Prestressed monitoring anchor rod structure and tensioning method
A prestressing and bolting technology, which is used in foundation structure engineering, foundation structure testing, sheet pile wall, etc. Effect
Inactive Publication Date: 2020-11-20
中国水利水电建设工程咨询北京有限公司 +1
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Problems solved by technology
[0002] At present, engineering prestressed anchor bolts are mainly tensioned by jack or torque wrench. The jack tensioning process is heavy and complicated, while torque wrench tensioning has the characteristics of fast, light and efficient. Combined with engineering needs, some prestressed anchor bolts It is necessary to install a stress gauge to monitor the stress and deformation of the supporting object; due to the special structure of the stress gauge, it is easy to be damaged by torsion when the torque wrench is used for tension, so measures should be taken to ensure that no damage occurs when the torque wrench is stretched
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] The purpose of the present invention is to provide a prestressed monitoring bolt structure and a tensioning method, which can prevent the strain gauge from being damaged by torsion, and ensure that the axial force of the prestressed bolt meets the design requirements during tensioning.
[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detai...
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The invention discloses a prestressed monitoring anchor rod structure and a tensioning method, and relates to the technical field of building engineering support. The structure comprises a prestressedanchor rod, a stress meter, a mortar stop plug, a nut, a guide assembly, a fixing assembly, a grouting assembly, an exhaust assembly and a plurality of centering supports; the prestressed anchor rodcomprises a first anchor rod segment and a second anchor rod segment, wherein the first anchor rod segment, the stress meter and the second anchor rod segment are fixedly connected in sequence from front to back, the mortar stop plug fixedly sleeves the first anchor rod segment, the plurality of centering supports are fixed on the second anchor rod segment, the guide assembly and the nut sequentially sleeve the rear part of the second anchor rod segment, the nut is in threaded connection with the second anchor rod segment, the rear end of the second anchor rod segment is used for being connected with one end of the fixing assembly, the other end of the fixing assembly is used for being anchored in hole opening bedrock, and both the grouting assembly and the exhaust assembly are arranged onone side of the prestressed anchor rod. According to the structure and the tensioning method, the stress meter can be prevented from being damaged by torsion, and the axial stress of the prestressedanchor rod during tensioning can be ensured to meet the design requirement.
Description
technical field [0001] The invention relates to the technical field of construction engineering support, in particular to a prestressed monitoring bolt structure and a tensioning method. Background technique [0002] At present, engineering prestressed anchor bolts are mainly tensioned by jack or torque wrench. The jack tensioning process is heavy and complicated, while torque wrench tensioning has the characteristics of fast, light and efficient. Combined with engineering needs, some prestressed anchor bolts It is necessary to install a stress gauge to monitor the stress and deformation of the support object; due to the special structure of the stress gauge, it is easy to be damaged by torsion when the torque wrench is used for tension, so measures should be taken to ensure that no damage occurs when the torque wrench is stretched. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a prestressed monitoring bol...
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IPC IPC(8): E02D5/74E02D33/00
CPCE02D5/74E02D33/00
Inventor 李长青唐茂颖朱家林侯战鹏李培丰蔡鹏
Owner 中国水利水电建设工程咨询北京有限公司