What are the buildings with frame structures?

Classification by building structure

The main difference between frame shear structure and frame structure is the addition of shear walls. The vertical stiffness of the frame structure is not strong. The frame of high-rise or super high-rise buildings This is especially true for structural buildings! In order to solve this problem, shear walls are used. You can go to the frame structure.

Frame structure housing refers to using reinforced concrete poured into load-bearing beams and columns, and then using prefabricated reinforced concrete. Residences made of air concrete, expanded perlite, pumice, vermiculite, pottery and other light plate partition walls. It is suitable for large-scale industrial construction, with high efficiency and good project quality.

The frame structure is composed of beams and columns, and the member cross-section is small, so the load-bearing capacity and stiffness of the frame structure are low. Its stress characteristics are similar to vertical cantilever shear beams. The higher the floor, the horizontal The slower the displacement, the high-rise frame will bear a large horizontal force in both vertical and horizontal directions. At this time, the cast-in-place floor also works as a beam, and the role of assembling the integral floor is not considered. The frame structure The wall is a filling wall, which plays the role of enclosure and separation. The characteristic of the frame structure is that it can provide flexible use space for the building, but its seismic performance is poor.

1. Frame-shear wall structure, formerly known as frame-shear structure, is a combination of frame structure and shear wall structure, absorbing the strengths of each. It can not only provide a larger space for building layout, but also have Good lateral force resistance performance. The shear walls in the frame-shear structure can be set up alone, or they can be used in elevator shafts, stairwells, pipe wells and other walls. Therefore, this structure has been widely used in various types of housing construction.

2. The deformation of the frame shear structure is shear bending type. As we all know, the deformation of frame structures is shear type, with small relative deformation between upper layers and large relative deformation between lower layers. The deformation of the shear wall structure is curved. The relative deformation between the upper layers is large and the relative deformation between the lower layers is small. For the frame-shear structure, due to the coordinated deformation of the two structures, bending-shear deformation is formed, which reduces the relative displacement ratio between the joints and the vertex displacement ratio, and improves the lateral stiffness of the structure.

3. Horizontal loads are mainly carried by shear walls. From the perspective of stress characteristics, since the lateral stiffness of the shear wall in the frame-shear structure is much greater than the lateral stiffness of the frame, under the action of horizontal loads, generally, more than 80% of the load is borne by the shear wall. Therefore, the floor shear force distributed by the frame structure under the action of horizontal load is more evenly distributed along the height, and the bending moments of beams and columns on each floor are relatively close, which is beneficial to reducing beam and column specifications and facilitating construction.