GJQZ type damping ball bearings, finished manufacturers, fixed GJQZ ball bearing type damping provided by Hao-engineered rubber. GJQZ type damping ball bearings, finished manufacturers, fixed GJQZ ball bearing type damping is less Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) 2014 has been newly upgraded introduced changes in environmental conditions in the short term Therefore, in the daily inspection usually 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 inspection report shall include the following main elements: general overview of inspection, including the basic situation of bridge bearings, the organization GJQZ type truss damping ball bearing checking, time, Beijing and inspection process and so on. 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 parts or the whole of repair, strengthen or suggestions motion replacement. 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. Generally following the earthquake three microseismic basically do not feel it, and firecrackers almost, 3-5 in the earthquake will be able to feel out, bearing steel grid becomes weak or small earthquake or tremor felt earthquakes GJQZ steel structural damping steel ball bearings, 5-7 will cause damage, and called the strong earthquake or the earthquake or the devastating earthquake, more than 7 earthquake is a big earthquake. Relationship between the level of earthquake intensity earthquake released energy. Steel truss bearing intensity indicates a strong level of vibration earthquake, in 1980 the State Seismological Bureau has promulgated the "China Seismic Intensity Scale 1980" will be divided into 12-degree intensity, steel truss bearing a region The basic formula seismic fortification intensity values ??in the area for 50 years beyond the 10% probability of an earthquake of intensity, or 475 years of a seismic intensity. Roughly corresponding relations epicentral intensity and magnitude, in the form of seismic waves, seismograph wave propagation from the source to four weeks, according to the different position of the earth's crust in the spread of seismic waves is divided into body waves propagating inside the Earth's crust and surface waves in the surface of the spread, body wave, body wave is divided into two kinds of longitudinal and transverse waves. Longitudinal wave damping fixed GJQZ type ball bearings, steel truss bearing from the source to the surrounding compression wave propagation, also known as the P-wave, the vibration characteristics of the propagation direction is consistent with the direction of the medium wave, short cycle longitudinal wave amplitude Small, slow-wave propagation depth, speed of propagation within the crust is generally 200-1400m / s.