新型夹心墙用耐腐蚀拉结件受力性能试验  

Experimental study on mechanical performance of new corrosion resistant tie for cavity wall

作　　者：张延年[1] 李恒[1] 刘明[1] 张洵[1] 李立东[1] 

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《沈阳工业大学学报》2010年第2期228-234,共7页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(50508008);中国博士后科学基金资助项目(20090450423);建设部研究开发项目(2008-k3-10)

摘　　要：为解决夹心墙用拉结件的耐腐蚀性问题,研究一种新型耐腐蚀拉结件——塑料钢筋拉结件的受力性能.通过L形和U形塑料钢筋拉结件灰缝试件试验模拟Z形和环形塑料钢筋拉结件受拉状态,并通过单侧交替反复拉拔试验研究环型塑料钢筋拉结件不均匀受力的特点.塑料钢筋拉结件能发挥比普通钢筋拉结件更优越的受力性能和变形性能.在遭受大震作用时,塑料钢筋拉结件所传递的最大地震力小于其极限拉拔力最小值.环型塑料钢筋拉结件的受力性能可以满足夹心墙的使用要求.通过锚固影响因素分析,提出了新形式拉结件,并给出不同拉结件的设计参数建议.参考相关规范,提出拉结件的构造措施建议和选型原则.In order to solve the corrosion resistant problem of steel tie for cavity wall,the mechanical performance of new corrosion resistant tie,i.e.,plastic steel tie,was investigated.The tensile status of Z-shaped and ring shaped plastic steel ties were simulated through an experiment on mortar joint sample of Lshaped and U-shaped plastic steel ties.The uneven forcing characteristics of ring shaped plastic steel tie were studied through performing the unilateral alternate drawing experiment on ring shaped plastic steel tie.The experimental results show that the tensile properties and deformation performance of plastic steel tie are more superior to those of general steel tie.With suffering large earthquak,the maximum earthquake force transferred by plastic steel tie is far less than the minimum ultimate drawing force.It indicates that the mechanical performance of ring shaped plastic steel tie can satisfy the usage requirement for cavity wall.Through analyzing the factors affecting on anchoring force of plastic steel tie,new form of plastic steel tie was proposed and the design parameter suggestion for various plastic steel tie was given.In addition,some suggestions for construction measures and selection rules of plastics steel tie were presented with refering to the related criterions.

关 键 词：夹心墙 耐腐蚀 拉结件 拉拔试验 受力性能 变形性能 参数设计 构造措施 

分 类 号：P315.96[天文地球—地震学]