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钢-混凝土组合桥面板滑移及掀起效应研究

, PP. 39-45

Keywords: 桥梁工程,钢-混凝土组合桥面板,光纤光栅测试技术,滑移掀起,开裂

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Abstract:

?为了研究钢-混凝土组合桥面板的混凝土开裂、钢与混凝土界面之间的滑移及掀起效应,设计了采用开孔钢板剪力连接件的钢-混凝土组合桥面板试验构件,并进行了负弯矩作用下的全过程试验研究。引入光纤光栅测试技术,完成了试验构件的滑移、掀起及开裂等的测试;采用有限元方法建立了试验构件的数值仿真模型,并将计算结果与试验结果进行了对比分析。研究结果表明:光纤光栅传感器能较准确地观测到开裂荷载,且与应变片测试结果吻合较好;对于普通应变片难以观测的滑移和掀起效应,光纤光栅传感器均表现出较强的优越性。

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