本文選題：裝配式結(jié)構(gòu) + 預(yù)制混凝土梁��； 參考：《同濟(jì)大學(xué)學(xué)報(自然科學(xué)版)》2017年09期

【摘要】：預(yù)制混凝土梁端預(yù)埋槽鋼節(jié)點是一種用于裝配式耗能減震結(jié)構(gòu)體系的新型節(jié)點.完成了12根兩端預(yù)埋槽鋼的預(yù)制混凝土梁靜力承載力試驗,考慮了槽鋼預(yù)埋深度、梁端箍筋間距、梁跨中空腔和槽鋼偏心等因素對節(jié)點承載力的影響.試驗得到了槽鋼撬出破壞和梁端部混凝土壓碎兩種破壞模式.試驗結(jié)果表明,節(jié)點承載力隨著槽鋼預(yù)埋深度的增加而增加;梁端部箍筋間距加密能明顯提高節(jié)點承載力和變形能力;梁跨中設(shè)置空腔對的節(jié)點承載力和變形能力影響較小;槽鋼偏心對梁產(chǎn)生額外的扭矩,降低了節(jié)點的承載力和變形能力.建立了數(shù)值分析模型,將數(shù)值分析結(jié)果和試驗結(jié)果進(jìn)行了對比,二者吻合良好,驗證了數(shù)值模型的有效性,為后續(xù)研究奠定了基礎(chǔ).
[Abstract]:Preburied channel joint at the end of precast concrete beam is a new type of joint used for assembly energy dissipation structure system. The static bearing capacity tests of 12 prefabricated concrete beams with preburied channel steel at both ends were completed. The influence of the depth of channel steel embedded, the space between stirrups at the end of beams, the span of beam cavity and the eccentricity of channel steel on the bearing capacity of joints were considered. Two failure modes of channel steel prying and concrete crushing at the end of beam are obtained. The experimental results show that the bearing capacity of the joints increases with the increase of the embedded depth of the channel steel, the joint bearing capacity and deformation capacity are obviously improved by the reinforcement spacing at the end of the beam, the bearing capacity and the deformation capacity of the joints are less affected by the setting of cavity in the middle of the beam span. The eccentricity of channel steel produces extra torque to the beam and reduces the bearing capacity and deformation capacity of the joint. The numerical analysis model is established, and the numerical analysis results are compared with the experimental results, which are in good agreement with each other. The validity of the numerical model is verified, which lays a foundation for further research.
【作者單位】： 同濟(jì)大學(xué)土木工程學(xué)院;
【基金】：“十三五”國家重點研發(fā)計劃(2016YFC0701603)
【分類號】：TU398.9

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