Frequency-modulation mass anti-flection support

Abstract

The invention relates to a frequency-modulation mass buckling-restrained brace, which comprises a frequency-modulation mass vibration reduction part and a buckling-restrained energy dissipation and vibration reduction part, wherein the buckling-restrained energy dissipation and vibration reduction part consists of steel cores which are connected between important gussets of a structure, sleeved steel tubes which are sleeved on active sections of the steel cores, filled concrete and flexible materials which are glued on the surfaces of the steel cores; the frequency-modulation mass vibration reduction part consists of mass blocks, resilient elements and damping materials; the mass blocks are formed by the sleeved steel tubes and the filled concrete; the resilient elements are made of steelplate springs and fixed between gusset plate connecting pieces and the sleeved steel tubes or fixed between support connecting pieces and the sleeved steel tubes; and the damping materials and the flexible materials between the steel cores and the filled concrete of the buckling-restrained energy dissipation and vibration reduction part are shared. The frequency-modulation mass buckling-restrained brace integrates TMD vibration reduction technology and energy dissipation and vibration reduction technology of buckling-restrained braces, has the characteristics of easy manufacture, convenient assembly, economy and durability, non-maintaining and changeability, and simultaneously has the function of vibration reduction in the horizontal direction and the vertical direction.

Description

FM quality anti-buckling braces Technical field: The invention relates to a buckling-proof support of frequency-modulated mass, which belongs to the technical field of energy dissipation and shock absorption (vibration) of civil engineering structures. Background technique: As we all know, the centralized TMD damping system requires relatively large tuning mass, supporting facilities and damping facilities. It is difficult for some decentralized TMD vibration reduction schemes to reduce both horizontal and vertical vibrations, and it is also difficult to deal with the relationship between small vibration reduction and strong vibration reduction. In the prior art, the anti-buckling support can increase the structural rigidity, reduce lateral displacement, improve the anti-seismic capability of the structure, and improve the anti-seismic performance. As shown in Fig. 1, the steel core of the anti-buckling support is installed between the nodes of the frame structure, and i...

AI Technical Summary

Problems solved by technology

However, the above-mentioned commonly used anti-buckling supports reduce the lateral displacement of the structure, absorb the energy of strong earthquakes and protect the main structure, and at the same time increase the rigidity of the structure and add a certain weight

On the one hand, this requires the main structure to withstand the resulting gravity and seismic inertial force. On the other hand, because the steel core is in an elastic working state before yielding, it cannot reduce the wind load, indoor equipment, outdoor environment, etc. under normal use conditions. Structural vibration cannot reduce the inertial force and structural vibration caused by frequent earthquakes

For applications with high requirements (such as small side shift, micro-vibration, etc.), strong vibration sources but vibration reduction requirements, or under moderate-level (such as fortification intensity) earthquakes, it is necessary to ensure building functionality. At the same time, under rare intensity When it is necessary to ensure excellent seismic performance, it is difficult to achieve both by using buckling-resistant bracing technology alone

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