CAJ | 학술논문

近几十年来，土层锚杆技术在水工建筑、高耸结构、深基坑工程及边坡工程中得到广泛应用，尤其是端头扩大型锚杆的不断改进和应用，它不仅可利用锚固段和孔底扩大头的端头效应提供足够的锚固抗拔力，同时可减少锚固深度及孔径和上拔位移量，因此具有广泛的适用性。针对将扩大头锚杆作为抗浮锚杆应用于地下工程中的情形，提出了极限抗拔承载力的计算公式。基于算例分析和数值模拟进一步对其进行验证，结果表明了该理论公式的有效性和适用性，并对极限抗拔承载力的影响因素进行讨论，对建筑结构的地下抗浮锚杆的设计有很好的借鉴作用。
근궤십년래，토층묘간기술재수공건축、고용결구、심기갱공정급변파공정중득도엄범응용，우기시단두확대형묘간적불단개진화응용，타불부가이용묘고단화공저확대두적단두효응제공족구적묘고항발력，동시가감소묘고심도급공경화상발위이량，인차구유엄범적괄용성。침대장확대두묘간작위항부묘간응용우지하공정중적정형，제출료겁한항발승재력적계산공식。기우산례분석화수치모의진일보대기진행험증，결과표명료해이론공식적유효성화괄용성，병대겁한항발승재력적영향인소진행토론，대건축결구적지하항부묘간적설계유흔호적차감작용。
In recent decades,the soil anchor technique has been extensively applied in hydraulic structure,high-rise structure,deep foundation pit engineering and slope engineering.Especially,the expanding head anchor has been con-stantly improved and applied,which could not only provide the adequate anchorage pull-out resistance,but also reduce the anchoring depth,aperture and displacement by utilizing the enlarged end effect in anchorage segment and bottom,so it has extensive applicability.For using the expansion head bolt as anti-floating anchor in underground engineering,the calculation formula of ultimate uplift bearing capacity is proposed here.Based on the example analysis and numerical sim-ulation for further verification,the results show that the theoretical formula is effective and applicable,which could pro-vide good reference for the deign of the anti-floating anchor in underground structures.