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.

当电缆桥架在施工和使用期间有多种受力情况时,应分别对各种工况进行结构分析,按其不利的状况进行设计分析。户外电缆桥架可能遭遇飓风、雪载荷等偶然作用时,尚应按照现行有关标准的要求进行结构分析。

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.

结构分析的模型应符合下列规定

The model of structural analysis shall comply with the following provisions

结构分析采用的计算简图、几何尺寸、计算参数,边界条件、网格划分、结构材料性能指标以及构造措施等应符合产品实际情况

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

结构上的作用应符合实际工况

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

各种近似假定和简化,应具有理论、试验依据或经工程实践验证;计算结果的精度应满足工程设计的要求。

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.

结构分析应符合下列规定

The structural analysis shall comply with the following provisions

满足力学平衡条件

Meet the mechanical equilibrium conditions

结构分析应采用弹性分析方法。

Elastic analysis method shall be adopted for structural analysis.

结构分析所采用的计算软件应经考核和验证,其技术条件应符合现行有关标准的要求。同时对分析结果进行判断和校核,保证分析结果的合理性。

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.

模型结构分析宜按空间体系进行结构整体分析。体型简单、规则,传力明确的空间结构,可沿不同方向分解为平面结构分别进行分析。

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.

托盘、梯架应采用空间体系进行整体分析,并应符合下列计算要求

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

托盘计算模型单元采用板单元

The pallet calculation model unit adopts plate element

梯架侧边为板时采用板单元.梯架侧边为型钢时采用梁或实体单元

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

计算模型的板单元的网格划分大小不宜大于10mm。

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

电缆桥架结构构件的强度、稳定、长细比计算均应满足现行标准《钢结构设计标准》GB50017、《冷弯薄壁型钢结构技术规范》GB50018的有关规定;不锈钢电缆桥架结构构件的强度计算应符合现行协会标准《不锈钢结构技术规程》CECS410的有关规定。

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.