Grating vibration isolation foundation micro-vibration control construction technology

By employing the construction technology of micro-vibration control for grating-based vibration isolation foundations and utilizing the design of graded sand and gravel cushion layers and seismic isolation piers, the problem of micro-vibration control in traditional buildings in high-intensity zones has been solved, achieving full-frequency vibration isolation and resonance avoidance, and providing efficient vibration isolation effects.

CN121992813APending Publication Date: 2026-05-08CHINA RAILWAY 10 BUREAU GRP NO 7 ENG CO LTD +1
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Patent Information

Application Number
CN202512016425.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Traditional building structures are unable to meet the stringent requirements of high-end industries for micro-vibration control, especially in high-intensity seismic fortification areas, where effectively isolating seismic energy and suppressing daily micro-vibrations has become a challenge.

Method used

The construction process of micro-vibration control for grating-based vibration isolation foundations is adopted, including graded sand and gravel cushion layer, vibration isolation pier design, and buffer joint treatment. Combining damping characteristics and inertial mass impedance, the vibration isolation effect is ensured through layered construction and temperature control.

Benefits of technology

It achieves full-frequency vibration control, avoids resonance, ensures the uniformity and stability of the vibration isolation layer, improves construction efficiency, and provides an ultra-quiet environment.

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Abstract

The invention discloses a micro-vibration control construction process for a grating vibration isolation foundation, and relates to the technical field of building construction. Comprising the following steps: S1, measuring and positioning: measuring and releasing sideline control piles of each shock insulation pier and a sand-gravel cushion layer; s2, construction of a graded gravel cushion layer; s3, compaction coefficient detection; s4, paying-off is conducted on the bottoms of the shock insulation piers, wherein the sideline control point of each shock insulation pier is measured and paid off; s5, side formwork installation and steel bar binding, wherein the distance between the vibration isolation pier and the equipment walkway foundation is 10 cm, a foam polyethylene plate with the thickness of 10 cm is adopted as the side formwork, and the side formwork and the steel bars are installed, bound and formed together; s6, mass concrete pouring and temperature control, wherein layered pushing type continuous pouring is adopted, and the thickness of each layer does not exceed 50 cm; s7, concrete curing; and S8, buffer seam treatment. The compaction graded gravel cushion layer is arranged as a vibration isolation filtering layer, and the large-scale independent vibration isolation pier body is combined, so that double isolation of earthquake dynamic response and environmental vibration is effectively realized, and stable operation of a precise instrument is ensured.
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