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Case History: Finite Element Analysis of Time Dependent Settlement of LakeJessup Bridge Embankment in Central Florida

机译:案例历史:佛罗里达州中部杰西普湖大桥路堤时变沉降的有限元分析

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Finite Element Analysis (FEA) was performed to evaluate time dependentsettlement of a three-stage approach embankment of Lake Jessup Bridge in CentralFlorida. The subsoil consisted of fine silty to clayey sands with interbedded shallowclays. FEA was performed utilizing Mohr-Coulomb and Soft Soil Creep models,which captured settlement and pore water pressure profiles during construction stages.The Soft Soil Creep model provided better predictions for the long term secondarysettlement. Settlement plates were installed to monitor the in-field settlement duringand after construction. The monitoring program continued for 8 months, at which,settlement rates substantially decreased. The recorded settlement-time profile was ingeneral agreement with the settlement profile predicted using numerical analysis.
机译:进行了有限元分析(FEA)以评估时间依赖性 中部杰西普湖大桥三级引路堤的沉降 佛罗里达。底土由细粉质粉质至黏土砂质和浅层夹层组成 黏土。利用Mohr-Coulomb模型和“软土蠕变”模型进行了有限元分析, 在施工阶段捕获了沉降和孔隙水压力曲线。 软土蠕变模型为长期次生提供了更好的预测 沉降。安装了沉降板以监控现场的沉降 和施工后。监测计划持续了8个月,在此期间, 结算率大幅下降。记录的结算时间配置文件位于 使用数值分析预测的沉降轮廓大致一致。

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