Elements and Calculations Affecting Width of Cable Bridge

電纜橋架寬度B確實(shí)定與電纜任務(wù)的性質(zhì)有關(guān)，由于電力電纜和控制電纜的任務(wù)方式不同，所以電纜橋架寬度普通也有所不同。

Width B of cable bridge is definitely related to the nature of cable task. Because of the different tasks of power cable and control cable, the width of cable bridge is generally different.

電力電纜在橋架內(nèi)普通是單層程度排放，所以其裝置橋架寬度B爲(wèi)：

Power cable in the bridge is generally single-layer emission, so its device bridge width B is:

式中：d1、d2、d3…爲(wèi)橋架內(nèi)各種電纜的外徑，單位爲(wèi)mm。

In formula: d1, d2, d3... For the external diameter of various cables in the bridge frame, the unit is mm.

n1、n2、n3…爲(wèi)上述同種型號(hào)規(guī)格電纜的根數(shù)。

N1, N2, N3... The number of cables of the same type and specifications mentioned above.

k1、k2、k3…爲(wèi)上述電纜放置時(shí)的間距。其值小應(yīng)大于電纜直徑的1/4。

K1, K2, K3... For the spacing of the above cables when placed. The minimum value should be greater than 1/4 of cable diameter.

普通狀況下，控制電纜在橋架內(nèi)既可以程度陳列，也可以疊放。以其橋架內(nèi)控制電纜總截面S不超越電纜橋架總截面S0的40%爲(wèi)準(zhǔn)繩?？刂齐娎|的截面S爲(wèi)：

Under normal conditions, the control cables can be displayed or overlapped in the bridge frame. The criterion is that the total section S of the control cable in the bridge does not exceed 40% of the total section S 0 of the cable bridge. The section S of the control cable is:

式中：S1、S2、S3…爲(wèi)橋架內(nèi)各種控制電纜的截面積(包括護(hù)層局部)單位爲(wèi)mm2;d1、d2、d3…爲(wèi)橋架內(nèi)各種控制電纜的外徑，單位爲(wèi)mm;n1、n2、n3…爲(wèi)上述同種型號(hào)規(guī)格電纜的根數(shù)。

Formula: S1, S2, S3... The cross-sectional area of various control cables in the bridge frame (including the local protective layer) is mm2; d1, d2, D3.. For the external diameter of various control cables in the bridge, the unit is mm; n1, n2, N3.. The number of cables of the same type and specifications mentioned above.

相應(yīng)的控制電纜橋架的寬度爲(wèi)b：

The width of the corresponding control cable bridge is b:

式中：h——電纜橋架的高度，單位爲(wèi)mm。

Type: H - the height of cable bridge in mm.

爲(wèi)保證橋架平直美觀，劃一分歧，它的程度方向載荷形變普通應(yīng)控制在4.0mm以內(nèi)。依據(jù)所選取的電纜橋架寬度和所要求的橋架程度方向載荷形變的大小，查對(duì)相應(yīng)機(jī)構(gòu)方式的橋架荷載的特性曲線，當(dāng)不能滿足形變要求時(shí)，可以適當(dāng)增大橋架側(cè)高或許減小支撐間距，以便滿足裝置要求。

In order to keep the bridge straight and beautiful and divide into different parts, the degree and direction of load deformation should be generally controlled within 4.0 mm. According to the width of the selected cable bridge and the load deformation in the required direction of the degree of the bridge, the load characteristic curve of the corresponding mechanism mode of the bridge can be checked. When the deformation requirement can not be met, the side height of the bridge can be appropriately increased or the spacing of the support can be reduced to meet the requirements of the device.

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