燃烧特性研究：电缆一般是以成束的形式来敷设，同时多集中布置在墙壁附近以及顶棚下方等特殊空间，如电缆隧道、电缆沟、厂房等，这使得电缆桥架火灾在上述特殊环境下往往表现出较为复杂的蔓延行为。研究不同布置形式下的桥架电缆燃烧特性，对于预防和控制电缆火灾具有重要意义。

　　Research on Combustion Characteristics: Cables are generally laid in bundles and are often concentrated in special spaces such as near walls and under ceilings, such as cable tunnels, cable trenches, and factories. This makes cable tray fires often exhibit complex spreading behavior in these special environments. Studying the combustion characteristics of cable trays under different layout forms is of great significance for preventing and controlling cable fires.

　　支撑跨度研究：为了降低海上油气项目的总成本，同时不影响质量和，研究如何确定长的电缆桥架支撑跨度，以减少支撑数量，降低电缆桥架系统的主要成本。通过有限元建模方法和简化手算进行比较，验证了在不增加电缆桥架强度（厚度）的情况下的长跨度，并从人工处理电缆桥架的角度验证了较长跨度的可施工性。结果表明，本文提出的跨度可以在不降低可施工性的情况下带来更好的经济效益，如随着跨度的增加，可以节省材料和施工人力成本。

　　Research on optimal support span: In order to reduce the total cost of offshore oil and gas projects without affecting quality and safety, this study aims to determine the longest cable tray support span to reduce the number of supports and lower the main cost of the cable tray system. By comparing the finite element modeling method and simplified manual calculation, the longest span without increasing the strength (thickness) of the cable tray was verified, and the constructability of longer spans was verified from the perspective of manual processing of cable trays. The results indicate that the optimal span proposed in this article can bring better economic benefits without reducing constructability, such as saving material and construction labor costs as the span increases.

　　火灾事故调查与防火对策：通过调查一起电缆桥架火灾事故，探讨电缆桥架和电线电缆的火灾危险性和起火因素，提出了有效预防电缆桥架火灾的防火措施。

　　Fire accident investigation and fire prevention measures: Through investigating a cable tray fire accident, this study explores the fire hazards and ignition factors of cable trays and wires, and proposes effective fire prevention measures for cable tray fires.

　　地震应力快速预估方法：为了给出能够快速、即时地预估 S2 型电缆桥架的应力方法，根据电缆桥架的结构特点将 S2 型支架振动问题简化为端部带质点的悬臂梁振动模型，研究其对悬臂梁的参与系数、振型等影响。结果表明，该模型适用于预估电缆桥架的自振频率、弯曲应力等，并与反应谱分析方法和抗震鉴定试验结果相吻合。

　　Rapid prediction method for earthquake stress: In order to provide a method for quickly and instantly estimating the stress of S2 type cable trays, the vibration problem of S2 type supports is simplified as a cantilever beam vibration model with mass points at the end according to the structural characteristics of cable trays, and its influence on the participation coefficient, vibration mode, etc. of the cantilever beam is studied. The results indicate that the model is suitable for estimating the natural frequency and bending stress of cable trays, and is consistent with the response spectrum analysis method and seismic identification test results.

　　电缆火灾建模适用性研究：为了阐明电缆火灾在多隔间中的热和烟雾传播，法国辐射防护与核研究所（IRSN）在经济合作与发展组织（OECD）的 PRISME2 项目框架内进行了大规模多隔间火灾试验（CFS-2 试验）。通过将基于美国标准与技术研究院（NIST）开发的 FLASH-CAT（Flame Spread over Horizontal Cable Trays）的电缆桥架火源模型引入区域代码 BRI2002，讨论了每个托盘的点火延迟时间和水平火焰传播速度的方法。

　　Applicability Study of Cable Fire Modeling: In order to elucidate the heat and smoke propagation of cable fires in multiple compartments, the French Institute for Radiation Protection and Nuclear Safety (IRSN) conducted a large-scale multi compartment fire test (CFS-2 test) within the framework of the PRISME2 project of the Organization for Economic Cooperation and Development (OECD). The ignition delay time and horizontal flame propagation speed of each tray were discussed by introducing the FLASH-CAT (Flame Spread over Horizontal Cable Trays) cable tray fire source model developed by the National Institute of Standards and Technology (NIST) into the area code BRI2002.

　　ICT 线路在电缆桥架中的铺设问题：实际中的一个例子旨在阐明通往 IT 机柜的电缆穿过电缆桥架的边缘并用束线带固定可能存在的问题，如电缆被压到电缆桥架边缘导致损坏、电缆因自身重量从桥架中移出等。探讨了未来安装方面的变化以及具体的解决方法。

　　The problem of laying ICT lines in cable trays: An example in practice aims to illustrate the possible issues of cables leading to IT cabinets passing through the edge of cable trays and being fixed with cable ties, such as cables being pressed against the edge of cable trays causing damage, cables being removed from the bridge due to their own weight, etc. Explored the changes in future installation and specific solutions.

　　基于振动台和作动器的实时混合测试：为了准确揭示电缆桥架系统的抗震性能，提出了一种基于振动台和作动器的新型实时混合测试方法（RTHT-STA）。该方法使用振动台模拟地面运动，在振动台上设置位移模式控制的伺服液压作动器，真实模拟电缆桥架系统数值子结构和实验子结构之间的横向剪切边界条件。通过数值模拟和实验验证了该方法的有效性和准确性，结果表明该方法稳定可靠，与传统振动台试验结果的相关系数高达 91.78%。

　　Real time hybrid testing based on vibration table and actuator: In order to accurately reveal the seismic performance of cable tray systems, a new real-time hybrid testing method based on vibration table and actuator (RTHT-STA) is proposed. This method uses a vibration table to simulate ground motion, and sets up displacement mode controlled servo hydraulic actuators on the vibration table to simulate the transverse shear boundary conditions between the numerical substructure and experimental substructure of the cable tray system. The effectiveness and accuracy of this method have been verified through numerical simulations and experiments, and the results show that the method is stable and reliable, with a correlation coefficient of up to 91.78% with traditional vibration table test results.

　　电缆桥架主次梁节点滞回模型研究：在一些地震中，建筑物中的电缆桥架系统遭受了严重破坏甚倒塌，这通常是由于主次梁节点（MSBJ）的失效引起的。本研究基于循环加载试验，提出了一种用于 MSBJ 的滞回模型，该模型能够准确反映损伤机制。通过数值模拟分析了采用不同节点模型的电缆桥架系统在振动台上的动力特性、地震响应和损伤情况。结果表明，与其他模型相比，所提出的 MSBJ 滞回模型更准确，可用于预测电缆桥架系统的抗震行为。

　　Research on hysteresis model of primary and secondary beam nodes in cable tray: In some earthquakes, the cable tray system in buildings has suffered serious damage or even collapse, which is usually caused by the failure of the primary and secondary beam nodes (MSBJ). This study proposes a hysteresis model for MSBJ based on cyclic loading experiments, which can accurately reflect the damage mechanism. The dynamic characteristics, seismic response, and damage situation of cable tray systems using different node models on a vibration table were analyzed through numerical simulation. The results indicate that compared with other models, the proposed MSBJ hysteresis model is more accurate and can be used to predict the seismic behavior of cable tray systems.

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