In the concrete cross-section of the hinge part of the neck should design the sliding bearing to prevent the portion of FIG Nanjing peeling under high stress, thereby generating tension split, and the split portion in tension will be the direction of the edge, the tension in this section should be reinforced to bear by the configuration, the stress state of the concrete hinges. As can be seen from the figure, the hinge necking ratio, the allowable pressure of the sliding bearings or allowable stress, the greater the angle of the hinge when the sliding bearing hours, through the concrete portion of the deformation of the hinge can rotate. And when the angle is large, the hinge portion of the concrete will crack necked, sharp increase in the pressure of concrete at this time. Sliding bearings under sustained loads may crack due to the deformation and creep of concrete partially closed, making the sliding bearing eccentricity and rotational reaction force is reduced, and therefore, in determining the allowable angle and rotational torque should be based on dead load and live load circumstances be treated differently. Quality non-shrink grout should normally be required to design requirements for standards, but not lower than the standard strength concrete substructure, non-shrink grout recipe involves adding water rate issues when finished two-way grid sliding bearings, plus how much water a direct impact on the amount of construction operations and production, it is generally sliding bearings and should be necessary testing and inspection of finished multi-directional grid sliding bearings, the lower main purpose and method tests. Test, test vessel expansion grout made of plexiglass, with closures, placed in the water, testing methods, to fill a container filled with water slurry height and recorded, then Gaiyan slide support the seat surface of its surface and measuring the expansion of an aqueous slurry, and then calculated the production of sales expansion. When measured, the first drain level adjustment lie flat on the bottom outlet valve closed, will stir the grout poured into the funnel until the lower surface of the primary gauge measuring grid point slide bearing, open the shutter universal grid finished sliding bearings allow free flow of grout, grout all liuwan sliding bearings, become grout consistency. Non-shrink grout quality requirements, non-shrink grout, sliding bearings for the reliable delivery of upper and lower portions of the structure should have sufficient load mild, holes and should be sufficiently reserved dense packing is required. Finished two-way grid sliding bearings | Pakistan grid sliding bearings | direct factory Hengshui Hao-Hao Tong provided by Hengshui Rubber Company. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you work into the brilliant, for a better future!