Steel truss bearing steel truss bearing checking should pay special attention to the site and matters bearing on the activities of steel grid, the displacement situation combined with external temperature checks bearing inspection, the main fulcrum at the end of the beam inspection The end of the beam changes the gap between the abutment. When the steel truss bearing pedestal base near contentment cement mortar change, even if i Macau telescopic device does not appear at other steel truss seat height, seat reasons other than steel grid should also be checked. On the curved bridge, bridge or parallel polyline cool case, since the steel truss bearing mounting direction and the only direction is likely to cause damage to the bearing different and produce abnormal sound damping steel truss bearing problems, so to cope bearing steel grid installation directions for further examination to verify. Side span is significantly shorter compared with the mid-span continuous girder bridge, the bridge of the bevel and the small span of the Bay Bridge because of the possibility of the emergence of negative rebate, but also prone to produce steel truss bearing damage, should be detailed examination. Under the telescopic device from dust leakage at the opportunity and water seismic bearing steel grid, which leads to corrosion of the steel bearing steel truss members, particularly the use of this impact will be greater in areas antifreeze, while leaking Steel truss mount base cement mortar aging, cracking and crushing damage is the use of steel grid bearing one of the reasons. Should also be careful to check. When the steel grid bearing swivel function and mobility features appear failure, most likely caused by damage to the floor steel beams welded parts, so pay special attention to. Steel truss bearing corrosion The main reasons are the components, corrosion and water leaks and flooding generated bad, causing serious rust. Cleaning is not timely, adequate, there dust deposition. Anchor bolts cut, pull out the main reasons are, steel truss bearing set incorrectly, steel truss bearings and other moving range prolapse. Less than double the number of Romanian and buying length. Withstand negative reaction force bearing not set fixtures. Mortar filling is not dense. Mortar base filled voids, cracks sliding bearing steel grid, the base mortar filling voids, mainly due to cracks; no shrinkage mortar filling agent is not dense mix well, good waterproofing and drainage, water immersion internal cracking. Base concrete crushed, peeled, crushed concrete and steel truss bearing the main reason for the release bearing edge distance and lack of Jiaqing reinforced base, lack of stone and steel truss support cushion seat bottom surface dimensions. Mortar filling is not dense. Bottom junction crack or break under the main reason for the long-term effects of heavy traffic load, bearing steel grid floor junction fatigue cracking or breaking. Bolt deformation or fracture. Steel truss supports, design and production of professional manufacturers, steel truss bearing damping provided by Hao-engineered rubber. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) in grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, ball bearings and other steel industry has high visibility, integrity management both, quality of service, welcome to inquire or consult our "Commercial Union Service" it!