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快凝无机植筋胶栓的锚固强度与锚固刚度试验研究*
尚守平1,李宁1,胡向军1,2
摘 要
(1 湖南大学土木工程学院, 长沙 410082; 2 河南徐辉建筑工程设计有限公司, 郑州 450000)
 
[摘要]开发出一种新型快凝无机植筋胶栓,并分析了其植筋机理。通过试验确定其胶凝材料的配合比,对胶凝材料的抗压强度和凝结时间进行了研究。通过在混凝土试块上的植筋拉拔试验,对比不同条件下的植筋极限拉拔承载力,分析各因素对锚固强度的影响,量测部分植筋试件的滑移量并绘制荷载-位移曲线。试验表明:在合理的植筋天数和锚固深度下,该新型快凝无机植筋胶栓在水平面、竖直面和仰面都有较好的锚固性能。
[关键词]无机胶凝材料; 快速凝固; 拉拔试验; 极限拉拔承载力
中图分类号:TU526文献标识码:A文章编号:1002-848X(2015)09-0076-05
 
Experimental research on anchoring strength and rigidity of rapid-solidification inorganic planting bolt
Shang Shouping1,  Li Ning1,  Hu Xiangjun1,2
(1 College of Civil Engineering, Hunan University, Changsha 410082, China; 2 Henan Xuhui Architecture & Engineering Co., Ltd., Zhengzhou 450000, China)
 
Abstract: A new rapid-solidification inorganic planting bolt was developed and its anchorage mechanism was analyzed. The mix proportion of the cementitious material was determined by experiment, and its compressive strength and setting time were studied. Through the anchorage drawing experiment on the concrete substrate, the drawing ultimate bearing capacities under different conditions were compared, and effects of different factors on anchoring strength were analyzed. The shear slips of parts of the anchorage specimens were measured and the load-displacement curves were obtained. Experimental results show that the new inorganic  planting bolt has very good anchoring performance in horizontal plane, vertical surface and the top surface with reasonable planting bar  time and anchorage depth.
Keywords: inorganic cementitious material; rapid\|solidification; anchorage drawing experiment; drawing  ultimate bearing capacity
 
*国家十二五科技支撑项目(2011BAJ08B02),湖南省科技计划重点项目(06sk4057)。
作者简介:尚守平,教授,博士生导师,Email:sps@hnu.edu.cn。
 
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