Prestressed anti-corrosion durable device
A technology of prestressed and prestressed steel strands, applied in protection devices, sheet pile walls, buildings, etc., can solve problems such as reduction of construction links, corrosion of anchor rods, etc., and achieve the effect of improving sealing performance
Pending Publication Date: 2021-09-03
樊骥波
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Problems solved by technology
[0003] The Chinese invention patent with the publication number CN104805837B discloses a pipe joint grouting composite bolt body. After the first support of the pipe joint grouting composite bolt body, the later secondary rock and soil grouting reinforcement doubles as a grouting pipe or Grouting pipe anchors do not need to drill new grouting holes, process and install new grouting pipes or grouting pipe anchors, so as to achieve the purpose of reducing construction links, simple process, and reduced workload. The rod body is corrosive, so it is easy to cause corrosion to the lower end of the anchor rod after a long time
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Embodiment 2
[0114] Such as figure 1 As shown, this embodiment discloses a prestressed anti-corrosion and durable device. In addition to the above technical features, this embodiment also includes:
[0115] Anti-pull part 20, used to improve the pull-out force of grouting body 5;
[0116] The pullout member 20 includes a first spiral rib 201 and a second spiral rib 202, both of which are arranged around the outer sleeve 7. After pouring, the first spiral rib 201 is located in the first grouting body 51 , the second spiral rib 202 is located on the upper side of the second grouting body 52 .
[0117] After setting the first spiral rib 201 and the second spiral rib 202, not only the connection strength between the prestressed steel strands 1 can be improved, but also the overall strength of the first grouting body 51 and the second grouting body 52 can be improved , and then achieve the purpose of improving the pullout strength of the whole device.
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The invention belongs to the technical field of geotechnical engineering, and particularly relates to a prestressed anti-corrosion durable device. The prestressed anti-corrosion durable device comprises a prestressed steel strand, an outer sleeve, a grouting pipe, a positioning bracket, a fixing device, a grouting body and a guiding device, wherein the outer sleeve wraps the prestressed steel strand; the grouting pipe is located in the middle of the prestressed steel strand; the fixing device is provided with a first fixing piece and a second fixing piece, the first fixing piece is used for tensioning and locking the upper end of the prestressed steel strand, the second fixing piece is used for tensioning and locking the lower end of the prestressed steel strand, and the second fixing piece is provided with a bearing body for improving the bearing strength; the grouting body is used for grouting into an anchor rod drill hole through the grouting pipe, and the inner side and the outer side of the prestressed steel strand are poured into an integrated cylindrical column body; and the guiding device is used for protecting the second fixing piece and guiding when the second fixing piece is embedded into the anchor rod drill hole. According to the prestressed anti-corrosion durable device, the guiding device can facilitate the prestressed steel strand and the grouting pipe to be quickly inserted into the ground, and the second fixing piece can be protected so as to be prevented from being corroded.
Description
technical field [0001] The invention belongs to the technical field of geotechnical engineering, in particular to a prestressed anti-corrosion and durable device. Background technique [0002] Anchor is a commonly used structure in geotechnical engineering. It is a tension member and its system anchored in the formation, which is used to transfer the load of the external structure to the formation to keep the external structure stable. [0003] The Chinese invention patent with the publication number CN104805837B discloses a pipe joint grouting composite bolt body. After the first support of the pipe joint grouting composite bolt body, the later secondary rock and soil grouting reinforcement doubles as a grouting pipe or Grouting pipe anchors do not need to drill new grouting holes, process and install new grouting pipes or grouting pipe anchors, so as to achieve the purpose of reducing construction links, simple process, and reduced workload. The rod body is corrosive, so ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E02D31/00E02D31/12E02D31/06E02D5/74
CPCE02D31/00E02D31/12E02D31/06E02D5/74
Inventor 樊骥波
Owner 樊骥波