lead rubber bearing parameter

 1. Overview

Lead core rubber bearings LRB are a type of seismic isolation widely used in structures such as bridges and buildings. It absorbs seismic energy through the shear and compression deformation of the lead core, thereby reducing the seismic response of the structure. This article will analyze the technical parameters of lead rubber bearing.

 2.  Main technical parameters


1). Size and shape

 The size and shape of the lead rubber bearing need to be designed according to specific engineering requirements. Generally speaking, the dimensions of lead rubber bearing include diameter, height, and thickness. The shape is usually circular or square, depending on the application scenario and design requirements of the project.

 2). Lead core material

 The core component of lead rubber bearing is lead core, which is usually made of pure lead or lead alloy. Lead has good shear and compression properties and can effectively absorb seismic energy. At the same time, the manufacturing process of lead cores also needs to meet certain requirements to ensure their mechanical properties and service life.

 3). stiffness  of lead rubber bearing

 The stiffness of a LRB is an important indicator to measure its ability to resist deformation. Under seismic action, supports need to have a certain degree of stiffness to resist seismic forces and protect the safety of the structure. Therefore, the stiffness of lead core bearings should be designed reasonably according to engineering requirements.

 4). Damping coefficient

 The damping coefficient measures the ability of a support to dissipate energy during vibration. Under seismic action, bearings with larger damping coefficients can better absorb seismic energy, thereby reducing the seismic response of the structure. Therefore, the damping coefficient of the lead core support is also an important parameter in the design process.

 5). Durability

 The service life of lead rubber bearings depends on their durability. During long-term use, the support may be affected by environmental factors such as temperature, humidity, etc., leading to a decrease in its performance. Therefore, in the design and manufacturing process, corresponding measures should be taken to improve the durability of the bearings.



By analyzing the technical parameters of the LRB, we can understand the key factors in its design process. In practical applications, lead rubber bearings should be reasonably selected and designed according to engineering requirements to ensure that they can effectively absorb seismic energy, reduce the seismic response of the structure, and thus improve the safety and stability of the structure.

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