CN115653108A - Semi-surrounding eccentric core barrel and construction method thereof - Google Patents

Abstract

The invention relates to the technical field of supporting members made of two or more materials, and discloses a semi-surrounding eccentric core barrel and a construction method thereof. The structure of the eccentric core barrel fully surrounded by the shear wall is changed into the structure surrounded by one column, so that the interior of the core barrel is provided with enough view field; meanwhile, the two core cylinders and the oblique grid steel cylinder are rigidly connected into a whole, so that the problem of insufficient rigidity of a single eccentric core cylinder or a single oblique grid steel cylinder is solved.

Description

A semi-enclosed eccentric core tube and its construction method

technical field

The invention relates to the technical field of supporting components made of two or more materials, in particular to a semi-enclosed eccentric core tube and its construction method.

Background technique

For buildings close to the landscape, in addition to the structural strength requirements and appearance requirements that conventional buildings need to meet, they often need to have higher vision requirements than conventional buildings. Because this kind of building is not only used as a venue for personnel activities, but also as a platform for viewing. Taking sea view rooms as an example, the side close to the sea generally requires large floor-to-ceiling windows, and even the entire wall is a curtain wall.

For buildings that use load-bearing walls as force-bearing components, the load-bearing walls will undoubtedly seriously block the view from the inside of the building to the outside, so most of the viewing buildings are steel structure buildings. However, large-scale pure steel structures have their own limitations. Since the rigidity of pure steel structures is not as good as that of reinforced concrete (steel structures are classified as flexible structures, while shear walls are rigid structures), the The number of floors in the vertical direction is severely limited (generally it should not exceed 6 floors, and the maximum should not exceed 15 floors). If you want to build a steel structure building with a large number of floors, you often need to set up a steel structure building in the center of the building. A core tube surrounded by reinforced concrete shear walls. However, this has brought about two new problems. One is that the core tube does not have a view to the outside at all, so this part of the area does not have a viewing function; the other is that due to the rigidity of the steel structure, the span of the entire floor It can’t be too big, and it can only expand a relatively narrow circle around the core tube. That is to say, only the area outside the core tube has a view in the whole building. For the occlusion of the core tube, only the part close to the landscape in this circle area can have a sufficient view, and the other parts will be more or less blocked by the core tube.

The reason why the core tube is called the core tube is that it needs to be placed in the middle of the building so that the floor beams can expand evenly from its center. The main function of the core tube is to rely on its own stiffness to bear the load in the horizontal direction of the building. Although it also bears a part of the load in the vertical direction, the inventors found that this part of the load does not necessarily have to be at the center of the building. Effective bearing, and bearing the load in the vertical direction, the requirement for structural rigidity is much lower than that of bearing the load in the horizontal direction, so the shear wall core tube does not necessarily have to be used.

Contents of the invention

The invention provides a semi-enclosed eccentric core tube and a construction method thereof.

The technical problem to be solved is: the scenery-facing buildings have a high demand for vision, the existing pure steel structure buildings have good vision but the height is limited, the traditional frame structure buildings have extremely poor vision, and the frame-core tube structure buildings have only Very few areas have enough vision.

In order to solve the above technical problems, the present invention adopts the following technical solution: a semi-enclosed eccentric core tube, which is used to improve the rigidity of the building, the eccentric core tube is arranged at intervals on a side elevation of the building, and is composed of multiple eccentric core tubes along the eccentric The core tube is surrounded by rigid columns arranged at intervals in the circumferential direction, and two adjacent rigid columns are fixedly connected by connecting beams arranged at intervals along the vertical direction; each eccentric core tube is also equipped with Grid of steel beams fixedly connected to each rigid column.

Further, the building where the eccentric core tube is located is set near the landscape, the cross-section of the building is rectangular, a side elevation of the building close to the landscape is recorded as the facing surface, and a side elevation facing away from the landscape is recorded as the background surface; Two eccentric core tubes are set in the building where the eccentric core tube is located, and the two eccentric core tubes are respectively set at two vertical edges on the background surface of the building.

Further, the building where the eccentric core tube is located is also provided with a diagonal grid steel tube, and the diagonal grid steel tube is sandwiched between two eccentric core tubes and is in contact with the two eccentric core tubes respectively. The position shares the side wall; the cross-section of the oblique grid steel cylinder is rectangular, one side elevation of the oblique grid steel cylinder is flush with the background surface of the building and the other side elevation is flush with the facing surface of the building The floor slabs of the building are respectively fixedly connected with the eccentric core tube and the oblique grid steel tube.

Further, the cross-section of the eccentric core tube is rectangular, and the rigid columns include steel pipe concrete columns arranged at the four corners of the cross-section of the eccentric core tube, and shear wall columns arranged at other positions, and the same eccentric core tube is on the same horizontal plane The connecting beams are connected as a whole to form a steel ring beam, and the four corners of the steel ring beam are welded on the steel tube concrete column, and are wrapped by the concrete of each shear wall column.

Further, the steel beam grid and the steel ring beam are in one-to-one correspondence with the floors of the building and are flush with the corresponding floors, and the edge of the steel beam grid penetrates the concrete of the shear wall column and is fixedly connected with the steel ring beam ; The steel beam grid in the two eccentric core tubes extends outwards and is connected as a whole; each of the two eccentric core tubes has a vertical edge overlapping with a vertical edge of the diagonal grid steel tube, and each overlapping location, the eccentric core tube and the oblique grid steel tube share a steel tube concrete column.

Further, in the two side walls of the eccentric core tube perpendicular to the background surface, rigid columns are arranged at the vertical edges of the eccentric core tube.

Further, in the side wall of the eccentric core tube that is flush with the outer circumference of the building, the connecting beams share the same steel beam as the beams in the outer frame of the building.

Further, an attached tower crane is provided on the outer surface of the shear wall column of the facing surface of the eccentric core tube, and the tower body of the attached tower crane and the two steel pipe concrete columns close to the attached tower crane pass through the oblique downward extending The connection point between the tower body and the shear wall column is connected with the two steel tube concrete columns away from the attached tower crane through the diagonal brace extending obliquely downward.

A construction method for a semi-enclosed eccentric core tube, used for constructing the above-mentioned semi-enclosed eccentric core tube, the shear wall column is provided with embedded parts for connecting steel beam grids and oblique grid steel tubes ; Between the two eccentric core tubes, there is at least one concrete-filled steel tube column for the attachment of the steel beam grid;

The construction method is divided into the following sub-steps:

Step 1: Install the CFST columns at the four corners of the eccentric core tubes, and install the CFST columns between the two eccentric core tubes as the attachment point of the steel beam grid;

Step 2: Bind the reinforcement cages in the shear wall columns and weld the coupling beams to the CFST columns, and the coupling beams pass through the reinforcement cages of the shear wall columns; the coupling beams of the two eccentric core tubes are fixedly connected to each other as " The overall structure of the word "目";

Step 3: Weld the embedded parts to the connecting beams; the embedded parts have interfaces for butt joints with the ends of the steel beam grids in the eccentric core tubes and the ends of the steel beam grids between the eccentric core tubes ;

Step 4: Pour the concrete of the shear wall column;

Step 5: Install the steel beam grid, the end of the steel beam grid in the eccentric core tube is fixedly connected with the connecting beam through the embedded parts, and the end of the steel beam grid between the eccentric core tubes is connected with the The concrete-wrapped coupling beams are fixedly connected, and the coupling beams not wrapped by concrete and the steel pipe concrete columns are fixedly connected by welding, bolting, or bolt-welding connection.

Further, the construction progress of the eccentric core tube is 4 floors ahead of the diagonal grid steel cylinder, the construction progress of the diagonal grid steel cylinder is 4-6 floors ahead of the building's outer frame, and the construction progress of the building's outer frame is 3-4 floors ahead of the floor slab .

Compared with the prior art, a semi-enclosed eccentric core tube and its construction method of the present invention have the following beneficial effects:

In the present invention, by moving the core tube originally located in the center of the building to the side of the building away from the landscape, the core tube will no longer block the view of the building after the move (before the transformation, for landscapes such as sea views, the frame-core Only one side of the tube building has a better view), and at the same time, in order to overcome the impact of the core tube position on the vertical bearing capacity (after the core tube is moved, the span of the floor will increase greatly, and the existing steel beams cannot meet this requirement. span), by sandwiching a diagonal grid steel cylinder between two eccentric core cylinders (sufficient vertical bearing capacity without causing shading, but insufficient rigidity) and sharing the side wall with it, the use of diagonal grid steel The expansion of the tube is used to bear the stress position of the floor slab, so as to avoid the yielding of the floor beam at the bottom of the floor slab due to the excessive span;

In the present invention, the structure of the eccentric core tube surrounded by shear walls is changed into a structure surrounded by columns, so that there is enough viewing field inside the eccentric core tube; at the same time, through the steel beam grid Connect the two core tubes and the common wall (the eccentric core tube and the diagonal grid steel tube share the same wall at the contact position), so that the three (two core tubes and a diagonal grid steel tube) are rigidly connected as a whole, This overcomes the problem of insufficient rigidity of a single eccentric core tube or a single oblique grid steel tube (here, due to the increased number of eccentric core tubes and semi-surrounding, the cross-section of a single core tube is even less than a quarter of the core tube cross-section in conventional buildings One, but it is enough to restrain the torsion of the oblique grid steel cylinder, and at the same time, the bearing capacity of the three to the load in the horizontal direction can be added).

Description of drawings

Fig. 1 is the top view of the eccentric core cylinder among the present invention;

Fig. 2 is the top view of the eccentric core tube connected with the oblique grid steel tube;

Fig. 3 is the top view of the building that has adopted the eccentric core tube in the present invention;

Fig. 4 is the front view of the building that has adopted the eccentric core tube in the present invention;

Figure 5 is a schematic diagram of the arrangement of CFST columns. For the convenience of reading the figure, the contours of the oblique grid steel cylinders and eccentric core cylinders are marked with dotted lines in the figure; the CFST columns in Figure 2-3 cannot See, listed here separately;

Figure 6 is a schematic diagram of the installation method of the attached tower crane;

Among them, 1-concrete steel tube column, 2-shear wall column, 3-coupling beam, 4-steel beam grid, 5-attached tower crane, 51-diagonal brace, 6-bias grid steel cylinder.

Detailed ways

As shown in Figure 1, a semi-enclosed eccentric core tube is used to increase the rigidity of the building. The eccentric core tube is arranged at intervals on a side elevation of the building, and is composed of a plurality of rigid columns arranged at intervals along the circumference of the eccentric core tube. Enclosed, two adjacent rigid columns are fixedly connected by connecting beams 3 arranged at intervals along the vertical direction; each eccentric core tube is also provided with steel beams fixedly connected to the rigid columns in the eccentric core tube respectively Grid 4. Note that although the steel beam grid 4 here is available on each floor, it is actually a part of the floor beams, but its distribution density is higher than that of the rest of the floor beams, because the cross-sectional area of the eccentric core tube is small, If its distribution density is the same as that of the rest of the floor beams, there will be few grids inside.

As shown in Figure 2-4, the building where the eccentric core tube is located is set near the landscape. The cross-section of the building is rectangular. The side elevation of the building close to the landscape is recorded as the facing surface, and the side elevation facing away from the landscape is recorded as the background Two eccentric core tubes are set in the building where the eccentric core tube is located, and the two eccentric core tubes are respectively set at the two vertical edges of the background surface of the building.

Setting the eccentric core tube in this way, according to the optical principle, can minimize the area where the view is blocked.

The building where the eccentric core tube is located is also equipped with a diagonal grid steel tube 6, which is sandwiched between two eccentric core tubes and shares the side wall with the two eccentric core tubes at the contact position The cross-section of the oblique grid steel cylinder 6 is rectangular, and one side elevation of the oblique grid steel cylinder 6 is flush with the background surface of the building and the other side elevation is flush with the facing surface of the building; the floor slab of the building They are respectively fixedly connected with the eccentric core tube and the oblique grid steel tube 6.

If the oblique grid steel cylinder 6 is not set here, the span of the building cannot be too large, and the facing surface and the background surface need to be very close. In this embodiment, the cross-section of the oblique grid steel cylinder 6 is rectangular, and the oblique grid steel cylinder 6 is composed of four steel tube concrete columns 1 respectively arranged at the four vertical edges of the oblique grid steel cylinder 6 and It is surrounded by oblique grids set at four side facades. Each of the two eccentric core tubes has a vertical edge overlapping with a vertical edge of the diagonal grid steel cylinder 6, and at each overlapping position, the eccentric core tube and the diagonal grid steel cylinder 6 share a steel pipe concrete column 1. In the oblique grid steel cylinder 6, connectors are respectively provided at the crossing points of the rods, and a plurality of connectors protrude outward from the crossing point of the rods, respectively corresponding to each rod at the crossing point. The structure of the section steel section, the end of the protruding section steel section has a docking port for connecting with the corresponding rod; when the oblique grid steel cylinder 6 is built, the following methods are used to control the position and posture of the connector: using the total station The instrument establishes a coordinate control network. Three coordinate control points are set for each docking interface of the connector (three points determine a plane, that is, the docking surface). The connector adjusts its position and posture during hoisting, so that the actual coordinate control points The coordinates are consistent with the set coordinates. After the connector is installed, use the total station to check the coordinate control points again. The connector here is equivalent to the structure formed by cutting a circle around the intersection point of the rods of the oblique grid steel cylinder 6. According to the different intersection points, the connector here is mainly divided into three shapes, which are respectively arranged at the bottom and The "Y" shape (that is, the initiator) connected to the reserved interface on the foundation, the "long" shape set at the four corners of the diagonal grid steel cylinder 6 (the vertical side of the "long" character is a diagonal grid The steel tube concrete column 1) at the four corners of steel cylinder 6, and the "meter" font that is arranged on the remaining positions. During construction, according to the order of one layer of rods, one layer of connectors, another layer of rods, and another layer of connectors... the oblique grid steel cylinder 6 is built layer by layer and fixedly connected with the eccentric core tube.

The cross-section of the eccentric core tube is rectangular, as shown in Figure 5. The rigid columns include the CFST columns 1 set at the four corners of the cross-section of the eccentric core tube, and the shear wall columns 2 set at the other positions. The same eccentric core tube is placed in the same The connecting beams 3 on the horizontal plane are connected together to form a steel ring beam, and the four corners of the steel ring beam are welded on the steel tube concrete column 1 and wrapped by the concrete of each shear wall column 2 .

The shear wall column 2 here is actually a very narrow reinforced concrete shear wall, its width usually does not exceed five times the thickness, and the maximum does not exceed 10 times the thickness (on the background surface), and the width direction is along the connecting beam 3 The extension direction is set, so it is called column here. The rigid columns here can also all be steel tube concrete columns 1, but this is not easy to connect, because welding is more troublesome than burying in concrete after all. Here, the shear wall column 2 is selected to form the eccentric core tube. In addition to the advantages of easy connection mentioned above, there is another point that the integral climbing formwork can be used for rapid pouring in batches. Although the eccentric core tube here is not a core tube, there is also a steel beam grid 4 integrated with the shear wall like the conventional shear wall core tube (the layout density of the other floor beams is higher than that of the rest of the floor beams). high, and the grid inside is a plurality of square grids of different sizes). Since the shear wall column 2 around the eccentric core tube is actually a structure similar to a reinforced concrete column, such a slender reinforced concrete column is unstable. The wall studs 2 are all connected together to enhance stability.

The steel beam grid 4 and the steel ring beam are in one-to-one correspondence with the floors of the building and are flush with the corresponding floors, and the edge of the steel beam grid 4 penetrates the concrete of the shear wall column 2 and is fixedly connected with the steel ring beam; The steel beam grid 4 in the two eccentric core tubes extends outward and is connected as a whole; each of the two eccentric core tubes has a vertical edge overlapping with a vertical edge of the diagonal grid steel tube 6, and each In the overlapping position, the eccentric core tube and the oblique grid steel tube 6 share a steel tube concrete column 1 . The steel tube concrete column 1 is shared, so that the eccentric core tube and the oblique grid steel tube 6 are connected more closely.

In the two side walls of each eccentric core tube perpendicular to the background surface, the rigid column is arranged at the vertical edge position of the eccentric core tube. In this way, a very wide door is left on the two side walls, which can conveniently exchange construction materials with the outside world. At the same time, springboards can be laid on the high-density steel beams inside and between the two eccentric core tubes, which become a carrier for personnel and construction. A temporary construction platform for materials, and the above-mentioned door is located at the end of this platform.

In the side wall of the eccentric core tube that is flush with the outer circumference of the building, the connecting beam 3 shares the same steel beam as the beams in the outer frame of the building. That is to say, the connecting beam 3 here is actually a steel beam in the outer frame of the building, and its cross section is larger than the connecting beam 3 in other places, so there is no need to additionally arrange the connecting beam 3 .

As shown in Figure 6, an attached tower crane 5 is installed on the outer surface of the shear wall column 2 on the view side of the eccentric core tube. The diagonal bracing 51 extending downward is connected, and the connection point between the tower body and the shear wall column 2 is connected with the two steel tube concrete columns 1 away from the attached tower crane 5 through the diagonal bracing 51 extending obliquely downward.

For the eccentric core tube, the side of the eccentric core tube needs to be equipped with an attached tower crane 5 as a construction tool like a conventional shear wall core tube. However, since it is not closed, it cannot effectively bear the attached tower crane 5. The concrete-filled steel tube columns 1 are set and connected with diagonal braces 51 .

A construction method for a semi-enclosed eccentric core tube, which is used to construct the above-mentioned semi-enclosed eccentric core tube. The shear wall column 2 is provided with a pre-embedded structure for connecting the steel beam grid 4 and the oblique grid steel tube 6. parts; between the two eccentric core tubes, there is at least one concrete filled steel tube column 1 for the steel beam grid 4 to be attached;

The construction method is divided into the following sub-steps:

Step 1: As shown in Figure 5, install the CFST column 1 at the four corners of the eccentric core tube, and install the CFST column 1 used as the attachment point of the steel beam grid 4 between the two eccentric core tubes;

Since the CFST column 1 is also a rigid column and can be installed quickly, whether it is the CFST column 1 at the four corners of the oblique grid steel cylinder 6 or the CFST column 1 at the four corners of the eccentric core cylinder, it needs to be installed first. Thereby providing a precise installation location for the installation of other components.

Step 2: Bind the reinforcement cages in the shear wall columns 2 and weld the coupling beams 3 on the steel pipe concrete columns 1, and the coupling beams 3 pass through the reinforcement cages of the shear wall columns 2; the coupling beams of the two eccentric core tubes 3 The overall structure is fixedly connected to each other in the shape of "me"; the connecting beams 3 are connected as a whole, which has a better stabilizing effect on the slender columns in the eccentric core tube, and can also be used as a diagonal grid steel tube 6. Floor beams , The use of the outer frame.

Step 3: Weld the embedded parts to the connecting beam 3; the embedded parts have the ends for the steel beam grid 4 in the eccentric core tube and the ends of the steel beam grid 4 between the eccentric core tubes Butt joints; these joints are positioned flush with the outer surface of the concrete, which can be butt-connected with the ends of the steel beams to be installed later, and will not block the climbing formwork during concrete pouring. Of course, if the climbing formwork has the function of withdrawing formwork, it is also possible to leave openings for these embedded parts on the formwork of the climbing formwork, so as to allow the embedded parts to protrude out of the concrete.

Step 4: Pour the concrete for the shear wall column 2.

Step 5: Install the steel beam grid 4, the end of the steel beam grid 4 in the eccentric core tube is fixedly connected with the connecting beam 3 through the embedded parts, and the end of the steel beam grid 4 between the eccentric core tubes is fixed through the pre-embedded parts. The embedded part is fixedly connected with the concrete-wrapped coupling beam 3, and is fixedly connected with the unconcrete-wrapped coupling beam 3 and the steel tube concrete column 1 by means of welding, bolting, or bolt-welding connection.

In this embodiment, the concrete of the shear wall column 2 is poured with climbing formwork, so step 5 is carried out after step 4, so as not to affect the movement of the climbing formwork. If the concrete is not poured with climbing formwork, steps 4 and 5 can be exchanged, thereby eliminating The installation of embedded parts.

The construction progress of the eccentric core tube is 64 floors ahead of the oblique grid steel cylinder, the construction progress of the oblique grid steel cylinder 6 is 4-6 floors ahead of the building's outer frame, and the construction progress of the building's outer frame is 3-4 floors ahead of the floor slab. The "floor" here refers to the floor, that is, the height of each section of each area is an integer multiple of the floor height, and the leading construction area leads to an integer multiple of the floor height.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (10)

1. A semi-enclosed eccentric core barrel for enhancing the rigidity of a building, characterized by: the eccentric core barrel is arranged at one side vertical face of the building at intervals and is formed by enclosing a plurality of rigid columns arranged at intervals along the circumferential direction of the eccentric core barrel, and two adjacent rigid columns are fixedly connected through connecting beams (3) arranged at intervals along the vertical direction; and a steel beam grid (4) fixedly connected with each rigid column in the eccentric core cylinder is also arranged in each eccentric core cylinder.

2. A semi-enclosed eccentric core barrel according to claim 1, characterized in that: the building where the eccentric core barrel is located is arranged near the landscape, the cross section of the building is rectangular, one side elevation of the building, which is close to the landscape, is marked as a landscape surface, and one side elevation of the building, which is far away from the landscape, is marked as a background surface; two eccentric core cylinders are arranged in a building where the eccentric core cylinders are located, and the two eccentric core cylinders are respectively arranged at two vertical edges of a building background surface.

3. A half-surrounded eccentric core barrel according to claim 2, wherein: the building where the eccentric core cylinders are located is also provided with oblique grid steel cylinders (6), and the oblique grid steel cylinders (6) are clamped between the two eccentric core cylinders and share the side walls with the two eccentric core cylinders at the contact positions respectively; the cross section of the oblique grid steel cylinder (6) is rectangular, one side elevation of the oblique grid steel cylinder (6) is flush with the background surface of the building, and the other side elevation is flush with the landscape surface of the building; and the floor slab of the building is fixedly connected with the eccentric core cylinder and the oblique grid steel cylinder (6) respectively.

4. A semi-enclosed eccentric core barrel according to claim 3, characterized in that: the cross section of the eccentric core tube is rectangular, the rigid column comprises concrete-filled steel tube columns (1) arranged at four corners of the cross section of the eccentric core tube and shear wall columns (2) arranged at other positions, the connecting beams (3) of the same eccentric core tube on the same horizontal plane are connected into a whole to form a steel ring beam, and the four corners of the steel ring beam are welded on the concrete-filled steel tube columns (1) and are wrapped by concrete of the shear wall columns (2).

5. A semi-enclosed eccentric core barrel according to claim 4, characterized in that: the steel beam grids (4) and the steel ring beams are in one-to-one correspondence with each floor slab of the building and are flush with the corresponding floor slabs, and the edges of the steel beam grids (4) penetrate through the concrete of the shear wall columns (2) and then are fixedly connected with the steel ring beams; the steel beam grids (4) in the two eccentric core cylinders extend outwards and are connected into a whole; the two eccentric core cylinders are respectively provided with a vertical edge which is overlapped with a vertical edge of the oblique crossing grid steel cylinder (6), and the eccentric core cylinder and the oblique crossing grid steel cylinder (6) share one steel pipe concrete column (1) at each overlapped position.

6. A semi-enclosed eccentric core barrel according to claim 4, characterized in that: the eccentric core cylinder is perpendicular to two side walls of the background surface, and the rigid column is arranged at the vertical edge of the eccentric core cylinder.

7. A semi-enclosed eccentric core barrel according to claim 5, wherein: in the side wall of eccentric core section of thick bamboo and building periphery parallel and level, even roof beam (3) and the same girder steel of roof beam sharing in the outer frame of building.

8. A semi-enclosed eccentric core barrel according to claim 4, characterized in that: be provided with on shear force wall post (2) the lateral surface of the scene face of eccentric core section of thick bamboo and adhere to formula tower crane (5), the body of the tower of adhering to formula tower crane (5) is connected through bracing (51) of extending to one side down with two concrete filled steel tubular columns (1) that are close to formula tower crane (5), and the body of the tower is connected through bracing (51) of extending to one side down with two concrete filled steel tubular columns (1) of keeping away from attached to formula tower crane (5) with the junction of shear force wall post (2).

9. A construction method of a semi-surrounding eccentric core barrel is characterized by comprising the following steps: for constructing a semi-surrounding eccentric core barrel as claimed in claim 5, the shear wall column (2) having embedments provided therein for connecting a steel beam grid (4) and an oblique grid steel barrel (6); at least one steel pipe concrete column (1) for attaching the steel beam grids (4) is arranged between the two eccentric core cylinders;

the construction method comprises the following steps:

the method comprises the following steps: installing the steel pipe concrete columns (1) at four corners of the eccentric core barrel, and installing the steel pipe concrete columns (1) used as attachment points of the steel beam grids (4) between the two eccentric core barrels;

step two: binding reinforcement cages in the shear wall columns (2) and welding the connecting beams (3) on the concrete-filled steel tubular columns (1), wherein the connecting beams (3) penetrate through the reinforcement cages of the shear wall columns (2); the connecting beams (3) of the two eccentric core cylinders are fixedly connected with each other to form a whole structure in a shape like the Chinese character 'mu';

step three: welding the embedded part to the connecting beam (3); the embedded part is provided with interfaces for butting with the end part of the steel beam grids (4) in the eccentric core barrel and the end part of the steel beam grids (4) between the eccentric core barrels;

step four: pouring concrete of the shear wall column (2);

step five: and steel beam grids (4) are installed, the end parts of the steel beam grids (4) in the eccentric core cylinders are fixedly connected with the connecting beams (3) through embedded parts, and the end parts of the steel beam grids (4) between the eccentric core cylinders are fixedly connected with the connecting beams (3) wrapped by the concrete through the embedded parts, and are fixedly connected with the connecting beams (3) not wrapped by the concrete and the steel pipe concrete columns (1) in a welding, bolting or bolt-welding connection mode.

10. A method of constructing a semi-enclosed eccentric core barrel according to claim 9, characterised in that: the construction progress of the eccentric core cylinder leads 4 layers of the oblique grid steel cylinders (6), the construction progress of the oblique grid steel cylinders (6) leads 4-6 layers of the outer building frame, and the construction progress of the outer building frame leads 3-4 layers of the floor slab.

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