蜂窝形缓冲装置在30m简支桥中的设置

发布时间：2018-02-04 12:20

  本文关键词： 简支梁桥 缓冲装置 有限元分析 地震烈度 抗震性能　出处：《江苏大学学报(自然科学版)》2017年01期 　论文类型：期刊论文

【摘要】：针对JTG/T B02-01—2008《公路桥梁抗震设计细则》中对桥梁设置弹性垫块以达到地震时缓和冲击和限制梁位移的建议,对30 m简支梁桥中的缓冲装置进行了定性定量的研究.首先,通过模型计算,确定了在不同场地类型和不同地震烈度区的条件下,30 m简支梁桥中弹性垫块的合理刚度取值范围.计算结果表明:垫块刚度为主梁刚度的γ倍(0.01≤γ≤0.50)时,对各区桥梁均能达到理想的抗震保护效果;以计算结果为基础,采用常用工业橡胶材料,设计了一款蜂窝形缓冲装置,并通过往复压缩试验得到其力学性能;对不同场地类型和不同地震烈度区的30 m简支梁桥设置蜂窝形缓冲装置的合理个数提出了建议;通过计算,验证了蜂窝形缓冲装置抗震效果的有效性.
[Abstract]:In view of JTG/T B02-01-2008 detailed rules for Seismic Design of Highway Bridges, it is suggested that elastic cushions should be set up for bridges in order to mitigate the impact and limit the displacement of beams during earthquakes. The buffer device in 30 m simply supported beam bridge is studied qualitatively and quantitatively. Firstly, through the model calculation, the conditions of different site types and different seismic intensity areas are determined. The reasonable stiffness range of elastic cushion in 30 m simply supported beam bridge is calculated. The results show that when the stiffness of the main beam is 0.01 鈮，

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