近年來，橋架已在有的工程中加以應(yīng)用，具有美觀，重量輕、安裝方便等優(yōu)點(diǎn)。那么您知道山東電纜橋架設(shè)計(jì)的相應(yīng)系統(tǒng)組成內(nèi)容是怎樣的嗎？

In recent years, the bridge has been applied in some projects, with the advantages of beauty, light weight and convenient installation. Do you know what the corresponding system composition of Shandong cable bridge design is?

橋架結(jié)構(gòu)

Bridge structure

電纜橋架分為槽式、托盤式和梯架式等結(jié)構(gòu)，由支架、托臂和安裝附件等組成。(參見圖1所示)，選型時(shí)應(yīng)注意橋架的所有零部件是否符合系列化、通用化、標(biāo)準(zhǔn)化的成套要求。

The cable tray is divided into trough type, tray type and ladder type structures, which are composed of brackets, brackets and installation accessories. (as shown in Fig. 1), during type selection, attention shall be paid to whether all parts of the bridge meet the requirements of serialization, generalization and standardization.

建筑物內(nèi)橋架可以獨(dú)立假設(shè)，也可以附設(shè)在各種建(構(gòu)）筑物和管廊支架上，應(yīng)體現(xiàn)結(jié)構(gòu)簡單，造型美觀、配置靈活和維修方便等特點(diǎn)，全部零件均需進(jìn)行鍍鋅處理，安裝在建筑物外露天的橋架，如果是在鄰近海邊或?qū)儆诟g區(qū)，則材質(zhì)須具有防腐、耐潮氣、附著力好，耐沖擊強(qiáng)度高的物性特點(diǎn)。

The bridge in the building can be assumed independently or attached to various buildings (structures) and pipe gallery supports. It should reflect the characteristics of simple structure, beautiful appearance, flexible configuration and convenient maintenance. All parts should be galvanized. If the bridge is installed outside the building in the open air, if it is near the sea or belongs to the corrosion area, the material must have the physical characteristics of anti-corrosion, moisture resistance, good adhesion and high impact strength.

橋架的荷載

Load of bridge

電纜橋架的荷載分為荷載、動(dòng)荷載和附加荷載。

The load of cable tray is divided into load, dynamic load and additional load.

靜荷載是指敷設(shè)在電纜橋架內(nèi)的電纜種類、根數(shù)、每根的外徑重量／單位長度，按電纜敷設(shè)的不同路由分別列表統(tǒng)計(jì)。

Static load refers to the type and number of cables laid in the cable tray, and the outer diameter weight / unit length of each cable. It is listed and counted according to different routes of cable laying.

動(dòng)荷載是指電纜橋架安裝和維護(hù)過程中施工維修人員的重量。對(duì)于輕型電纜橋架，一般不考慮動(dòng)荷載，即不允許在橋架上站(行）人，如果需要考慮站人，則應(yīng)將跨距適當(dāng)縮小。附加荷載僅在室外是指冰雪、風(fēng)和電磁力所形成的荷載，它與安裝場所的地區(qū)自然氣象條件和帶電體的性質(zhì)有關(guān)，設(shè)計(jì)中應(yīng)根據(jù)各種條件加以計(jì)算。

Dynamic load refers to the weight of construction and maintenance personnel during the installation and maintenance of cable tray. For light cable tray, dynamic load is generally not considered, that is, people are not allowed to stand (walk) on the tray. If people need to be considered, the span should be appropriately reduced. The additional load only refers to the load formed by ice, snow, wind and electromagnetic force. It is related to the natural meteorological conditions of the installation site and the nature of the charged body. It shall be calculated according to various conditions in the design.

選用橋架的步驟

To select a bridge

(1)確定橋架寬度、層數(shù)、支撐點(diǎn)的型式和間距、以及電纜在各層橋架上的分布。

(1) Determine the bridge width, number of layers, type and spacing of support points, and distribution of cables on each layer of bridge.

(2）計(jì)算每層電纜的均布荷載（ｋN/m２)，初步確定橋架的型號(hào)、規(guī)格。

(2) Calculate the uniformly distributed load (KN / m2) of each layer of cable, and preliminarily determine the model and specification of the bridge.

(3)按大的電纜總均布荷載值來驗(yàn)算橋架強(qiáng)度。驗(yàn)算式如下：

(3) The bridge strength shall be checked and calculated according to the large total uniformly distributed load value of the cable. The checking formula is as follows:

Q使用＝ｑ1+q2

Q use = Q1 + Q2

式中：q１-－電纜的均布荷載（各層的均布荷載中取大值）(kN/

Where: Q1 - uniformly distributed load of the cable (the greater of the uniformly distributed loads of each layer) (KN)/

m2)，均布荷載是托盤、梯架或電纜槽的荷載；

M2), uniformly distributed load is the load of tray, ladder or cable tray;

q2－－考慮電纜敷設(shè)或檢修時(shí)，人的重量等效的均布荷載（kＮ／

Q2 - uniform load (KN /) equivalent to the weight of people during cable laying or maintenance

m2)，q2值的計(jì)算，人的重量一般按ｐ＝90kg計(jì)。

M2), Q2 value, and the weight of a person is generally calculated as P = 90kg.

表示集中荷載和均布荷載的彎距如圖2

Represents the bending distance of concentrated load and uniformly distributed load, as shown in Figure 2

按大彎距相等的條件折算:

Converted according to the condition of equal large bending distance:

令pι/4=ｑ2ι2/8則q2=2p/ι

Let p ι/ 4=ｑ2 ι 2 / 8, then Q2 = 2P/ ι

∵P=90kg

∵P=90kg

∴q２＝180／ι

∴q２＝180／ ι

式中：P--1人的荷載(kg)

Where: P -- load of 1 person (kg)

ι－-１個(gè)支撐點(diǎn)間距（若支點(diǎn)間距不等時(shí)取大值)（m)

ι－- Spacing of one support point (if the spacing of support points is not equal, the larger value shall be taken) (m)

q2－-1人的等效均布荷載（kｇ/m）

Q2 - equivalent uniformly distributed load of 1 person (kg / M)

根據(jù)上述初步確定的橋架型號(hào)、規(guī)格及支點(diǎn)間距，查閱生產(chǎn)廠家的樣本資料，反復(fù)核查間距和橋架型號(hào)，直滿足負(fù)荷要求為止。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://m.ymmgjx.net進(jìn)行咨詢了解吧。

According to the above preliminarily determined bridge model, specification and fulcrum spacing, refer to the manufacturer's sample data, and repeatedly check the spacing and bridge model until the load requirements are met. For more information, please visit our website http://m.ymmgjx.net Consult and understand.