How are bridges connected at different angles? Now let's take you to know!

橋架直線段之間、直線段與彎通、變徑直通之間的連接件，應采用橋架制造廠配套的連接件。連接件薄鋼板厚度不應小于橋架薄鋼板厚度。

The connectors between the straight-line sections of the bridge, between the straight-line section and the elbow and reducer shall be the connectors matched by the bridge manufacturer. The thickness of thin steel plate of connector shall not be less than that of bridge.

接口應平整，無扭曲、凸起和凹陷，連接用的半園頭鍍鋅螺栓，半園頭應在橋架內側，螺栓長度適當，擰緊之后，露出長度以2～5牙為宜。水平安裝的橋架，其直線段的連接頭，應盡量設在兩個支吊架之間的1/4左右處。

The interface shall be flat without distortion, bulge and depression. The half round head galvanized bolt for connection shall be on the inner side of the bridge, and the bolt length shall be appropriate. After tightening, the exposed length shall be 2 ~ 5 teeth. For the horizontally installed bridge, the connector of the straight section shall be set at about 1 / 4 between the two supports and hangers as far as possible.

一般情況下不在施工現場制作橋架。由于特殊原因時，可利用現有的橋架改制非標準彎通和變徑直通。

Generally, the bridge is not made on the construction site. For special reasons, the existing bridge can be used to restructure non-standard elbow and variable diameter straight through.

改制和切斷直線段橋架時，均不得用氣、電焊切割，應用專用切割工具。改制的橋架一定要平整，及時補漆，面漆顏色應與其它橋架相近。

When reforming and cutting the straight-line bridge, gas and electric welding shall not be used for cutting, and special cutting tools shall be used. The restructured bridge must be flat and repaired in time, and the finish color should be similar to that of other bridges.

橋架跨越建筑物的伸縮縫處，按GB50168規定，應設置伸縮縫，保證橋架及敷設在橋架內的電纜在建筑物伸縮不危及其本身時能自由伸縮，不受損壞。

At the expansion joints where the bridge crosses the building, expansion joints shall be set according to the provisions of GB50168 to ensure that the bridge and the cables laid in the bridge can expand freely without damage when the expansion of the building does not endanger itself.

因為新建建筑物里，橋架安裝一般都在混凝土結構工程完成數月甚一年之后進行，混凝土收縮逐漸減小。伸縮量一般不會超過建筑物伸縮縫寬L。

Because in new buildings, the bridge installation is generally carried out months or even a year after the completion of concrete structure engineering, and the concrete shrinkage decreases gradually. Generally, the expansion amount will not exceed the expansion joint width l of the building.

若發現或從土建單位了解到建筑物伸縮縫較大有可能超過L時，應按實際做好伸縮處理。

If it is found or learned from the civil engineering unit that the expansion joint of the building is large and may exceed L, the expansion treatment shall be carried out according to the actual situation.

要跨越伸縮縫的橋架少一側有較長的直線段，宜超過30m，或伸縮縫兩側直線段橋架相加有30m，中間無水平或垂直彎通。以便于在橋架中留電纜(或電線)的伸縮余量，這個余量應大于伸縮縫寬L。

At least one side of the bridge to cross the expansion joint has a long straight section, which should be more than 30m, or the sum of the straight sections on both sides of the expansion joint is 30m, and there is no horizontal or vertical bend in the middle. In order to reserve the expansion allowance of cable (or wire) in the bridge, this allowance shall be greater than the expansion joint width L.

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