Steel bearings _ units _ reasonable production process seismic fixed steel roof bracket is provided by Hao-engineering rubber. Steel bearings _ units _ craftsmanship reasonable fixed steel roof seismic bearings are Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) 2014 年 launched a new upgrade changes in environmental conditions in the short term less one-way corridor sliding steel bearings, it is usually in the daily inspection remove it. However, when the results of the comprehensive determination of periodic inspection, weather conditions, the bridge features steel truss bearing status has become necessary items. Special examination should be based on damaged condition and the nature of bridge bearings, bearing steel grid using field test equipment and other auxiliary test checks bearing steel grid to analyze the status quo, forming a conclusion. Steel truss bearing special examination report shall include the following main elements: general overview of inspection, including the basic situation of bridge bearings, the organization checks, time, Beijing and inspection processes. Steel truss bridge bearing bearing describe the current state of technology, including project and methods sausage investigation, testing and inspection, testing and analysis of data and evaluation of the technical condition of the bridge abutment. Detailed description of the extent of damage and the cause of the examination site and proposed bridge bearing structural components or whole seismic fixed steel roof bearing repair, strengthen or replace the advice motion. Typical defects and diseases and diseases of the photo and description. The term describes the application of professional standards defective condition, indicating the defect site, type, nature and scope. 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 bearing steel grid base near contentment cement mortar base changes, even if i Macau telescopic device does not appear at height and other reasons beyond bearing steel grid should also be checked. On the curved bridge, bridge or parallel polyline cool occasions, due to the installation of steel truss bearing a different direction and the only direction is likely to cause bearing damage and abnormal sound problem, so deal with right bearing steel grid installation directions for further examination to verify. Side span is significantly shorter compared with the mid-span continuous girder bridge, bridge of the bevel and 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 corridor bi sliding steel bearing, should conduct a detailed examination. Under the telescopic device from dust at the opportunity and the water leak, and cause corrosion of steel bearing steel truss members, particularly the use of antifreeze in areas such effects will be greater, while leaking bearing steel grid base cement mortar aging, cracking and crushing is one of the reasons for the use of steel truss bearing damage. 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.