济南安装电缆桥架的验收标准主要依据相关规范和行业标准，以下是关键验收标准：

　　The acceptance criteria for installing cable trays in Jinan are mainly based on relevant national regulations and industry standards. The following are the key acceptance criteria:

　　1.桥架安装位置与尺寸

　　1. Installation position and size of cable tray

　　· 桥架安装位置应符合设计文件要求，左右偏差不应超过50mm。

　　·The installation position of the bridge should meet the requirements of the design documents, and the deviation from left to right should not exceed 50mm.

　　· 水平度偏差每米不超过2mm，垂直度偏差不超过3mm。

　　·The horizontal deviation shall not exceed 2mm per meter, and the vertical deviation shall not exceed 3mm.

　　· 桥架截断处及拼接处应平滑、无毛刺，对缝不应大于1.5mm，对缝处上下允许偏差±1mm。

　　·The cutting and splicing points of the bridge should be smooth and free of burrs, and the joint should not exceed 1.5mm. The allowable deviation at the joint should be ± 1mm.

　　2.支吊架安装

　　2. Installation of supports and hangers

　　· 支吊架安装应牢固、无明显扭曲，与预埋件焊接固定时，焊缝应饱满；膨胀螺栓固定时，螺栓应选用适配、防松零件齐全、连接紧固。

　　·The installation of supports and hangers should be firm and without obvious distortion. When welding and fixing with embedded parts, the weld seam should be full; When fixing expansion bolts, the bolts should be selected to be compatible, have complete anti loosening parts, and be securely connected.

　　· 水平敷设支撑间距1.5-3m，垂直敷设支撑间距≤2m，转弯处固定距弯通300-600mm处设置支吊架。

　　·Horizontal laying support spacing is 1.5-3m, vertical laying support spacing is ≤ 2m, and support hangers are set at a fixed distance of 300-600mm from the bend at the turning point.

　　3.接地与跨接

　　3. Grounding and Crossover

　　· 金属桥架全长应不少于2处与接地（PE）或接零（PEN）干线相连接，起始端和终端必须与建筑接地装置连接。

　　·The total length of the metal bridge should be connected to the grounding (PE) or neutral (PEN) main line at no less than 2 points, and the starting and ending ends must be connected to the building grounding device.

　　· 非镀锌桥架连接板两端必须用≥4mm铜芯线跨接，镀锌桥架连接板两端可不做跨接接地线，但连接板两端不少于2个有防松螺帽或防松垫圈的连接固定螺栓。

　　·Non galvanized bridge connecting plates must be bridged with ≥ 4mm copper core wires at both ends. Galvanized bridge connecting plates do not need to have bridging grounding wires at both ends, but there must be at least 2 connection fixing bolts with anti loosening nuts or washers at both ends of the connecting plate.

　　4.伸缩节与补偿装置

　　4. Expansion joint and compensation device

　　· 直线段钢制电缆桥架超过30m、铝合金或玻璃钢制电缆桥架超过15m时，应设置伸缩节，伸缩缝不小于20mm。

　　·When the straight section steel cable tray exceeds 30m, and the aluminum alloy or fiberglass cable tray exceeds 15m, expansion joints should be installed, with expansion joints not less than 20mm.

　　· 桥架跨越建筑物变形缝处应设置补偿装置。

　　·Compensation devices should be installed at the deformation joints where the bridge spans the building.

　　5.电缆敷设

　　5. Cable laying

　　· 电缆在桥架内的填充率，动力电缆不应大于40%，控制电缆不应大于50%。

　　·The filling rate of cables in the cable tray should not exceed 40% for power cables and 50% for control cables.

　　· 电缆小弯曲半径应符合规定，无绞拧、铠装压扁、护层断裂等缺陷。

　　·The minimum bending radius of the cable should comply with regulations, and there should be no defects such as twisting, armor flattening, or protective layer breakage.

　　· 电缆固定应符合要求，水平敷设时，在电缆首末端、转弯处及每隔3-5m固定；垂直敷设时，在电缆上端和每隔1.5m固定。

　　·The cable fixation should meet the requirements. When laying horizontally, it should be fixed at the beginning and end of the cable, at the turning point, and every 3-5m; When laying vertically, fix it at the top of the cable and every 1.5m.

　　6.防火与防护

　　6. Fire prevention and protection

　　· 桥架穿越防火墙、楼板时，应采取防火封堵措施，封堵材料应符合防火要求。

　　·When the bridge passes through firewalls and floor slabs, fireproof sealing measures should be taken, and the sealing materials should meet the fire prevention requirements.

　　· 户外桥架应有排水孔，坡度≥3‰，防止积水；腐蚀环境应采用防腐型桥架。

　　·Outdoor cable trays should have drainage holes with a slope of ≥ 3 ‰ to prevent water accumulation; Corrosive environments should use anti-corrosion cable trays.

　　7.外观与防腐

　　7. Appearance and anti-corrosion

　　· 桥架表面应无变形、划伤、开裂，内侧应平整光滑，无损伤电缆绝缘的凸起尖角。

　　·The surface of the cable tray should be free of deformation, scratches, and cracks, and the inner side should be flat and smooth, without protruding corners that damage the cable insulation.

　　· 防腐处理应符合要求，热浸镀锌桥架镀层厚度≥65μm，电镀锌桥架锌层厚度≥12μm。以上标准需结合具体工程设计文件和当地规范要求执行，验收时应留存完整的施工记录、材料检验报告等资料。

　　·The anti-corrosion treatment should meet the requirements, with a hot-dip galvanized bridge coating thickness of ≥ 65 μ m and an electroplated galvanized bridge coating thickness of ≥ 12 μ m. The above standards should be implemented in conjunction with specific engineering design documents and local regulatory requirements. During acceptance, complete construction records, material inspection reports, and other materials should be retained.

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