CAJ | 학술논문

端部包裹式扩体锚杆是一种通过调整预制囊袋大小，改变扩体段空间形态及几何尺寸进而满足工程中扩体锚杆设计承载能力的新型锚杆。结合实际工程介绍了一组新型锚杆的抗拔破坏试验情况，并与传统锚杆进行了对比，试验结果表明新型扩体锚杆通过高压注浆和囊袋膨压扩孔有效地解决了扩体锚固段注浆体的抗压强度低及尺寸偏小的问题，克服了传统锚杆在软弱土层中施工困难的缺点，通过调节预制囊袋的大小显著提升了扩体锚杆的抗拔承载力，现场试验成果及数据对研究新型扩体锚杆的受力机理及破坏模式提供了完整的资料，对扩体锚杆在工程实践中的推广及应用具有参考意义。
단부포과식확체묘간시일충통과조정예제낭대대소，개변확체단공간형태급궤하척촌진이만족공정중확체묘간설계승재능력적신형묘간。결합실제공정개소료일조신형묘간적항발파배시험정황，병여전통묘간진행료대비，시험결과표명신형확체묘간통과고압주장화낭대팽압확공유효지해결료확체묘고단주장체적항압강도저급척촌편소적문제，극복료전통묘간재연약토층중시공곤난적결점，통과조절예제낭대적대소현저제승료확체묘간적항발승재력，현장시험성과급수거대연구신형확체묘간적수력궤리급파배모식제공료완정적자료，대확체묘간재공정실천중적추엄급응용구유삼고의의。
head-packaged underreamed ground anchor refers to a new product that could meet the design bear-ing capacity though adjusting the precast pouch size, changing body section and geometry size.Thus, a set of pul-ling damage test was introduced, and compared with traditional anchor, the test results show that the new anchor ef-fectively solve the problem of low compressive strength and small size by high pressure grouting and capsule expand-ed, overcome the traditional anchor construction difficulty in the soft soil layer, and significantly improved the bear-ing capacity of anchor by adjusting the size of the calsule, on-site test results provided a complete data for researc-hing stress mechanism and failure mode and have guiding significance for the popularization and application in engi-neering practice.