Lead Rubber Bearing

Lead Rubber Bearing (LRB bearing ) from Tiantie is made of multi-layer natural rubber and multi-layer steel plate, embedded with vertical lead core, which has good vertical bearing capacity and horizontal deformation capacity. As one of professional lead rubber bearing manufacturers, the lead core of the our LRB bearing can absorb seismic energy during plastic deformation, greatly increasing the energy consumption and wind resistance of the isolated building. (the support and the connecting plate are vulcanized as a whole)

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Features of Lead Rubber Bearing

LNR-I: As one of the experienced lead rubber bearing manufacturers, our production process is mature; Stable performance; Strong energy dissipation capacity.

LRB-II: The support of lead rubber bearing base isolation from Tiantie is machined as a whole, and the connection is more secure; Excellent performance; Live longer; Strong energy dissipation capacity.

Application of Lead Rubber Bearing

LNR-I: As a type of seismic isolators for buildings, the lead rubber bearing is widely used in seismic isolation design and seismic strengthening and reconstruction of bridges, buildings, hydropower projects, building seismic facilities and other civil structures.

LRB-II: LRB bearing is widely used in seismic isolation design and seismic strengthening and reconstruction of bridges, buildings, hydropower projects, building seismic facilities and other civil structures.

Specification of Lead Rubber Bearing

Specifications (diameter, mm)	/	D400	D500	D600	D700	D800	D900	D1000	D1100	D1200	D1300	D1400	D1500	D1600
Shear modulus G	Mpa	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4
Total height of bearing H	mm	178	201	223	267	302	353	390	435	462	490	501	501	501
Total thickness of rubber layer Tr	mm	74	93	111	129	147	166	184	202	221	240	240	240	240
First form factor S1	/	≥15	≥15	≥15	≥15	≥15	≥15	≥15	≥15	≥15	≥15	≥15	≥15	≥15
Second form factor S2	/	≥5	≥5	≥5	≥5	≥5	≥5	≥5	≥5	≥5	≥5	≥5	≥5	≥5
Vertical compression stiffness Kv	kN/mm	1400	1800	2100	2600	3100	3800	4700	5500	6200	7100	8600	10400	12300
Horizontal equivalent stiffness（Shear strain 100%）Keq	kN/mm	0.68	0.84	1.02	1.19	1.36	1.53	1.7	1.88	2.05	2.21	2.56	2.94	3.34
Yield force Q	kN	1.04	1.27	1.58	1.89	2.08	2.37	2.69	3	3.18	3.47	4.06	4.7	5.11
Stiffness after yield Kd	kN/mm	27	40	63	90	106	141	182	227	251	304	362	425	425
Stiffness before yield Ki	kN/mm	0.68	0.84	1.02	1.19	1.36	1.53	1.7	1.87	2.04	2.2	2.55	2.93	3.34
Equivalent damping ratio heq	/	23.50%	22.60%	24.00%	24.70%	23.10%	23.90%	24.60%	25.10%	23.90%	24.40%	24.80%	25.20%	23.20%

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0086-18258677687

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info@tiantie.cn

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No. 928 Renmin East Road, Tiantai (317200) Taizhou, Zhejiang, China

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Enhance structural safety with our top-quality seismic isolators. Engineered for seismic resistance, our isolators prevent damage caused by earthquakes. Safeguard your buildings and improve occupant safety. Contact us for reliable seismic protection solutions.