(1) It is necessary to ensure that the beam span and the upper swing, the upper swing and the lower swing, the lower swing and the roller, the roller and the bottom plate, and the bottom plate and the supporting stone should be in close contact with each other, and there should be no gaps.
(2) To strengthen the maintenance of the support, the rolling surface of the support must always be kept clean, free of water and dust, snow should be cleared in winter to prevent icing, and good drainage should be maintained around the support, generally in the support The surrounding is made of a semi-circular drainage channel with a high inside and a low outside to drain the water. The bottom of the support should be slightly higher than the pier surface by 2-3mm, and it should be cut into a flowing water slope. The contact surface of the support surface of the pier and the bottom plate, It can also be slightly smaller than the bottom 2-3mm outside the edge to prevent rainwater from entering the bottom.
(3) In order to prevent the support from rusting, the rolling surface of the up and down roller shaft should be wiped regularly, and solid grease or graphite should be regularly coated. In order to prevent foreign matter from entering the movable surface of the support, the support should also have good dust-proof equipment. Measures are particularly important for long-span bridge bearings.
(4) The rolling surface of the bearing is not flat or the roller is worn out for a long time, the bottom plate or the bearing seat is easy to be pressed into grooves, and the roller may also be deformed. This situation should be observed and replaced or planed as soon as possible For repair, when the roller is deformed, it can also be removed and rounded with a lathe, and then installed. During installation, dry hard mortar or resin mortar should be placed between the bottom of the support and the supporting stone to adjust the height of the support.
(5) It is necessary to check frequently to find out whether there is any displacement change of the support. When the deviation exceeds the specified value, the bridge pier of the bridge should be inspected in time and adjusted in time. The four supports of a beam must be on the same level, such as There are four points that are not on the same plane. For example, the beam end is supported by three supports, which will cause uneven forces on the supports, and the supports should be adjusted in time.
(6) The anchor bolts of the support should be kept clean and full of grease. When conditions permit, the anchor bolts should be covered with plastic or iron sheet for protection. The bolt torque should reach a certain specified value.
