Field Test on Creep Characteristics of BFRP Anti-floating Anchor
BAI Xiaoyu
ZHENG Hailong
CUI Weijiu
SUN Gan
YAN Nan
Abstract：Based on an actual project in Qingdao,basalt fiber reinforced polymer(BFRP)anti-floating anchors were applied to the anti-floating project of coastal underground structures,and on-site creep performance tests on the BFRP anti-floating anchors were carried out.Through real-time testing of anchor bar and anchor soil displacement,the evolution characteristics of load-displacement of BFRP anti-floating anchor bar were clarified,and the spatial and temporal distribution law of the internal force of anchor bar of BFRP anti-floating anchor bar was revealed.The results show that the displacement of anchor bar in BFRP anti-floating anchor bar is affected by the load level and loading time,and the displacement of anchor bar and anchor soil grows with the increase of loading time showing two stages of initial creep and steady state creep.At the maximum load level,the axial force of the anchor bar shows a non-linear distribution along the depth,which decays gradually with the increase of depth,and tends to zero at the deepest point.At the same depth,the axial force decreases gradually with loading time.The interfacial shear stress between the anchor bar and anchor soil first increases and then decreases with the increase of depth,and the peak stress appears at approximately 0.75 m from the orifice.The peak stress decreases with the increase of loading time,and the shear stress attenuation is concentrated in the range of 0.7-1.7 m.
Keywords：BFRP anti-floating anchorcreepinternal forcecutting line stiffnessfield test
Publication Date：2026-01-31
Online Publishing Date：2026-03-17(First online date of this platform, not the publication date of the document)
Pages：7( 140-146 )