Frame tube The difference between the frame core tube, the core tube structure of the core tube

Not a concept :

Frame tube: The frame tube is a kind of cylinder in a cylinder, which is composed of two cylinders, inside and outside. The outer cylinder is a frame tube composed of a dense column frame, and the inner cylinder is a structure composed of concrete shear wall cylinders, generally, the spacing of the outer cylinder frame columns is about 4 meters;

Frame-core tube: The perimeter is a structure composed of a sparse column frame and a shear wall cylinder, and in general, the spacing of the peripheral frame columns is about 8 meters.

Frame tube: The frame tube is a kind of cylinder in a cylinder, which is composed of two cylinders, inside and outside. The outer cylinder is a frame tube composed of a dense column frame, and the inner cylinder is a concrete shear wall.

The structure composed of the cylinder, in general, the spacing of the outer cylinder frame columns is about 4 meters;

Frame - core tube.

The perimeter is a structure composed of a sparse column frame and a shear wall cylinder, and in general, the spacing of the peripheral frame columns is about 8 meters.

1. Definition: It refers to a high-rise building structure composed of a core tube and a peripheral sparse column frame.

The characteristics and advantages are: it can give full play to the advantages of the two structural systems of frame and cylinder.

2: frame tube: in the frame structure, set up part of the shear wall, so that the frame and the shear wall are combined, learn from each other's strengths, and jointly resist the horizontal load, which is the frame shear wall structure system.

If the shear wall is arranged into a cylinder, the vertical box-shaped section that encloses the thin arm cylinder of the vertical box-shaped section and the dense column frame is formed, can be called the frame cylinder structure system. It has high anti-lateral stiffness and is widely used in super high-rise buildings. The overall building is mainly burdened by several large frames, and the walls in the unit do not bear the load, and the real active building, the walls can be changed at will, and even the entire floor can be spaced at will.

This is the most advanced structure available now.

The core tube is to prepare for the spring equinox in the first part of the building, and the core tube is enclosed by the elevator shaft, staircase, ventilation shaft, cable well, public toilet and some equipment rooms.

It forms an outer frame inner tube structure with the outer frame, which is poured with reinforced concrete.

This structure is very conducive to structural stress and has excellent seismic resistance. It is the mainstream structural form widely used in super high-rise buildings in the world.

The core tube structure of the rental wax is a high-rise building structure. The periphery is a frame sliding stress system composed of beams and columns, while the middle is a cylinder. Because the cylinder is in the middle, it is called the core tube, also known as the "frame-core tube structure".

1) The core tube is the main lateral force resistance part in the frame-core tube structure, and the bearing capacity and ductility requirements should be higher, and various structural measures to improve the ductility should be taken during the earthquake. The core tube should run through the full height of the building. The width of the core tube should not be less than 1 12 of the total height of the cylinder, and when the cylinder structure is provided with the corner tube, the shear wall or the member that enhances the overall stiffness of the structure, the width of the core tube can be appropriately reduced.

2) The core tube should have good integrity, and the wall limbs should be evenly and symmetrically arranged. When unavoidable, the distance from the inner wall of the cylinder corner to the opening should not be less than 500mm and the cross-sectional thickness of the opening wall. In the seismic design, the ductility of the connecting beam of the core tube should be improved by configuring cross concealed braces, setting horizontal joints or reducing the height-width ratio of the beam section.

In the case of high ductility requirements of the core tube, the steel-reinforced concrete core tube can be used, that is, the vertical steel skeleton is arranged at the place where the vertical and horizontal walls intersect, and the steel-skeleton dark beam is arranged at the floor elevation, and the steel frame formed by the steel skeleton can improve the bearing capacity and seismic performance of the core tube.

3) Frame beams must be arranged between the perimeter columns of the frame-core tube structure. The frame-core tube structure has no restrictions on the shape, and the frame column spacing is large and the layout is flexible, which is conducive to the diversification of the building façade. The structural layout should be as regular and symmetrical as possible to reduce the torsional effect, the mass distribution should be uniform, and the inner cylinder should be centered as much as possible.

The distance between the core tube and the outer column is generally l0-12m, if the distance is large, it is necessary to set up another inner column, or use prestressed concrete floor, otherwise the floor beam is too large, which is not conducive to reducing the floor height. The stiffness along the vertical structure should be continuous to avoid sudden changes in stiffness.

4) The internal force distribution of the frame-core tube structure is characterized by the fact that the shear force and overturning moment borne by the frame are small. In the seismic design, in order to realize the double lateral force resistance structural system, the cross-section of the outer frame member should not be too small for the reinforced concrete frame-core tube structure, and the shear force and bending moment borne by the frame should be adjusted and increased. For steel-concrete mixed structures, the layer shear force of the outer frame is required to reach (20-25%) of the total layer shear force of the car width.

5) The wind-resistant structure in the non-** area is advantageous to strengthen the lateral stiffness of the structure with outrigger, and the seismic structure should be carefully compared with the scheme, and it is not necessary to set the outrigger when the outrigger can meet the lateral shift requirements, and when the outrigger must be set, the internal force mutation of the frame column and the core tube must be dealt with, and the potential danger of forming a weak layer such as the plastic hinge or shear wall failure of the column should be avoided.

6) For the floor of the frame Li Liang frame - core tube structure, it is advisable to choose the floor structure form with small structural height, strong integrity, light structural weight and conducive to construction. Therefore, it is advisable to choose cast-in-situ beam slab floor, and can also choose ribbed floor slab, unbonded prestressed concrete slab, and superimposed floor slab of prefabricated prestressed sheet and cast-in-place layer. When the middle distance between the inner cylinder and the outer frame is greater than 8m, the unbonded prestressed concrete floor should be preferred.

The core tube is commonly known as the part of the building that is made of steel and concrete! Generally put the elevator and stairs inside! In order to resist earthquake and pressure, it is generally set in the middle position! It is the most important and sturdy part of the whole building!

1) The frame layout is in various forms, which can be square, rectangular, round or other shapes; The structure should be arranged as regularly as possible, and the plane stiffness should be uniform and symmetrical to reduce the torsional effect. The mass is evenly distributed, and the inner cylinder is as centered as possible.

2) In the reinforced concrete frame core tube structure, the cross-section of the outer frame structure should not be too small, and the shear force and bending moment borne by the frame need to be adjusted and increased according to the requirements of the code and regulations. In the mixed structure, if the reinforced concrete and concrete-filled steel tube columns are used, it is easier to meet the requirements of the double lateral force resistance system. If the outer steel frame is used, its total height should not be too large.

3) The steel frame is arranged at the intersection of the vertical and horizontal walls, and the steel frame dark beam is arranged at the floor elevation, which can form a small steel frame to improve the bearing capacity and seismic performance of the core tube.

4) The distance between the core tube and the outer column should be 10-12 meters. If the distance is large, additional internal columns or prestressed concrete floors are required. Otherwise, the floor beam is too large, which is not conducive to reducing the floor height.

5) Generally, the floor girder should be arranged. In the layout of the floor, it is necessary to pay attention to the centralized transmission of the vertical load to the large column to avoid the tensile force of the column (the tensile force of the column is greater than the downward pressure of the gravity load under the action of horizontal load).

Dear, according to your description, the frame structure and the frame tube structure are not the same. Here's a brief look at the differences between the two. Frame structure refers to the frame structure composed of transverse tremors and longitudinal members in buildings or engineering facilities.

These elements are connected to each other to form a frame cover, which is usually made of materials such as steel or concrete, and has a load-bearing capacity. Frame structures are often used in engineering facilities such as high-rise buildings, bridges, and large factories. Frame-tube resistant structures refer to structures consisting of one or more coils of cylindrical components, which are usually used to make buildings such as large containers, storage tanks, tunnels, and some bridges.

The frame-tube structure is usually made of materials such as steel or reinforced concrete, which has a large bearing capacity and good seismic performance. To sum up, frame structure and frame tube structure are two different structural forms, which are suitable for different buildings or engineering facilities.