基于纖維模型的地下交通箱型隧道數(shù)值分析
陳霄1，田礫1，姜柱1，2
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（1 青島理工大學(xué)土木工程學(xué)院，青島 266033 2青島艾璧希建筑科技咨詢公司，青島 266033）
[摘要] 用等價粘性阻尼系數(shù)對既有的箱型鋼筋混凝土地下結(jié)構(gòu)模型試驗的耗能性能進行了評價；利用M-Φ關(guān)系和纖維模型分別對試驗體進行了數(shù)值分析，分析結(jié)果表明，纖維模型因考慮開裂后構(gòu)件的伸長受約束而導(dǎo)致軸壓增大、抗彎強度提高，計算結(jié)果與實驗結(jié)果吻合良好。[關(guān)鍵詞] 箱型隧道；等價粘性阻尼系數(shù)；纖維模型中圖分類號：TU921 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2013)S2-0088-04作者簡介：陳霄，碩士研究生，526064013@qq.com。Numerical Analysis of underground box tunnel based on fiber modelChen Xiao1, Tian Li1, Jiang Zhu1,2（1 School of Civil Engineering ,Qingdao Technological University, Qingdao 266033, China; 2 Qingdao ABC Construction Technology Consulting Company, Qingdao 266033, China）Abstract：The energy consumption performance of an existing underground structure experiment of reinforced concrete box-model was evaluated numerically by equivalent viscous damping coefficient in this paper. According to the M-Φ relationship and fiber model, the numerical analysis of the experiments was carried out. The results show that the numerical simulation results is close with the experimental data，because the constraint of member elongation caused by concrete crack has been considered in fiber model.Keywords：box tunnel;equivalent viscous damping coefficient;fiber model
