Productos

Cojinetes de olla

Descripción general del producto y detalles técnicos

El cojinete de rotación definida para puentes de gran vano & pilares pesados

Diseñados para manejar cargas verticales extremas desde 1,000 kN hasta más de 200,000+ kN, nuestros cojinetes de olla proporcionan un centro de rotación fijo y controlado a través de un disco elastomérico confinado. Este diseño robusto y de bajo mantenimiento garantiza décadas de servicio confiable. Diseñados a medida para su proyecto para cumplir completamente con los estándares AASHTO, EN, BS, AS y IRC.

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Correo electrónico: info@kwbridgebearing.com

Descripción general de la serie de cojinetes de pot: Diseñados para un rendimiento definitivo

Nuestra serie de cojinetes de pot está diseñada para proporcionar una solución robusta, predecible y duradera para estructuras que requieren una capacidad de carga vertical extrema combinada con movimientos rotacionales y translacionales controlados. El principio básico: un disco elastomérico confinado dentro de un pot de acero de precisión, garantiza un rendimiento confiable y sin mantenimiento.

Características principales del producto:

Capacidad de carga vertical extrema: Diseñados para soportar cargas desde 1,000 kN hasta más de 200,000 kN, lo que los hace ideales para los pilares principales de puentes de gran luz, vigas de transferencia y soportes industriales pesados.

Rendimiento rotacional definido: El mecanismo del pot proporciona una rotación fija de un solo eje con un centro calculable con precisión. La capacidad rotacional está claramente definida y probada de acuerdo con las especificaciones y estándares del proyecto (por ejemplo, hasta 0.03 rad o según se requiera).

Acomodación de grandes movimientos: Equipados con superficies deslizantes diseñadas (como PTFE, UHMWPE o materiales compuestos contra acero inoxidable pulido), nuestros cojinetes de pot pueden acomodar desplazamientos horizontales significativos (típicamente hasta ±1000 mm o más) para manejar la expansión térmica, la fluencia y los movimientos sísmicos. La selección de materiales está optimizada para baja fricción, alta resistencia al desgaste y condiciones de carga específicas.

Durabilidad y bajo mantenimiento: El diseño sellado protege el disco elastomérico de la degradación ambiental. El acero de alta calidad y los tratamientos de superficie especializados proporcionan una excelente resistencia a la corrosión para una larga vida útil con un mantenimiento mínimo.

Cumplimiento y personalización:

Cumplimiento de estándares globales: Nuestros cojinetes están diseñados, calculados y probados para cumplir con todos los códigos internacionales importantes, incluidos AASHTO (EE. UU.), EN 1337-5 (UE), BS 5400 (Reino Unido), AS 5100 (Australia) e IRC 83 (India).

Ingeniería personalizada completa: Ofrecemos personalización completa más allá de los tamaños estándar. Esto incluye adaptar las dimensiones del pot, las propiedades del compuesto elastomérico, la selección de materiales deslizantes, las placas deslizantes de acero inoxidable, los detalles de conexión (patrones de pernos, llaves de corte) y los recubrimientos anticorrosivos a los requisitos exactos de su proyecto.

Aplicaciones Principales de Puentes:

Puentes de Gran Luz: Puentes atirantados, puentes de arco y grandes puentes de viga continua.

Puntos de Carga Pesada: Pilas de puente sujetas a reacciones verticales inmensas, vigas de transferencia en edificios y soportes para equipos industriales pesados.

Estructuras que Requieren Movimiento Predecible: Puentes y estructuras donde el comportamiento rotacional definido y la gran capacidad de desplazamiento horizontal son parámetros críticos de diseño.

Identifique la solución de soporte de pot que sea adecuada para su megestructura.

[Descargar la Guía General del Producto] o [Contactar a nuestro equipo de ingeniería] para un proyecto-revisión específica.

CRÍTICO — marcadores de enlace en línea: el texto puede contener marcadores como "algún texto". DEBES mantener cada marcador exactamente como está (mismos dígitos, mismos corchetes, mismo emparejamiento) y traducir SOLO el texto entre ellos. Nunca elimines, reordene, fusiona, renumera o traduzcas los marcadores en sí. Para términos del glosario: utiliza EXACTAMENTE la traducción especificada (coincidencia sin distinción entre mayúsculas y minúsculas).

Cojinetes de olla
Parameter CategoryParameterSpecification & Details
Capacidad de carga

Vertical Load Range1,000 kN – 200,000+ kN Capacity varies with bearing size and design. Custom designs can exceed 200,000 kN.

Horizontal Load Capacity10-80% of vertical load capacity Depends on bearing type (guided vs. unguided) and sliding surface friction coefficient.
MOVEMENT CAPABILITY

Maximum RotationUp to 0.03 radians (≈1.7°) Fixed rotational center. Rotation capacity is precisely defined and verified by testing.

Horizontal Displacement RangeGuided Sliding: Up to ±1000 mm Unguided/Multi-Directional: Up to ±1000 mm Actual displacement depends on bearing design and project requirements.

Friction Coefficient (µ)0.5% - 7% Varies with contact pressure, sliding material combination (PTFE/stainless steel, UHMWPE/stainless steel, UHPF/stainless steel, etc.), and lubrication.
MATERIAL SPECIFICATIONS

Steel ComponentsPot, Piston, Base Plate: Structural steel grades (Q345B, ASTM A572, EN 10025 S355) Machining Tolerance: High precision machining for flatness and surface finish

Elastomeric DiscMaterial: High-durability Natural Rubber (NR) or Chloroprene (CR) compound Properties: Formulated for high pressure resistance, low compression set, and aging resistance Confined Design: Sealed within steel pot to prevent extrusion and environmental degradation

Sliding Surface SystemLow-Friction Liner: PTFE, UHMWPE, or engineered composite materials Sliding Plate: Polished Stainless Steel (304/316) or specially treated alloy Design: Optimized for low friction, high wear resistance, and specific load conditions

Corrosion ProtectionStandard: Epoxy paint system Enhanced: Hot-dip galvanizing Specialized: Custom coating systems for aggressive environments
PERFORMANCE & DURABILITY

Design Service LifeEngineered to match structure design life (typically 50-100 years) Sealed pot design minimizes maintenance requirements and protects elastomeric disc.

Operating Temperature RangeStandard: -25°C to +60°C Extended Range: -40°C to +70°C (with special compounds)

Mantenimiento RequirementsMinimal to none Sealed design eliminates need for regular maintenance. Periodic visual inspection recommended.
STANDARDS & COMPLIANCE

Design StandardsAASHTO LRFD (USA) EN 1337-5 (Europe) BS 5400 (UK) AS 5100.4 (Australia) IRC 83 (India) Other national standards accommodated upon request.

Testing & CertificationTipo Tests: Per relevant standards (load, rotation, displacement) Factory Production Control (FPC): Ongoing quality verification CE Marking: Available for EN 1337-5 compliance Third-Party Inspection: Supported and facilitated

Customization CapabilityFull custom engineering available All parameters customizable: dimensions, load ratings, rotation limits, sliding materials, connector details (bolt patterns, shear keys), and anti-corrosion coatings.



Ventajas clave of Our Pot Bearings

We deliver pot bearings that combine definitive engineering performance with complete project-ready support, providing unmatched reliability and value.

1. Engineered for Unmatched Performance & Reliability

Extreme Load Capacity & Distribution: Supports 1,000 to over 200,000 kN, reliably bearing immense loads while distributing them evenly to minimize structural stress.

Controlled Movement Accommodation: Precisely accommodates horizontal displacement (±600mm) and defined rotation to handle thermal expansion, creep, and settlement.

Durable, Maintenance-Free Operation: The sealed, pressure-confined elastomeric disc and robust construction ensure long-term performance with minimal lifecycle cost.

2. Full Compliance, Certification & Documentation

Independently Verified Performance: Backed by accredited third-party test reports and CE Marking (EN 1337-5), with compliance for AASHTO, AS, IRC and other global standards.

Complete Technical Dossier: Includes a detailed Project Calculation Report for engineering approval and validation.

Streamlined Logistics Support: We provide a full suite of export and technical documents (commercial invoices, packing lists, certificates, manuals), simplifying customs clearance and project administration.

3. Complete Customization & Project Integration

Total Design Flexibility: Fully customizable for load, dimensions, rotation limits, sliding materials (PTFE/UHMWPE), and connections to meet exact specifications.

Secure Global Delivery: Each unit is shipped in robust, export-ready wooden crating, ensuring secure arrival worldwide.

4. Distinct Value for Every Partner

For Distributors: A high-margin, technically certified product with reliable 15-35 day lead times and full sales support.

For Engineers: Guaranteed performance, risk-mitigated compliance, and seamless integration, ensuring project safety and schedule certainty.

Engineered for Certainty. Delivered with Complete Support.


Instalación y construcción: Tailored Procedures for Different Superstructures

The installation of pot bearings varies significantly depending on the type of superstructure they support. Our guidance is tailored to ensure correct and efficient installation for each specific application, maximizing performance and longevity.

Core Principle: Built-in Site Adaptability

All our pot bearing designs accommodate typical on-site variations with a positional adjustment tolerance of ±5 to ±10 mm. This built-in flexibility helps mitigate minor construction deviations without compromising performance.

Installation for Cast-in-Place Concrete Beams/Girders

This method involves securing the bearing before the concrete pour, integrating it into the monolithic structure.

Preparation & Positioning:

After constructing the substructure (pier/abutment cap), precisely position and temporarily fix the pot bearing onto it using the embedded anchor bolts or a temporary frame.

Ensure perfect leveling and alignment per shop drawings before proceeding.

Integration with Formwork & Reinforcement:

Erect the beam soffit formwork around the bearing. The bearing's top plate often acts as part of the formwork.

Carefully place the reinforcement cage, ensuring it clears the bearing's top connector plates or shear keys.

Concrete Placement & Curing:

Pour concrete, taking care not to displace the bearing. Vibrate concrete thoroughly around the bearing to ensure full encapsulation and no voids.

Allow the concrete to cure properly. The bearing becomes permanently encased and fixed upon curing.

Key Consideration: The bearing must be impeccably positioned and locked before the pour, as adjustments afterward are impossible.

Installation for Precast Concrete Beams/Girders

Here, the bearing is installed on the substructure, and the precast element is then lowered onto it.

Substructure Preparation & Bearing Fixing:

On the completed substructure, position the pot bearing. For fixed types, grout the base plate cavity with high-strength non-shrink grout.

For sliding types, prepare and align the stainless steel sliding plate.

Beam Erection & Placement:

The precast beam, with pre-prepared mating surfaces (e.g., grout pockets or sole plates), is lifted and carefully lowered onto the bearing.

Use the built-in tolerance to make final horizontal adjustments for perfect alignment with other beams.

Final Connection:

For grouted connections, fill the interface between the beam and the bearing's top plate with high-strength grout.

For bolted connections, insert and torque the connecting bolts.

Key Consideration: Coordination between Instalación de cojinetes height and the precast beam's underside elevation is critical.

Installation for Steel Beams/Girders

This typically involves direct bolted connections, offering high precision and adjustability.

Instalación de cojinetes on Substructure:

Fix the pot bearing to the concrete substructure via anchor bolts grouted into the cap or using a base plate leveled with shim packs and grouted.

Beam Lowering & Alignment:

The steel beam, with pre-drilled holes in its bottom flange or attached sole plate, is lowered onto the bearing.

Temporary bolts or pins are used to hold it in place while final alignment checks are made.

Permanent Bolted Connection:

Insert high-strength friction-grip bolts through the mating holes in the beam and the bearing's top plate.

Tighten all bolts to the specified pre-tension (torque) in the correct sequence to ensure a rigid, slip-critical connection.

Key Consideration: Strict adherence to bolt tightening procedures is essential to achieve the required clamping force and connection stiffness.

Universal Final Verification (All Types)

Regardless of the superstructure type, a final check is mandatory:

Verify final position, level, and alignment.

Confirm unobstructed movement capability for sliding/guided types.

Ensure all bolts are torqued or all grout has cured.

Your Technical Support Package

We ensure successful installation through:

Structure-Specific Installation Drawings: Detailed plans for your exact beam type and bearing model.

Comprehensive Method Statements: Step-by-step guides tailored to cast-in-place, precast, or steel construction.

Real-Time Technical Support: Direct access to our engineers for clarification during critical installation phases.

Descargar the specific guide for your project type or contact us for tailored drawings.

From a structural perspective: Apoyos de olla utilize a pot-shaped sealing structure, making them more suitable for long-term stability requirements under complex working conditions; while disc bearings primarily use a disc-shaped structure, focusing on lightweight installation scenarios.

In terms of load-bearing capacity: Apoyos de olla are suitable for high-load scenarios and can meet the heavy-load requirements of large-span bridges; disc bearings are more suitable for medium-to-low load scenarios and are mostly used in small and medium-span structures.

Regarding rotational angle capability: Apoyos de olla support larger rotational angles, making them suitable for bridge types with large beam deformations; the rotational angle range of disc bearings is relatively limited, making them more suitable for conventional deformation scenarios.

In terms of applicable bridge types: Apoyos de olla are commonly used in large-span highway bridges, railway bridges, and urban elevated bridges; disc bearings are mostly used in small and medium-span municipal bridges, pedestrian bridges, and other lightweight structures.

In terms of customization flexibility: Apoyos de olla support full-dimensional structural and parameter customization, allowing them to match specific project requirements; the customization dimensions of disc bearings are relatively concentrated on basic specification adjustments.

Escenarios de aplicación

Puente de carretera

Puentes de carretera

Ideal para pasos elevados de carretera y puentes de intercambio con tramos y cargas moderados.

Puente ferroviario

Puentes ferroviarios

Adecuado para viaductos ferroviarios que requieren aislamiento de vibraciones y distribución de carga.

Viaducto urbano

Viaductos urbanos

Perfecto para carreteras elevadas y sistemas de tránsito urbano en entornos urbanos.

Puente peatonal

Puentes peatonales

Solución rentable para puentes peatonales y estructuras de cruce de uso ligero.

Documentos técnicos

Hoja de datos del producto

Especificaciones y dimensiones completas

PDF • 2.4 MB
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Guía de instalación

Instrucciones de instalación paso a paso

PDF • 3.1 MB
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Dibujos CAD

Archivos AutoCAD DWG para integración de diseño

DWG • 1.8 MB
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Certificados de prueba

Informes de prueba de calidad y rendimiento

PDF • 1.5 MB
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