新型膨胀螺栓锚固下空心砖的应力场分析  

Stress field analysis of hollow brick anchored by new expansion bolt

作　　者：栗青[1] 孙利云[1] 陈四利[1] 安跃军[2] 

机构地区：[1]沈阳工业大学建筑工程学院,沈阳110178 [2]沈阳工业大学电气工程学院,沈阳110178

出　　处：《沈阳工业大学学报》2009年第1期103-106,共4页Journal of Shenyang University of Technology

基　　金：辽宁省教育厅基金资助项目(20060612)

摘　　要：针对专用于空心、酥松、软质和易碎墙体材料的新型膨胀螺栓锚固能力可靠性问题,采用试验和有限元模拟的方法,分别计算了不同位置、不同拉力值下膨胀螺栓的锚固力和空心砖的应力.试验与有限元软件分析结果表明:虽然膨胀螺栓的极限锚固力在不同的位置上有所不同,但均能达到并略超过标准所规定的设计值,从而验证了能形成"自螺母效应"的专用膨胀螺栓在空心砖中应用的可靠性,解除了社会各界对多孔砖锚固可靠性的疑虑,有利于该技术的广泛应用与推广.In order to check the anchoring reliability of new expansion bolts specifically used for hollow, loose, soft and fragile wall materials, the anchorage force of expansion bolts and the stress of hollow brick at different positions and tensile loads were measured by experiments and calculated by finite element simulation. The result indicates that although the ultimate anchoring strengths of expansion bolts are different at various positions, and can reach or slightly exceed the designed value. This proves the usability of the special expansion bolts with self-nut effect in hollow brick, and thus relieves the worry about the anchoring reliability of porous bricks, which is beneficial to the wide application of this technology.

关 键 词：空心砖 膨胀螺栓 锚固性能 应力场 有限元法 

分 类 号：TU475[建筑科学—结构工程]