CN2291504Y - 一种增强锚杆 - Google Patents
一种增强锚杆 Download PDFInfo
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- CN2291504Y CN2291504Y CN 97235533 CN97235533U CN2291504Y CN 2291504 Y CN2291504 Y CN 2291504Y CN 97235533 CN97235533 CN 97235533 CN 97235533 U CN97235533 U CN 97235533U CN 2291504 Y CN2291504 Y CN 2291504Y
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- 239000000463 material Substances 0.000 claims description 7
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- 238000000034 method Methods 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 238000005275 alloying Methods 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
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- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000005065 mining Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
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- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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Abstract
一种增强锚杆,用于地下工程围岩支护,尤其适用于围岩松软或受采动影响的地下工程支护。杆体直接采用螺纹钢筋,用锚尾进行局部淬火或淬火回火的锚杆杆体,或用整体进行淬火锚尾低温回火或不回火,其它部分高温回火的杆体,锚尾的硬度高于杆体的其它部位。锚杆的承载力高,塑性好,价格便宜,效果好,具有广泛的实用性。
Description
本实用新型涉及一种用于地下工程围岩支护的锚杆,尤其适用于围岩松软或受采动影响的地下工程支护。
目前地下工程的围岩支护,大都采用圆形普通碳索结构钢制成的锚尾加工成公制螺纹,锚固端加工成左旋麻花柄花柄的锚杆杆体。这种锚杆承载力低,塑性差,在拉应力作用下,锚尾公制螺纹产生塑性变形,最终导致锚尾公制螺纹根部断裂,仅适用于围岩较硬、地压较小的条件。
本实用新型的目的是提供一种锚尾公制螺纹部分的承载力高于杆体,锚杆承载力高,塑性好,价格便宜的增强锚杆。
本实用新型一种增强锚杆,主要由杆体、托盘、螺帽组成,杆体与经过热处理的锚尾由同一规格、同一材质,锚尾的端部加工有公制螺纹,杆体直接采用螺纹钢筋,最佳材质选取含碳量为0.08~0.52%,合金元素总量小于5%。
本实用新型一种增强锚杆,最适合于地下工程的围岩支护,采用螺纹钢筋杆体,对锚杆进行不同的热处理加工,使锚尾的硬度高于杆体其它部位,锚杆的承载力高、塑性好、价格便宜,结构简单,锚固长度不限,效果好,具有广泛的实用性。
附图说明:
附图是本实用新型增强锚杆结构图。
下面结合附图对本实用新型的实施例作进一步说明:
本实用新型一种增强锚杆,它由杆体4,托盘3、螺母2组成,杆体4与经过热处理的锚尾同一规格,同一材质,锚尾1加工有公制螺纹。杆体4通过锚固剂5锚固在锚孔6中,锚杆杆体4直接采用螺纹钢筋,根据不同情况的需要,用不同的热处理工艺,选择不同的材质,最佳材质选取含碳量为0.08~0.52%,合金元素Mn、Si、Cr、Ti、V、Mo、Nb、Re、N等总量小于5%。锚杆可采用普通碳素结构钢,优质碳素结构钢,普通低合金结构钢,优质合金结构钢。在螺纹钢筋锚尾1加工公制螺纹,锚固端不加工,在锚尾1公制螺纹部分的淬火或淬火回火热处理使之承载力高于杆体;或是对锚杆整体淬火回火热处理或控制冷却热处理,通过锚尾螺纹部分的低温回火或不回火或加大螺纹公称直径使之承载力高于杆体。具体做法有:用45MnV螺纹钢筋制成的锚杆;用45MnV、25MnSi螺纹钢筋制成的锚杆;用φ20,20MnSi螺纹钢筋制成的锚杆,锚杆加工成M22或M24螺纹,锚杆整体淬火回火或控制冷却热处理。
Claims (2)
1.一种增强锚杆,主要由杆体(4),托盘(3),螺帽(2)组成,杆体(4)与经过热处理的锚尾(1)同一规格,同一材质,锚尾(1)的端部加工有公制螺纹,其特征在于:杆体(4)直接采用螺纹钢筋。
2.根据权利要求1所述的增强锚杆,其特征在于:所采用的螺纹钢筋,最佳材质选取含碳量为0.08~0.52%,合金元素总量小于5%。
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CN 97235533 CN2291504Y (zh) | 1997-03-20 | 1997-03-20 | 一种增强锚杆 |
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CN 97235533 CN2291504Y (zh) | 1997-03-20 | 1997-03-20 | 一种增强锚杆 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101450440A (zh) * | 2008-12-19 | 2009-06-10 | 上海诺玛液压系统有限公司 | 阀芯与阀芯垫块压配加工方法 |
CN100554706C (zh) * | 2004-11-26 | 2009-10-28 | 专利应用技术公司 | 把锚杆附加在钻孔里的方法 |
CN105155567A (zh) * | 2015-07-29 | 2015-12-16 | 福建荣盛钢结构实业有限公司 | 一种新型地脚锚栓及其成型工艺 |
CN107288663A (zh) * | 2017-08-11 | 2017-10-24 | 中建山东投资有限公司 | 一种隧道拱架精确定位及固定的施工方法及装置 |
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1997
- 1997-03-20 CN CN 97235533 patent/CN2291504Y/zh not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100554706C (zh) * | 2004-11-26 | 2009-10-28 | 专利应用技术公司 | 把锚杆附加在钻孔里的方法 |
CN101450440A (zh) * | 2008-12-19 | 2009-06-10 | 上海诺玛液压系统有限公司 | 阀芯与阀芯垫块压配加工方法 |
CN101450440B (zh) * | 2008-12-19 | 2013-10-09 | 上海诺玛液压系统有限公司 | 阀芯与阀芯垫块压配加工方法 |
CN105155567A (zh) * | 2015-07-29 | 2015-12-16 | 福建荣盛钢结构实业有限公司 | 一种新型地脚锚栓及其成型工艺 |
CN107574819A (zh) * | 2015-07-29 | 2018-01-12 | 福建荣盛钢结构实业有限公司 | 一种高强度大直径预应力地脚锚栓及其制作施工方法 |
CN107574819B (zh) * | 2015-07-29 | 2019-10-15 | 福建荣盛钢结构实业有限公司 | 一种高强度大直径预应力地脚锚栓及其制作施工方法 |
CN107288663A (zh) * | 2017-08-11 | 2017-10-24 | 中建山东投资有限公司 | 一种隧道拱架精确定位及固定的施工方法及装置 |
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