如何更好更快的安裝橋架，小編結(jié)合多年的項目實(shí)施經(jīng)驗(yàn)，在這里為大家提供一些優(yōu)化思路和步驟。

How to better and faster install the bridge? Based on many years of project implementation experience, I will provide you with some optimization ideas and steps here.

方向：

Direction:

根據(jù)項目平面圖，結(jié)合空調(diào)管道和電氣管道的設(shè)置、維護(hù)方便、走線的密度，確定電纜橋架的佳走線。在室內(nèi)，應(yīng)盡量沿建筑物的墻、柱、梁、樓板架設(shè)。如果采用綜合管廊，應(yīng)在管道的一側(cè)或上方平行架設(shè)，并應(yīng)考慮引下線和支線，盡量避免交叉。如果沒有其他管架可以借用，則需要自行架設(shè)（支撐）立柱。

According to the project plan, the optimal routing of cable tray shall be determined in combination with the setting, convenient maintenance and routing density of air conditioning pipes and electrical pipes. Indoor, it shall be erected along the wall, column, beam and floor of the building as far as possible. If the integrated pipe gallery is adopted, it shall be erected in parallel on one side or above the pipeline, and the down lead and branch line shall be considered to avoid crossing as far as possible. If there is no other pipe support to borrow, the column shall be erected (supported) by itself.

負(fù)載計算：

Load calculation:

計算濟(jì)南橋架干線剖面上每單位長度的電纜重量。

Calculate the cable weight per unit length on the main section of Jinan Bridge.

確定橋架的寬度：

Determine the width of the bridge:

電纜橋架的類型和規(guī)格、支撐臂的長度、支柱的長度和間距、橋架的寬度和層數(shù)根據(jù)要敷設(shè)的電纜數(shù)量、電纜直徑確定電纜和電纜的間距。

The type and specification of the cable tray, the length of the support arm, the length and spacing of the pillars, the width and layers of the cable tray determine the cable and cable spacing according to the number of cables to be laid and the cable diameter.

確定安裝方式：

Determine the installation method:

根據(jù)場地的設(shè)置條件確定橋架的固定方式，選擇懸掛式、立式、側(cè)墻式或混合式。連接件和緊固件一般成套供貨。另外，根據(jù)橋架結(jié)構(gòu)選擇相應(yīng)的蓋板。

The fixing mode of the bridge shall be determined according to the setting conditions of the site, and the suspension type, vertical type, side wall type or mixed type shall be selected. Connectors and fasteners are generally supplied in complete sets. In addition, the corresponding cover plate shall be selected according to the bridge structure.

畫出電纜橋架的平面圖和剖面圖，還要畫出部分零件的空間圖，并列出材料表。在平行圖上繪出橋架的路由，要注明橋架起點(diǎn)、終點(diǎn)、拐彎點(diǎn)、分支點(diǎn)及升降點(diǎn)的坐標(biāo)或定位尺寸、標(biāo)高。如能繪制橋架敷設(shè)軸側(cè)圖，則對材料統(tǒng)計將更準(zhǔn)確；

Draw the plan and section of the cable tray, and also draw the space map of some parts, and list the material list. Draw the route of the bridge on the parallel diagram, and indicate the coordinates or positioning dimensions and elevations of the starting point, ending point, turning point, branch point and lifting point of the bridge. If the cable tray laying shaft side diagram can be drawn, the material statistics will be more accurate;

此外橋架系統(tǒng)應(yīng)有可靠的電氣連接，并接地。保護(hù)電路連續(xù)性的技術(shù)要求為：在有跨接點(diǎn)處連接電阻應(yīng)小于等于50mΩ；無接點(diǎn)處連接電阻應(yīng)小于等于5mΩ/m。玻璃鋼制橋架根據(jù)需要可沿橋架全長另敷設(shè)專用接地線，其截面積尺寸小可根據(jù)GB7251.1-2013中8.4.3.2.3的規(guī)定，或由用戶與制造商協(xié)商。

In addition, the bridge system shall have reliable electrical connection and grounding. The technical requirements for the continuity of the protection circuit are as follows: the connection resistance at the jumper point shall be less than or equal to 50m Ω; The connection resistance at the point without contact shall be less than or equal to 5M Ω /m. The special grounding wire can be laid along the whole length of the FRP Bridge as required. The small cross-sectional size can be in accordance with the provisions of 8.4.3.2.3 in gb7251.1-2013, or negotiated between the user and the manufacturer.

濟(jì)南橋架內(nèi)纜線垂直敷設(shè)時，在纜線的上端和每間隔1.5米處應(yīng)固定在橋架的支架上。水平敷設(shè)時，在纜線的首、尾、轉(zhuǎn)彎及每間隔3~5米處進(jìn)行固定；

When the cables in Jinan Bridge are laid vertically, they shall be fixed on the support of the bridge at the upper end of the cable and at an interval of 1.5m. During horizontal laying, the cable shall be fixed at the head, tail, turn and every 3~5 meters;

在水平、垂直橋架和垂直線槽中敷設(shè)線時，應(yīng)對纜線進(jìn)行綁扎，4對線電纜以24根為束，25對或以上主干線電纜、光纜及其它信號電纜應(yīng)根據(jù)纜線的類型、纜徑、纜線芯數(shù)分束綁扎，綁扎間距不宜大于1.5米。扣間距應(yīng)均勻，松緊適度。

When laying wires in horizontal and vertical cable trays and vertical trunking, cables shall be bound. 24 pairs of cables shall be used as bundles, and 25 or more pairs of trunk cables, optical cables and other signal cables shall be bound in bundles according to the type, diameter and number of cable cores. The binding spacing shall not be greater than 1.5m. The buckle spacing shall be uniform and the tightness shall be appropriate.

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