新型碳纤维索股锚固体系理论与试验研究

发布时间：2018-03-27 05:17

本文选题：桥梁工程　切入点：锚具　出处：《中国公路学报》2014年12期

【摘要】：为实现对碳纤维增强复合材料(CFRP)索股的科学锚固,促进CFRP索股在土木工程特别是桥梁工程中的应用,开发了复合式CFRP索股粘结型锚固体系,建立了复合式CFRP索股粘结型锚固体系计算理论和设计准则,并对该体系进行了优化设计;通过静载张拉试验对新型锚固体系的综合锚固性能进行了实测,并根据试验结果对设计计算理论的可靠性进行了验证。结果表明:新型锚固体系锚固区压应力分布更加合理,其分布较传统锚具有着根本性的变化;锚固区粘结应力沿轴向分布较传统锚具更加均匀,受荷端无应力集中现象,新型锚固体系能使各CFRP筋均匀受力,锚固效率系数超过95%。
[Abstract]:In order to realize the scientific anchoring of carbon fiber reinforced composite (CFRP) strands and promote the application of CFRP cables in civil engineering, especially in bridge engineering, a composite CFRP cable bonding anchoring system was developed. The calculation theory and design criteria of composite CFRP cable bonding anchoring system are established, and the optimum design of the system is carried out, and the comprehensive anchoring performance of the new type anchoring system is measured by static load tension test. The reliability of the design calculation theory is verified according to the test results. The results show that the pressure stress distribution in the anchoring area of the new type of Anchorage system is more reasonable and the distribution is fundamentally different from that of the traditional anchors. The distribution of bond stress along the axial direction is more uniform than that of the traditional anchors, and there is no stress concentration at the end of the anchoring. The new anchoring system can make the CFRP tendons force uniformly, and the coefficient of anchoring efficiency is more than 95%.
【作者单位】：宁波大学建筑工程与环境学院;北京建筑大学工程结构与新材料北京市高校工程研究中心;西南交通大学土木工程学院;
【基金】：国家高技术研究发展计划(“八六三”计划)项目(2008AA11Z101) 国家自然科学基金项目(51208269) 浙江省公益性技术应用研究计划项目(2014C33009) 宁波市自然科学基金项目(2013A610197)
【分类号】：U445.72

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