大跨距橋架適合哪些場所？

　　What places are suitable for large-span cable trays?

　　在電纜橋架的應(yīng)用中，我們經(jīng)常會遇到一種特殊需求：電纜敷設(shè)跨度大、支撐點少。比如一些大空間廠房、倉庫、隧道、站廳，這時普通橋架往往承載不足或容易變形，就需要使用大跨距橋架。那么，大跨距橋架究竟是什么？它又適合在哪些場所應(yīng)用呢？

　　In the application of cable trays, we often encounter a special requirement: large cable laying span and few support points. For example, in some large space factories, warehouses, tunnels, and station halls, ordinary cable trays often have insufficient load-bearing capacity or are prone to deformation, requiring the use of large-span cable trays. So, what exactly is a large-span bridge? Where is it suitable for application?

　　什么是大跨距橋架？

　　What is a large-span bridge frame?

　　大跨距橋架，顧名思義，就是適用于跨度較大的電纜支撐結(jié)構(gòu)。常見橋架的支撐點間距一般在 1.5m~2m，而大跨距橋架則能輕松實現(xiàn) 3m甚6m 的支撐跨度。

　　As the name suggests, large-span cable trays are suitable for cable support structures with large spans. The spacing between support points for common cable trays is generally between 1.5m and 2m, while large-span cable trays can easily achieve a support span of 3m or even 6m.

　　其主要特點有：

　　Its main features are:

　　結(jié)構(gòu)加固：通常采用厚壁鋼材或鋁合金，邊梁和底板強度更高。

　　Structural reinforcement: Thick walled steel or aluminum alloy is usually used, with higher strength for edge beams and bottom plates.

　　承載力強：能夠承受多根大截面電力電纜同時敷設(shè)。

　　Strong bearing capacity: able to withstand the simultaneous installation of multiple large cross-sectional power cables.

　　變形小：在長跨度支撐下不易下沉或扭曲。

　　Small deformation: It is not easy to sink or twist under long-span support.

　　安裝簡便：減少支撐點數(shù)量，縮短施工周期。

　　Easy installation: reduce the number of support points and shorten the construction period.

　　大跨距橋架適合的場所

　　Suitable locations for large-span cable trays

　　1. 大型工業(yè)廠房

　　1. Large industrial plants

　　在重工業(yè)、機械制造、冶金、化工等廠房里，廠區(qū)跨度大、空間開闊。如果采用普通橋架，需要頻繁設(shè)置支撐點，既增加施工量，又影響美觀和操作空間。而大跨距橋架能夠?qū)崿F(xiàn)長距離懸空布線，滿足大截面動力電纜的集中敷設(shè)需求。

　　In factories such as heavy industry, machinery manufacturing, metallurgy, and chemical engineering, the factory area has a large span and spacious space. If ordinary cable trays are used, frequent support points need to be set up, which not only increases construction volume but also affects aesthetics and operational space. And large-span cable trays can achieve long-distance suspended wiring, meeting the centralized laying requirements of large section power cables.

　　2. 電廠、變電站

　　2. Power plants and substations

　　電廠和變電站內(nèi)，電纜數(shù)量多、規(guī)格大，而且常常需要穿越寬闊的空間。大跨距橋架強度高、穩(wěn)定性好，能夠保證電纜在高負荷運行下可靠。

　　In power plants and substations, there are many cables with large specifications, and they often need to pass through wide spaces. The large-span bridge has high strength and good stability, which can ensure the safety and reliability of cables under high load operation.

　　3. 交通樞紐與公共建筑

　　3. Transportation hubs and public buildings

　　地鐵站、火車站、機場候機廳、展覽館等大型公共建筑，通常空間高大，布線需要跨越大跨度的站廳或走廊。使用大跨距橋架不僅減少支架數(shù)量，還能提升整體美觀度。

　　Large public buildings such as subway stations, train stations, airport waiting halls, exhibition halls, etc. usually have large spaces, and wiring needs to span large-span station halls or corridors. Using large-span cable trays not only reduces the number of supports, but also enhances the overall aesthetics.

　　4. 隧道、管廊工程

　　4. Tunnel and pipe gallery engineering

　　市政管廊或交通隧道內(nèi)，電纜往往需要沿壁長距離敷設(shè)，支撐點間距較大。如果用普通橋架，容易出現(xiàn)變形或電纜集中受力不均的問題。大跨距橋架則能保持結(jié)構(gòu)穩(wěn)定，適應(yīng)復(fù)雜環(huán)境。

　　In municipal utility tunnels or traffic tunnels, cables often need to be laid along the walls for a long distance, with a large spacing between support points. If ordinary cable trays are used, it is easy to cause deformation or uneven stress distribution of cables. Large span cable trays can maintain structural stability and adapt to complex environments.

　　5. 倉儲與物流中心

　　5. Warehousing and Logistics Center

　　現(xiàn)代物流倉庫和立體貨架庫，內(nèi)部層高大、跨度寬。布線若采用傳統(tǒng)橋架，支撐繁瑣且影響堆垛作業(yè)。而大跨距橋架能減少支架布設(shè)，讓空間利用更。

　　Modern logistics warehouses and three-dimensional shelving warehouses have tall internal layers and wide spans. If traditional cable trays are used for wiring, the support is cumbersome and affects stacking operations. And large-span cable trays can reduce the number of brackets and make space utilization more efficient.

　　不適合的場所

　　Inappropriate places

　　雖然大跨距橋架承載能力強，但并非所有環(huán)境都適用：

　　Although large-span cable trays have strong load-bearing capacity, they are not suitable for all environments

　　弱電系統(tǒng)：對屏蔽、防塵要求高的場所，更適合槽式或全封閉橋架。

　　Weak current system: For places with high requirements for shielding and dust prevention, it is more suitable for trough or fully enclosed cable trays.

　　小空間布線：若環(huán)境空間狹小，使用大跨距橋架反而不經(jīng)濟。

　　Small space wiring: If the environmental space is small, using large-span cable trays may not be economical.

　　強腐蝕性環(huán)境：需要配合不銹鋼或特殊防腐處理，否則容易縮短壽命。

　　Strong corrosive environment: It is necessary to cooperate with stainless steel or special anti-corrosion treatment, otherwise it is easy to shorten the service life.

　　總結(jié)

　　summary

　　大跨距橋架的優(yōu)勢在于 承載力強、跨度大、施工簡便，特別適合 大型廠房、電廠變電站、交通樞紐、隧道管廊以及現(xiàn)代倉儲建筑。它在滿足電纜集中敷設(shè)需求的同時，還能減少支撐點布設(shè)，提高施工效率和美觀度。

　　The advantages of large-span cable trays are strong bearing capacity, large span, and easy construction, making them particularly suitable for large factories, power plants, substations, transportation hubs, tunnel corridors, and modern storage buildings. It can meet the requirements of centralized cable laying while reducing the number of support points, improving construction efficiency and aesthetics.

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