燃燒特性研究：電纜一般是以成束的形式來敷設(shè)，同時(shí)多集中布置在墻壁附近以及頂棚下方等特殊空間，如電纜隧道、電纜溝、廠房等，這使得電纜橋架火災(zāi)在上述特殊環(huán)境下往往表現(xiàn)出較為復(fù)雜的蔓延行為。研究不同布置形式下的橋架電纜燃燒特性，對于預(yù)防和控制電纜火災(zāi)具有重要意義。

　　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.

　　非常優(yōu)支撐跨度研究：為了降低海上油氣項(xiàng)目的總成本，同時(shí)不影響質(zhì)量和安全，研究如何確定非常長的電纜橋架支撐跨度，以減少支撐數(shù)量，降低電纜橋架系統(tǒng)的主要成本。通過有限元建模方法和簡化手算進(jìn)行比較，驗(yàn)證了在不增加電纜橋架強(qiáng)度（厚度）的情況下的非常長跨度，并從人工處理電纜橋架的角度驗(yàn)證了較長跨度的可施工性。結(jié)果表明，本文提出的非常優(yōu)跨度可以在不降低可施工性的情況下帶來更好的經(jīng)濟(jì)效益，如隨著跨度的增加，可以節(jié)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.

　　火災(zāi)事故調(diào)查與防火對策：通過調(diào)查一起電纜橋架火災(zāi)事故，探討電纜橋架和電線電纜的火災(zāi)危險(xiǎn)性和起火因素，提出了有效預(yù)防電纜橋架火災(zāi)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.

　　地震應(yīng)力快速預(yù)估方法：為了給出能夠快速、即時(shí)地預(yù)估 S2 型電纜橋架的應(yīng)力方法，根據(jù)電纜橋架的結(jié)構(gòu)特點(diǎn)將 S2 型支架振動(dòng)問題簡化為端部帶質(zhì)點(diǎn)的懸臂梁振動(dòng)模型，研究其對懸臂梁的參與系數(shù)、振型等影響。結(jié)果表明，該模型適用于預(yù)估電纜橋架的自振頻率、彎曲應(yīng)力等，并與反應(yīng)譜分析方法和抗震鑒定試驗(yàn)結(jié)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.

　　電纜火災(zāi)建模適用性研究：為了闡明電纜火災(zāi)在多隔間中的熱和煙霧傳播，法國輻射防護(hù)與核安全研究所（IRSN）在經(jīng)濟(jì)合作與發(fā)展組織（OECD）的 PRISME2 項(xiàng)目框架內(nèi)進(jìn)行了大規(guī)模多隔間火災(zāi)試驗(yàn)（CFS-2 試驗(yàn)）。通過將基于美國國家標(biāo)準(zhǔn)與技術(shù)研究院（NIST）開發(fā)的 FLASH-CAT（Flame Spread over Horizontal Cable Trays）的電纜橋架火源模型引入?yún)^(qū)域代碼 BRI2002，討論了每個(gè)托盤的點(diǎn)火延遲時(shí)間和水平火焰?zhèn)鞑ニ俣鹊姆椒ā?/p>

　　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 線路在電纜橋架中的鋪設(shè)問題：實(shí)際中的一個(gè)例子旨在闡明通往 IT 機(jī)柜的電纜穿過電纜橋架的邊緣并用束線帶固定可能存在的問題，如電纜被壓到電纜橋架邊緣導(dǎo)致?lián)p壞、電纜因自身重量從橋架中移出等。探討了未來安裝方面的變化以及具體的解決方法。

　　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.

　　基于振動(dòng)臺和作動(dòng)器的實(shí)時(shí)混合測試：為了準(zhǔn)確揭示電纜橋架系統(tǒng)的抗震性能，提出了一種基于振動(dòng)臺和作動(dòng)器的新型實(shí)時(shí)混合測試方法（RTHT-STA）。該方法使用振動(dòng)臺模擬地面運(yùn)動(dòng)，在振動(dòng)臺上設(shè)置位移模式控制的伺服液壓作動(dòng)器，真實(shí)模擬電纜橋架系統(tǒng)數(shù)值子結(jié)構(gòu)和實(shí)驗(yàn)子結(jié)構(gòu)之間的橫向剪切邊界條件。通過數(shù)值模擬和實(shí)驗(yàn)驗(yàn)證了該方法的有效性和準(zhǔn)確性，結(jié)果表明該方法穩(wěn)定可靠，與傳統(tǒng)振動(dòng)臺試驗(yàn)結(jié)果的相關(guān)系數(shù)高達(dá) 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.

　　電纜橋架主次梁節(jié)點(diǎn)滯回模型研究：在一些地震中，建筑物中的電纜橋架系統(tǒng)遭受了嚴(yán)重破壞甚至倒塌，這通常是由于主次梁節(jié)點(diǎn)（MSBJ）的失效引起的。本研究基于循環(huán)加載試驗(yàn)，提出了一種用于 MSBJ 的滯回模型，該模型能夠準(zhǔn)確反映損傷機(jī)制。通過數(shù)值模擬分析了采用不同節(jié)點(diǎn)模型的電纜橋架系統(tǒng)在振動(dòng)臺上的動(dòng)力特性、地震響應(yīng)和損傷情況。結(jié)果表明，與其他模型相比，所提出的 MSBJ 滯回模型更準(zhǔn)確，可用于預(yù)測電纜橋架系統(tǒng)的抗震行為。

　　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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