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Construction method for pile-anchor support of spiral cage core anchor rod
The invention relates to a construction method for a pile-anchor support of a spiral cage core anchor rod. The construction method comprises the following steps of S1, construction preparation; S2, hole position determination; S3, hole reaming and guiding; S4, pipe-following drilling; S5, anchorage section hole drilling; S6, anchor rod manufacturing; S7, anchor rod mounting; S8, supporting framework unfolding; S9, grouting; S10, anchor rod tensioning and locking; and S11, anchor sealing. By arranging a capsular bag capable of grouting and expanding and supporting frameworks matched with a spiral bar to unfold, a framework and bar cementing body with multiple framework structures is expanded and formed on an anchorage section of an anchor rod, and the diameter of the anchorage section is expanded. The framework and bar cementing body is high in structural strength, so that the drawing resistance of the anchor rod is improved greatly. Surrounding soil masses are compacted in the processes of unfolding the supporting frameworks and expanding the capsular bag. According to a correspondence principle of density of the soil masses, effective stress and shear strength, the strength of thesoil masses around the capsular bag is improved, so that the ultimate load of the anchor rod is improved greatly.
本发明涉及一种螺旋笼芯锚杆桩锚支护的施工方法，其包括S1施工准备，S2确定孔位，S3扩孔引孔，S4跟管钻孔，S5钻锚固段孔，S6锚杆制作，S7锚杆安装，S8展开支骨，S9注浆，S10锚杆张拉锁定，S11封锚；本发明通过设置可注浆扩张的囊袋，以及与螺旋筋配合展开的支骨，从而于锚杆的锚固段扩张形成具有多重骨架结构的骨筋固结体，扩张锚固段直径，并且骨筋固结体结构强度大，大大提高锚杆的抗拉拔能力，并且支骨展开、囊袋扩张的过程中同时挤密周围土体，根据土体的密度—有效应力—抗剪强度的对应原则，囊袋周围土体的强度提高，大大提高锚杆的极限荷载。
Construction method for pile-anchor support of spiral cage core anchor rod
The invention relates to a construction method for a pile-anchor support of a spiral cage core anchor rod. The construction method comprises the following steps of S1, construction preparation; S2, hole position determination; S3, hole reaming and guiding; S4, pipe-following drilling; S5, anchorage section hole drilling; S6, anchor rod manufacturing; S7, anchor rod mounting; S8, supporting framework unfolding; S9, grouting; S10, anchor rod tensioning and locking; and S11, anchor sealing. By arranging a capsular bag capable of grouting and expanding and supporting frameworks matched with a spiral bar to unfold, a framework and bar cementing body with multiple framework structures is expanded and formed on an anchorage section of an anchor rod, and the diameter of the anchorage section is expanded. The framework and bar cementing body is high in structural strength, so that the drawing resistance of the anchor rod is improved greatly. Surrounding soil masses are compacted in the processes of unfolding the supporting frameworks and expanding the capsular bag. According to a correspondence principle of density of the soil masses, effective stress and shear strength, the strength of thesoil masses around the capsular bag is improved, so that the ultimate load of the anchor rod is improved greatly.
本发明涉及一种螺旋笼芯锚杆桩锚支护的施工方法，其包括S1施工准备，S2确定孔位，S3扩孔引孔，S4跟管钻孔，S5钻锚固段孔，S6锚杆制作，S7锚杆安装，S8展开支骨，S9注浆，S10锚杆张拉锁定，S11封锚；本发明通过设置可注浆扩张的囊袋，以及与螺旋筋配合展开的支骨，从而于锚杆的锚固段扩张形成具有多重骨架结构的骨筋固结体，扩张锚固段直径，并且骨筋固结体结构强度大，大大提高锚杆的抗拉拔能力，并且支骨展开、囊袋扩张的过程中同时挤密周围土体，根据土体的密度—有效应力—抗剪强度的对应原则，囊袋周围土体的强度提高，大大提高锚杆的极限荷载。
Construction method for pile-anchor support of spiral cage core anchor rod
一种螺旋笼芯锚杆桩锚支护的施工方法
LIU BINGFENG (author) / LIU ZHIXING (author) / CHEN WEIXUE (author) / KANG XIANGYANG (author)
2020-09-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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