the edge of the concrete wall 2.1 of the second wall unit is 4 cm to 10 cm, and the vertical spacing of the anchor ring reinforcement 2.10 of the second wall unit is consistent with the vertical spacing of the horizontal steel bars of the second wall unit .

The upper and lower ends of the second wall unit steel column 2.2 are beyond the second wall unit concrete wall 2.1, and the upper ends of the two second wall unit steel columns 2.2 located in the second wall unit concrete wall 2.1 are along the second wall The length direction of the unit concrete wall 2.1 is respectively connected with the second wall unit non-energy dissipating short beam 2.3, and the other end of the second wall unit non-energy dissipating short beam 2.3 exceeds the second wall unit concrete wall 2.1.

The upper and lower ends of the second wall unit joint column 2.4 are beyond the second wall unit concrete wall 2.1, and the upper and lower ends of the second wall unit joint column 2.4 located in the second wall unit concrete wall 2.1 are along the first The width direction of the concrete wall body 2.1 of the second wall unit is respectively connected to the two sides by the joint short beam 2.5 of the second wall unit, the joint short beam 2.5 of the second wall unit and the non-energy dissipation short beam 2.3 of the second wall unit The other ends are beyond the second wall unit concrete wall 2.1, and the length of the second wall unit joint short beam 2.5 beyond the edge of the second wall unit concrete wall 2.1 is 5 cm to 10 cm.

The steel column 2.2 of the second wall unit, the non-energy-dissipating short beam 2.3 of the second wall unit and the joint column 2.4 of the second wall unit are all H-shaped steel or combined I-beam with a strength grade of Q345, and the second wall unit The joint short beam 2.5 is H-shaped steel, composite I-beam or steel plate, the strength grade is Q345, and the second wall unit shear stud 2.6 is fixed on the outer edge of the flange of the above-mentioned steel plate or the edge of the steel plate.

A construction method for a prefabricated cross-shaped mixed limb wall, the specific steps are as follows:

Prefabrication process of the first wall unit 1 and the second wall unit 2:

Step 1: Weld and fix the first wall unit shear resistance on the steel column 1.2 of the first wall unit, the non-energy dissipating short beam 1.3 of the first wall unit, the joint column 1.4 of the first wall unit and the short joint beam 1.5 of the first wall unit Stud 1.6.

Step 2, welding and fixing the first wall unit steel column 1.2 and the first wall unit non-energy dissipating short beam 1.6, and welding and fixing the first wall unit joint column 1.4 and the first wall unit joint short beam 1.5.

Step 3, fixing the steel column 1.2 of the first wall unit and the joint column 1.4 of the first wall unit respectively.

Step 4, binding the first wall unit horizontal reinforcement, the first wall unit vertical reinforcement and the first wall unit tie bars to form the first wall unit reinforcement skeleton 1.8.

Step five, fix the first wall unit steel column structural reinforcement 1.7 around the first wall unit steel column 1.2, fix the first wall unit joint column structural reinforcement 1.9 and the first wall unit anchor around the first wall unit joint column 1.4 Ring bars 1.10.

Step 6, support the formwork of the first wall unit 1, and perform horizontal key groove or rough surface treatment on the four sides of the upper, lower, left, and right sides.

Step seven, pouring the concrete of the first wall unit 1 .

Step 8: After pouring and curing, demoulding is carried out to complete the prefabrication process of the first wall unit 1, the prefabrication process of the second wall unit 2 is the same as that of the first wall unit 1, and the prefabrication of the second wall unit 2 is completed at the same time process.

On-site assembly process of the first wall unit 1 and the second wall unit 2:

Step 1, transport the prefabricated first wall unit 1 and second wall unit 2 to the construction site, and start the on-site construction process.

In step 2, the short joint beam 1.5 of the first wall unit 1 and the short joint beam 2.5 of the second wall unit 2 are correspondingly fixed by butt welding.

Step 3, binding the vertical reinforcement 3.1 after the joints and the stirrups 3.2 after the joints.

Step 4, setting up the formwork of the cast belt 3 after the seam.

Step five, after pouring the joints, pour the concrete with 3.

Step 6: Carry out maintenance and complete the on-site assembly construction of the single-layer cross-shaped mixed limb wall.

On-site assembly process of multi-layer first wall unit 1 and/or second wall unit 2:

Step 1: Hoist the first wall unit 1 on the upper floor and dock it with the first wall unit 1 on the lower floor, and connect the steel column of the first wall unit of the two floors with the seam column of the first wall unit by corresponding spot welding.

Step 2: Take off the hook, and perform penetration welding on the first wall unit steel column and the first wall unit seam column corresponding to the first wall unit on the two floors.

Step 3, setting up the reinforcement skeleton at the upper and lower joints of the double-layer first wall unit, and supporting the concrete pouring formwork at the upper and lower joints.

Step 4, pouring concrete at the upper and lower joints.

Step 5: Carry out maintenance and complete the on-site assembly construction of the double-layer first wall unit, and the construction of the double-layer second wall unit is the same as that of the first wall unit.

Step 6: Repeat steps 1 to 5 to complete the on-site assembly construction of the multi-layer cross-shaped mixed limb wall.

The first wall unit 1 and the second wall unit 2 are prefabricated in the factory and assembled and installed on site. The two processes can be carried out at the same time, which improves the construction efficiency and provides a guarantee for the completion of the construction project on schedule.

Claims (10)

1. A prefabricated cross-shaped mixed limb wall, including a first wall unit (1) and a second wall unit (2) that are vertically connected to each other to form a cross, wherein the first wall unit (1) is symmetrically distributed in the second The two sides of the wall unit (2) are characterized in that: the first wall unit (1) and the second wall unit (2) are both prefabricated components, and the two are connected by joint post-casting tapes (3); The first wall unit (1) includes the first wall unit concrete wall (1.1), the first wall unit steel column (1.2) erected at both ends of the first wall unit concrete wall (1.1) and the first wall The unit joint column (1.4) and the first wall unit steel skeleton (1.8) located inside the first wall unit concrete wall (1.1); the upper and lower ends of the first wall unit steel column (1.2) are beyond the first The wall unit concrete wall (1.1), the upper end of the first wall unit steel column (1.2) located in the first wall unit concrete wall (1.1) is connected with the second wall unit along the length direction of the first wall unit concrete wall (1.1). A non-energy-dissipating short beam (1.3) of a wall unit, the other end of the non-energy-dissipating short beam (1.3) of the first wall unit exceeds the concrete wall (1.1) of the first wall unit; the joint column of the first wall unit Both the upper and lower ends of (1.4) exceed the first wall unit concrete wall (1.1), and the upper and lower ends of the first wall unit joint column (1.4) located in the first wall unit concrete wall (1.1), along the first wall unit A wall unit concrete wall (1.1) is connected with a first wall unit joint short beam (1.5) in the length direction, and the other end of the first wall unit joint short beam (1.5) exceeds the first wall unit concrete wall (1.1); the first wall unit steel column (1.2), the first wall unit non-energy dissipation short beam (1.3), the first wall unit joint column (1.4) and the first wall unit joint short beam (1.5 ) are fixed with the first wall unit shear studs (1.6); The second wall unit (2) includes the second wall unit concrete wall (2.1), the second wall unit steel column (2.2) erected at both ends of the second wall unit concrete wall (2.1), and erected in the center The second wall unit joint column (2.4) inside the second wall unit concrete wall (2.1) and the second wall unit steel skeleton (2.8) inside the second wall unit concrete wall (2.1); the second The upper and lower ends of the steel column of the wall unit (2.2) are beyond the concrete wall of the second wall unit (2.1), and the upper ends of the two steel columns of the second wall unit (2.2) are located in the concrete wall of the second wall unit (2.1) Along the length direction of the concrete wall (2.1) of the second wall unit, a second wall unit non-energy dissipating short beam (2.3) is respectively back connected, and the other end of the second wall unit non-energy dissipating short beam (2.3) exceeds The second wall unit concrete wall (2.1); the upper and lower ends of the second wall unit joint column (2.4) are beyond the second wall unit concrete wall (2.1), located in the second wall unit concrete wall (2.1 ) The upper and lower ends of the second wall unit joint column (2.4) are respectively connected to the two sides along the width direction of the second wall unit concrete wall (2.1) with the second wall unit joint short beams (2.5), The other end of the joint short beam (2.5) of the second wall unit exceeds the concrete wall of the second wall unit (2.1); the steel column (2.2) of the second wall unit, the non-energy dissipation short beam of the second wall unit (2.3), the second wall unit joint column (2.4) and the second wall unit joint short beam (2.5) are fixed with the second wall unit shear studs (2.6); The short joint beams (1.5) of the first wall unit and the short joint beams (2.5) of the second wall unit are butt-poured inside the joint post-casting belt (3), and the joint post-casting belt (3) There are also vertical steel bars (3.1) and stirrups (3.2) with post-cast joints inside. 2. The prefabricated cross-shaped mixed limb wall according to claim 1, characterized in that: one or more of the four sides of the first wall unit concrete wall (1.1) are rough surfaces or open in the horizontal direction. with keyway (1.11). 3. The prefabricated cross-shaped mixed limb wall according to claim 2, characterized in that: one or more of the upper, lower, left, and right sides of the second wall unit concrete wall (2.1) is a rough surface or is open in the horizontal direction. With keyway (2.11). 4. The prefabricated cross-shaped mixed limb wall according to claim 3, characterized in that: the joint short beam (1.5) of the first wall unit exceeds the length range of the edge of the concrete wall (1.1) of the first wall unit It is 5 cm to 10 cm; The length of the second wall unit joint short beam (2.5) beyond the edge of the second wall unit concrete wall (2.1) ranges from 5 cm to 10 cm. 5. The prefabricated cross-shaped mixed limb wall according to claim 4, characterized in that: the steel skeleton (1.8) of the first wall unit includes steel columns (1.2) connected to the first wall unit and the first wall unit 1st wall unit horizontal bars between joint columns (1.4), 1st wall unit vertical bars connected perpendicular to 1st wall unit horizontal bars and 1st wall unit connected between 1st wall unit vertical bars pull the knot; The second wall unit reinforcement skeleton (2.8) includes the second wall unit horizontal reinforcement connected between the second wall unit steel column (2.2) and the second wall unit joint column (2.4), and the second wall unit horizontal reinforcement The vertical reinforcing bars of the second wall unit connected vertically by the reinforcing bars and the tie bars of the second wall unit connected between the vertical reinforcing bars of the second wall unit. 6. The prefabricated cross-shaped mixed limb wall according to claim 5, characterized in that: the steel skeleton (1.8) of the first wall unit also includes first steel columns (1.2) arranged around the first wall unit The wall unit steel column structural reinforcement (1.7), the first wall unit joint column structural reinforcement (1.9) and the first wall unit anchor ring reinforcement (1.10) arranged around the first wall unit joint column (1.4), said The first wall unit anchor ring reinforcement (1.10) and the first wall unit joint short beam (1.5) extend beyond the first wall unit concrete wall (1.1) in the same direction; The second wall unit reinforcement skeleton (2.8) also includes the second wall unit steel column structural reinforcement (2.7) arranged around the second wall unit steel column (2.2) and the second wall unit joint column (2.4) Around the second wall unit joint column construction reinforcement (2.9) and the second wall unit anchor ring reinforcement (2.10), the second wall unit anchor ring reinforcement (2.10) and the second wall unit joint short beam (2.5) Exceed the concrete wall of the second wall unit in the same direction (2.1). 7. The prefabricated cross-shaped mixed limb wall according to any one of claims 1 to 6, characterized in that: the anchor ring reinforcement (1.10) of the first wall unit exceeds the edge of the concrete wall (1.1) of the first wall unit The length range is 4 cm to 10 cm; The length of the anchor ring reinforcement (2.10) of the second wall unit beyond the edge of the concrete wall (2.1) of the second wall unit is in the range of 4 cm to 10 cm. 8. The prefabricated cross-shaped mixed limb wall according to claim 7, characterized in that: the steel column (1.2) of the first wall unit, the non-energy-dissipating short beam (1.3) of the first wall unit and the first wall The unit joint columns (1.4) are all H-shaped steels or combined I-beams, and the first wall unit joint short beams (1.5) are H-shaped steels, combined I-beams or steel plates. 9. The prefabricated cross-shaped mixed limb wall according to claim 8, characterized in that: the steel column (2.2) of the second wall unit, the non-energy-dissipating short beam (2.3) of the second wall unit and the second wall The unit joint columns (2.4) are all H-shaped steels or combined I-beams, and the unit joint short beams (2.5) of the second wall are H-shaped steels, combined I-beams or steel plates. 10. A construction method for a prefabricated cross-shaped mixed limb wall as claimed in any one of claims 1 to 9, characterized in that the specific steps are as follows: Prefabrication process of the first wall unit (1) and the second wall unit (2): Step 1, on the first wall unit steel column (1.2), the first wall unit non-energy dissipating short beam (1.3), the first wall unit joint column (1.4) and the first wall unit joint short beam (1.5) Welding and fixing the first wall unit shear studs (1.6); Step 2, welding and fixing the first wall unit steel column (1.2) and the first wall unit non-energy dissipation short beam (1.6), the first wall unit joint column (1.4) and the first wall unit joint short beam (1.5 ) welding fixed; Step 3, respectively fix the first wall unit steel column (1.2) and the first wall unit joint column (1.4); Step 4, binding the first wall unit horizontal reinforcement, the first wall unit vertical reinforcement and the first wall unit tie bars to form the first wall unit reinforcement skeleton (1.8); Step five, fix the first wall unit steel column structural reinforcement (1.7) around the first wall unit steel column (1.2), and fix the first wall unit joint column structural reinforcement around the first wall unit joint column (1.4) ( 1.9) and the first wall unit anchor ring reinforcement (1.10); Step 6, support the formwork of the first wall unit (1), and perform horizontal keyway or rough surface treatment on the upper, lower, left, and right sides; Step seven, pouring the concrete of the first wall unit (1); Step 8: After pouring and curing, demoulding is carried out to complete the prefabrication process of the first wall unit (1), the prefabrication process of the second wall unit (2) is the same as that of the first wall unit (1), and the second wall unit (1) is completed at the same time Prefabrication process of the second wall unit (2); On-site assembly process of mixed limb wall: Step 1, transport the prefabricated first wall unit (1) and second wall unit (2) to the construction site, and start the on-site construction process; Step 2: Correspond to the short beam (1.5) of the first wall unit joint of the first wall unit (1) and the joint short beam (2.5) of the second wall unit (2) of the second wall unit (2), and fix them by butt welding ; Step 3, binding vertical reinforcement (3.1) after joints and stirrups (3.2) after joints; Step 4, supporting the formwork of the post-casting tape (3) after the seam; Step 5, pouring the concrete of the belt (3) after pouring the joint; Step 6: Carry out maintenance and complete the on-site assembly construction of the single-layer cross-shaped mixed limb wall.