[1]马永春,邵旭东,梁才.全无缝桥梁接线路面拉伸力学特性理论和实验研究[J].地震工程与工程振动,2012,(04):131-138.
 MA Yongchun,SHAO Xudong,LIANG Cai.Theoretical and experimental study on tension-deformation mechanical properties of continuously reinforced concrete approach pavement of FJSBs[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2012,(04):131-138.
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全无缝桥梁接线路面拉伸力学特性理论和实验研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
期数:
2012年04期
页码:
131-138
栏目:
出版日期:
2012-08-28

文章信息/Info

Title:
Theoretical and experimental study on tension-deformation mechanical properties of continuously reinforced concrete approach pavement of FJSBs
作者:
马永春 邵旭东 梁才
湖南大学 土木工程学院, 湖南 长沙 410082
Author(s):
MA Yongchun SHAO Xudong LIANG Cai
School of Civil Engineering, Hunan University, Changsha 410082, China
关键词:
无缝桥梁接线路面骨架曲线单轴拉伸拉伸刚化效应
Keywords:
jointless bridgeapproach pavementskeleton curveuniaxial tensiontension stiffening effect
分类号:
TU442.5;P315.9;U448.1
摘要:
为了掌握和模拟全无缝桥梁接线路面弹塑性拉伸特性,本文基于钢筋和混凝土的单轴拉伸平均应力-应变本构模型,推导出接线路面的宏观弹塑性拉伸P-Δ理论模型;并对室内总长28 m的接线路面足尺模型,进行了拉伸试验。结果显示:(1)接线路面的理论与实验拉伸P-Δ骨架曲线在钢筋屈服前后都吻合得很好,可以直接用于全无缝桥梁抗震设计和损伤评估;(2)接线路面实验模型的拉伸变形量Δ高达14 cm时,仍未拉断,其延性甚好、有利于抗震。
Abstract:
Because the elastoplascic tension character of the Continuously Reinforced Concrete Approach Pavement (CRCAP) is sensitive to the seismic response of the Fully Jointless Semi-integral Bridges (FJSBs), a macro elastoplastic tension-deformation theoretical model(P-Δ model) of CRCAP was developed from the uniaxial tensile average stress-strain constitutive model of the steel bar and concrete and a tensile test was carried out by using a full scale experimental model of CRCAP with a length of 28 m.Results show that: the theoretical skeleton curve is in good agreement with the tested curve,whatever the steel bar is pre-yield or post-yield and the CRCAP is still not broken when its tensile deformation reaches up to 14 cm. Conclusion is that the theoretical skeleton P-Δ model can be used for the seismic design and the damage assessment of FJSBs and the high ductility of the CRCAP is helpful for the FJSBs to resist strong earthquakes.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2011-12-19;改回日期:2012-1-9。
作者简介:马永春(1981-),男,博士研究生,主要从事无缝桥梁抗震分析与设计研究.E-mail:stone110615@126.com
更新日期/Last Update: 1900-01-01