GB/T 37358-2019 in English
VALIDFriction pendulum isolation bearings for buildings
- Issued on:2019-03-25
- Implemented on:2020-02-01
- File Format:PDF
- Delivery:Via email within 5 business days
$359.00
| Standard No: | GB/T 37358-2019 |
| Document status: | VALID |
| Title in English: | Friction pendulum isolation bearings for buildings |
| Title in Chinese: | 建筑摩擦摆隔震支座 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2019-03-25 |
| Implemented on: | 2020-02-01 |
| ICS Classification: | 91.120.25-Seismic and vibration protection |
| Chinese Classification: | P15-Engineering seismic resistance |
| Professional Classification: | GB-National Standard |
| Related Keywords: | friction material
friction pendulum isolation bearings friction surface dynamic friction double friction energy dissipation mechanism |
| Related Topics: | friction
friction v4 every other Vibration seat friction pendulum bearing Building isolation bearing GB/T 37358-2019 GB/T37358-2019 szbl rubbing GBT37358 GB/T 37358-2019 Isolation bearing friction pile Bridge friction pendulum bearing gbt37358-2019 gb/t37358 |
《GB/T 37358-2019建筑摩擦摆隔震支座》由333（住房和城乡建设部）归口，主管部门为住房和城乡建设部。
Introduction
Analysis of the core terminology system
| Terminology | Definition | Engineering significance |
|---|---|---|
| Equivalent curvature radius | The inverse of the theoretical simple pendulum curvature | The key parameter that determines the swing period of the support |
| Kinematic friction coefficient | The ratio of dynamic friction to vertical pressure | Influences the efficiency of seismic energy dissipation |
| Post-yield stiffness | The slope of the hysteresis curve after yield | Reflects the secondary stiffness characteristics of the support |
Product classification system
- Type I (single main sliding surface): including Type Ia (integral spherical crown) and Type Ib (split design)
- Type II (double main sliding surfaces): double friction energy dissipation mechanism
Typical specifications:
| Benchmark bearing capacity (kN) | 20 levels from 1000 to 30000 |
|---|---|
| Ultimate displacement (mm) | ±200~±600, 9 levels in total |
| Swing period (s) | 2~6, 8 levels in total |
Key Material Technical Indicators
| Material Type | Density(g/cm³) | Tensile Strength(MPa) | Linear Abrasion(μm) |
|---|---|---|---|
| Polytetrafluoroethylene | 2.14-2.20 | ≥30 | ≤200 |
| Modified Polytetrafluoroethylene | 2.0-2.10 | ≥21 | |
| Ultra-high Molecular Weight Polyethylene | 0.93-0.98 | ≥30 |
Note: The thickness tolerance of friction material is controlled according to the diameter classification, and +0.8mm deviation is allowed when >1200mm
Mechanical performance requirements
| Performance | Test conditions | Qualification standard |
|---|---|---|
| Compression deformation | Benchmark bearing capacity | ≤1% of total height or 2mm |
| Dynamic friction coefficient | 1/3 limit displacement | Design value±25%(single) |
| Temperature correlation | -25~40℃ | Friction coefficient change≤45% |
Calculation formula example:
Equivalent stiffness Keff = (1/R + μ/D)·P
Damping ratio ζ = 4μPD/(2πKeffD2)
Quality inspection system
- Factory inspection:100% inspection of appearance dimensions, 20%~100% sampling to measure mechanical properties
- Type inspection:Implemented when new product identification or major changes in material process
- Special requirements:Low-temperature impact test is required in -25℃ environment
Engineering application suggestions
1. Selection principle:Calculate the benchmark bearing capacity according to the building weight, and determine the displacement level according to the design intensity
2. Installation points:
- The friction surface must be cleaned with acetone
- The thickness of epoxy resin coating ≤1mm
- The top surface of the countersunk screw is ≥3mm lower than the slide plate
3. Maintenance requirements: Regularly check the integrity of the dustproof device, and re-inspect the coating every 5 years in a corrosive environment
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