SU975933A1 - Connection assembly between floor panel cantilever part to rigidity core of earthquake-proof building - Google Patents

Description

The invention relates to the construction and can be used when performing nodal connection of the core stiffness and floor slab seismic multi-storey building.

Known nodal connection of the floor slab seismic multi-storey building with a core of rigidity, including shock absorbers, made in the form of a combined friction and dynamic spring dampers [1].

The closest technical solution is the nodal connection of the floor slab with the core of seismic resistance of the building, which has consoles around the perimeter, including interconnected embedded metal part on the bottom surface of the plate and the metal part of the console of the core of rigidity, and G23 is formed between the last end of the console slab.

A disadvantage of the known solutions is that the design of the known nodal joints of floor slabs with the core of rigidity by means of dampers is a complex system-mechanisms, the use of which in construction encounters considerable difficulties.

With the purpose of imaging is to increase the seismic energy absorption ^

fluctuations.

The goal is achieved by the fact that in the node joining the console of the floor plate

10 with seismic stiffness core

buildings that have consoles around the perimeter, which include the interlocked metal part on the bottom surface of the slab and the metal part of the rigidity core,

15 between which and the end of the ceiling slab there is a technological gap, which contact surfaces of the foundation plate of the ceiling slab and the core rigidity console, which are inclined with a slope directed toward the floor slab.

Figure 1 shows the nodal connection in the plan; figure 2 - section aa in figure 1 ;. on fig.Z - node I on

25 figure 1.

The node connection of the seismic resistance of a multi-storey building includes the cantilevers of the slab1 of the overlap, contacting with the surface 2 of the embedded part, and

35 core 3 rigidity with the console 4. And

3

975933

four

cantilever core stiffen inclined with a slope directed to the side of the slab 1 floor.

The operation of such a connection is carried out in the following order.

When the horizontal horizontal seismic forces P arising in the building are less than the friction resistance over the contacting surface of the embedded part of the slab and the rigidity core console, the system works as a single whole, without Yu energy absorption effects. When the horizontal seismic forces P arising in the building are greater than the mutual friction force on the contacting surfaces, the frame and the stiffening core are offset and, due to the contacting surfaces, the vibration energy is absorbed. Due to the stiffness of the slab, when it moves along an inclined __ surface in the cantilever area with an extrinsic magnitude and the friction force increases as it moves, this also increases the effect of energy absorption. _ ........ *

Thus, the optimal design of such a “node connection” is determined by the appropriate selection of parameters (the angle of inclination of the contacting surface, the magnitude of the seismic horizontal force and the stiffness of the slab around the core).

Moreover, such a construction provides substantial energy absorption in a simple and accessible manner for construction.

Claims (1)

Claim The node connecting the floor slab console with the core of seismic resistance of the building, which has a perimeter cantilever, including interconnected embedded metal part on the bottom surface of the plate and the metal part of the rigidity core console, and a technological gap is formed between the last and the end of the floor slab console, that, in order to increase the energy absorption of seismic vibrations, the contacting surfaces of the embedded part of the console of the floor plate and the console of the core of rigidity are made on lonnymi with a slope directed toward the floor slab.