Auto Rubber Buffer For GMr horizontal reaction force and installation requirements

- Apr 18, 2019-

The Auto Rubber Buffer For GM is a square of pure rubber. The installation arrangement of the general-purpose rubber cushion block in construction is mainly related to the structural form of the bridge. The principle of GM rubber bumper layout is to facilitate the transmission of the bearing reaction force.


GM rubber bumpers need to adhere to the following principles when installing:


1. When the upper structure is a space structure, the GM rubber buffer block should be able to adapt to the deformation of the bridge along the bridge (X direction) and the transverse bridge direction (Y direction).


2. GM rubber bumpers must be able to reliably transmit vertical and horizontal reaction forces.


3. General Motors rubber bumper blocks should be such that longitudinal displacement, lateral displacement and longitudinal and constant angles due to deformation of the car should be as unconstrained as possible.


4. When the car is on a flat slope, the fixed rubber pad should be placed on the front abutment in the main driving direction;


5. GM rubber bumpers should be placed where there is a large block reaction.


6. Several general-purpose rubber bumpers on the same pier should have similar rotational stiffness.


GM rubber bumper installation steps


(1) Before the installation of the spacer, the installation position of the support should be measured and tested. The installation plane of the support should be parallel with the sliding plane or rolling plane of the support, and the deviation of the parallelism should not exceed 2‰.


(2) Check the relative position of the top and bottom of the movable support before the block is installed.


(3) After the block is installed, the rolling and sliding planes should be horizontal, and the slope of the theoretical plane should be no more than 2‰. The center of the upper and lower plates of the support should be handled with a deviation of no more than 2‰.


(4) In order to ensure the flat installation of the pad, generally, a 20~50mm thick dry and non-shrinking mortar cushion should be built between the bottom of the support and the top surface of the professional name.