山東工程人必看！橋架安裝驗收7大硬標準，少一項都要返工，附詳細數據

　　Shandong engineers must watch! 7 major hard standards for bridge installation acceptance, any missing item must be reworked, detailed data attached

　　在山東做建筑、電氣工程的朋友都清楚，電纜橋架安裝好不好，驗收說了算。很多施工隊辛辛苦苦把橋架裝完，結果監理驗收時當場叫停，要么返工整改，要么直接不合格，既費錢又誤工。其實，山東電纜橋架安裝驗收，沒有那么多“模糊地帶”，核心就7條硬標準，從進場到收尾，每一條都有明確要求，今天就用大白話+實打實的數據，給山東工程人、監理、廠房老板們嘮透，不管是濟南、青島，還是淄博、煙臺的工程，對照這7條驗收，一次性通過不踩坑。

　　Friends who work in construction and electrical engineering in Shandong know that the installation of cable bridge is good or not, and the acceptance is the final say. Many construction teams work hard to install the bridge frame, but when the supervisor inspects it, they immediately stop it, either rework and rectify it, or it is directly unqualified, which is both costly and time-consuming. In fact, there are not so many "ambiguous areas" in the installation and acceptance of cable trays in Shandong. The core is 7 hard standards, from entry to completion, each with clear requirements. Today, using plain language and practical data, I will explain to Shandong engineers, supervisors, and factory owners that regardless of whether it is a project in Jinan, Qingdao, Zibo, or Yantai, comparing these 7 acceptance criteria, it can be passed in one go without stepping on the pit.

　　先給大家說個山東本地真實案例：濟南高新區某廠房橋架安裝工程，施工隊圖省事，跳過了多項驗收細節，結果驗收時發現5處違規，不僅被要求全部返工，還延誤工期7天，額外花費3.2萬元。據山東建筑行業統計，每年因橋架安裝驗收不合格導致的返工率達31%，其中80%都是因為沒吃透驗收標準，忽視了細節，可見掌握驗收要點有多重要，尤其是這7條核心標準，缺一不可。

　　Let me first tell you a real case from a local area in Shandong: the bridge installation project in a factory building in Jinan High tech Zone. The construction team skipped multiple inspection details and found 5 violations during the inspection. They were not only required to rework all of them, but also delayed the construction period by 7 days and spent an additional 32000 yuan. According to statistics from the construction industry in Shandong, the annual rework rate caused by unqualified bridge installation acceptance is 31%, of which 80% is due to failure to fully understand the acceptance standards and neglect of details. This shows how important it is to master the key points of acceptance, especially these 7 core standards, which are indispensable.

　　條，也是驗收的“道門檻”——橋架進場驗收，不合格直接拒收。不管是山東本地采購的橋架，還是外地進場的產品，進場時必須提供產品合格證和權威質檢報告，缺一不可，這是保障橋架質量的基礎。同時，要對照施工圖紙和檢測報告，逐一核對橋架的尺寸、厚度，偏差不能超過±0.1mm，比如圖紙要求100mm寬、1.5mm厚的橋架，實測厚度不能低于1.4mm、高于1.6mm，尺寸偏差超標，后期無法正常敷設電纜，直接影響工程質量，據統計，山東橋架進場驗收不合格率約8%，大多是尺寸偏差或缺少質檢報告導致的。

　　The first criterion, which is also the "first threshold" for acceptance, is the on-site acceptance of the bridge frame. If it is not qualified, it will be rejected directly. Whether it is cable trays purchased locally in Shandong or products imported from other places, product qualification certificates and authoritative quality inspection reports must be provided upon entry, both of which are essential for ensuring the quality of cable trays. At the same time, it is necessary to compare the construction drawings and inspection reports, and check the size and thickness of the cable tray one by one. The deviation should not exceed ± 0.1mm. For example, the drawing requires a cable tray with a width of 100mm and a thickness of 1.5mm, and the measured thickness should not be less than 1.4mm or more than 1.6mm. If the size deviation exceeds the standard, the cable cannot be laid normally in the later stage, which directly affects the quality of the project. According to statistics, the unqualified rate of Shandong cable tray acceptance is about 8%, mostly caused by size deviation or lack of quality inspection report.

　　第二條，伸縮節、補償器安裝，關乎橋架使用壽命。根據驗收標準，當山東電纜橋架直段長度超過30米時，必須設置伸縮節，伸縮節間距控制在20-30米，伸縮量預留10-20mm，避免溫度變化導致橋架變形、開裂；如果橋架需要跨越建筑變形縫，必須設置補償器，補償器的伸縮量不小于100mm，貼合變形縫的伸縮幅度，否則變形縫移位時，會拉裂橋架或電纜。比如青島某寫字樓，橋架直段長度38米，未設置伸縮節，驗收時直接要求整改，整改成本每米增加45元。

　　The installation of expansion joints and compensators is related to the service life of the bridge. According to the acceptance criteria, when the length of the straight section of the Shandong cable tray exceeds 30 meters, expansion joints must be installed with a spacing of 20-30 meters and a reserved expansion amount of 10-20mm to avoid deformation and cracking of the tray caused by temperature changes; If the bridge needs to cross the building deformation joint, a compensator must be installed. The expansion and contraction of the compensator should not be less than 100mm, and it should fit the expansion and contraction amplitude of the deformation joint. Otherwise, when the deformation joint moves, it will tear the bridge or cable. For example, in a certain office building in Qingdao, the straight section of the bridge is 38 meters long and does not have expansion joints. During the acceptance inspection, rectification was directly required, and the cost of rectification increased by 45 yuan per meter.

　　第三條，支吊架間距，不能超2米，這是關鍵。很多施工隊為了省材料、省人工，隨意加大支吊架間距，殊不知這是驗收的“必查項”，也是隱患的重災區。驗收標準明確規定，山東電纜橋架支吊架的間距不得大于2米，水平敷設時，間距建議控制在1.5-2米，垂直敷設時，間距不大于2米，每米支吊架承重不低于80kg，否則橋架長期承重會下垂、變形，甚脫落。據山東監理行業反饋，支吊架間距超標是常見的違規項，占驗收不合格案例的42%。

　　The third point is that the spacing between supports and hangers should not exceed 2 meters, which is a safety key. Many construction teams arbitrarily increase the spacing between supports and hangers in order to save materials and labor, without realizing that this is a "must check item" for acceptance and also a high-risk area for safety hazards. The acceptance criteria clearly stipulate that the spacing between the supports and hangers of Shandong cable tray shall not exceed 2 meters. When laid horizontally, the spacing is recommended to be controlled at 1.5-2 meters, and when laid vertically, the spacing shall not exceed 2 meters. The load-bearing capacity of each meter of support and hanger shall not be less than 80kg. Otherwise, the long-term load-bearing capacity of the cable tray will sag, deform, or even fall off. According to feedback from the supervision industry in Shandong, exceeding the spacing between supports and hangers is the most common violation, accounting for 42% of cases of unqualified acceptance.

　　第四條，彎頭處支吊架安裝，細節不能漏。橋架彎頭處受力集中，容易變形，驗收標準要求，彎頭處及彎頭兩端600mm范圍內，必須分別設置支吊架，兩端支吊架與彎頭的距離控制在500-600mm，不能太遠也不能太近，確保彎頭處受力均勻，避免長期使用后出現變形、松動。比如淄博某工廠，彎頭處未按要求設置支吊架，驗收時被要求補裝，每處補裝成本約120元，還延誤了驗收進度。

　　Article 4: The installation of supports and hangers at bends must not overlook any details. The bending point of the bridge is subjected to concentrated force and is prone to deformation. The acceptance standard requires that supports and hangers must be installed separately at the bending point and within a range of 600mm at both ends of the bending point. The distance between the supports and hangers at both ends and the bending point should be controlled between 500-600mm, neither too far nor too close, to ensure uniform force distribution at the bending point and avoid deformation and loosening after long-term use. For example, in a factory in Zibo, support and hanger brackets were not installed at the bend as required, and were required to be reinstalled during acceptance. The cost of each installation was about 120 yuan, which also delayed the acceptance progress.

　　第五條，支吊架與橋架連接，必須用螺栓固定。很多施工隊圖省事，用焊接代替螺栓固定，這是驗收的“紅線”，不能碰。驗收標準明確，支吊架橫桿與橋架必須采用螺栓固定，螺栓規格與橋架厚度匹配，1.5-2.0mm厚的橋架，選用M8螺栓，2.5-3.0mm厚的橋架，選用M10螺栓，螺栓擰緊后無松動，避免焊接導致橋架材質受損，影響承重能力，山東多數驗收不合格案例中，焊接代替螺栓固定占比18%。

　　Article 5: The connection between the support hanger and the bridge frame must be fixed with bolts. Many construction teams try to save time by using welding instead of bolts for fixing, which is the "red line" of acceptance and must not be touched. The acceptance criteria are clear, and the horizontal bars of the supports and hangers must be fixed with bolts that match the thickness of the bridge. For bridges with a thickness of 1.5-2.0mm, M8 bolts are used, and for bridges with a thickness of 2.5-3.0mm, M10 bolts are used. After tightening the bolts, there should be no looseness to avoid welding causing damage to the bridge material and affecting the load-bearing capacity. In most cases of unqualified acceptance in Shandong, welding instead of bolt fixation accounts for 18%.

　　第六條，橋架連接處跨接線路，截面不能小于4平方毫米。這是保障用電的關鍵，橋架連接處必須設置跨接線路，跨接線選用銅芯導線，接線截面不得小于4平方毫米，選用6平方毫米，確保導電性能良好，避免連接處接觸不良產生電火花，引發事故。據統計，山東因橋架跨接線截面不達標導致的電氣隱患，每年約有20余起，驗收時一旦發現，必須當場整改。

　　Article 6: The cross section of the line at the bridge connection shall not be less than 4 square millimeters. This is the key to ensuring electrical safety. Bridge connections must be equipped with jumper wires, using copper core wires. The cross-sectional area of the wire should not be less than 4 square millimeters, preferably 6 square millimeters, to ensure good conductivity and avoid poor contact at the connection, which can cause electrical sparks and safety accidents. According to statistics, there are about 20 electrical hazards in Shandong each year caused by substandard cross section of bridge bridging wires. Once discovered during acceptance, they must be rectified on the spot.

　　第七條，收尾驗收，防火封堵不能少。電纜鋪設完成后，橋架頂部必須用蓋板蓋住，不能有遺漏，穿墻洞口必須采用防火材料進行封堵，防火材料選用有機防火堵料或防火包，封堵厚度不小于15mm，貼合洞口縫隙，無松動、無空隙，符合《建筑防火封堵應用技術標準》要求，防止火災時火焰通過洞口蔓延，這也是驗收的“必查項”，遺漏一處就無法通過驗收。

　　Article 7: In the final acceptance, fireproof sealing cannot be omitted. After the cable laying is completed, the top of the cable tray must be covered with a cover plate without any omissions. The openings through the wall must be sealed with fireproof materials, using organic fireproof blocking materials or fireproof packages. The sealing thickness should not be less than 15mm, and it should fit the gaps of the openings without looseness or gaps, in accordance with the requirements of the "Technical Standards for Application of Building Fireproof Blocking", to prevent flames from spreading through the openings during a fire. This is also a "must check item" for acceptance. If one is missed, it cannot pass the acceptance.

　　補充一組山東本地實用提醒：山東電纜橋架驗收，除了這7條核心標準，還要檢查橋架外觀，熱鍍鋅橋架鍍層均勻，無漏鍍、銹蝕，靜電噴塑橋架無氣泡、起皮；橋架水平敷設時，水平偏差不大于3mm/米，總偏差不大于20mm；垂直敷設時，垂直偏差不大于2mm/米。另外，驗收合格后，要留存驗收記錄和影像資料，避免后期出現糾紛，山東本地正規工程，驗收記錄留存年限不低于5年。

　　Add a set of local practical reminders in Shandong: In addition to these 7 core standards, the inspection of cable trays in Shandong also requires checking the appearance of the trays. The hot-dip galvanized trays have a uniform coating, no missing plating or rust, and the electrostatic spray painted trays have no bubbles or peeling; When laying the bridge horizontally, the horizontal deviation shall not exceed 3mm/meter, and the total deviation shall not exceed 20mm; when laying vertically, the vertical deviation shall not exceed 2mm/meter. In addition, after passing the acceptance inspection, the acceptance records and image materials should be retained to avoid disputes in the later stage. For local formal projects in Shandong, the retention period of acceptance records should not be less than 5 years.

　　總結來說，山東電纜橋架安裝驗收，沒有那么多“人情可講”，7條硬標準，少一項都要返工。不管是施工隊還是監理，都要吃透這些標準，從進場到收尾，每一個細節都不能忽視，既保障工程質量，又避免返工浪費。希望這篇科普能幫到山東的工程人們，避開驗收坑、坑，讓橋架安裝工程一次性通過驗收，順利推進后續施工，覺得有用的話，別忘了點贊轉發，提醒身邊更多同行～

　　In summary, the installation and acceptance of cable trays in Shandong do not have as many "human feelings to talk about" as there are 7 hard standards, and any one missing one needs to be reworked. Both the construction team and the supervisor must thoroughly understand these standards, from entry to completion, every detail cannot be ignored, which not only ensures the quality of the project but also avoids rework and waste. I hope this science popularization can help engineers in Shandong to avoid inspection and safety pits, so that the bridge installation project can pass the inspection at once and smoothly proceed with subsequent construction. If you find it useful, don't forget to like and share it, reminding more colleagues around you