公开(公告)号：US20240102386A1

公开(公告)日：2024-03-28

申请号：US18528644

申请日：2023-12-04

申请人： Fuzhou University

发明人： Xuezhen WU ,  Yujing JIANG ,  Tao DENG ,  Gang WANG ,  Zhenchang GUAN ,  Qing YE

IPC分类号： E21D21/00

CPC分类号： E21D21/006 ,  E21D21/0033 ,  E21D21/008

摘要： The present disclosure relates to a construction method for a deformable anchor cable capable of being prestressed. The anchor cable includes an outer sleeve, a shrinkage pipe, an inner sleeve, a steel strand, an anchor and a tray. When the anchor cable is in use, a hole is drilled first, then the anchor cable is mounted in the drilled hole, and finally a prestress is applied to the steel strand of the anchor cable. According to the construction method, the construction is convenient; the anchor cable has the characteristics of high strength and large deformation, and can be easily prestressed; and the large deformation is realized by squeezing the inner sleeve by means of the anchor, which completely overcomes the problem of breaking a cold-drawn rod during the large deformation process.

公开(公告)号：US20220397037A1

公开(公告)日：2022-12-15

申请号：US17835037

申请日：2022-06-08

申请人： Fuzhou University

发明人： Xuezhen WU ,  Yujing JIANG ,  Tao DENG ,  Gang WANG ,  Zhenchang GUAN ,  Qing YE

IPC分类号： E21D21/00

摘要： The present disclosure relates to a construction method for a deformable anchor cable capable of being prestressed. The anchor cable includes an outer sleeve, a shrinkage pipe, an inner sleeve, a steel strand, an anchor and a tray. When the anchor cable is in use, a hole is drilled first, then the anchor cable is mounted in the drilled hole, and finally a prestress is applied to the steel strand of the anchor cable. According to the construction method, the construction is convenient; the anchor cable has the characteristics of high strength and large deformation, and can be easily prestressed; and the large deformation is realized by squeezing the inner sleeve by means of the anchor, which completely overcomes the problem of breaking a cold-drawn rod during the large deformation process.

公开(公告)号：US20230349293A1

公开(公告)日：2023-11-02

申请号：US17616647

申请日：2021-10-14

申请人： FUZHOU UNIVERSITY

发明人： Xuezhen WU ,  Tao DENG ,  Zhenchang GUAN ,  Yujing JIANG ,  Sihong LIU

IPC分类号： E21D20/02 ,  E21D21/00

CPC分类号： E21D20/025 ,  E21D20/021 ,  E21D21/008

摘要： The present invention relates to a support method of preset internal cable for in-situ tunnel expansion project, comprising a cable, lockset and an anchoring agent, wherein before the excavation of the newly-built tunnel, a borehole is drilled into the surrounding rock from the in-situ tunnel, and the cable is installed in the borehole and pre-stressed, so as to play a supporting role at the moment of excavation of the newly-built tunnel. The cable is fixed in the depth of the surrounding rock by the anchoring agent, and the lockset of the cable is set at the position of the excavation contour line of the newly-built tunnel inside the surrounding rock. The present invention provides a method that does not interfere with the excavation construction and can effectively support the surrounding rock of the expanded tunnel in advance. It breaks through the “excavation first and then supports” model in the previous tunnel construction, and uses the space of the in-situ tunnel for pre-support, and by applying prestress, the deformation of surrounding rock can be controlled to the maximum extent.