期刊论文

Study on the seismic behavior of double-limb thin-walled piers based on plastic hinge model

中文

自然灾害学报

1004-4574

2019

28

3

130-140

10.13577/j.jnd.2019.0315

国家自然科学基金项目（51178473）~~；

本校为第一机构

为研究基于塑性铰模型的双肢薄壁墩的抗震性能,结合 4种塑性铰模型、基底纵筋滑移模型及双肢薄壁墩简化计算模型,计算其在低周反复荷载作用下的墩顶变形及抗推承载力。建立空间非线性模型,计算分析该桥墩在低周反复荷载作用下的力学性能及破坏形态。同时,制作双肢薄壁墩的缩尺模型,通过拟静力试验研究其破坏形态、滞回曲线及骨架曲线。结果表明:理论计算、数值模拟与试验结果吻合良好,理论计算模型能够对该试验墩在低周反复荷载作用下的抗推承载力进行较为准确的计算,而且有限元模型可对破坏形态进行仿真;试验墩主要呈现以弯曲破坏为主的“弯剪破坏模式”,滞回曲线“捏缩”效应明显;参数分析结果...

In order to study the seismic behavior of double-limb thin-walled piers based on plastic hinge model, the deformation and the thrust bearing capacity of pier under low cyclic loading are calculated by combining four kinds of plastic hinge models, the longitudinal rib slip model and the simplified calculation model of double-limb thin-walled pier. A spatial nonlinear model is established. The mechanical properties and failure modes of the pier under low cyclic loading are calculated. At the same time, scale models of double-limb thin-walled piers are made. And the failure mode, hysteretic curve...