電纜橋架作為電力與通信線路的重要載體，其安裝質(zhì)量直接影響系統(tǒng)運行與使用壽命。從施工準(zhǔn)備到驗收交付，每個環(huán)節(jié)均需嚴(yán)格遵循技術(shù)規(guī)范，確保橋架系統(tǒng)穩(wěn)固可靠。

　　As an important carrier of power and communication lines, the installation quality of cable trays directly affects the safety and service life of the system operation. From construction preparation to acceptance and delivery, every step must strictly follow technical specifications to ensure the stability and reliability of the bridge system.

　　安裝前需對施工環(huán)境進行勘查。確認建筑結(jié)構(gòu)承重能力，混凝土強度需達到C20以上方可進行膨脹螺栓固定。對于鋼結(jié)構(gòu)廠房，需檢測橫梁撓度，確保橋架荷載不超過設(shè)計值的70%。環(huán)境溫濕度同樣關(guān)鍵，低溫環(huán)境下金屬橋架收縮率可達0.02%/℃，需預(yù)留熱脹冷縮補償量；潮濕區(qū)域則需選用鍍鋅厚度≥65μm的橋架，防止銹蝕。

　　A comprehensive survey of the construction environment is required before installation. The key is to confirm the load-bearing capacity of the building structure, and the concrete strength must reach C20 or above before expansion bolt fixation can be carried out. For steel structure factories, it is necessary to detect the deflection of the crossbeam to ensure that the bridge load does not exceed 70% of the design value. The temperature and humidity of the environment are equally critical. The shrinkage rate of metal cable trays can reach 0.02%/℃ in low-temperature environments, and compensation for thermal expansion and contraction needs to be reserved; In damp areas, cable trays with a galvanized thickness of ≥ 65 μ m should be selected to prevent rusting.

　　工具與材料驗收是質(zhì)量控制的首道關(guān)卡。電動扳手扭矩需校準(zhǔn)±5%，確保M10螺栓緊固力矩達標(biāo)。橋架本體檢測需涵蓋外觀、尺寸與鍍層厚度，使用涂層測厚儀隨機抽檢，鍍鋅層厚度不足60μm或噴塑層附著力不達1級標(biāo)準(zhǔn)的產(chǎn)品禁止使用?？缃訉?dǎo)線需采用4mm2銅編織帶，截面積不足將影響接地連續(xù)性。

　　The acceptance of tools and materials is the first hurdle in quality control. The torque of the electric wrench needs to be calibrated to ± 5% to ensure that the tightening torque of the M10 bolt meets the standard. The inspection of the bridge body should cover appearance, size, and coating thickness. A coating thickness gauge should be used for random sampling. Products with a galvanized layer thickness of less than 60 μ m or a spray coating adhesion that does not meet Level 1 standards are prohibited from use. The jumper wire needs to use 4mm 2 copper braided tape, and insufficient cross-sectional area will affect grounding continuity.

　　定位劃線階段需建立三維坐標(biāo)系。水平誤差每米不得超過2mm，全長偏差控制在10mm以內(nèi)，使用激光投線儀配合墨斗彈線。轉(zhuǎn)角處需采用45°拼接工藝，避免直角彎頭造成的線路磨損。對于多層橋架，垂直間距需預(yù)留200mm以上，便于散熱與維護，底部距地面高度不宜低于2.5米，防止機械損傷。

　　The positioning and marking stage requires the establishment of a three-dimensional coordinate system. The horizontal error shall not exceed 2mm per meter, and the overall deviation shall be controlled within 10mm. A laser projector shall be used in conjunction with an ink fountain to mark the line. 45 ° splicing technology should be used at the corner to avoid line wear caused by right angle bends. For multi-layer cable trays, a vertical spacing of at least 200mm should be reserved for heat dissipation and maintenance. The bottom should not be less than 2.5 meters above the ground to prevent mechanical damage.

　　支吊架安裝是確保橋架穩(wěn)定性的核心環(huán)節(jié)。膨脹螺栓埋深需達到80mm以上，使用扭矩扳手分兩次緊固，達到設(shè)計值70%，二次復(fù)緊間隔24小時。吊架間距需根據(jù)橋架規(guī)格調(diào)整，200mm寬橋架間距不得超過1.5米，超過400mm寬需增設(shè)縱向抗震支吊架。對于非直線段，每3米需增設(shè)固定支架，防止變形。

　　The installation of supports and hangers is the core link to ensure the stability of the bridge. The burial depth of the expansion bolt should be at least 80mm, and it should be tightened twice with a torque wrench. The first tightening should reach 70% of the design value, and the second tightening should be spaced 24 hours apart. The spacing between hangers should be adjusted according to the specifications of the bridge frame. The spacing between 200mm wide bridge frames should not exceed 1.5 meters, and longitudinal seismic support hangers should be added if the width exceeds 400mm. For non-linear sections, fixed brackets should be added every 3 meters to prevent deformation.

　　橋架組裝需遵循“先下后上、先內(nèi)后外”原則。連接板螺栓緊固順序需對稱交叉進行，避免單邊受力導(dǎo)致密封不嚴(yán)。蓋板安裝前需清理內(nèi)部雜物，使用吸塵器配合粘毛滾筒，防止金屬碎屑損傷電纜絕緣層。對于防火橋架，需檢查防火封堵是否嚴(yán)密，防火泥填充率需達95%以上，孔洞處需加裝防火包。

　　The assembly of cable trays should follow the principle of "from bottom to top, from inside to outside". The tightening sequence of the connecting plate bolts should be symmetrically crossed to avoid insufficient sealing caused by unilateral force. Before installing the cover plate, it is necessary to clean the internal debris and use a vacuum cleaner in conjunction with a glue roller to prevent metal debris from damaging the cable insulation layer. For fireproof cable trays, it is necessary to check whether the fireproof sealing is tight, the fireproof mud filling rate should be above 95%, and fireproof bags should be installed at the holes.

　　接地處理是保障系統(tǒng)的關(guān)鍵步驟。每段橋架需保證2處以上接地連接，跨接導(dǎo)線與橋架接觸面需去除鍍層，露出金屬本色后涂抹導(dǎo)電膏?？偟入娢宦?lián)結(jié)箱接地電阻不得大于1Ω，使用接地電阻測試儀分三次測量取平均值。對于強電與弱電共架場景，需采用分隔板隔離，間距保持300mm以上，防止電磁干擾。

　　Grounding treatment is a crucial step in ensuring system safety. Each section of the bridge should ensure at least 2 grounding connections, and the contact surface between the jumper wire and the bridge should have its coating removed. After exposing the natural color of the metal, conductive paste should be applied. The grounding resistance of the total equipotential bonding box shall not exceed 1 Ω, and the grounding resistance tester shall be used to measure the average value in three separate measurements. For the scenario of strong and weak electricity sharing the same frame, a partition board should be used for isolation, with a spacing of at least 300mm to prevent electromagnetic interference.

　　特殊環(huán)境安裝需采取專項措施。腐蝕性區(qū)域橋架需做三防處理，底漆干膜厚度≥50μm，面漆耐鹽霧性能需達720小時以上。高溫場所應(yīng)選用耐溫150℃以上的硅橡膠密封條，橋架頂部需加裝隔熱板。振動設(shè)備附近需安裝彈性支架，固有頻率避開設(shè)備振動頻率50%以上，避免共振導(dǎo)致的疲勞損傷。

　　Special measures need to be taken for installation in special environments. Corrosive area cable trays need to undergo three protection treatments, with a dry film thickness of ≥ 50 μ m for the primer and a salt spray resistance of at least 720 hours for the topcoat. Silicone rubber sealing strips with a temperature resistance of 150 ℃ or above should be used in high-temperature places, and insulation boards should be installed on the top of the bridge. Elastic supports should be installed near vibration equipment, with natural frequencies avoiding over 50% of the equipment's vibration frequency to prevent fatigue damage caused by resonance.

　　驗收階段需進行多維度檢測。外觀檢查采用5倍放大鏡，查看焊縫、涂層缺陷。載荷試驗需加載設(shè)計值的150%，持續(xù)2小時無變形。接地連續(xù)性測試需在潮濕環(huán)境下進行，確保接觸電阻≤0.01Ω。提交的竣工資料需包含三維走向圖、材料合格證及第三方檢測報告，實現(xiàn)全生命周期可追溯。

　　Multi dimensional testing is required during the acceptance stage. The appearance inspection adopts a 5x magnifying glass, focusing on inspecting weld seams and coating defects. The load test needs to be loaded to 150% of the design value for 2 hours without permanent deformation. The grounding continuity test should be conducted in a humid environment to ensure that the contact resistance is ≤ 0.01 Ω. The submitted completion documents must include a three-dimensional directional diagram, material qualification certificate, and third-party inspection report to achieve full lifecycle traceability.

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