中风化岩地基中两种不同材质抗浮锚杆的承载性能和变形特性  

BEARING PERFORMANCE AND DEFORMATION CHARACTERISTICS OF ANTI-FLOATING ANCHORS FOR TWO DIFFERENT MATERIALS IN MODERATELY WEATHERED ROCK SITE

作　　者：朱磊[1] 张明义[1,2] 白晓宇[1,2] Zhu Lei Zhang Mingyi Bai Xiaoyu(School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao Technological University, Qingdao 266033, China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]青岛理工大学蓝色经济区工程建设与安全协同创新中心,山东青岛266033

出　　处：《工业建筑》2016年第12期78-83,145,共7页Industrial Construction

基　　金：国家自然科学基金资助项目(51278261);教育部高等学校博士学科点专项科研基金资助项目(20133721110003);山东省自然科学基金青年基金资助项目(ZR2016EEQ08);山东省高等学校科技计划项目(J16LG02);青岛市应用基础研究计划项目(16-5-1-39-jch)

摘　　要：为深入研究中风化岩中玻璃纤维增强材料(GFRP)抗浮锚杆的承载性能和变形特性,通过改进的位移测试装置记录了钢筋和GFRP两种不同材质抗浮锚杆发生破坏时杆体和锚固段的上拔量。结果表明:两种锚杆破坏形态为拔断破坏或滑移剪切破坏,承载力和变形均能够满足工程需求。研究结果充分验证了GFRP锚杆的先进性和合理性;得到了抗浮锚杆最佳锚固长度和承载力取值方法;提出了锚杆拉拔试验中增设杆体位移测试装置的建议。In order to further study the bearing performance and deformation characteristics of GFRP anti-floating anchor in moderately weathered rock,the slippage at failure of anchor and anchorage body of anti-floating anchors for rebar and GFRP two different materials were recorded by the improved displacement test device. The results showed that the failure modes of two kinds of anchors were fracture failure and slip shear failure,bearing capacity and deformation could meet the need of projects. The research results verified advancement and rationality of GFRP antifloating anchors; the optimal length of anchorage and value of bearing capacity were got,some suggestions on setting displacement test device in pullout test were proposed.

关 键 词：中风化花岗岩 GFRP抗浮锚杆 承载性能 变形特性 最佳锚固长度 

分 类 号：TU476[建筑科学—结构工程]