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工程科学与技术:2013,45(4):27-33
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无机胶植筋式后锚固连接的抗火性能
(1.山东建筑大学 土木工程学院;2.山东潍坊昌大集团)
Fire Resistance Behavior of the Inorganically Post-installed Rebar Connection
(1.School of Civil Eng.,Shandong Jianzhu Univ.;2.Shandong Weifang Changda Group Ltd Co.)
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投稿时间:2012-10-31    修订日期:2013-04-14
中文摘要: 为了研究无机胶植筋式后锚固连接的抗火性能,进行了无机胶与有机胶植筋真实火灾的对比试验。在设计试件时考虑了锚固深度和植筋胶种类2种影响因素。试验时先通过杠杆对试件施加荷载,并在试验中保持恒定不变,然后按照ISO834国际标准升温曲线对试件进行升温,通过植筋梁的挠度来控制试验进程,直至植筋梁试件挠度发展较大而破坏。试验中使用高温应变片、差动式位移传感器以及热电偶来采集试验的关键数据。试验结果表明:锚固深度和植筋胶种类对植筋构件的抗火性能均有较大影响。在火灾作用下有机胶植筋最终将发生锚固破坏,破坏较突然,且耐火极限短。无机胶植筋的受弯构件,在满足一定锚固深度的前提下,在火灾作用下不会发生锚固破坏,破坏形态同一般的钢筋混凝土梁。
中文关键词: 高温  植筋  无机胶  锚固深度
Abstract:A serial of fire tests were conducted to study the fire resistance of the post-installed rebar connection with organic and inorganic adhesive. Two factors of the anchorage depth and types of anchorage glue were considered in the tests. Loads were applied through lever and remained constant throughout the whole process of the tests. The temperatures of connections were elevated following the ISO834 curve and the failure was controlled by excessive deflection of post-installed rebar beams. The test showed that anchorage depth and types of anchorage glue have a great effect to the performance of the reinforced beams under fire. Beams using organic adhesive fails suddenly with obvious rebar slip, and behaves with poor fire endurance, meanwhile using inorganic adhesive, the failure mode of flexural members under fire is the same as that of the general RC beams.
文章编号:201200839     中图分类号:    文献标志码:
基金项目:住房和城乡建设部2010年科学技术项目计划(2010-K3-53);山东省教育厅资助项目(J10LE52)
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引用文本:
王欣,姜常玖,惠守江,赵考重.无机胶植筋式后锚固连接的抗火性能[J].工程科学与技术,2013,45(4):27-33.
Wang Xin,Jiang Changjiu,Hui Shoujiang,Zhao Kaozhong.Fire Resistance Behavior of the Inorganically Post-installed Rebar Connection[J].Advanced Engineering Sciences,2013,45(4):27-33.