CN104032862A - Assembly-type steel beam joint L-shaped mixed coupled wall and construction method thereof - Google Patents

Abstract

Disclosed are an assembly-type steel beam joint L-shaped mixed coupled wall and a construction method thereof. The assembly-type steel beam joint L-shaped mixed coupled wall comprises a first wall unit and a second wall unit which are connected together perpendicularly and form an L shape. Both the first wall unit and the second wall unit are prefabricated parts, and the first wall unit and the second wall unit are connected through a joint post-pouring belt. According to the assembly-type steel beam joint L-shaped mixed coupled wall, steel beams are used for replacing concrete beams and section steel columns are used for replacing edge constraint reinforced concrete embedded columns, so that the mixed coupled wall has better energy-dissipating capacity and progressive-collapse-resistant capacity than a traditional coupled wall; prefabrication and on-site installation are conducted at the same time, therefore, the problems that the quantity of wet construction on a construction site is large and a lot of construction waste is generated are solved and assembly procedures are simplified; after butt welding is conducted on joint short beams, high rigidity is formed between the wall units, therefore, the stability of wall bodies in the construction process is facilitated, the procedure that a shear wall is prefabricated to be used as a temporary support is omitted and the construction efficiency is guaranteed. The construction method can be widely applied to construction of mixed coupled walls in constructional engineering.

Description

Prefabricated steel beam joint L-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 an assembled steel beam joint L-shaped mixed limb wall and its construction method, to solve the technical problems of large amount of construction work and low efficiency of the connected limb wall; and to solve the problem of generating a large amount of construction waste during construction question.

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

A prefabricated steel beam joint L-shaped mixed limb wall, including a first wall unit and a second wall unit that are vertically connected to each other to form an L shape, and the first wall unit and the second wall unit are prefabricated The components are connected by joint post-cast tape.

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 wall unit joint column are beyond the concrete wall of the first wall unit, and the upper, middle and lower parts of the first wall unit joint column located in the first wall unit concrete wall are respectively along the first wall unit The length direction of the concrete wall 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 The non-energy-dissipating short beam of the wall unit, the joint column of the first wall unit and the joint short beam of the first wall unit are all fixed with shear studs of the first wall unit.

The second wall unit includes a concrete wall of the second wall unit, steel columns of the second wall unit and seam columns of the second wall unit respectively erected at both ends of the concrete wall of the second wall unit, and the concrete wall of the second wall unit The steel skeleton of the second wall unit inside the body; 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 at the upper end of the steel column of the second wall unit in the concrete wall of the second wall unit A second wall unit non-energy dissipation short beam is connected along the length direction of the second wall unit concrete wall, and the other end of the second wall unit non energy dissipation short beam exceeds the second wall unit concrete wall; The upper and lower ends of the wall unit joint column are beyond the second wall unit concrete wall, and the upper end of the second wall unit joint column located in the second wall unit concrete wall is connected along the length direction of the second wall unit concrete wall There are non-energy-dissipating short beams of the second wall unit, the upper, middle and lower parts are connected in the same direction along the width direction of the concrete wall of the second wall unit, and the joint short beams of the second wall unit are connected. The other ends of the joint short beam and the second wall unit non-energy dissipation short beam all exceed the second wall unit concrete wall; the second wall unit steel column, the second wall unit non-energy dissipation short beam, and the second wall unit connection The shear studs of the second wall unit are fixed on the joint column and the joint short beam of the second wall unit.

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 reinforcement 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.

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.

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

A construction method of the L-shaped mixed limb wall with assembled steel beam joints, 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 first wall unit steel column structural reinforcement around the first wall unit steel column, and fixing the first wall unit joint column structural reinforcement around the first wall unit joint column.

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 6: Carry out maintenance and complete the on-site assembly construction of the L-shaped mixed limb wall.

On the basis of the described construction method, continue the construction method of the multi-layer assembled steel beam joint L-shaped mixed limb wall, and the specific steps are as follows:

Step 1, lifting the first wall unit of the upper floor and docking with the first wall unit of the lower floor, and connecting 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 weld the steel column of the first wall unit corresponding to the first wall unit of the two floors and the seam column of the first wall unit through penetration welding;

Step 3, setting a steel bar 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 the concrete at the upper and lower joints;

Step five, carry out maintenance, 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 prefabricated steel beam joint L-shaped mixed limb wall of the present invention adopts a prefabricated composite structure, and aims at the design and research of the L-shaped connection node in the prefabricated mixed limb wall system. Based on the finite element theory, a finite element model is established for The mechanical analysis of the prefabricated steel beam joint L-shaped mixed limb wall system is carried out to verify the reliability of its joints. The connection strength is high and the joint quality is good. The joints are fixed by butt welding of short-joint beams, and the short-joint beams after butt-welding form steel short beams in the post-casting zone of the joints. This is an important way for joint force transmission, and the quality of welds is easier to detect and easier To ensure the quality of the connection, in this way, a reliable connection is formed between the wall units, forming a beam-column system similar to a single-layer wall unit with multiple joints and short beams, which increases the strength and ductility of the joints in the horizontal direction; in addition , the joint short beam divides the original whole concrete wall into several parts, plays a role of hoop for the concrete, increases the compressive strength of the concrete, and the post-cast concrete has a diagonal bracing effect on the beam-like column system. At the same time, the joint There are also vertical bars and stirrups in the post-casting belt in the post-casting belt, which have a significant effect on improving the compressive strength of the concrete, and increase the strength and ductility of the vertical direction of the joint. Therefore, The node strength of the assembled steel beam joint L-shaped mixed limb wall of the present invention is higher than that of the component, which meets the requirements of the seismic structure.

The construction method of the prefabricated steel beam joint L-shaped mixed limb wall of the present invention is also more convenient, fast and efficient, including prefabrication in the factory and assembly on site. The high rigidity 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, Components are disassembled and classified into standard wall units. After 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 wet work on the concrete site The amount, thereby reducing the input amount 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 Seam column structural reinforcement, 1.10-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 Rib, 2.10-keyway;

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

Detailed ways

Referring to the embodiment shown in Fig. 5 and Fig. 6, an L-shaped hybrid siding wall with assembled steel beam joints includes a first wall unit 1 and a second wall unit 2 which are vertically connected to each other to form an L-shape, wherein the first wall The unit 1 is symmetrically distributed 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 two are connected by a joint The joint post-casting belt 3 is connected; the joint short beam 1.5 of the first wall unit and the joint short beam 2.5 of the second wall unit are butt-jointed and poured inside the joint post-casting belt 3, and the joint post-casting belt 3 is There are also vertical steel bars 3.1 with joint post-cast belts and joint post-cast belt stirrups 3.2 placed outside the joint post-cast belt vertical steel bars 3.1. When the joint post-cast belt vertical steel bars 3.1 are in two rows , the joint post-pouring with vertical reinforcement 3.1 is placed outside the first wall unit joint short beam 1.5 and the second wall unit joint short beam 2.5; when the joint post-casting belt vertical reinforcement 3.1 is three rows or more , the steel connectors are welded at the corresponding positions of the joint short beam 1.5 of the first wall unit and the joint short beam 2.5 of the second wall unit. and the concrete strength grade of the second wall unit 2 or more.

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-cast belt 3 adjacent to the joint are provided with horizontal key grooves 1.10; 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 Column structural reinforcement 1.9.

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 are beyond the first wall unit concrete wall 1.1, and are located at the top, middle and bottom of the first wall unit joint column 1.4 in the first wall unit concrete wall 1.1 The three parts are respectively connected with the first wall unit joint short beam 1.5 along the length direction of the first wall unit concrete wall 1.1, and the first wall unit joint short beam 1.5 exceeds the length of the edge of the first wall unit concrete wall 1.1 The range is 5 cm to 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 column 2.2 and the second wall unit erected at both ends of the second wall unit concrete wall 2.1 respectively The wall unit joint column 2.4 and the second wall unit reinforcement skeleton 2.8 located inside the second wall unit concrete wall 2.1; the second wall unit reinforcement skeleton 2.8 includes the second wall unit steel column 2.2 connected to the second wall unit The second wall unit horizontal reinforcement between joint columns 2.4, the second wall unit vertical reinforcement vertically connected to the second wall unit horizontal reinforcement and the second wall unit tie between the second wall unit vertical reinforcement ribs; the upper and lower sides of the second wall unit concrete wall 2.1 have horizontal keyways 2.10; the steel columns of the second wall unit steel column 2.2 and the second wall unit joint column 2.4 have a length of about high.

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 Column structural reinforcement 2.9.

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 end of the second wall unit steel column 2.2 located in the second wall unit concrete wall 2.1 is along the second wall unit concrete wall. The length direction of the wall 2.1 is connected with a 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 end of the second wall unit joint column 2.4 located in the second wall unit concrete wall 2.1 is along the second wall The length direction of the unit concrete wall 2.1 is connected with the second wall unit non-energy dissipating short beam 2.3,, upper, middle and lower three parts along the width direction of the second wall unit concrete wall 2.1 and the second wall unit is connected in the same direction. The joint short beam 2.5, the other end of the second wall unit joint short beam 2.5 and the second wall unit non-energy dissipation short beam 2.3 both exceed the second wall unit concrete wall 2.1, the second wall unit joint short beam The length of the beam 2.5 beyond the edge of the concrete wall 2.1 of the second wall unit is 5 cm to 10 cm.

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

A method for constructing a prefabricated steel beam joint L-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 5: Fix the steel column structural reinforcement 1.7 of the first wall unit around the steel column 1.2 of the first wall unit, and fix the structural reinforcement 1.9 of the joint column of the first wall unit around the joint column 1.4 of the first wall unit.

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 L-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 L-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 steel beam joint L-shaped mixed limb wall, including a first wall unit (1) and a second wall unit (2) that are vertically connected together to form an L shape, characterized in that: The first wall unit (1) and the second wall unit (2) are both prefabricated components, and the two are connected by a joint post-casting tape (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 upper and lower ends of (1.4) exceed the concrete wall of the first wall unit (1.1), and are located at the upper, middle and lower three sides of the joint column (1.4) of the first wall unit in the concrete wall of the first wall unit (1.1). The first wall unit joint short beams (1.5) are respectively connected along the length direction of the first wall unit concrete wall (1.1), and the other ends of the first wall unit joint short beams (1.5) are beyond the first The 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 connection The shear studs (1.6) of the first wall unit are fixed on the joint short beams (1.5); 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 the second wall The unit joint column (2.4) and the second wall unit steel skeleton (2.8) located inside the second wall unit concrete wall (2.1); the upper and lower ends of the second wall unit steel column (2.2) are beyond the second The wall unit concrete wall (2.1), the upper end of the second wall unit steel column (2.2) located in the second wall unit concrete wall (2.1) is connected with the second wall unit along the length direction of the second wall unit concrete wall (2.1). The non-energy-dissipating short beam (2.3) of the second wall unit, the other end of the non-energy-dissipating short beam (2.3) of the second wall unit exceeds the concrete wall (2.1) of the second wall unit; the joint column of the second wall unit The upper and lower ends of (2.4) are beyond the second wall unit concrete wall (2.1), and the upper end of the second wall unit joint column (2.4) located in the second wall unit concrete wall (2.1) is along the second wall unit The length direction of the concrete wall (2.1) is connected with the second wall unit non-energy dissipating short beam (2.3), and the upper, middle and lower parts are connected with the second wall unit along the width direction of the second wall unit concrete wall (2.1) in the same direction. The joint short beam (2.5) of the second wall unit, the other end of 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 is beyond the concrete wall of the second wall unit ( 2.1); the second wall unit steel column (2.2), the second wall unit non-energy dissipation short beam (2.3), the second wall unit joint column (2.4) and the second wall unit joint short beam (2.5) Both 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 steel beam joint L-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 There is a keyway (1.10) in the horizontal direction. 3. The prefabricated steel beam joint L-shaped mixed limb wall according to claim 2, characterized in that: one or more of the four sides of the second wall unit concrete wall (2.1) are rough surfaces or There is a keyway (2.10) in the horizontal direction. 4. The prefabricated steel beam joint L-shaped mixed limb wall according to claim 3, characterized in that: the joint short beam (1.5) of the first wall unit exceeds the concrete wall (1.1) of the first wall unit The length of the edge ranges from 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 steel beam joint L-shaped mixed limb wall according to claim 4, characterized in that: the steel skeleton (1.8) of the first wall unit includes a steel column (1.2) connected to the first wall unit and 1st wall unit horizontal bars between 1st wall unit joint columns (1.4), 1st wall unit vertical bars connected perpendicularly to 1st wall unit horizontal bars and 1st wall unit vertical bars connected between 1st wall unit vertical bars tie bars for the first wall unit; 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 steel beam joint L-shaped mixed limb wall according to claim 5, characterized in that: the first wall unit reinforcement skeleton (1.8) also includes a steel column (1.2) arranged on the first wall unit The surrounding first wall unit steel column structural reinforcement (1.7) and the first wall unit joint column structural reinforcement (1.9) arranged around the first wall unit joint column (1.4); 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) The joints around the second wall unit are column construction tendons (2.9). 7. The prefabricated steel beam joint L-shaped mixed limb wall according to any one of claims 1-6, characterized in that: the first wall unit steel column (1.2), the first wall unit non-energy-dissipating short The beam (1.3) and the first wall unit joint column (1.4) are both H-shaped steel or combined I-beam, and the first wall unit joint short beam (1.5) is H-shaped steel, combined I-beam or steel plate. 8. The prefabricated steel beam joint L-shaped mixed limb wall according to claim 7, characterized in that: the steel column (2.2) of the second wall unit and the non-energy-dissipating short beam (2.3) of the second wall unit All are H-shaped steel or combined I-beam, the joint column (2.4) of the second wall unit is cross-shaped steel, and the joint short beam (2.5) of the second wall unit is H-shaped steel, combined I-beam or steel plate. 9. A construction method for a prefabricated steel beam joint L-shaped mixed limb wall as claimed in any one of claims 1 to 8, 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); 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 L-shaped mixed limb wall. 10. The construction method of the prefabricated steel beam joint L-shaped mixed limb wall according to claim 9, characterized in that, on the basis of the construction method described in claim 9, the multi-layer prefabricated steel beam joint is continued. The construction method of the joint L-shaped mixed limb wall, the specific steps are as follows: Step 1, lifting the first wall unit (1) on the upper floor and docking with the first wall unit (1) on the lower floor, and connecting 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 weld the steel column of the first wall unit corresponding to the first wall unit of the two floors and the seam column of the first wall unit through penetration welding; Step 3, setting a steel bar 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 the concrete at the upper and lower joints; Step five, carry out maintenance, 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.