RESEARCH ON NON-LINEAR MOMENT-CURVATURE OF UNBONDED POST-TENSIONED PRECAST CONCRETE BEAMS
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摘要: 在对4个无粘结预应力直接装配节点试件进行试验研究的基础上,采用弯矩-曲率分析方法对4个无粘结预应力直接装配节点试件进行了弹性和弹塑性阶段的分析,建立了装配节点弯矩-曲率模型,并编制了相应的计算程序,用试验结果检验了理论分析值,证明吻合良好,为研究预应力装配结构体系在大震情况下的非线性性能,提供了合理有效的非线性曲率模型。
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关键词:
- 无粘结预应力装配节点 /
- 非线性性能 /
- 弯矩曲率分析 /
- 弯矩曲率模型
Abstract: On the basis of test researching on four unbonded prestressed assembly specimens,it was used the tool of moment-curvature to analyse the performances on elastic and elastic-plastic phase of the four unbonded prestressed precast samples.It was gained the moment-curvature model of prestressed precast specimens,by which the validity of theoretical analysis was verified by comparing the test results.Computing programmed was made and the theoretical results showed a good agreement with those of the test.Which provided a reasonable and effective nonlinear moment-curvature model for studying the non-linear performance of prestressed precast structures under a big earthquake. -
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