山东工程人必看！桥架安装验收7大硬标准，少一项都要返工，附详细数据

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

　　在山东做建筑、电气工程的朋友都清楚，电缆桥架安装好不好，验收说了算。很多施工队辛辛苦苦把桥架装完，结果监理验收时当场叫停，要么返工整改，要么直接不合格，既费钱又误工。其实，山东电缆桥架安装验收，没有那么多“模糊地带”，核心就7条硬标准，从进场到收尾，每一条都有明确要求，今天就用大白话+实打实的数据，给山东工程人、监理、厂房老板们唠透，不管是济南、青岛，还是淄博、烟台的工程，对照这7条验收，一次性通过不踩坑。

　　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.

　　先给大家说个山东本地真实案例：济南高新区某厂房桥架安装工程，施工队图省事，跳过了多项验收细节，结果验收时发现5处违规，不仅被要求全部返工，还延误工期7天，额外花费3.2万元。据山东建筑行业统计，每年因桥架安装验收不合格导致的返工率达31%，其中80%都是因为没吃透验收标准，忽视了细节，可见掌握验收要点有多重要，尤其是这7条核心标准，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.

　　条，也是验收的“道门槛”——桥架进场验收，不合格直接拒收。不管是山东本地采购的桥架，还是外地进场的产品，进场时必须提供产品合格证和权威质检报告，缺一不可，这是保障桥架质量的基础。同时，要对照施工图纸和检测报告，逐一核对桥架的尺寸、厚度，偏差不能超过±0.1mm，比如图纸要求100mm宽、1.5mm厚的桥架，实测厚度不能低于1.4mm、高于1.6mm，尺寸偏差超标，后期无法正常敷设电缆，直接影响工程质量，据统计，山东桥架进场验收不合格率约8%，大多是尺寸偏差或缺少质检报告导致的。

　　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.

　　第二条，伸缩节、补偿器安装，关乎桥架使用寿命。根据验收标准，当山东电缆桥架直段长度超过30米时，必须设置伸缩节，伸缩节间距控制在20-30米，伸缩量预留10-20mm，避免温度变化导致桥架变形、开裂；如果桥架需要跨越建筑变形缝，必须设置补偿器，补偿器的伸缩量不小于100mm，贴合变形缝的伸缩幅度，否则变形缝移位时，会拉裂桥架或电缆。比如青岛某写字楼，桥架直段长度38米，未设置伸缩节，验收时直接要求整改，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.

　　第三条，支吊架间距，不能超2米，这是关键。很多施工队为了省材料、省人工，随意加大支吊架间距，殊不知这是验收的“必查项”，也是隐患的重灾区。验收标准明确规定，山东电缆桥架支吊架的间距不得大于2米，水平敷设时，间距建议控制在1.5-2米，垂直敷设时，间距不大于2米，每米支吊架承重不低于80kg，否则桥架长期承重会下垂、变形，甚脱落。据山东监理行业反馈，支吊架间距超标是常见的违规项，占验收不合格案例的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.

　　第四条，弯头处支吊架安装，细节不能漏。桥架弯头处受力集中，容易变形，验收标准要求，弯头处及弯头两端600mm范围内，必须分别设置支吊架，两端支吊架与弯头的距离控制在500-600mm，不能太远也不能太近，确保弯头处受力均匀，避免长期使用后出现变形、松动。比如淄博某工厂，弯头处未按要求设置支吊架，验收时被要求补装，每处补装成本约120元，还延误了验收进度。

　　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.

　　第五条，支吊架与桥架连接，必须用螺栓固定。很多施工队图省事，用焊接代替螺栓固定，这是验收的“红线”，不能碰。验收标准明确，支吊架横杆与桥架必须采用螺栓固定，螺栓规格与桥架厚度匹配，1.5-2.0mm厚的桥架，选用M8螺栓，2.5-3.0mm厚的桥架，选用M10螺栓，螺栓拧紧后无松动，避免焊接导致桥架材质受损，影响承重能力，山东多数验收不合格案例中，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%.

　　第六条，桥架连接处跨接线路，截面不能小于4平方毫米。这是保障用电的关键，桥架连接处必须设置跨接线路，跨接线选用铜芯导线，接线截面不得小于4平方毫米，选用6平方毫米，确保导电性能良好，避免连接处接触不良产生电火花，引发事故。据统计，山东因桥架跨接线截面不达标导致的电气隐患，每年约有20余起，验收时一旦发现，必须当场整改。

　　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.

　　第七条，收尾验收，防火封堵不能少。电缆铺设完成后，桥架顶部必须用盖板盖住，不能有遗漏，穿墙洞口必须采用防火材料进行封堵，防火材料选用有机防火堵料或防火包，封堵厚度不小于15mm，贴合洞口缝隙，无松动、无空隙，符合《建筑防火封堵应用技术标准》要求，防止火灾时火焰通过洞口蔓延，这也是验收的“必查项”，遗漏一处就无法通过验收。

　　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.

　　补充一组山东本地实用提醒：山东电缆桥架验收，除了这7条核心标准，还要检查桥架外观，热镀锌桥架镀层均匀，无漏镀、锈蚀，静电喷塑桥架无气泡、起皮；桥架水平敷设时，水平偏差不大于3mm/米，总偏差不大于20mm；垂直敷设时，垂直偏差不大于2mm/米。另外，验收合格后，要留存验收记录和影像资料，避免后期出现纠纷，山东本地正规工程，验收记录留存年限不低于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.

　　总结来说，山东电缆桥架安装验收，没有那么多“人情可讲”，7条硬标准，少一项都要返工。不管是施工队还是监理，都要吃透这些标准，从进场到收尾，每一个细节都不能忽视，既保障工程质量，又避免返工浪费。希望这篇科普能帮到山东的工程人们，避开验收坑、坑，让桥架安装工程一次性通过验收，顺利推进后续施工，觉得有用的话，别忘了点赞转发，提醒身边更多同行～

　　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