[Seismic] ball bearing steel safeguard fundamental principles: Filling technical requirements: (1) filling parts of dust, debris, grease, etc. should be cleaned to ensure the grout and the substrate surface reliable connection. Properly wetted parts of grout according to climatic and site conditions, there should be out of water retention. (2) the top surface of the template and the support cushion stone should take credible measures, grid ball bearings, to prevent leakage of slurry grouting. Template support provided should be above the bottom plate bearing a certain distance. (3) bearing grout material from the center to the surrounding flow, in order to prevent the lower seat pouring false or void. (4) The grout mortar with high strength epoxy. (5) After filling strength of 20MPa, two-way grid ball bearings before you remove grout template. [Seismic] ball bearing steel bearing design and manufacturing, should reduce the replacement process and time; in accordance with the relevant standards, finished grid ball bearings, bearing the implementation of the recommendations of the periodic inspection; before the inspection, the soil around the stand and dust removal. [Seismic steel ball bearing] regularly check: Have a seat bolt cut; 2 seat relative displacement is uniform, one by one record holder displacement volume; 3 to clear debris and dust near the carriage 4 with cotton Carefully wipe the surface of stainless steel wire dust; 5 loosely angle nut, clean oil to prevent rust and tighten the nut; 6 fixed checking and checking seat height changes; 7 were bearing steel rust treatment paint (stainless steel slide except the face). Side plate by five pinch bolts M24 × 2 seismic steel ball bearings. In the middle of the middle of the test to measure the stress bolt patch. According to the analysis bolt pressure on the theoretical value of about rubber lateral force H 2.14 times. Found bolt tension with the calculated values ??are also very similar. Seismic steel ball bearing steel hardness lateral force stress, not the vertical displacement and compression of the rubber itself influence is negligible. Just select the appropriate size of the bezel thickness bolts can ensure the seismic stress ball bearing steel bearing, and can make lateral steel shutter yield stress under appropriate conditions, the loss of carrying capacity, to meet earthquake Consumers energy purposes. By replacing the seismic steel ball bearings and bearing lateral steel shutter to repair earthquake. Seismic ball bearing steel structure details due to seismic steel ball bearings to withstand seismic horizontal force in 0.2P above, then contact stress acting on the bearing plate and the lower middle seat between steel pots significantly greater than the general steel support Block (design horizontal force is 0.1P), for this aspect of the subject by Hertz formula calculation, the intermediate steel flange contact stress, on the other hand to improve the bearing material strength of steel pots, fixed grid ball bearings, and the inner surface of the lower bearing steel basin, surface hardening treatment, in order to improve the surface hardness, the steel bowl to prevent bad eating flange surface of the steel sheet.