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| Warranty: | 2 Years After Leaving The Factory |
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High damping rubber bearing
During earthquake, the vibration from various directions will impact fixed base building and results in deformation and building or bridge damages. The high damping bearing pad is improved through high damping material, which the damping ratio can approach to 15% to 18%.
When the earthquake comes, the high damping rubber bearing will increase the horizontal displacement through rubber shear deformation and reduce friction coefficient. The large displacement can weaken the vibration from all direction and reduce the damage of building and bridges.
Joint structure
Damping structure
Fixed type (HDR rubber bearing). The high damping rubber has excellent horizontal shear performance to bear the horizontal force. It can absorb vibration through large displacement in horizontal direction and hysteretic energy.
Sliding type (LNR rubber bearing). The displacement is achieved by sliding friction. The top stainless steel plate and PTFE sliding plate can reduce friction coefficient and achieve large displacement for shock absorption.
Features
1.High-damping bridge bearings are composed of alternating layers of natural rubber filled with rubber and reinforced steel plates. These rubber layers provide period extension and energy dissipation, while the steel plates enhance the vertical load-bearing capacity.
2.They can effectively isolate seismic energy, reducing the damage to bridge structures caused by earthquakes, and have demonstrated good performance in several major earthquakes.
3.These bearings are designed to withstand compressive loads caused by the self-weight and live loads of the bridge, as well as horizontal loads induced by earthquakes and/or wind.
Performance requirement of non shrinkage epoxy resin mortar for grouting
| Parameter Name | Unit | Specification Range |
| Damping Ratio | % | ≥12 |
| Load Capacity | kN | As per design requirement |
| Vertical Stiffness | kN/m | As per design requirement |
| Horizontal Stiffness | kN/m | As per design requirement |
| Vertical Compression Deformation | mm | ≤10 |
| Horizontal Deformation | mm | ≤30 |
| Durability | - | Fatigue life over 20 million cycles |
| Temperature Range | ºC | -40 to +70 |
| Items | Technical Index | Items | Technaical Index | |
| Tensile strength | 8h | ≥20 | mobility | ≥220mm |
| 12h | ≥25 | Temperature range | +5~35ºC | |
| 24h | ≥40 | Initial setting time | ≥30min | |
| 28h | ≥50 | Final setting time | ≤3h | |
| 56d and 90d | No reduction | Shrinkage | <2% | |
| Bleeding | Non Bleeding | Expansion rate | ≥0.1% | |
Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.
We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to establishing long-term cooperative relationships with customers from both domestic and international markets.
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