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(dāng)電纜橋架在施工和使用期間有多種受力情況時(shí),應(yīng)分別對(duì)各種工況進(jìn)行結(jié)構(gòu)分析,按其不利的狀況進(jìn)行設(shè)計(jì)分析。戶外電纜橋架可能遭遇颶風(fēng)、雪載荷等偶然作用時(shí),尚應(yīng)按照現(xiàn)行有關(guān)標(biāo)準(zhǔn)的要求進(jìn)行結(jié)構(gòu)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(jié)構(gòu)分析的模型應(yīng)符合下列規(guī)定

The model of structural analysis shall comply with the following provisions

結(jié)構(gòu)分析采用的計(jì)算簡(jiǎn)圖、幾何尺寸、計(jì)算參數(shù),邊界條件、網(wǎng)格劃分、結(jié)構(gòu)材料性能指標(biāo)以及構(gòu)造措施等應(yīng)符合產(chǎn)品實(shí)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(jié)構(gòu)上的作用應(yīng)符合實(shí)際工況

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

各種近似假定和簡(jiǎn)化,應(yīng)具有理論、試驗(yàn)依據(jù)或經(jīng)工程實(shí)踐驗(yàn)證;計(jì)算結(jié)果的精度應(yīng)滿足工程設(shè)計(jì)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(jié)構(gòu)分析應(yīng)符合下列規(guī)定

The structural analysis shall comply with the following provisions

滿足力學(xué)平衡條件

Meet the mechanical equilibrium conditions

結(jié)構(gòu)分析應(yīng)采用彈性分析方法。

Elastic analysis method shall be adopted for structural analysis.

結(jié)構(gòu)分析所采用的計(jì)算軟件應(yīng)經(jīng)考核和驗(yàn)證,其技術(shù)條件應(yīng)符合現(xiàn)行有關(guān)標(biāo)準(zhǔn)的要求。同時(shí)對(duì)分析結(jié)果進(jìn)行判斷和校核,保證分析結(jié)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(jié)構(gòu)分析宜按空間體系進(jìn)行結(jié)構(gòu)整體分析。體型簡(jiǎn)單、規(guī)則,傳力明確的空間結(jié)構(gòu),可沿不同方向分解為平面結(jié)構(gòu)分別進(jìn)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(yīng)采用空間體系進(jìn)行整體分析,并應(yīng)符合下列計(jì)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(jì)算模型單元采用板單元

The pallet calculation model unit adopts plate element

梯架側(cè)邊為板時(shí)采用板單元.梯架側(cè)邊為型鋼時(shí)采用梁或?qū)嶓w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(jì)算模型的板單元的網(wǎng)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(jié)構(gòu)構(gòu)件的強(qiáng)度、穩(wěn)定、長(zhǎng)細(xì)比計(jì)算均應(yīng)滿足現(xiàn)行標(biāo)準(zhǔn)《鋼結(jié)構(gòu)設(shè)計(jì)標(biāo)準(zhǔn)》GB50017、《冷彎薄壁型鋼結(jié)構(gòu)技術(shù)規(guī)范》GB50018的有關(guān)規(guī)定;不銹鋼電纜橋架結(jié)構(gòu)構(gòu)件的強(qiáng)度計(jì)算應(yīng)符合現(xiàn)行協(xié)會(huì)標(biāo)準(zhǔn)《不銹鋼結(jié)構(gòu)技術(shù)規(guī)程》CECS410的有關(guān)規(guī)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.