CN103981909A - Rapid repair method and structure for broken foundation bolt - Google Patents
Rapid repair method and structure for broken foundation bolt Download PDFInfo
- Publication number
- CN103981909A CN103981909A CN201410250191.7A CN201410250191A CN103981909A CN 103981909 A CN103981909 A CN 103981909A CN 201410250191 A CN201410250191 A CN 201410250191A CN 103981909 A CN103981909 A CN 103981909A
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- stone bolt
- fixed cover
- bolt
- welding
- foundation slab
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 46
- 239000004575 stone Substances 0.000 claims description 85
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 3
- 238000005498 polishing Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
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Abstract
The invention relates to the field of equipment maintenance and in particular relates to a rapid repair method and structure for a broken foundation bolt. The invention provides a method for rapidly repairing the broken foundation bolt without completely detaching an original concrete foundation. The method comprises the following steps: A, chiseling concrete at the periphery of a pedestal for holding the broken foundation bolt so as to take out of the pedestal, and chiseling concrete around the broken foundation bolt; B, cutting the breakage part of the broken foundation bolt, polishing the end face of the foundation bolt to be flat, and beveling; C, adjusting the coaxiality between a connecting screw rod and the original foundation bolt, and coaxially welding the connecting screw rod and the original foundation bolt; D, sleeving the connecting screw rod and the foundation bolt with a fixing cover, and welding along a vertical welding groove, so that the fixing cover, the connecting screw rod and the foundation bolt are welded together; E, pouring concrete again, and flattening the base surface of the broken foundation bolt; and F, mounting the pedestal in place after the poured concrete is solidified, and refilling a secondary grouting layer.
Description
Technical field
The present invention relates to maintenance of equipment field, the post-rift fast repairing method of especially a kind of stone bolt and structure.
Background technology
Stone bolt is the fixing vitals of equipment, after using for a long time, and the easy fatigue fracture of stone bolt.
After stone bolt fracture, main employing removed former concrete foundation, stone bolt integral replacing, again poured into a mould basic way.
The shortcoming of existing recovery scenario is: 1, remove former concrete foundation, engineering quantity is large.2, stone bolt integral replacing, need make stone bolt again, and the cycle is long.3, cast is basic again, and health, then second pouring, need expend the long period.Stone bolt is all generally at equipment running process Fracture, as long-time shutdown can affect production, causes economic loss to producer.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of post-rift fast repairing method of stone bolt that needn't remove former concrete foundation completely.
The present invention solves the post-rift fast repairing method of stone bolt that its technical problem adopts, and comprises the following steps:
Before C step, complete following preparation: select the screw connection with stone bolt formed objects; Make fixed cover, and on the wall of fixed cover, offer vertically welding vertical slot;
A, the stand surrounding of closing at fracture stone bolt handle are chiseled concrete, to take out stand; Then chisel fracture stone bolt concrete around;
B, the breaking portion of fracture stone bolt is cut off, and the end face of stone bolt is polished flat, bevel;
C, adjust after the axiality of screw connection and former stone bolt both coaxial welding;
D, fixed cover is enclosed within on screw connection and stone bolt, then, along the welding of welding vertical slot, fixed cover, screw connection and stone bolt three is welded to each other;
E, fluid concrete again, the base surface at floating fracture stone bolt place;
After F, concrete to be cast are solid by installation in place stand, then backfill secondary grout layer.
Further, on described fixed cover, offer at least two welding vertical slots, and welding vertical slot being circumferentially uniformly distributed along fixed cover.
Further, in preparation, also make foundation slab, on described foundation slab, be provided with fixing trepanning and anchor (bolt) hole; In D step, welding after fixed cover, the fixed cover hole of foundation slab is welded and located on fixed cover, anchor (bolt) hole cover is set on intact stone bolt.
Further, on described foundation slab, be also provided with plug hole.
Further, be also provided with reinforcing rib on described foundation slab, described reinforcing rib is welded on fixed cover around.
In addition, another technical problem that will solve of the present invention is to remove the post-rift quick repair structure of stone bolt of former concrete foundation completely.
The present invention also provides a kind of stone bolt post-rift quick repair structure, comprise the stone bolt remnants of defeated troops, also comprise screw connection, fixed cover and pouring layer, described connecting screw rod has identical size with the stone bolt remnants of defeated troops, offers vertically welding vertical slot on the wall of described fixed cover; Described screw connection and stone bolt remnants of defeated troops coaxial welding; Described fixed cover is enclosed within on screw connection and stone bolt, and welds vertical slot welding by edge three is interfixed; Described pouring layer covers described fixed cover.
Further, on described fixed cover, offer at least two welding vertical slots, and welding vertical slot being circumferentially uniformly distributed along fixed cover.
Further, also comprise foundation slab and intact stone bolt, be provided with fixing trepanning and anchor (bolt) hole on described foundation slab, the fixed cover hole of foundation slab is welded and located on fixed cover, and anchor (bolt) hole is set on intact stone bolt.
Further, on described foundation slab, be also provided with plug hole.
Further, be also provided with reinforcing rib on described foundation slab, described reinforcing rib is welded on fixed cover around.
The invention has the beneficial effects as follows: the present invention has utilized the basis of original fracture stone bolt; and repair original stone bolt by screw connection and fixed cover; so only need to remove part and the part concrete foundation of stone bolt fracture; therefore shortened downtime; can save a large amount of human and material resources, reduce the economic loss of producer.The structure of screw connection and fixed cover can provide enough intensity, makes the intensity of the new stone bolt of repairing be not less than original stone bolt.All right sheathed foundation slab on fixed cover is simultaneously more firm in the time of cast like this.On foundation slab, reinforcing rib can also be set, can utilize like this reinforcing rib that original intact stone bolt and the new stone bolt of repairing are reinforced, improve the force intensity that is subject to of each bolt.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the schematic diagram of screw connection;
Fig. 4 is the schematic diagram of fixed cover;
Fig. 5 is the A-A line sectional view of Fig. 4;
Fig. 6 is the schematic diagram of foundation slab;
Component, position and numbering in figure: screw connection 1, fixed cover 2, the stone bolt remnants of defeated troops 3, foundation slab 4, reinforcing rib 5, welding vertical slot 6.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Structure of the present invention as shown in Figure 1, comprises the stone bolt remnants of defeated troops 3 and screw connection 1, fixed cover 2 and pouring layer, and described connecting screw rod has identical size with the stone bolt remnants of defeated troops 3, offers vertically welding vertical slot 6 on the wall of described fixed cover 2; Described screw connection 1 and the stone bolt remnants of defeated troops 3 coaxial welding; Described fixed cover 2 is enclosed within on screw connection 1 and stone bolt, and welds vertical slot 6 weldings by edge three is interfixed; Described pouring layer covers described fixed cover 2.Stone bolt is because it is installed, and its fracture substantially all occurs in base surface place, and its part that is embedded in below base surface is all intact, and the present invention utilizes this feature to avoid integral replacing bolt just.Connecting screw rod 1 of the present invention and fixed cover 2 all can be made in advance, repair with for subsequent use.Connecting screw rod 1 and common screw rod unsubstantial difference, specifically can be as shown in Figure 3, and screw connection 1 need be selected according to the size of the foot bolt remnants of defeated troops 3, and its length also needs to reach the function length of original stone bolt simultaneously, with practical function.Fixed cover 2 has welding vertical slot 6, and it is set to the stone bolt remnants of defeated troops 3 and screw connection 1 at cover and can utilizes welding vertical slot 6 to carry out welding.Fixed cover 2 can strengthen the intensity of the stone bolt remnants of defeated troops 3 and screw connection 1, thereby makes the new stone bolt of repairing can reach the integrally intensity of foot bolt.The structure of fixed cover 2 can be referring to shown in Fig. 4 and Fig. 5, and welding vertical slot 6 magnitude setting according to specific circumstances on fixed cover 2 is provided with three welding vertical slots 6 in Fig. 4, and welding vertical slot 6 runs through the wall of fixed cover 2.
In order to increase the fixing intensity of cast, as shown in figs. 1 and 6, also comprise foundation slab 4 and intact stone bolt, on described foundation slab 4, be provided with fixing trepanning and anchor (bolt) hole, the fixed cover hole of foundation slab 4 is welded and located on fixed cover 2, and anchor (bolt) hole is set on intact stone bolt.Foundation slab 4 couples together each stone bolt, thereby forms more reliable and more stable structure, after cast, can increase overall intensity; On foundation slab 4, be also provided with plug hole, can make concrete enter into plug hole, be connected tightr with foundation slab 4.
In order to increase the intensity of fixed cover 2, as shown in Figure 1, on described foundation slab 4, be also provided with reinforcing rib 5, described reinforcing rib 5 is welded on fixed cover 2 around.
Said structure can adopt following methods to implement:
1. stone bolt is hung to concrete foundation the stand closing;
2. along stand surrounding, concrete is chiseled, after the degree of depth guarantees to put into foundation slab and ensures round steel or reinforcing bar welding, its upper surface is not higher than surface of base.Chisel fracture stone bolt concrete around, the degree of depth that the hole degree of depth can be welded to fixed cover 2 lower ends.Chisel size can put into fixed cover 2 and according to general welding rod length can inclined weld to the lower surface of fixed cover 2, as shown in Figure 1;
3. the disconnected foot bolt that falls on the ground is cut off at distance suitable distance place, basic top, bolt end face is polished flat, bevel is used as weld seam;
4. make and break falling on the ground the onesize screw connection of foot bolt, material is identical with stone bolt, as shown in Figure 3.Screw connection length, guarantees a tight stand, and welding end is changed into oblique angle is used as weld seam.
5. make fixed cover 2, in order to ensure newly to do the axiality of screw connection and former stone bolt, the diameter of the former foundation bolt of aperture ratio of fixed cover 2 is slightly large, and interior hole depth is got 5 times of left and right of screw diameter; Symmetry is opened 3 welding vertical slots vertically, and its length is slightly less than hole depth, and pore wall thickness and vertical slot width are as shown in Figure 5.In order to ensure welding performance, fixed cover is selected material identical with stone bolt.Screw thread in the screw connection of processing is wrapped with thin sheet asbestos, in order to avoid electric welding hurts screw thread.
6. clean and repair around stone bolt, weld after adjusting the axiality of screw connection and former stone bolt.In order to ensure that fixed cover 2 can pass through weld seam, finishing weld seam makes outside diameter be equal to or less than the diameter of bolt.
7. fixed cover 2 is enclosed within on screw connection 1 and stone bolt by position shown in Fig. 1, ensures that fixed cover 2 upper surfaces are to base surface size.First in two ends welding, then along three welding vertical slots welding of screw rod.
8. make foundation slab as shown in Figure 6.On foundation slab, make hole for the ease of grouting.Concrete foundation face is polished flat, foundation slab 4 is enclosed within on four stone bolt of stand, and the hole that fixed cover 2 matches must be enclosed within on fixed cover 2.Fixed cover 2 together with foundation slab 4 upper end full welds.Fixed cover 2 outsides, its excess-three stone bolt are welded on steel plate after being welded and fixed with four staggered screw-thread steels or round steel shown in Fig. 1 again, to do reinforcing rib.
9. fluid concrete again, floating base surface.After solid, stand is in place, bolt is aligned to fastening nut;
10. backfill secondary grout layer, after maintenance, machine can put into operation.
Claims (10)
1. the post-rift fast repairing method of stone bolt, is characterized in that: comprise the following steps:
Before C step, complete following preparation: select the screw connection (1) with stone bolt formed objects; Make fixed cover (2), and on the wall of fixed cover (2), offer vertically welding vertical slot (6);
A, the stand surrounding of closing at fracture stone bolt handle are chiseled concrete, to take out stand; Then chisel fracture stone bolt concrete around;
B, the breaking portion of fracture stone bolt is cut off, and the end face of stone bolt is polished flat, bevel;
C, adjust after the axiality of screw connection (1) and former stone bolt both coaxial welding;
D, fixed cover (2) is enclosed within on screw connection (1) and stone bolt, then, along the welding of welding vertical slot (6), fixed cover (2), screw connection (1) and stone bolt three is welded to each other;
E, fluid concrete again, the base surface at floating fracture stone bolt place;
After F, concrete to be cast are solid by installation in place stand, then backfill secondary grout layer.
2. the post-rift fast repairing method of stone bolt as claimed in claim 1, it is characterized in that: on described fixed cover (2), offer at least two welding vertical slots (6), and welding vertical slot (6) being circumferentially uniformly distributed along fixed cover (2).
3. the post-rift fast repairing method of stone bolt as claimed in claim 1, is characterized in that: in preparation, also make foundation slab (4), be provided with fixing trepanning and anchor (bolt) hole on described foundation slab (4); In D step, welding after fixed cover (2), the fixed cover hole of foundation slab (4) is welded and located in to fixed cover (2) upper, anchor (bolt) hole cover is set on intact stone bolt.
4. the post-rift fast repairing method of stone bolt as claimed in claim 3, is characterized in that: described foundation slab is also provided with plug hole on (4).
5. the post-rift fast repairing method of stone bolt as claimed in claim 3, it is characterized in that: on described foundation slab (4), be also provided with reinforcing rib (5), described reinforcing rib (5) is welded on fixed cover (2) around.
6. the post-rift quick repair structure of stone bolt, comprise the stone bolt remnants of defeated troops (3), it is characterized in that: also comprise screw connection (1), fixed cover (2) and pouring layer, described connecting screw rod has identical size with the stone bolt remnants of defeated troops (3), offers vertically welding vertical slot (6) on the wall of described fixed cover (2); Described screw connection (1) and the stone bolt remnants of defeated troops (3) coaxial welding; Described fixed cover (2) is enclosed within on screw connection (1) and stone bolt, and welds vertical slot (6) welding by edge three is interfixed; Described pouring layer covers described fixed cover (2).
7. the post-rift quick repair structure of stone bolt as claimed in claim 6, it is characterized in that: on described fixed cover (2), offer at least two welding vertical slots (6), and welding vertical slot (6) being circumferentially uniformly distributed along fixed cover (2).
8. the post-rift quick repair structure of stone bolt as claimed in claim 6, it is characterized in that: also comprise foundation slab (4) and intact stone bolt, on described foundation slab (4), be provided with fixing trepanning and anchor (bolt) hole, it is upper that the fixed cover hole of foundation slab (4) is welded and located in fixed cover (2), and anchor (bolt) hole is set on intact stone bolt.
9. the post-rift quick repair structure of stone bolt as claimed in claim 8, is characterized in that: described foundation slab is also provided with plug hole on (4).
10. the post-rift quick repair structure of stone bolt as claimed in claim 8, it is characterized in that: on described foundation slab (4), be also provided with reinforcing rib (5), described reinforcing rib (5) is welded on fixed cover (2) around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410250191.7A CN103981909B (en) | 2014-06-06 | 2014-06-06 | Fast repairing method after crack on anchor bolt and structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410250191.7A CN103981909B (en) | 2014-06-06 | 2014-06-06 | Fast repairing method after crack on anchor bolt and structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103981909A true CN103981909A (en) | 2014-08-13 |
| CN103981909B CN103981909B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410250191.7A Active CN103981909B (en) | 2014-06-06 | 2014-06-06 | Fast repairing method after crack on anchor bolt and structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103981909B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457525A (en) * | 2017-08-15 | 2017-12-12 | 攀钢集团西昌钢钒有限公司 | A kind of embedded part bolt prosthetic device and restorative procedure |
| CN109797774A (en) * | 2019-03-25 | 2019-05-24 | 中国二十二冶集团有限公司 | The processing method of equipment basic pre-buried bolt thread curtailment |
| CN111622350A (en) * | 2020-06-10 | 2020-09-04 | 五冶集团上海有限公司 | Technological steel structure foundation bolt mounting and positioning device and mounting method |
| CN111644804A (en) * | 2020-06-30 | 2020-09-11 | 中国华电科工集团有限公司 | Method for repairing broken foundation bolt of ship unloader base |
| WO2022247960A1 (en) * | 2021-09-16 | 2022-12-01 | 中广核工程有限公司 | Threaded member manufacturing method and thread machining device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5163775A (en) * | 1990-10-29 | 1992-11-17 | Rowan Jr Robert L | Anchor bolt repair coupling |
| CN101776196A (en) * | 2007-08-16 | 2010-07-14 | 中冶宝钢技术服务有限公司 | Large damaged foundation bolt butt joint method |
| CN203176644U (en) * | 2013-04-02 | 2013-09-04 | 中国十七冶集团有限公司 | Heightening device of foundation bolt elevation difference |
| JP2014055420A (en) * | 2012-09-11 | 2014-03-27 | Asahi Kasei Geotech Co Ltd | Repair method of corroded anchor bolt fixation base |
-
2014
- 2014-06-06 CN CN201410250191.7A patent/CN103981909B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5163775A (en) * | 1990-10-29 | 1992-11-17 | Rowan Jr Robert L | Anchor bolt repair coupling |
| CN101776196A (en) * | 2007-08-16 | 2010-07-14 | 中冶宝钢技术服务有限公司 | Large damaged foundation bolt butt joint method |
| JP2014055420A (en) * | 2012-09-11 | 2014-03-27 | Asahi Kasei Geotech Co Ltd | Repair method of corroded anchor bolt fixation base |
| CN203176644U (en) * | 2013-04-02 | 2013-09-04 | 中国十七冶集团有限公司 | Heightening device of foundation bolt elevation difference |
Non-Patent Citations (1)
| Title |
|---|
| 周菊华等: "《转机地脚螺栓损坏的快速修复》", 《维修与改造》, 3 September 2007 (2007-09-03) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457525A (en) * | 2017-08-15 | 2017-12-12 | 攀钢集团西昌钢钒有限公司 | A kind of embedded part bolt prosthetic device and restorative procedure |
| CN107457525B (en) * | 2017-08-15 | 2019-07-02 | 攀钢集团西昌钢钒有限公司 | A kind of bolt repairing device and repairing method for embedded parts |
| CN109797774A (en) * | 2019-03-25 | 2019-05-24 | 中国二十二冶集团有限公司 | The processing method of equipment basic pre-buried bolt thread curtailment |
| CN111622350A (en) * | 2020-06-10 | 2020-09-04 | 五冶集团上海有限公司 | Technological steel structure foundation bolt mounting and positioning device and mounting method |
| CN111644804A (en) * | 2020-06-30 | 2020-09-11 | 中国华电科工集团有限公司 | Method for repairing broken foundation bolt of ship unloader base |
| CN111644804B (en) * | 2020-06-30 | 2021-11-09 | 中国华电科工集团有限公司 | Method for repairing broken foundation bolt of ship unloader base |
| WO2022247960A1 (en) * | 2021-09-16 | 2022-12-01 | 中广核工程有限公司 | Threaded member manufacturing method and thread machining device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103981909B (en) | 2016-01-27 |
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