Viscous fluid damper is a passive velocity dependent energy dissipation and seismic reduction core component. The product consumes the vibration kinetic energy generated by earthquakes and strong winds through the internal high viscosity silicone oil fluid throttling motion, greatly reducing the inter story displacement and structural shear force of buildings, and reducing plastic damage to beams and columns; It can be used for seismic reinforcement in both newly-built and old school buildings, residential areas, and factories. It is a standard seismic safety device for high-rise buildings, hospitals, schools, and large-span venues.

Ⅰ、 Internal structural composition

High strength cylinder: seamless alloy steel pipe, with anti-corrosion coating sprayed on the outer wall, resistant to compression and corrosion;

Chrome plated piston rod: quenched and tempered wear-resistant treatment, not easily worn during long-term reciprocating motion;

Precision piston assembly: built-in multi-stage throttling damping holes, core energy dissipation unit;

Damping medium: high-purity methyl silicone oil, low temperature non solidification, high temperature non volatilization, stable performance;

Multi sealed dustproof system: multiple oil seals+external dustproof rings, completely eliminating oil leakage and seepage;

Connecting ear plate: Pin type connecting end, suitable for various steel supports and embedded nodes.

Ⅱ、 Working shock absorption principle

Mechanical formula: F=C ⋅ V α, damping force is nonlinearly related to motion velocity. Under the action of earthquakes and strong winds, buildings undergo deformation, and the damper piston and cylinder undergo relative sliding. Silicone oil is forced to pass through the piston damping hole at high speed, and fluid friction converts vibration kinetic energy into heat release, rapidly attenuating the amplitude of building shaking and weakening the impact force transmitted to beams and columns; Under severe earthquake conditions, dampers prioritize energy consumption and act as building "seismic buffering fuses" to protect the main structure from irreversible damage.

Ⅲ、 Product mainstream classification

Braced viscous damper (general project type) diagonal slant support is installed between the floor frames, suitable for high-rise residential buildings, office buildings and steel structure plants; Damping force 50kN~5000kN fully customized.

The shear wall connecting beam damper is embedded in the shear wall connecting beam, which does not occupy indoor space and is specifically designed for high-rise shear wall residential buildings.

Viscous damping wall (VFW) is an integrated seismic component with dual functions of enclosure and energy dissipation. It is preferred for large-span projects in sports venues, hospitals, and exhibition centers.

Miniature small tonnage dampers with short stroke and low output are commonly used for seismic reinforcement and renovation of multi story old school buildings and residential areas.

Ⅳ、 Seven core product advantages

Efficient shock absorption, synchronized control of wind vibration can consume 40%~60% of earthquake input energy, while suppressing the shaking of super high-rise winds, improving indoor living comfort, and reducing wind vibration dizziness.

Without additional stiffness, the structural design is simple and only provides damping energy dissipation, without changing the natural vibration period of the building. The difficulty of structural calculation and drawing optimization is low, and both concrete and steel structure buildings can be adapted.

Global weather resistance, with a working temperature range of * * -40 ℃~+70 ℃ * * for silicone oil media used nationwide, and no degradation in performance in harsh northern temperatures, rainy southern regions, and high salt spray coastal environments.

Ultra long lifespan, lifetime leak free triple sealed dust-proof structure, completed millions of fatigue cycle tests before leaving the factory, designed for a service life of ≥ 50 years, synchronized with the main building structure.

Zero operation and maintenance costs, fully enclosed integrated structure with no maintenance required in the later stage, no need to regularly add damping fluid, only simple annual appearance inspection is needed.

The anti-corrosion level can be customized according to standard C3 indoor anti-corrosion; Coastal and chemical plant areas can choose C5-M heavy-duty anti-corrosion coating, which is resistant to salt spray and acid alkali corrosion.

The testing data is complete, and there is no worry about acceptance. Each unit undergoes mechanical performance testing before leaving the factory, and third-party authoritative testing reports can be provided to meet all regulatory requirements for construction drawing review and completion acceptance.

Ⅴ、 Standard core technical parameters

Parameter project technical indicators: Rated damping force of 50kN~5000kN (customized for super large tonnage), adjustable speed index of α 0.2~1.0, seismic resistance of building conventional 0.3~0.5, standard stroke of ± 50mm, ± 100mm, ± 150mm, ± 200mm, ± 300mm, ± 400mm, applicable environmental temperature of -40 ℃~+70 ℃, fatigue performance after 50 ultimate cycle loading, performance attenuation ≤ 5%, sealing service life ≥ 50 years, no leakage, in accordance with JGJ297-2013, JG/T 209-2012, GB50011

Ⅵ、 Full scenario application scope

High rise civil buildings: high-rise residential buildings, apartments, office buildings, and super high-rise skyscrapers;

Key fortified public buildings (Class B seismic): primary and secondary schools, hospitals, disease control centers, archives, data centers;

Large span public venues: sports halls, convention centers, airport terminals, theaters;

Industrial special buildings: steel structure factory buildings, hazardous chemical workshops, blast resistant supporting buildings, energy storage rooms;

Seismic reinforcement of old buildings: renovation of old residential areas, teaching buildings, and office buildings without the need for large-scale demolition and renovation;

Supporting infrastructure: underground comprehensive pipe gallery, urban elevated, rail transit seismic support.

Ⅶ、 Installation, construction, and delivery support

Connection method: Two end ear plates+pin shaft assembly, matched with embedded steel plates, steel supports, and pin shaft components;

Construction process: Main embedded nodes → Steel support lifting and positioning → Damper pin shaft assembly → Gap fine adjustment;

Installation accuracy: The error control of the center distance between the two end pin shafts is ≤± 2mm, ensuring the accuracy of damping force output;

Delivery documents: Product certificate of conformity, mechanical testing report, installation node drawings, quality assurance commitment letter.

Ⅷ、 Product Core Value

Traditional architecture relies solely on beams and columns to resist earthquakes. After strong earthquakes, beams and columns crack and steel bars yield, resulting in high post disaster repair costs; As an independent energy absorbing component, viscous dampers prioritize absorbing impact energy during earthquakes, keeping the main beams and columns intact. After the earthquake, only the dampers need to be inspected, greatly reducing post disaster maintenance costs and meeting the national building seismic upgrade policy, comprehensively improving the building safety reserve level.