Shandong cable bridge we have not seen strange in life, enough to explain its wide range of application, but about the product, we still have many aspects of the content is not very understanding, such as the use of the bridge expansion joint, what is this used?
When the cable tray enters the construction site, the following information shall be submitted: factory certificate of products, regular inspection report of provincial and municipal quality supervision station and relevant technical appraisal documents, etc. The thickness of cable tray plate shall meet the relevant requirements. The coating surface of the hot-dip galvanized cable bridge should be uniform, without over-burning, hanging ash, local ungalvanized defects. Electrostatic spraying should be flat, smooth, uniform, no skin, no bubble, bubble bridge itself should be flat, no distortion, the inner wall should be smooth, no burr bridge weld surface should be uniform, no leakage welding, cracks, burn through and other defects.
Cable tray expansion joint is mainly composed of left cable tray, right cable tray, internal expansion connecting plate, external expansion connecting plate, soft braided copper wire, ground screw, left cover plate of cable tray, and right cover plate of bridge.
Shandong cable bridge is made of metal, which is relatively strong in thermal expansion and contraction. If there is no expansion joint, the connection of the bridge joint will not be very tight, especially the super long bridge. The super long distance cable bridge is very common in high-rise and super high-rise buildings. These ultra-long cable Bridges are more seriously affected by thermal expansion and contraction than Bridges in ordinary buildings. If not handled properly, it can pose a security threat. Therefore, the cable bridge needs to be installed expansion joint.
In the process of laying shandong cable bridge, it is inevitable to encounter the special environment of vibration of expansion joints and settlement joints of buildings, causing damage. Cable tray installation provisions, steel cable tray straight section more than 30m, aluminum alloy or glass fiber reinforced plastic cable tray more than 15m, there should be expansion joints, expansion joints should be used when connecting; The expansion joint should be set at the place where the cable bridge spans the expansion joint of the building. When the bridge is stretched horizontally, it is necessary to install expansion joints to prevent the building from stretching horizontally; When the cable tray is subjected to vertical settlement, expansion joints need to be installed to prevent the building from sinking.
What is the expansion joint of shandong cable bridge? After the above understanding, it can be seen that the expansion joint plays a large role in shandong cable bridge, so to better use and construction, we must learn more to pay attention to. For more information, visit www.ezxiaoyuan.com.