Overall action effect analysis shall be conducted for cable tray; At the same time, in-depth analysis shall be carried out for special parts of cable tray under stress.

當電纜橋架在施工和使用期間有多種受力情況時,應分別對各種工況進行結構分析,按其不利的狀況進行設計分析。戶外電纜橋架可能遭遇颶風、雪載荷等偶然作用時,尚應按照現行有關標準的要求進行結構分析。

When there are various stress conditions of cable tray during construction and use, structural analysis shall be carried out for various working conditions respectively, and design analysis shall be carried out according to the most unfavorable conditions. When the outdoor cable tray may encounter accidental effects such as hurricane and snow load, the structural analysis shall be carried out in accordance with the requirements of relevant current national standards.

結構分析的模型應符合下列規定

The model of structural analysis shall comply with the following provisions

結構分析采用的計算簡圖、幾何尺寸、計算參數,邊界條件、網格劃分、結構材料性能指標以及構造措施等應符合產品實際情況

The calculation diagram, geometric dimensions, calculation parameters, boundary conditions, meshing, structural material performance indicators and structural measures adopted in the structural analysis shall comply with the actual situation of the product

結構上的作用應符合實際工況

The action on the structure shall conform to the actual working conditions

各種近似假定和簡化,應具有理論、試驗依據或經工程實踐驗證;計算結果的精度應滿足工程設計的要求。

Various approximate assumptions and simplifications shall have theoretical and experimental basis or verified by engineering practice; The accuracy of calculation results shall meet the requirements of engineering design.

結構分析應符合下列規定

The structural analysis shall comply with the following provisions

滿足力學平衡條件

Meet the mechanical equilibrium conditions

結構分析應采用彈性分析方法。

Elastic analysis method shall be adopted for structural analysis.

結構分析所采用的計算軟件應經考核和驗證,其技術條件應符合現行有關標準的要求。同時對分析結果進行判斷和校核,保證分析結果的合理性。

The calculation software used for structural analysis shall be assessed and verified, and its technical conditions shall meet the requirements of relevant current national standards. At the same time, the analysis results are judged and checked to ensure the rationality of the analysis results.

模型結構分析宜按空間體系進行結構整體分析。體型簡單、規則,傳力明確的空間結構,可沿不同方向分解為平面結構分別進行分析。

The model structure should be analyzed as a whole according to the spatial system. The spatial structure with simple shape, regular shape and clear force transmission can be decomposed into plane structures along different directions for analysis.

托盤、梯架應采用空間體系進行整體分析,并應符合下列計算要求

The tray and ladder shall be analyzed as a whole by using the spatial system and shall meet the following calculation requirements

托盤計算模型單元采用板單元

The pallet calculation model unit adopts plate element

梯架側邊為板時采用板單元.梯架側邊為型鋼時采用梁或實體單元

When the side of the ladder is plate, the plate element is adopted. When the side of the ladder is section steel, the beam or solid element is adopted

計算模型的板單元的網格劃分大小不宜大于10mm。

The mesh size of the plate element of the calculation model should not be greater than 10mm.

電纜橋架結構構件的強度、穩定、長細比計算均應滿足現行標準《鋼結構設計標準》GB50017、《冷彎薄壁型鋼結構技術規范》GB50018的有關規定;不銹鋼電纜橋架結構構件的強度計算應符合現行協會標準《不銹鋼結構技術規程》CECS410的有關規定。

The strength, stability and slenderness ratio calculation of cable tray structural members shall meet the relevant provisions of the current national standard design standard for steel structures (GB50017) and technical code for cold-formed thin-walled steel structures (gb50018); The strength calculation of structural members of stainless steel cable tray shall comply with the relevant provisions of the current association standard technical specification for stainless steel structure cecs410.