材质决定基础寿命​

Material determines the basic lifespan

山东常见电缆桥架材质有热镀锌钢、不锈钢、玻璃钢及铝合金。热镀锌钢在一般室内环境，若无外力破坏，寿命可达 20 - 30 年，但沿海地区因高湿度和盐分，寿命缩 15 - 20 年。不锈钢中，304 型在一般环境可使用超 30 年，轻微腐蚀环境能正常用 25 年；316L 型因含钼抗氯离子腐蚀，在强腐蚀化工车间，寿命可达 35 年以上。玻璃钢桥架质量轻、耐水和腐蚀，适合潮湿及有腐蚀风险场所，正常设计寿命 20 年，不过长期户外紫外线照射会致树脂基体老化，寿命减 15 年。铝合金桥架在普通室内寿命 25 - 30 年，沿海高盐雾地区降 20 - 25 年。

Common cable tray materials in Shandong include hot-dip galvanized steel, stainless steel, fiberglass reinforced plastic, and aluminum alloy. Hot dip galvanized steel can have a lifespan of 20-30 years in general indoor environments without external damage, but in coastal areas, its lifespan is reduced to 15-20 years due to high humidity and salt content. In stainless steel, Type 304 can be used for over 30 years in general environments, and can be used normally for 25 years in slightly corrosive environments; The 316L type, due to its molybdenum content and resistance to chloride ion corrosion, can have a lifespan of over 35 years in highly corrosive chemical workshops. Fiberglass cable trays are lightweight, water-resistant, and corrosion-resistant, suitable for humid and corrosive environments. The normal design life is 20 years, but long-term outdoor UV exposure can cause aging of the resin matrix, reducing the life to 15 years. Aluminum alloy cable trays have a lifespan of 25-30 years in ordinary indoor environments, but it can be reduced to 20-25 years in coastal areas with high salt spray.

安装质量影响耐用性​

Installation quality affects durability

规范安装是保障桥架寿命的关键。安装不牢固，如螺栓未拧紧、焊接点不牢，在震动或外力作用下，桥架易松动、位移，导致电缆磨损，加速结构变形。跨距不合理，桥架因承受电缆重量产生较大挠度，金属材质易疲劳裂缝，非金属材质可能断裂。接地不当，雷雨或电气故障时，桥架易遭雷击或产生高感应电压，加速金属部件生锈，在多雷暴的山东地区尤其要重视。​

Standardized installation is the key to ensuring the service life of cable trays. The installation is not firm, such as bolts not tightened or welding points not firmly secured. Under vibration or external force, the bridge frame is prone to loosening and displacement, leading to cable wear and accelerating structural deformation. The span is unreasonable, and the cable tray undergoes significant deflection due to bearing the weight of the cable. Metal materials are prone to fatigue cracks, while non-metallic materials may break. Improper grounding can lead to lightning strikes or high induced voltage on bridge structures during thunderstorms or electrical faults, accelerating the rusting of metal components. This is particularly important in the thunderstorm prone Shandong region. ​

使用环境带来挑战​

Challenges brought by the usage environment

山东气候多样、工业环境复杂，影响桥架生锈、老化速度。夏季高温多雨，加速金属桥架生锈，雨水侵蚀破坏防护层；冬季寒冷，热胀冷缩使防护层开裂。工业区域中，化工企业周边的酸性或碱性气体腐蚀金属桥架；钢铁厂等场所的铁粉、粉尘吸附在桥架表面，形成原电池加速腐蚀。沿海或地下设施内的高湿度环境，利于金属桥架生锈，也影响玻璃钢等材质的内部结构稳定性。​

Shandong has a diverse climate and complex industrial environment, which affects the speed of rusting and aging of bridge frames. High temperatures and heavy rainfall in summer accelerate the rusting of metal bridge frames, and rainwater erosion damages the protective layer; Winter is cold, and thermal expansion and contraction cause the protective layer to crack. In industrial areas, acidic or alkaline gases surrounding chemical enterprises corrode metal cable trays; Iron powder and dust from steel plants and other places adsorb onto the surface of the bridge, forming primary batteries that accelerate corrosion. The high humidity environment in coastal or underground facilities is conducive to rusting of metal bridge frames and also affects the internal structural stability of materials such as fiberglass. ​

维护保养延长寿命​

Maintenance and upkeep extend lifespan

定期有效的维护可延缓桥架生锈、老化。定期检查外观有无变形、裂缝，连接件是否松动，防护层是否脱落，户外或恶劣环境的桥架检查周期应缩短。定期清洁表面灰尘杂物，金属桥架可涂防护漆，玻璃钢桥架用温和清洁剂清洗。发现生锈、老化或损坏，及时修复，轻微生锈可打磨喷漆，严重时更换部件，确保电缆运行。​

Regular and effective maintenance can delay the rusting and aging of bridge frames. Regularly inspect the appearance for deformation, cracks, loose connections, and detachment of protective layers. The inspection cycle for outdoor or harsh environments should be shortened. Regularly clean the surface of dust and debris, metal bridge frames can be coated with protective paint, and fiberglass bridge frames can be cleaned with mild cleaning agents. If rust, aging or damage is found, it should be repaired in a timely manner. Slight rust can be polished and painted, and if severe, parts should be replaced to ensure the safe operation of the cable. ​

山东电缆桥架使用寿命通常在 15 - 35 年，受材质、安装质量、使用环境及维护保养等因素综合影响。合理选材、规范安装、重视维护，能确保其长期稳定运行。

The service life of cable trays in Shandong is usually 15-35 years, which is influenced by factors such as material, installation quality, usage environment, and maintenance. Reasonable material selection, standardized installation, and emphasis on maintenance can ensure its long-term stable operation.

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