一种FRP筋锚固用夹片、加工方法及锚固方法

本发明公开了一种FRP筋锚固用夹片、加工方法及锚固方法，其中FRP筋锚固用夹片呈扇形，在所述夹片的内部为用于放置FRP筋的圆弧形槽，所述夹片的外表面为圆锥面，所述夹片沿长度方向包括变刚度荷载传递第一介质段和变刚度荷载传递第二介质段，夹片刚度自加载端至自由端逐渐增大；所述变刚度荷载传递第一介质段由经树脂浸润的纤维短切纱固化而成；所述变刚度荷载传递第二介质段由经树脂浸润的石英砂固化而成。本发明变刚度荷载传递介质的纤维、石英砂含量和横向刚度自加载端至自由端逐渐增大，可以缓解或消除FRP筋在加载端的"切口效应"，避免应力集中造成FRP筋的横向剪切破坏先于拉伸破坏。 The inve...

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Bibliographic Details
Format Patent
LanguageChinese
Published 26.02.2021
Subjects
BUILDING
BUILDING MATERIALS
FIXED CONSTRUCTIONS
STRUCTURAL ELEMENTS
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Summary:本发明公开了一种FRP筋锚固用夹片、加工方法及锚固方法，其中FRP筋锚固用夹片呈扇形，在所述夹片的内部为用于放置FRP筋的圆弧形槽，所述夹片的外表面为圆锥面，所述夹片沿长度方向包括变刚度荷载传递第一介质段和变刚度荷载传递第二介质段，夹片刚度自加载端至自由端逐渐增大；所述变刚度荷载传递第一介质段由经树脂浸润的纤维短切纱固化而成；所述变刚度荷载传递第二介质段由经树脂浸润的石英砂固化而成。本发明变刚度荷载传递介质的纤维、石英砂含量和横向刚度自加载端至自由端逐渐增大，可以缓解或消除FRP筋在加载端的"切口效应"，避免应力集中造成FRP筋的横向剪切破坏先于拉伸破坏。 The invention discloses an FRP (fiber reinforced polymer) rebar anchoring clamp piece, a manufacturing method thereof and an anchoring method thereof. A circular arc groove for holding FRP rebars is formed in the sector-shaped FRP rebar anchoring clamp piece, the outer surface of the FRP rebar anchoring clamp piece is a circular conical surface, the FRP rebar anchoring clamp piece comprises a first medium segment for variable-stiffness load transfer and a second medium segment for variable-stiffness load transfer along the length direction, the stiffness of the FRP rebar anchoring clamp piecegradually increases from the loading end to the free end, and the first medium segment for variable-stiffness load transfer is formed by curing
Bibliography:Application Number: CN201910162243