哪些電纜不能鋪設(shè)在同一個電纜橋架中？

Which cables cannot be laid in the same cable tray?

《民用建筑設(shè)計規(guī)范》規(guī)定，不同電壓、不同用途的電纜不得敷設(shè)在同一層電纜橋架上：

The code for design of civil buildings stipulates that cables with different voltages and different purposes shall not be laid on the same cable tray:

1)kV以上和1kV以下的電纜。

1) Cables above kV and below 1KV.

2)雙電路從同一路徑向主要負載供電。

2) The two circuits supply power to the main load from the same path.

3)應(yīng)急照明和其他照明用電纜。

3) Cables for emergency lighting and other lighting.

4)強弱電電纜。因條件需要安裝在同一層橋架上時，應(yīng)采用隔板隔開。

4) Strong and weak current cables. If it is required to be installed on the bridge of the same floor due to conditions, partition plates shall be used for separation.

對電纜橋架的剛度有什么要求？

What are the requirements for the rigidity of cable tray?

1、電纜橋架熱鍍鋅防腐處理的技術(shù)質(zhì)量應(yīng)符合質(zhì)量規(guī)定。

1. The technical quality of hot galvanizing and anti-corrosion treatment of cable tray shall comply with the quality regulations.

2、托盤、梯子需要承受短期附加集中載荷時，應(yīng)符合電纜橋架的相應(yīng)規(guī)定。

2. When the tray and ladder need to bear the short-term additional concentrated load, it shall comply with the corresponding provisions of the cable tray.

3、生產(chǎn)廠家應(yīng)給出各種型號規(guī)格的托盤、梯子在不同載荷和支吊架跨度下的撓度值。

3. The manufacturer shall provide the deflection values of trays and ladders of various models and specifications under different loads and support and hanger spans.

4、對鋅鎳中金等經(jīng)過防腐處理的電纜橋架，要進行試驗才能獲得驗證結(jié)果，要有明確的技術(shù)指標和檢測方法。

4. For the cable trays that have undergone anti-corrosion treatment, such as zinc, nickel, gold, etc., the verification results can only be obtained through tests, and there should be clear technical indicators and detection methods.

5、工廠應(yīng)備有各種型號的托盤、電纜橋架梯，以及不同跨度和允許均布載荷的關(guān)系曲線或數(shù)據(jù)表。托盤和梯子在額定均勻載荷下的相對撓度不應(yīng)小于1/200。

5. The factory shall be equipped with trays and cable tray ladders of various models, as well as relationship curves or data sheets of different spans and allowable uniform load. The relative deflection of tray and ladder under rated uniform load shall not be less than 1/200.

如何處理濟南電纜橋架的伸縮縫？

How to deal with the expansion joint of Jinan cable tray?

跨越伸縮縫的橋梁少一側(cè)有較長的直段，應(yīng)超過30m，或伸縮縫兩側(cè)的橋梁總長度為30m，且無水平或垂直彎曲中間。為了在橋架中留出電纜（或電線）的伸縮余量，該余量應(yīng)大于伸縮縫的寬度L。

At least one side of the bridge crossing the expansion joint has a long straight section, which should exceed 30m, or the total length of the bridge on both sides of the expansion joint is 30m, and there is no horizontal or vertical bending middle. In order to reserve expansion allowance for cables (or wires) in the bridge, the allowance shall be greater than the width l of the expansion joint.

當伸縮縫處橋下有足夠空間時，可將橋斷開。斷開距離B應(yīng)大于建筑物伸縮縫的寬度L，并且要保證所有電纜都能隨伸縮縫伸縮而不受損壞，滿足伸縮要求。，要求電纜的彎曲半徑R較小。

When there is enough space under the bridge at the expansion joint, the bridge can be disconnected. The disconnection distance b shall be greater than the width l of the expansion joint of the building, and all cables shall be able to expand with the expansion joint without damage, meeting the expansion requirements., The bending radius r of the cable is required to be small.

若伸縮縫處橋下空間不足，應(yīng)在伸縮縫附近設(shè)置加寬直通，加寬直通規(guī)格應(yīng)能留有足夠的電纜伸縮余量（大于L），同時它可以滿足電纜擴展所需的更小的彎曲半徑。伸縮縫兩側(cè)加寬直通間的距離B可以略大于伸縮縫的寬度L。

If the space under the bridge at the expansion joint is insufficient, a widened straight through shall be set near the expansion joint. The widened straight through specification shall be able to reserve enough cable expansion allowance (greater than l), and it can meet the smaller bending radius required for cable expansion. The distance b between the widened straight lines on both sides of the expansion joint can be slightly greater than the width l of the expansion joint.

當伸縮縫水平方向沒有空間，又無法直通安裝加寬件時，可適當移伸縮縫兩側(cè)。當兩側(cè)各安裝一個加寬直通，仍不能滿足電纜伸縮量足夠和彎曲半徑小的要求時，可在伸縮接頭兩側(cè)安裝對稱連接的兩個加寬直通。伸縮縫兩側(cè)橋梁之間的距離B仍略大于L。

When there is no space in the horizontal direction of the expansion joint and it is impossible to install the widening piece directly, it can be moved to both sides of the expansion joint appropriately. When one widening straight through is installed on both sides, and the requirements for sufficient cable expansion and small bending radius cannot be met, two widening straight through symmetrically connected can be installed on both sides of the expansion joint. The distance b between the bridges on both sides of the expansion joint is still slightly greater than L.

以上就是問題解答的相關(guān)內(nèi)容了，希望能夠幫助到大家，如對這一問題還存在任何疑問，都歡迎關(guān)注我們網(wǎng)站http://m.ymmgjx.net并咨詢我們的工作人員，將竭誠為您服務(wù)。

The above is the relevant content of the question answer. I hope it can help you. If you still have any questions about this problem, you are welcome to follow our website http://m.ymmgjx.net And consult our staff, will serve you wholeheartedly.