What are the advantages and disadvantages of the frame structure

Advantages: 1. It has the advantage of being able to flexibly match the layout of the building, which is conducive to arranging the building structure that requires a larger space.

The beams and columns of the frame structure are easy to be standardized and stereotyped, and it is convenient to adopt the assembly integral structure to shorten the construction period.

2. When the cast-in-place concrete frame is adopted, the integrity and stiffness of the structure are good, and the design and treatment can also achieve a better seismic effect, and the beam or column can be poured into various required cross-sectional shapes.

Disadvantages: 1. Stress concentration of frame joints.

Significantly, the lateral stiffness of the frame structure is small, which is a flexible structural frame, and under the strong action, the horizontal displacement of the structure is large, which is easy to cause serious non-structural damage.

2. There are many times of hoisting, large workload of joints, many processes, waste of manpower, and the construction is greatly affected by the season and environment; It is not suitable for high-rise buildings.

The frame is a rod structure composed of beams and columns, which has low bearing capacity and stiffness.

Merit. The main advantages of frame architecture: flexible space separation, light weight, and material saving; It has the advantage of being able to flexibly match the layout of the building, which is conducive to arranging the building structure that requires a larger space; The beams and columns of the frame structure are easy to be standardized and stereotyped, and it is convenient to adopt the assembly integral structure to shorten the construction period. When the cast-in-place concrete frame is adopted, the integrity and stiffness of the structure are better, and the design treatment can also achieve better seismic effect, and the beam or column can be poured into various required cross-sectional shapes.

Shortcoming. The disadvantages of the frame structure system are as follows: the stress concentration of the frame joint is significant; The lateral stiffness of the frame structure is small, it is a flexible structural frame, under the strong action, the horizontal displacement of the structure is larger, it is easy to cause serious non-structural damage, the number of hoisting is more, the joint workload is large, the process is more, the manpower is wasted, and the construction is greatly affected by the season and the environment; Not suitable for the construction of high-rise buildings, the frame is a rod structure composed of beams and columns, and its bearing capacity and stiffness are low, especially in the horizontal direction (even if the cast-in-place floor and beams can be considered to work together to improve the horizontal stiffness of the floor, it is limited).

Its stress characteristics are similar to the vertical cantilever shear beam, its overall horizontal displacement is large and small, but relative to each floor, the interstory deformation is small and large, how to improve the lateral stiffness of the frame and control the structural lateral movement is an important factor during the design, for the reinforced concrete frame, when the height is large and the number of layers is quite large, not only the axial force of the columns at the bottom of the structure is very large, but also the bending moment and the overall lateral movement of the beam and column generated by the horizontal load also increase significantly, resulting in the increase of cross-section size and reinforcement, The layout and space treatment of the building may bring difficulties, affect the rational use of building space, and tend to be unreasonable in terms of material consumption and cost, so it is generally suitable for the construction of houses with no more than 15 floors.

The frame structure is limited by a multi-storey building.

The main advantages of frame construction:

The space separation is flexible and the weight is light, which is conducive to earthquake resistance and material saving; It has the advantage of being able to flexibly match the layout of the building, which is conducive to arranging the building structure that requires a larger space; The beams and columns of the frame structure are easy to be standardized and stereotyped, and it is convenient to adopt the assembly integral structure to shorten the construction period. When the cast-in-place concrete frame is adopted, the integrity and stiffness of the structure are better, and the design treatment can also achieve better seismic effect, and the beam or column can be poured into various required cross-sectional shapes.

The disadvantages of the frame structure system are:

The stress concentration of frame joints is significant. The lateral stiffness of the frame structure is small, it is a flexible structural frame, and under the strong action, the horizontal displacement of the structure is large, which is easy to cause serious non-structural breakage; The amount of steel and cement is large, the total number of components is large, the number of hoisting is large, the joint workload is large, the process is many, the manpower is wasted, and the construction is greatly affected by the season and the environment; It is not suitable for the construction of high-rise buildings, the frame is a rod structure composed of beams and columns, and its bearing capacity and stiffness are low, especially in the horizontal direction (even if the cast-in-place floor and the beam can be considered to work together to improve the horizontal stiffness of the floor, but it is also limited), its force characteristics are similar to the vertical cantilever shear beam, its overall horizontal displacement is large and small, but relative to each floor, the interstory deformation is small and large, how to improve the lateral stiffness of the frame and control the structural lateral movement is an important factor in the design, for the reinforced concrete frameWhen the height is large, the number of floors is quite many, not only the axial force of the column at the bottom of the structure is very large, but also the bending moment and the overall lateral displacement of the beam and column generated by the horizontal load also increase significantly, thereby leading to the increase of cross-sectional size and reinforcement, the building plane layout and space treatment may bring difficulties, affect the rational use of building space, and in terms of material consumption and cost, it also tends to be unreasonable, so it is generally suitable for building a house of no more than 15 floors.

Multi, high-rise buildings.

There are the following structural systems:1Frame structure.

2.Shear wall structure.

3.Frame-shear wall structure 4Frame-cylinder structure 5Frame tube structure 6Cylinder-in-cylinder structure 7Multi-barrel structure 8Suspension structure 9Giant frame structure 10Giant truss structure.

11.Rigid beams or rigid truss structures.

The advantages and disadvantages of the frame structure are as follows: Advantages 1Space big 2

Good ductility 3The cost is slightly lower. Cons 1

The bearing capacity is low by 2Low stiffness (flexible structure) 3Side shift is larger than 4

The damage of non-structural components is heavy, and the maintenance cost is high5The secondary is complex on the inside6Lack of a second line of defense 7

Buildings with 8 floors in the earthquake zone should not be used, and the effect is significant. It should be pointed out that among the shortcomings of the frame structure, the fatal disadvantage is the lack of a second line of defense, which will significantly reduce the seismic resistance of the structure. Therefore, more attention should be paid to the selection of structures.

The advantages of shear wall structure are large lateral stiffness and small deformation, so there is less damage to non-structural components, and secondary disasters such as water outage, power outage, and fire are missing.

Small. The secondary internal forces and p- effect of the structure are not significant, and the problems of elastoplastic stability are not prominent. After reasonable design and appropriate component measures, ductility can meet the requirements of the specification, even if the wall is seriously cracked and the strength is attenuated, its bearing capacity is rarely reduced to below the critical bearing capacity required for load-bearing, so the seismic capacity is strong, the seismic damage is light, and there are only a few collapses.

The disadvantage is that the plane layout is not flexible enough, the large room is limited, the structure is self-weighted, the stiffness is large, the cycle is short, and the force is large, and the method of adjusting the stiffness can be used to reduce the above shortcomings.

Advantages of frame-shear wall structure 1Small side shift (compared to the same frame) 2Reduce the burden on the node3

Increase the number of times of superstatic stating by 4Ensure the uniform development of the plastic hinge 5The lateral shift between the layers tends to be uniform6

The shear force of each layer of the frame part tends to be uniform. The disadvantage is that the horizontal stiffness is uneven.

Advantages of cylinder structure 1The bearing capacity is high by 2The spatial stiffness is large 3

Good seismic and wind resistance4It is suitable for high-rise buildings with more than 20 floors and many floors. Cons 1

The amount of calculation is large, and it must be calculated 2Computationally complex 3The construction is difficult.

(1) Advantages of frame structure.

1. The space separation is sensitive, and the weight is light, which is conducive to earthquake resistance and material saving; It has the advantage of being able to arrange the building plan more sensitively, and is conducive to organizing the building structure that requires a large space;

2. When the cast-in-place concrete frame is selected, the integrity and stiffness of the structure are good, and the planning and treatment can also achieve a better seismic effect, and the beam or column can be poured into a cross-sectional shape of various needs.

3. Strong seismic resistance is the biggest feature of the frame structure. Because the integrity and stiffness of the structure are good, the joint part can resolve the infinite torsion that occurs, and the planned frame structure can also achieve a better seismic effect.

4. The beams and column components are easy to be standardized and stereotyped, which can meet the requirements of civil air defense and fire protection, so that the layout of water, electricity and heating can be carried out effectively, which can greatly shorten the construction period and reduce expenses.

2) Shortcomings of the frame structure.

1. The lateral stiffness of the frame structure is small, it is a flexible structural frame, and under the strong action, the horizontal displacement of the structure is large, which is easy to cause serious non-structural damage;

2. There are many times of hoisting, large workload of joints, many processes, waste of manpower, and the construction is greatly affected by the season and environment;

3. It is not suitable for the construction of high-rise buildings, the frame is a rod structure composed of beams and columns, and its bearing capacity and stiffness are low, especially in the horizontal direction, and its stress characteristics are similar to those of vertical cantilever shear beams, and its overall horizontal displacement is large and small;

4. It brings difficulties to the layout and space processing of the building, affects the rational use of the building space, and tends to be unreasonable in terms of material consumption and cost, so it is generally suitable for the construction of houses with no more than 15 floors.

Advantages: (1) Light weight: the weight of the brick-concrete structure is 1500 kg square meters; The self-weight of the frame structure such as the use of light plate (aerated concrete partition wall, light steel keel partition wall, etc.) is 400 kg 600 kg square meters, which is only 1 3 of the brick-concrete structure.

2) Flexible room layout: The load-bearing structure of the frame structure is the frame itself, and the wall panel only plays the role of enclosure and separation, so the layout is more flexible.

3) Increase the effective area: the frame structure wall is thinner than the brick-concrete structure, which relatively increases the usable area of the house.

Disadvantages: (1) The amount of steel is about 30% higher than that of brick-concrete structure, and the cost is high compared with brick-concrete structure.

2) The cross-sectional size of some columns is too large, which will protrude out of the wall and affect the appearance.

The advantage of the frame structure is that the seismic performance is particularly strong, and the standard degree of construction is relatively high, and its structural integrity is also relatively good, and its components are also more convenient to shape. The use of frame structure for design, the construction time is shorter, and the construction cost can be reduced. In addition, whether it is a building or a self-built house, the frame structure must be built before construction can begin.

There are also many types of house structures, such as concrete structures, frame structures and brick-concrete structures, etc., especially now many self-built houses, either adopt brick-concrete structures or frame structures. If it is a frame structure, what are the advantages and disadvantages, and what are the differences between it and brick-concrete structure?

First, the advantages of the frame structure.

1. If the frame structure is adopted, the weight itself is relatively light, and the length of the building layout can be effectively used during construction, and a larger space can be obtained at the same time.

2. When the house with this frame structure is poured, the integrity and strength are relatively good, if the planning is reasonable, it can achieve a good seismic effect, and strong seismic resistance is one of its biggest highlights.

3. As long as the construction is reasonable and the quality of the project is ensured, it can meet the needs of fire protection. In addition, in the whole construction process, the construction period can be greatly shortened, and the cost can be effectively reduced.

Second, the shortcomings of the frame structure.

1. The side stiffness of the frame structure is still relatively small, and if a strong ** occurs, such as reaching the level of the mausoleum, it may lead to serious damage to the non-structure.

2. In the process of construction, bricks need to be hung, and the number of times is relatively large, and it will be affected by the construction environment. Ulnar bucket.

3. This frame structure is not suitable for high-rise buildings, the higher the house is built, its bearing capacity and rigidity will be reduced, so it is not recommended to build a house with more than 15 floors.

3. The difference between frame structure and brick-concrete structure.

1. The load-bearing methods of the two are different, if the building uses a frame structure, then its main load-bearing structure is the column and beam; On the other hand, if you choose a brick-concrete structure, then its main load-bearing is the floor slab and the wall.

2. The structure of the two is different, the strength and stiffness of the frame structure are just right, it is a flexible structure, and its anti-deformation ability is relatively small.

3. The number of floors of the two buildings is different, the frame structure can be built to 15 floors, and some can be built to about 18 or 20 floors, but the brick-concrete structure is limited, generally speaking, it can be built up to 6 floors.

Summary: The above are the advantages and disadvantages of the frame structure, and what are the differences between the frame structure and the brick-concrete structure, in fact, the frame structure has more advantages than the brick-concrete structure in terms of seismic effect and the stability of the house.

2. Strong seismic resistance. When the frame structure house is built, the integrity and strength are strong, and there is good stability and earthquake resistance. 3. The construction period can be shortened.

The frame structure is easy and fast to build, which can effectively control or even shorten the construction period and reduce costs. Disadvantages of frame structure: 1. It is greatly affected by the environment.

The frame structure needs to be hung more times in the construction, and the more it is dressed, the more susceptible it is to the environment. 2. Not suitable for high-rise. The construction of frame structures is not suitable for high-rise buildings, because the bearing capacity is not large, and the higher the house, the greater the danger.