Foundation combination vibration isolation arranging structure and method suitable for large-span structure

Abstract

The invention provides a foundation combination vibration isolation arranging structure and method suitable for a large-span structure. The structure comprises a plurality of different types of vibration isolation support seats arranged in a partitioning mode; the vibration isolation support seats comprise lead core rubber vibration isolation support seats, laminated rubber vibration isolation support seats and speed type dampers; the lead core rubber vibration isolation support seats are arranged in a peripheral area of a vibration isolation layer; the laminated rubber vibration isolation support seats are arranged in an inner area of the vibration isolation layer; and the speed type dampers are arranged in the peripheral area of the vibration isolation layer from the orthogonal two directions. According to the foundation combination vibration isolation arranging structure and method suitable for the large-span structure, through reasonably arranging and optimizing the different typesof the vibration isolation support seats, a combined vibration isolation layer coordinated with the upper large-span structure can be formed, torsion effects of the upper structure are effectively reduced, and vibration isolation effects are remarkably improved.

Description

technical field

[0001] The present invention relates to the technical field of base isolation for large-span building structures, in particular to a base-combined base-isolation layout structure and method suitable for large-span structures, and can be specifically applied to base-combined base isolation using different types of base-isolation bearings. Earthquake long-span building structures. Background technique

[0002] Seismic isolation technology achieves the purpose of shock absorption by prolonging the natural vibration period of the structure, so it is most suitable for low-rise and multi-story buildings (such as figure 1 ), the building is provided with a shock-isolation bearing 5, and the shock-isolation technology can also be applied to high-rise buildings with higher rigidity. After adopting the seismic isolation technology, the seismic performance of the building is significantly improved, and it is preferred to be used in high-intensity earthquake areas. It c...

Examples

Embodiment 1

[0060] This embodiment provides a basic combined seismic isolation structure suitable for large-span structures, which includes: several different types of seismic isolation bearings arranged in different areas; the seismic isolation bearings include: lead core rubber seismic isolation bearings Seat 1, laminated rubber shock-isolation bearing 2 and velocity type damper 4; said lead-core rubber shock-isolation bearing 1 is arranged in the peripheral area of ​​the shock-isolation layer; said laminated rubber shock-isolation bearing 2 is arranged in the The inner area of ​​the seismic layer (or, the seismic isolation bearing also includes: an elastic skateboard bearing 3; the elastic slider bearing 3 and the laminated rubber vibration isolation bearing 2 are arranged in the inner area of ​​the seismic isolation layer) ; The velocity damper 4 is arranged in the peripheral area of ​​the shock-isolation layer from two orthogonal directions (horizontal and water quality two directions...

Embodiment 2

[0068] combine Figure 3 to Figure 5 As shown, on the basis of the first embodiment above, this embodiment also provides a foundation combined seismic isolation method suitable for large-span structures, including:

[0069] First, determine a reasonable seismic isolation scheme and the location of the seismic isolation layer according to site conditions, performance objectives, and building conditions;

[0070] Secondly, determine a reasonable isolation target and estimate the stiffness of the isolation layer;

[0071] Control the long-term surface pressure of the isolation bearing, and control the vertical deformation and deformation difference of the bearing under vertical load;

[0072] Determine the reasonable arrangement of seismic isolation devices, arrange seismic isolation bearings with higher stiffness such as lead rubber isolation bearing 1 in the peripheral area of ​​the isolation layer, and install isolation bearings with lower horizontal stiffness in the inner ar...

technical field

[0001] The present invention relates to the technical field of base isolation for large-span building structures, in particular to a base-combined base-isolation layout structure and method suitable for large-span structures, and can be specifically applied to base-combined base isolation using different types of base-isolation bearings. Earthquake long-span building structures. Background technique

[0002] Seismic isolation technology achieves the purpose of shock absorption by prolonging the natural vibration period of the structure, so it is most suitable for low-rise and multi-story buildings (such as figure 1 ), the building is provided with a shock-isolation bearing 5, and the shock-isolation technology can also be applied to high-rise buildings with higher rigidity. After adopting the seismic isolation technology, the seismic performance of the building is significantly improved, and it is preferred to be used in high-intensity earthquake areas. It c...

Examples

Embodiment 1

[0060] This embodiment provides a basic combined seismic isolation structure suitable for large-span structures, which includes: several different types of seismic isolation bearings arranged in different areas; the seismic isolation bearings include: lead core rubber seismic isolation bearings Seat 1, laminated rubber shock-isolation bearing 2 and velocity type damper 4; said lead-core rubber shock-isolation bearing 1 is arranged in the peripheral area of ​​the shock-isolation layer; said laminated rubber shock-isolation bearing 2 is arranged in the The inner area of ​​the seismic layer (or, the seismic isolation bearing also includes: an elastic skateboard bearing 3; the elastic slider bearing 3 and the laminated rubber vibration isolation bearing 2 are arranged in the inner area of ​​the seismic isolation layer) ; The velocity damper 4 is arranged in the peripheral area of ​​the shock-isolation layer from two orthogonal directions (horizontal and water quality two directions...

Embodiment 2

[0068] combine Figure 3 to Figure 5 As shown, on the basis of the first embodiment above, this embodiment also provides a foundation combined seismic isolation method suitable for large-span structures, including:

[0069] First, determine a reasonable seismic isolation scheme and the location of the seismic isolation layer according to site conditions, performance objectives, and building conditions;

[0070] Secondly, determine a reasonable isolation target and estimate the stiffness of the isolation layer;

[0071] Control the long-term surface pressure of the isolation bearing, and control the vertical deformation and deformation difference of the bearing under vertical load;

[0072] Determine the reasonable arrangement of seismic isolation devices, arrange seismic isolation bearings with higher stiffness such as lead rubber isolation bearing 1 in the peripheral area of ​​the isolation layer, and install isolation bearings with lower horizontal stiffness in the inner ar...

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