China is currently the new roads and bridges, in addition to the special requirements of individual bridges, almost all use of laminated rubber bearings and pot bearings. Meanwhile, along with manufacturing and processing increasing levels of bridge support in solving bearing the pace of research and development continues to accelerate with a special user, such as adjustable pot bearings, tension and compression bearing drink dedicated to the earthquake zone used on the bridge basin seismic rubber bearings, spherical bearings and seismic LRB, these are almost always the patented product, it can be expected soon will be valid for use on bridge engineering, and seismic grid rubber pads of bridge engineering quality control work has also been strengthened damping rubber pad grid, experimental study of bridge supports dynamic performance is also emerging to make bridge bearings better meet the needs of highway bridge construction. When designing bearing steel truss while rubber pads, must fully understand the entire bridge abutment in the role, bridge bearings is important to connect the upper part and the lower part of the structure of the bridge structure, so the bridge bearings must have the following The main role and function requirements. (1) must be able to support lateral loads from dead loads, live loads, such as the vertical load and seismic and wind to pass the upper structure, and the safe and reliable courier to the substructure (piers, Taiwan). (2) the horizontal displacement of the upper structure must be adapted to the live load and temperature changes and the pivot angle produced by the deflection displacement. (3) In order to improve the seismic performance of the bridge at the time of the earthquake, the bearing should have a damping and isolation of new energy, that is, under seismic and wind (wind station) role, with great changes to adapt to the instantaneous position of the effect. (4) with the installation, replacement and maintenance convenience. (5) has a buffering action under the effect of the vehicle. For a multi-multi-girder bridge girder bridge abutment by reducing the number, to simplify stand, making it clear structural system characteristics. Denser arrangement of the main beam structure, the support portion is provided in the beam in order to reduce the number of carrier, which is to make clear the structure of the system approach. To overcome the negative reaction force bearing arrangement (1) for box girder bridge, with a single seat form. In addition, the width of the narrow single-girder bridge, the use will have a large negative reaction force when the two grid rubber pad holder, must pay special attention. (2) the use of the balance weight (concrete weights). (3) changes in the location or use the fulcrum bracket and so on. For overcoming the negative reaction force bearing arrangement, if the fulcrum negative reaction force, the structural part of the bridge will have unpredictable stress, it is necessary to take special measures to stand, therefore, should consider limiting the negative reaction force generated by the structure of the system . Hao-engineered rubber, steel truss rubber pads, rubber pad grid provided by Hao-engineering rubber. Search for "grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, spherical steel bearing" fly suppliers, network operators choose to have a full alliance Certified: Engineering Rubber Co., Ltd. Hengshui HaoTong (www.htgcxj.com), trustworthiness and reliability, "business alliance customer service" on page now click on live chat with us now!