How are bridges connected from different angles? In order to better use the cable tray, you should take a look at this problem. The Shandong cable tray manufacturer will explain it to you.
The connectors between the straight line section of the bridge and between the straight line section and the elbow and transformer shall be the connectors provided by the bridge manufacturer. The thickness of the cold-rolled steel plate of the connector shall not be less than that of the cold-rolled steel plate of the bridge. The socket shall be flat without distortion, protrusion and dent. The semicircle head galvanized bolt used for connection shall be on the inside of the bridge. The length of the bolt shall be appropriate. After tightening, the exposed length shall be 2~5 threads. For horizontally installed cable tray, its straight section tee joint shall be built at 1/4 of the upper and lower positions between two seismic supports as far as possible.
1. Generally, no bridge is made on the construction site. When special circumstances are necessary, the existing cable tray can be used to make non-standard elbow and direct elbow. When restructuring and disconnecting the straight section bridge, natural gas and electric welding cutting shall not be allowed, and special cutting tools shall be used. The modified cable tray must be leveled and painted immediately. The paint color is similar to other cable trays.
2. The expansion joint of the bridge beyond the building shall be set according to the requirements of GB50168 to ensure that the bridge and the cable laid in the bridge can be expanded at will without being damaged when the building expansion does not seriously endanger its own safety. In newly built buildings, the cable tray assembly is generally carried out months or even a year after the reinforced concrete project, and the concrete shrinkage is slowly reduced. Generally, the expansion amount shall not exceed the width L of the expansion joint of the building.
3. If it is found or learned from the civil engineering enterprise that the expansion joint of the building is likely to exceed L, the expansion shall be solved according to the actual situation. There are relatively long straight sections on the few sides of the bridge beyond the expansion joint, which should be higher than 30m, or the sum of straight sections on both sides of the expansion joint is 30m, and there is no level or vertical bending in the middle. This is conducive to reserving the expansion capacity of cable (or cable) in the bridge, which should exceed the expansion joint width L.
That's all for the above questions. If you have any questions about the use of cable tray, please come to our website http://www.sddlqj.cn Consult!