CN106065624B - Suitable for passing through the permanent seal cooling prestress anchorage cable and its construction method of broken rock - Google Patents
Suitable for passing through the permanent seal cooling prestress anchorage cable and its construction method of broken rock Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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Abstract
The permanent seal cooling prestress anchorage cable that the invention discloses a kind of suitable for passing through broken rock, including the anchor cable main body being made of three pairs of steel strand wires, the anchor cable main body is divided into anchoring section and free segment, the smooth soap-free emulsion polymeization of the free segment overall length and it is coated with slip casting casing, the anchoring section is divided into 4 sections, L1, L2, L3 sections are pressure dissipation anchoring unit, wherein, three pairs of steel strand wires of L1 section are soap-free emulsion polymeization, L2 sections have a pair of of steel strand wires to have bonding, L3 sections have two pairs of steel strand wires to have bonding, and L4 is to concentrate pulling force anchoring unit, and three pairs of steel strand wires are to have bonding.The present invention has the function of multiple-anticorrosion, anchor rope grouting project amount, enhancing anchorage engineering quality can be saved while not reducing the advantages that anchor cable corrosion resistance requires, with pressure dispersing type anchoring property, and once supporting body fails, anchoring section can be converted to pulling force dispersing type again, the engineerings such as embankment, execavated rockmass protection and ground anchoring can be used for, provide important technique complementary for broken Rock And Soil anchoring engineering.
Description
Technical field
The invention belongs to geotechnical engineering anchorage technology fields, and in particular to a kind of permanent seal cooling suitable for passing through broken rock
Prestress anchorage cable and its construction method.
Background technique
Currently, being related to a large amount of slope anchorage technical problem in building, traffic, mine and hydraulic engineering construction.It is broken
The unfavorable geologic body of ground is target very intractable on a kind of anchorage technology, as sand ovum soil layer, metalling, miscellaneous fill,
Ancient collapsed accumulation body etc., internal structure is loose and contains a large amount of gaps, and cement slurry is easy to be lost in armature boring, Jin Erying
Ring the quality and durability of anchoring engineering.In the broken Rock And Soil landslide control engineering of some large sizes, prestressed anchor (rope)
Broken Rock And Soil is usually passed through, anchoring section is protruded among the relatively complete rock mass of structure, and anchor pole (rope) grouting process
Often very intractable, number of dropouts of the cement slurry in broken rock-soil layer is very big, and anchoring engineering cost is caused to be several times as much as when serious
Budgetary estimate, and construction quality poor controllability.Therefore, how to allow the anchor bolt grouting of broken Rock And Soil is quality controllable, project amount is controllable
And the technical solution for improving durability is no doubt particularly significant.
Implement anchoring engineering more convenient, so that anchoring engineering had not only been met construction quality and require but also meet durability
It is required that this is the important goal of construction quality and safety management.According to CNKI search result, related kata-rocks soil layer is anchored at present
Special technique of design and construction still extremely limit to, for anchorage technology improvement scheme still up for promoted.
The Chinese patent of Publication No. CN 101148877A proposes a kind of multistage bag-type compression anchor bar, the technology packet
It is knitted containing the anchor rod body that one end is fixedly connected with guide head wherein being set with tubular fabric bag outside the anchoring section of anchor rod body
The diameter of object bag is greater than 5 centimetres~10 centimetres of armature boring diameter；Textile bags lower port positioned at guiding head end directly uses frenulum
It is tightened with anchor rod body binding, textile bags upper port frenulum is tightened with Grouting Pipe and the anchor rod body binding being inserted into it；?
Pass through Grouting Pipe grout injection or cement mortar in textile bags.The technical method can inhibit anchoring section cement mortar liquid stream lose from
And significantly improve anchor rod anchored section of withdrawal resistance.But the technology not can solve free segment when anchor pole passes through broken Rock And Soil
Spillage and endurance issues.
On July 24th, 2006, Wu Dexing propose a kind of " a kind of anticorrosion anchor rod with utricule " (patent of invention notification number:
CN 1888327A), which includes anchor bar body, overall length casing, anchorage head, fastening nut, bearing plate, and anchor bar body is along longitudinal direction
It is coated with utricule, utricule one end is contacted with bearing plate, and the other end is connected with casing.The technology when in use can be in grouting reinforcement
Become double-deck slip casting bonding package, the multiple-anticorrosion barrier with well support system afterwards, new way is provided for permanent support
Through.But the technical problems such as the spillage being likely to occur to the drilling of broken Rock And Soil, do not suggest that reasonable solution.
On January 19th, 2007, Li Ruixiang etc. propose a kind of " slurry pouch grouted anchor bar " (invention patent mandate notification number: CN
201013018Y), which includes anchor pole main reinforcement, and closed flexible slurry pouch is equipped on the outside of main reinforcement, is equipped in bag in main reinforcement
Grouting Pipe, for the setting of Grouting Pipe one end in flexibility slurry pouch, the tail portion of slurry pouch grouted anchor bar is arranged in one end in bag.Flexibility slurry
Pouch is made of the material of flexible plastic film or geomembrane etc.Flexibility slurry pouch is tubular structure, and diameter is greater than bore diameter, long
Degree is less than main reinforcement length.This slurry pouch grouted anchor bar is controlled slip casting shape, is avoided and bored by the flexible slurry pouch of setting
The case where main reinforcement is placed in after the completion of hole easily causes main reinforcement to fall into soil in the process, and cement slurry cannot wrap main reinforcement completely, increases
The contact area between pouch grouted anchor bar and soil is starched, to enhance slurry pouch grouted anchor bar breakout capacity, and also there is knot
The simple production cost of structure is low, is particularly suitable for applying in soft stratum such as mud, muck soil, can improve breakout capacity.
On October 16th, 2007, Cheng Liangkui etc. propose a kind of " multistage bag-type compression anchor bar " (patent of invention bulletin
Number: CN 100575615C).The technology includes the anchor rod body that one end is fixedly connected with guide head, wherein in the anchor of anchor rod body
Gu being set with tubular fabric bag outside section, the diameter of textile bags is greater than 5 centimetres~10 centimetres of armature boring diameter；Positioned at guiding head end
Textile bags lower port directly with frenulum and anchor rod body binding tighten, textile bags upper port frenulum and be inserted into its in slip casting
Pipe and anchor rod body binding tighten；Pass through Grouting Pipe grout injection or cement mortar in textile bags.The technical method can have
Effect improves anchor rod anchored section of withdrawal resistance, but since fabric diameter is bigger, may be left to anchoring section after fabric degradation compared with
More gaps, and then influence the durability and withdrawal resistance of anchoring section.Meanwhile the technology not can solve the spillage of free section with
Corrosion-resistant problem.
2012, Zhu Yijun etc. proposed a kind of etch-proof anchor pole of mortar leakage prevention (ZL201210217055.9), proposed
A kind of mortar leakage prevention anchor pole being applicable to water penetration rock-soil layer, it includes anchor pole reinforcing bar main body, softness and flexible tubular
Pouch, spherical guiding cap, centering bracket, corrugated bushing, backing plate and fastening nut, it is characterised in that the anchor bar steel in merging drilling
Muscle main body longitudinal direction overall length is coated with tubular pouch, and after anchor rod anchored section of slip casting, tubular pouch will act on lower body in grouting pressure
Product rapid expanding, and flowed with injecting cement paste and be full of borehole wall；Piece punching corrugated bushing of free section longitudinal sleeve, set
The built-in reinforcing bar main body of the pouch containing tubular of pipe, after bolt grouting, in corrugated bushing by dense packing effect cement slurry.The technology is main
Anchor structure towards middle lower-prestressed and based on single steel bar, for the mortar leakage prevention anti-corrosion of high pre-stress and more Cable Structures
The anchorage technology of erosion is not directed to.
The Chinese patent of Publication No. CN 103276733A proposes a kind of tension and compression dispersion-type prestressed anchorage cable, it includes
One end is fixed on two or two or more drag-lines in anchor hole, is arranged respectively on every drag-line and is fixed with corresponding interior anchor
Gu supporting body, the inner anchoring carrying body outer end is with pressure-bearing surface and in the axial direction there is one only to be worn for corresponding drag-line
The drag-line perforation crossed, each inner anchoring carrying body are at anchor hole different depth, the portion of the protruding inner anchoring carrying body of drag-line
It is divided into soap-free emulsion polymeization section, inside stretching inner anchoring carrying body is partially stripped to there is adhesive section.The technology mainly solves supporting body
Locate injecting cement paste and fill uncompacted problem, the spillage of free segment and endurance issues are not when being crushed Rock And Soil as anchor cable
It is related to.Meanwhile the technology supporting body it is effective when anchoring section be pressure dispersion structure, and supporting body just in case failure, anchoring engineering
Quality and durability will receive larger impact.
Prestress anchorage cable is wanted as a kind of important geotechnical engineering anchorage technology means for the technology of permanent anchor cable
It asks, service life is even longer in 50 ~ 100 years.The cement slurry bond stress of anchor cable, protective layer thickness have the durability of anchor cable
Important influence, seriously and then influence anchor cable withdrawal resistance for spillage in broken rock-soil layer and the problems such as durability, propose
A kind of permanent seal cooling prestress anchorage cable and construction method suitable for passing through broken rock has important engineering significance and practical valence
Value.
Summary of the invention
The present invention provides a kind of permanent seal cooling prestress anchorage cable and its construction method suitable for passing through broken rock, has more
Heavy antisepsis function, anchor rope grouting project amount can be saved, enhance anchorage engineering quality while not reducing the requirement of anchor cable corrosion resistance etc.
Advantage has pressure dispersing type anchoring property, once and supporting body failure, anchoring section can be converted to pulling force dispersing type again.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: being suitable for passing through the durable of broken rock
Type prestress anchorage cable, including the anchor cable main body being made of three pairs of steel strand wires, the anchor cable main body is divided into anchoring section and free segment, institute
It states the smooth soap-free emulsion polymeization of free segment overall length and is coated with slip casting casing, the anchoring section is divided into 4 sections, and L1, L2, L3 sections are pressure dissipation
Anchoring unit, wherein three pairs of steel strand wires of L1 section are soap-free emulsion polymeization, and L2 sections have a pair of of steel strand wires to have bonding, and L3 sections have two pairs of steel to twist
Line has bonding, and L4 is to concentrate pulling force anchoring unit, and three pairs of steel strand wires are to have bonding.
The longitudinal direction of the free segment is the corrugated bushing utricule for filling cement grout, and the corrugated bushing is built-in to be contained
The anchor cable main body of non-bending steel cable, before the anchor cable main body is put into drilling, free segment elder generation slip casting, by shape in the corrugated bushing
At fine and close utricule, steel strand wires can be twitched freely after cement slurry hardening.
The anchor cable main body is fixed with several centering brackets along its length.
The centering bracket is 1-3m along the anchor cable main body length direction spacing.
The anchoring section includes multiple supporting bodies and terminal guide cap, and the supporting body is thickness not less than 2 cm and has
The cylindrical body of circular hole.
The construction method of the above-mentioned permanent seal cooling prestress anchorage cable for being suitable for passing through broken rock, the first step carry out anchor cable
Main body establishment, adhesive section implement peeling, deoil, clean, drying；Second step installs anchoring section guiding cap, supporting body, smoothes out with the fingers along each
Unit anchoring section locks corresponding adhesive section with supporting body；Third step installs free segment corrugated bushing, and the aperture both ends of pipe are adopted
It is closed with soft quality pitch hemp cut, and slip casting is carried out using free segment Grouting Pipe, it is ensured that slip casting is closely knit in casing, while steel being kept to twist
Line freely stretches in free segment；4th step, site operation setting-out determine the position of bolthole；5th step carries out anchor cable brill
Hole；6th step checks that the establishment of anchor cable main body is intact, will make with centering bracket, free segment Grouting Pipe, anchoring section
The anchor cable of Grouting Pipe, guiding cap and free segment corrugated bushing is placed within drilling；7th step carries out the interior once grouting that drills,
It is controlled by grouting amount and grouting pressure dual indexes, checks anchoring section slip casting density, determine the condition for terminating slip casting；8th
Step, pours aperture anchor cable pad pier or ground beam, it is ensured that the free segment corrugated bushing for filling cement slurry gos deep into pad pier or ground beam >=5cm；
9th step, installation anchor cable backing plate, voussoir and anchorage carry out anchor cable aperture tensioning fixation, and sealing off and covering anchorage.
In 7th step, by anchoring section Grouting Pipe and free segment corrugated bushing utricule and woven anchor cable structure body
Drilling hole bottom is protruded into simultaneously, and borehole anchorage section is full of by cement grout using low-pressure grouting.
When slip casting, slurries is allowed to be gradually risen by drilling hole bottom, after filling anchoring section, if there is spillage in free segment, anchoring
Section slip casting pipe pressure will decline or continue suddenly no longer to increase；Anchoring section verifies grouting amount not less than design borehole anchorage simultaneously
2 times of segment body product.
An important feature of the invention is that the anchoring section of anchor cable is composed of multiple units, and anchoring section has when supporting body is effective
There is pressure dispersion structure, and supporting body contingency failure, anchoring section can form pulling force decentralized architecture；Outside free section of anchor cable steel strand wires
It is nested with corrugated bushing, forms the cement slurry utricule of reliable in quality using hole location pre-pouring grout, the free segment steel strand wires of anchor cable are in slip casting
Afterwards with the free slip characteristic of soap-free emulsion polymeization, the protection feature with multiple-anticorrosion, while capable of effectively passing through broken rock, really
Protect the durability of free segment.By closely knit slip casting in anchoring section drilling, the filling density of grouting cable anchor anchoring section both ensure that
It is required that slime flux everywhere is also avoided when free segment passes through broken ground area under grouting pressure effect, or even splitting Rock And Soil
Adverse effect is conducive to the control of Grouting engineering amount and saves project cost.Free section of anchor cable is protected by corrugated bushing, can be with
It allows free section of anchor cable to pass through aperture and is crushed ground area, ensuring cable body cement slurry protective layer thickness simultaneously, advantageously reducing slip casting
Anchor cable is conducive to save project cost in the broken serious spillage risk in ground region.
The present invention will effectively reduce the uncontrollable technical risk of grouting amount for engineering site anchoring construction, while be water penetration
Broken rock-soil layer provides economic, safe, durable, reliable prestressed anchorage technology scheme.It has the function of multiple-anticorrosion, energy
It saves anchor rope grouting project amount, enhancing anchorage engineering quality, reduce the advantages that anchor cable corrosion resistance requires simultaneously, there is pressure
Distributed anchoring property, once and supporting body fails, it is distributed that anchoring section can be converted to pulling force again, can be used for embankment, excavation side
The engineerings such as slope protection and ground anchoring provide important technique complementary for broken Rock And Soil anchoring engineering, belong to civil construction
Field of engineering technology.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of anchor cable of the present invention.
Fig. 2 is that anchor cable structure slip casting post-stretching of the present invention locks schematic diagram.
Fig. 3 is E-E direction view in Fig. 1.
Fig. 4 is A-A direction view in Fig. 1.
Fig. 5 is B-B direction view in Fig. 1.
Fig. 6 is C-C direction view in Fig. 1.
Fig. 7 is D-D direction view in Fig. 1.
Fig. 8 is anchor rope guiding cap structure chart of the present invention.
Fig. 9 is free section of anchor cable supporting body structure chart of the present invention.
Specific embodiment
As shown in Figures 1 to 7, suitable for passing through the permanent seal cooling prestress anchorage cable of broken rock, including by three pairs of steel strand wires
The anchor cable main body of composition, the anchor cable main body are segmented by function and are made of anchoring section 1 and free segment 2, and combined steel strand wires are structures
The main supporting body of part tension, due to being subject to corrode under the conditions of exposed, steel strand wires generally require the cement slurry for ensuring 2.0cm or more to protect
Sheath；3 be guiding cap；4 be anchoring section steel supporting body, and 5 are anchoring section peeling and have bonding steel strand wires, and 6 be centering bracket.7
Non-bending steel cable for free segment with PVC；8 be free segment corrugated bushing；9 be free segment Grouting Pipe；10 be to protrude into drilling bottom
Anchoring section Grouting Pipe, the 11 cement slurry utricule to fill in free segment corrugated bushing；12 be drilling orifice steel sleeve, and 13 be brill
Hole aperture positioning steel sleeve, which is answered, reserves 50mm ~ 100mm outside hole, 14 should stretch out except the steel sleeve of aperture for free segment corrugated bushing
100mm, 15 be steel strand wires (peeling and have bonding) aperture tensioning section, and 16 be slope surface sash ground beam or pad pier, and 17 is set in pad pier
The reinforced mesh set, 18 be supertronic voussoir, and 19 be sealing off and covering anchorage, and 20 anchor locking piece for aperture, and 21 be drilling.
Merging drilling 21 in the smooth soap-free emulsion polymeization of the free segment overall length and be coated with slip casting casing (i.e. free segment radiation fins
Pipe), the anchoring section is divided into 4 sections, and L1, L2, L3 sections are pressure dissipation anchoring unit, wherein three pairs of steel strand wires of L1 section are nothing
Bonding, L2 sections have a pair of of steel strand wires to have bonding, and L3 sections have two pairs of steel strand wires to have bonding, and L4 is to concentrate pulling force anchoring unit, and three pairs
Steel strand wires are to have bonding.After anchoring section slip casting, anchoring section each unit has dispersed to improve anchoring section to the concentration pulling force of hole wall
Stress distribution.If some supporting body of anchoring section L1, L2, L3 unit fails, the corresponding anchoring section of supporting body failure can be converted
For the tension dispersed anchor cable of multiple units, and L4 sections are still concentrated pulling force anchoring unit for prestressing force.
The longitudinal direction of the free segment is the corrugated bushing utricule for filling cement grout, and the corrugated bushing is built-in to be contained
The anchor cable main body of non-bending steel cable, before the anchor cable main body is put into drilling, free segment elder generation slip casting, by shape in the corrugated bushing
At fine and close utricule, steel strand wires can be twitched freely after cement slurry hardening.The free segment 2 uses before anchor cable is put into drilling
Precast construction, Grouting Pipe in corrugated bushing are withdrawn from after slip casting is closely knit in corrugated bushing, first implement note in corrugated bushing
It starches, conserve and check and accept, slip casting utricule fills closely knit, non-bending steel cable retractable in corrugated bushing in corrugated bushing.
The anchor cable main body is fixed with several centering brackets along its length.The centering bracket is long along the anchor cable main body
Degree direction spacing is 1-3m.
The construction method of the above-mentioned permanent seal cooling prestress anchorage cable for being suitable for passing through broken rock, one kind are suitable for passing through brokenly
The new technique implementation steps of the permanent seal cooling prestress anchorage cable of detritus layer are as follows:
The first step is ready work, carries out the establishment of anchor cable main body, and adhesive section implements peeling, deoils, cleans, drying；
Second step installs anchoring section guiding cap, supporting body, smoothes out with the fingers along each unit anchoring section, corresponding viscous with supporting body locking
Tie section；
Third step installs free segment corrugated bushing, and the aperture both ends of pipe are closed using soft quality pitch hemp cut, and using freely
Section Grouting Pipe carries out slip casting, it is ensured that slip casting is closely knit in corrugated bushing, while steel strand wires being kept freely to stretch in free segment；
4th step, site operation setting-out determine the position of bolthole；
5th step, carries out anchor cable drilling, and bore diameter is typically no less than 130mm；
6th step checks that the establishment of anchor cable main body is intact, will make with centering bracket, free segment Grouting Pipe,
The anchor cable of anchoring section Grouting Pipe, guiding cap and free segment corrugated bushing is placed within drilling；
7th step carries out the interior once grouting that drills, and requires anchor rod anchored section of slip casting closely knit, passes through grouting amount and slip casting pressure
The control of power dual indexes, checks anchoring section slip casting density, determines the condition for terminating slip casting；
8th step pours aperture anchor cable pad pier or ground beam, it is ensured that the corrugated bushing that free section of anchor cable fills cement slurry gos deep into
Pad pier or ground beam >=5cm；
9th step, installation anchor cable backing plate, voussoir and anchorage carry out anchor cable aperture tensioning fixation, and sealing off and covering anchorage.
In 7th step, by anchoring section Grouting Pipe and free segment corrugated bushing utricule and woven anchor cable structure body
Drilling hole bottom is protruded into simultaneously, and borehole anchorage section is full of by cement grout using low-pressure grouting.It can not outside free segment corrugated bushing
Slip casting.
Anchoring section grouting quality is controlled using dual indexes, i.e. slip casting hydraulic pressure value and design grouting amount is all satisfied requirement.Note
Hole-bottom slurry-injection pipe does not allow to twitch in principle when slurry, and slurries is allowed to be gradually risen by bottom hole, after filling anchoring section, if free segment goes out
Existing spillage, anchoring section slip casting pipe pressure will decline or continue suddenly no longer to increase；The grouting amount of anchoring section verification simultaneously should not be small
In 2 times of design borehole anchorage segment body product.
The anchoring section is made of multiple supporting bodies and terminal guide cap (as shown in Figure 8), and anchoring section Grouting Pipe should be with anchor
Rope anchoring section is placed in drilling hole bottom jointly.
As shown in figure 9, free section of anchor cable includes PVC casing, cement utricule and its triple anti-corrosion structures of corrugated bushing.
When free section of anchor cable spillage is serious, free segment corrugated bushing should be allowed to go deep into aperture pad pier for anchor cable aperture or ground beam is not less than 10cm,
It can not slip casting outside free segment corrugated bushing.
The present invention can save anchor rope grouting project amount, enhancing anchorage engineering quality, improve the advantages that anchor pole corrosion resistance, energy
For engineerings such as embankment, execavated rockmass protection and ground prestress anchoragings, Rock And Soil anchoring engineering is crushed for water penetration and is provided
Important technique complementary.
Claims (5)
1. being suitable for passing through the construction method of the permanent seal cooling prestress anchorage cable of broken rock, it is characterised in that:
It is described to be suitable for that pass through the permanent seal cooling prestress anchorage cable of broken rock include the anchor cable main body being made of three pairs of steel strand wires, institute
It states anchor cable main body and is divided into anchoring section and free segment, the smooth soap-free emulsion polymeization of the free segment overall length and be coated with corrugated bushing, the anchor
Gu section is divided into 4 sections, L1, L2, L3 sections are pressure dissipation anchoring unit, wherein three pairs of steel strand wires of L1 section are soap-free emulsion polymeization, and L2 sections have
A pair of of steel strand wires have bonding, and L3 sections have two pairs of steel strand wires to have bonding, and L4 is to concentrate pulling force anchoring unit, and three pairs of steel strand wires are to have
Bonding；The longitudinal direction of the free segment is the corrugated bushing utricule for filling cement grout, and the corrugated bushing is built-in to contain nothing
The anchor cable main body for bonding steel strand wires, before the anchor cable main body is put into drilling, the slip casting of free segment elder generation, the corrugated bushing will be interior to be formed
Fine and close prefabricated utricule, Grouting Pipe is withdrawn from after slip casting is closely knit in casing in corrugated bushing, and steel strand wires can after cement slurry hardening
Freely twitch；
The construction method of the permanent seal cooling prestress anchorage cable for being suitable for passing through broken rock, comprising:
The first step, carries out the establishment of anchor cable main body, and adhesive section implements peeling, deoils, cleans, drying；
Second step installs anchoring section guiding cap, supporting body, smoothes out with the fingers along each unit anchoring section, locks corresponding adhesive section with supporting body；
Third step installs free segment corrugated bushing, and the aperture both ends of pipe are closed using soft quality pitch hemp cut, and are infused using free segment
It starches pipe and carries out slip casting, it is ensured that slip casting is closely knit in casing, while steel strand wires being kept freely to stretch in free segment；
4th step, site operation setting-out determine the position of anchor cable hole；
5th step carries out anchor cable drilling；
6th step checks that the establishment of anchor cable main body is intact, will make with centering bracket, anchoring section Grouting Pipe, guiding
The anchor cable of cap and free segment corrugated bushing is placed within drilling；
7th step carries out the interior once grouting that drills, and is controlled by grouting amount and grouting pressure dual indexes, checks anchoring section slip casting
Density determines the condition for terminating slip casting；
8th step pours aperture anchor cable pad pier or ground beam, it is ensured that the free segment corrugated bushing that free section of anchor cable fills cement slurry is deep
Enter pad pier or ground beam >=5cm；
9th step, installation anchor cable backing plate, voussoir and anchorage carry out anchor cable aperture tensioning fixation, and sealing off and covering anchorage.
2. the construction method of the permanent seal cooling prestress anchorage cable according to claim 1 for being suitable for passing through broken rock, special
Sign is: the anchor cable main body is fixed with several centering brackets along its length, and the centering bracket is long along the anchor cable main body
Degree direction spacing is 1-3m.
3. the construction method of the permanent seal cooling prestress anchorage cable according to claim 1 for being suitable for passing through broken rock, special
Sign is: the anchoring section includes multiple supporting bodies and terminal guide cap, and the supporting body is thickness not less than 2cm and with circle
The cylindrical body in hole.
4. the construction method of the permanent seal cooling prestress anchorage cable according to claim 1 for being suitable for passing through broken rock, special
Sign is: in the 7th step, anchoring section Grouting Pipe and free segment corrugated bushing utricule and woven anchor cable main body is same
When protrude into drilling hole bottom, and borehole anchorage section is full of by cement grout using low-pressure grouting.
5. the construction method of the permanent seal cooling prestress anchorage cable according to claim 4 for being suitable for passing through broken rock, special
Sign is: when slip casting, slurries being allowed to be gradually risen by drilling hole bottom, after filling anchoring section, if spillage, anchoring section occurs in free segment
Slip casting pipe pressure will decline or continue suddenly no longer to increase；Anchoring section verifies grouting amount not less than design borehole anchorage section simultaneously
2 times of volume.
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| CN106930283B (en) * | 2017-04-20 | 2020-08-07 | 大连理工大学 | Tension-compression composite anchor cable with flowering end and manufacturing and installation method |
| CN107542086B (en) * | 2017-10-17 | 2023-05-12 | 甘肃中建市政工程勘察设计研究院有限公司 | Anchor cable construction method for filling slope |
| CN107747497A (en) * | 2017-11-30 | 2018-03-02 | 中国科学院武汉岩土力学研究所 | Heat exchange bolt-spary supports system and country rock cool-down method |
| CN108265712B (en) * | 2018-03-13 | 2023-06-20 | 中国电建集团中南勘测设计研究院有限公司 | Underwater ground anchor structure with wear-resistant sleeve |
| CN108560546B (en) * | 2018-03-13 | 2023-11-07 | 中国电建集团中南勘测设计研究院有限公司 | Underwater ground anchor structure |
| CN108360515A (en) * | 2018-04-27 | 2018-08-03 | 中国铁道科学研究院深圳研究设计院 | It is segmented reaming pressure anchor wire structure and construction method |
| CN108677957A (en) * | 2018-06-29 | 2018-10-19 | 北京矿务局综合地质工程公司 | Whole anchoring body segmenting slip casting separator |
| CN111441371B (en) * | 2020-04-13 | 2024-04-26 | 中国地质科学院探矿工艺研究所 | Self-balancing anchor cable structure for preventing and controlling seasonal frozen soil landslide and design method |
| CN113897953A (en) * | 2020-07-06 | 2022-01-07 | 中国电建集团华东勘测设计研究院有限公司 | Prestressed steel bar structure for supporting rock wall crane beam of underground workshop |
| CN113152454A (en) * | 2021-04-07 | 2021-07-23 | 华电云南发电有限公司以礼河发电厂 | Construction method of prestressed anchor cable with bonding of outer sleeve corrugated pipe |
| CN113293780A (en) * | 2021-07-01 | 2021-08-24 | 吉林省长春电力勘测设计院有限公司 | Reinforcing method for broken landslide body |
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| CN102720196A (en) * | 2012-06-26 | 2012-10-10 | 浙江省交通规划设计研究院 | Anticorrosive anchor rod capable of preventing slurry from leaking |
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| CN1122745C (en) * | 1998-06-08 | 2003-10-01 | 中外合资柳州欧维姆建筑机械有限公司 | Pull-pressure dispersed protecting anchor cable and its construction method |
| CN101768963B (en) * | 2008-12-31 | 2012-02-15 | 中铁西北科学研究院有限公司深圳南方分院 | Self-locking device and self-locking type pre-stress anchor wire having the same |
| CN103276733B (en) * | 2013-06-20 | 2015-12-23 | 河南省昊鼎建筑基础工程有限公司 | A kind of tension and compression dispersion-type prestressed anchorage cable |
| CN203429632U (en) * | 2013-08-21 | 2014-02-12 | 中建三局第一建设工程有限责任公司 | Tension force and pressure dispersed type anchor cable |
| KR20160066766A (en) * | 2014-12-03 | 2016-06-13 | (주)대영 | Frictional combined ground anchor |
| CN205954623U (en) * | 2016-07-12 | 2017-02-15 | 浙江省交通工程建设集团有限公司 | Durable type prestressed anchorage cable suitable for pass through broken rock stratum |
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| CN102720196A (en) * | 2012-06-26 | 2012-10-10 | 浙江省交通规划设计研究院 | Anticorrosive anchor rod capable of preventing slurry from leaking |
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