1) Expansion joint shall be set for straight section steel cable bridge with length more than 30m, aluminum alloy or glass fiber reinforced plastic cable bridge with length more than 15m; compensation device shall be set for cable bridge crossing deformation joint of building

(2)電纜橋架轉(zhuǎn)彎處的彎曲半徑，不小于橋架內(nèi)電纜更小允許彎曲半徑，

(2) The bending radius of the cable tray at the turning point shall not be less than the minimum allowable bending radius of the cable in the tray,

更小允許彎曲半徑

Minimum allowable bending radius

1 無(wú)鉛包鋼鎧護(hù)套的橡皮絕緣電力電纜

1. Rubber insulated power cable with lead-free steel sheath

10D

10D

2 有鋼鎧護(hù)套的橡皮絕緣電力電纜

2. Rubber insulated power cable with steel sheath

20D

20D

3 聚氯乙烯絕緣電力電纜

3. PVC insulated power cable

10D

10D

4 交聯(lián)聚氯乙烯絕緣電力電纜

4. Cross linked PVC insulated power cable

15D

15D

5 多芯控制電纜

5. Multi core control cable

10D

10D

注：D為電纜外徑。

Note: D is the outer diameter of the cable.

(3)當(dāng)設(shè)計(jì)無(wú)要求時(shí)，電纜橋架水平安裝的支架問距為1．5～3m；垂直安裝的支架間距不大于2m

(3) When there is no requirement in the design, the spacing between supports for horizontal installation of cable tray is 1.5-3m; the spacing between supports for vertical installation is not more than 2m

(4)橋架與支架間螺栓、橋架連接板螺栓固定緊同無(wú)遺漏，螺母位于橋架外側(cè)；當(dāng)鋁合金橋架與鋼支架同定時(shí)，有相互問絕緣的防電化腐蝕措施

(4) The bolts between the bridge and the bracket and the bolts of the bridge connecting plate are fixed tightly without omission, and the nuts are located outside the bridge; when the aluminum alloy bridge and the steel bracket are the same, there are anti electrochemical corrosion measures for mutual insulation

(5)電纜橋架敷設(shè)在易燃易爆氣體管道和熱力管道的下方，當(dāng)設(shè)計(jì)無(wú)要求時(shí)．與管{首的帚小海距．符合下表的規(guī)定

(5) The cable tray is laid under the flammable and explosive gas pipeline and thermal pipeline. When there is no requirement in the design, the small sea distance between the cable tray and the pipe {head shall meet the requirements in the following table

(6)敷設(shè)在豎井內(nèi)和穿越不同防火區(qū)的橋架，按設(shè)計(jì)要求位置，有防火隔堵措施

(6) The cable tray laid in the shaft and passing through different fire zones shall be provided with fire prevention and blocking measures according to the design requirements

(7)支架與預(yù)埋件焊接周定時(shí)，焊縫飽滿；膨脹螺栓周定時(shí)，選用螺栓適配，連接緊同，防松零件齊全

(7) When the bracket and embedded parts are welded weekly, the weld is full; when the expansion bolt is welded weekly, the bolt is selected for matching, the connection is tight, and the anti loose parts are complete