CN106120817A - A kind of domatic building concrete layer landslide-proofing construction technology - Google Patents

A kind of domatic building concrete layer landslide-proofing construction technology Download PDF

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Publication number
CN106120817A
CN106120817A CN201610515989.9A CN201610515989A CN106120817A CN 106120817 A CN106120817 A CN 106120817A CN 201610515989 A CN201610515989 A CN 201610515989A CN 106120817 A CN106120817 A CN 106120817A
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China
Prior art keywords
domatic
anchor
concrete layer
construction technology
anchor hole
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CN201610515989.9A
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Chinese (zh)
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CN106120817B (en
Inventor
王进青
韩新亭
刘志强
方建文
张岳
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Qingdao No 1 Construction Group Co Ltd
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Qingdao No 1 Construction Group Co Ltd
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Priority to CN201610515989.9A priority Critical patent/CN106120817B/en
Publication of CN106120817A publication Critical patent/CN106120817A/en
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Publication of CN106120817B publication Critical patent/CN106120817B/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/76Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/30Miscellaneous comprising anchoring details

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

The invention discloses a kind of domatic building concrete layer landslide-proofing construction technology, a kind of domatic building concrete layer landslide-proofing construction technology, including following construction procedure: (1), rock stratum perforate;(2), anchoring section is set;(3), anchoring section slip casting;(4), anchoring section slip casting is closely knit;(5), pretension section is set;(6), domatic matrix is poured;(7), pretension anchoring;(8), closure.The present invention carries and is prevented from occurred level slip, stable connection between slope body and rock mass basis, constructs simple and convenient.

Description

A kind of domatic building concrete layer landslide-proofing construction technology
Technical field
The present invention relates to technical field of building construction, particularly relate to a kind of domatic building concrete layer landslide-proofing construction work Skill.
Background technology
In recent years, along with the high speed development of Building Trade in China, building construction process relates to increasing side slope work Journey, in deep foundation pit slope work progress, usually uses anchor cable to make ground organically combine with domatic.And the most pre- In stress anchor cable construction, use rig pore-formings to be fixed on by prestress anchorage cable in hole to reach the merit of high slope disease control more Can, and by Shi Hanzhang, side slope body deep layer deformation and failure can be resisted, be affixed on domatic reinforced concrete frame to side slope Surface layer ground plays frame hoop effect, limits top layer ground deformation and failure, carries out vegetative protection, can prevent and treat current in framework Domatic is washed away, the small-sized deforming of the slopes such as domatic ground weathering off, falling rocks can be prevented and treated again, and reach to beautify natural environment Effect, and in work progress, often run into the problem that between slope body and rock mass basis, occurred level slides, impact connects Steadiness.
Summary of the invention
For solving the problems referred to above, the present invention provides one to be prevented from occurred level between slope body and rock mass basis and slides, Stable connection, the most domatic building concrete layer landslide-proofing construction technology of constructing.
The present invention solves the technical scheme of above-mentioned technical problem employing: a kind of domatic building concrete layer landslide-proofing is constructed Technique, including following construction procedure:
(1), rock stratum perforate: offering anchor hole on ground horizon d, anchor hole is domatic vertical with the follow-up domatic matrix poured Arrange;
(2), arranging anchoring section: after anchor hole is offered, put into multiple anchor cable being connected to each other in anchor hole, anchor cable stretches out anchoring Nose end mouth, puts into Grouting Pipe at 50-100mm at the bottom of anchor hole;
(3), anchoring section slip casting: after Grouting Pipe puts into anchor hole, inject concrete in anchor hole by Grouting Pipe and carry out once Slip casting, until concreting is to anchor hole port position;
(4), anchoring section slip casting is closely knit: after once grouting completes, the empty place producing anchor hole inner concrete carries out secondary injection Starch closely knit;
(5), pretension section is set: after secondary grouting completes, the anchor cable of prestressing force rope with anchor hole port is fixed, in anchoring The sleeve pipe allowing the anchor cable stretched out to penetrate is placed in port, hole, and prestressing force rope is through sleeve pipe and extends to outside sleeve pipe, by sleeve pipe Encapsulation process is carried out with anchor hole port;
(6), pouring domatic matrix: after pretension section is provided with, its vicinity is carried out concreting, concreting is to set At the pipe mouth of pipe, making and carry angled domatic matrix, the domatic and sleeve pipe of domatic matrix is vertically arranged;
(7), pretension anchoring: after domatic matrix has poured, placing prestressed slab at the sleeve pipe mouth of pipe, prestressing force rope is through pre- Stress plate, when the coagulation grade of the concrete at domatic matrix is more than 80%, stretch-draw pretightning force rope makes tension force reach 1.1- 1.2N, stretch-draw 2 times, keep 15min every time, be offloaded to lock load, use anchor head will to be in the prestress rope of pretightning force state Rope is fixed on prestressed slab, after anchor head locking, if being found to have the loss of obvious pretightning force when being in lax, should compensate Draw, if find pretightning force increment exceed design axle power 10% time, after should loosening again stretch-draw to turn down prestress value;
(8), closure: after pretension has anchored, exposed sleeve pipe, prestressed slab and anchor head outside concrete is carried out concrete Pour closure, complete construction.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, uses once grouting pipe, once notes during once grouting The slurry pipe mouth of pipe is in 50-100mm position below slurry all the time, and marginal not slurry limit is moved to anchor hole port until detaching anchoring Hole, once grouting completes in 1h, and once grouting pressure is 5Mp.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, uses secondary grouting pipe, secondary injection during secondary grouting Slurry tube wall offers injected hole, and blocks injected hole, and secondary grouting pressure is 0.25Mp.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, is disposed with on anchor cable along anchor cable axis direction Multiple isolating frames for strengthening anchor cable and anchor hole inner concrete bonding strength.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, described isolating frame includes having the annular in connection chamber even Fitting, the most multiple reinforcement extended to anchor hole of described circular connector, formed between adjacent two reinforcements and be used for The isolation area of secondary grouting pipe is set.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, prestressing force rope uses before pouring and eliminates rust, And at its surface brush Colophonium, finally parcel Colophonium glass-fiber-fabric, the parcel number of plies is no less than two layers, and the sleeve pipe two ends interior butter of socket is filled out Filling, depth of cracking closure is 100-200m.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, anchor head, before closure, uses rust cleaning, painting corrosion resistant coating to enter Row is antirust, during closure, increases the bonding strength between domatic matrix reinforcing steel net cover is placed above.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, coaxial identical with anchor hole holding of described anchor cable Degree.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, welds reinforcement outside set tube wall.
Above-mentioned domatic building concrete layer landslide-proofing construction technology, the concrete closure thickness at anchor head is not less than 100mm。
The beneficial effects of the present invention is: on rock mass, offer anchor hole, put into anchor cable in anchor hole, between anchor cable and anchor cable Connect isolating frame, it is ensured that hole and the bonding strength of anchor cable, effectively avoid loosening of connection;Use once grouting pipe and secondary Grouting Pipe is deep at 50-100mm at the bottom of anchor hole, and by once grouting pipe once grouting, secondary grouting pipe secondary pressurized is noted Starch closely knit, make anchoring section more closely knit, without cavitation;Prestressing force rope blocks with anchor cable junction, it is to avoid concrete Enter sleeve pipe, cause the prestressing force rope can not be freely movable in sleeve pipe, tensile stress is impacted;Stretch-draw pretightning force rope Make tension force reach 1.1-1.2N, stretch-draw 2 times, keep 15min every time, increase the bonding strength of rock mass and domatic matrix, it is to avoid produce Raw sliding loosens.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention;
Fig. 2 is the partial structurtes schematic diagram of the present invention;
Fig. 3 is the sectional view of A-A in the present invention;
Fig. 4 is the sectional view of B-B in the present invention;
Fig. 5 is middle sleeve structural representation of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
As shown in Fig. 1,2,3,4,5, a kind of domatic building concrete layer landslide-proofing construction technology, including following construction step Rapid:
(1), rock stratum perforate: offering anchor hole 2 on ground horizon d 1, anchor hole 2 is obliquely installed, and its angle is by domatic matrix 10 Domatic 14 determine, domatic 14 vertical with domatic matrix 10, the anchor hole degree of depth is 2-6m;
(2), arranging anchoring section: after anchor hole 2 is offered, put into multiple anchor cable 3 being connected to each other in anchor hole 2, anchor cable 3 stretches out Anchor hole 2 port, puts into Grouting Pipe at anchor hole 2 end 50-100mm;
(3), anchoring section slip casting: after Grouting Pipe puts into anchor hole 2, inject concrete in anchor hole 2 by Grouting Pipe and carry out one Secondary slip casting, until concreting is to anchor hole 2 port position, uses once grouting pipe 4, once grouting pipe 4 during once grouting The mouth of pipe is in 50-100mm position below slurry all the time, and marginal not slurry limit is moved to anchor hole 2 port until detaching anchor hole 2, Once grouting completes in 1h, and once grouting pressure is 5Mp;
(4), anchoring section slip casting is closely knit: after once grouting completes, the empty place producing anchor hole 2 inner concrete carries out secondary injection Starching closely knit, use secondary grouting pipe 5 during secondary grouting, secondary grouting pipe 5 tube wall is offered injected hole, and is sealed injected hole Stifled, secondary grouting pressure is 0.25Mp;
(5), pretension section is set: after secondary grouting completes, the anchor cable 6 of prestressing force rope 7 with anchor hole 2 port is fixed, in advance Stress rope 7 uses before pouring and eliminates rust, and at its surface brush Colophonium, finally parcel Colophonium glass-fiber-fabric, the parcel number of plies is not Less than two layers, place the sleeve pipe 8 allowing the anchor cable 6 stretched out to penetrate in anchor hole 2 port, in the socket of sleeve pipe 8 two ends, use butter Filling, depth of cracking closure is 100-200mm, welds reinforcement 13 outside sleeve pipe 8 tube wall, and prestressing force rope 7 is through sleeve pipe 8 and extends Outside sleeve pipe 8, sleeve pipe 8 and anchor hole 2 port are carried out encapsulation process, seal and use coarse cloth or sealing rubber ring;
(6), pouring domatic matrix: after pretension section is provided with, to carrying out concreting around sleeve pipe 8, concreting is arrived At sleeve pipe 8 mouth of pipe, making and carry angled domatic matrix 10, domatic the 14 of domatic matrix 10 are vertically arranged with sleeve pipe 8;
(7), pretension anchoring: after domatic matrix 10 has poured, place prestressed slab 9, prestressing force rope 7 at sleeve pipe 8 mouth of pipe Through prestressed slab 9, when the coagulation grade of the concrete at domatic matrix 10 is more than 80%, stretch-draw pretightning force rope 7 makes tension force Reach 1.1-1.2N, stretch-draw 2 times, keep 15min every time, be offloaded to lock load, use anchor head 11 will be in pretightning force state Prestressing force rope 7 be fixed on prestressed slab 9, anchor head 11 locking after, if be found to have obvious pretightning force loss be in lax Time, stretch-draw should be compensated, if find pretightning force increment exceed design axle power 10% time, after should loosening again stretch-draw to turn down Prestress value;
(8), closure: after pretension has anchored, exposed sleeve pipe 8, prestressed slab 9 and anchor head 11 outside concrete is mixed Solidifying soil pours closure, and anchor head 11, before closure, uses rust cleaning, painting corrosion resistant coating to carry out antirust, during closure, bar-mat reinforcement is being placed above Cover increases the bonding strength between domatic matrix 10, and reinforcing steel net cover thickness is not less than 50mm, the concrete closure at anchor head 11 Thickness is not less than 100mm, completes construction.
Although the detailed description of the invention of the present invention is described by above-mentioned combination, but not to scope Limiting, one of ordinary skill in the art should be understood that, on the basis of technical scheme, those skilled in the art need not Pay various amendments or deformation that creative work can make still within protection scope of the present invention.

Claims (10)

1. a domatic building concrete layer landslide-proofing construction technology, it is characterised in that: include following construction procedure:
(1), rock stratum perforate: offering anchor hole on ground horizon d, anchor hole is domatic vertical with the follow-up domatic matrix poured Arrange;
(2), arranging anchoring section: after anchor hole is offered, put into multiple anchor cable being connected to each other in anchor hole, anchor cable stretches out anchoring Nose end mouth, puts into Grouting Pipe at 50-100mm at the bottom of anchor hole;
(3), anchoring section slip casting: after Grouting Pipe puts into anchor hole, inject concrete in anchor hole by Grouting Pipe and carry out once Slip casting, until concreting is to anchor hole port position;
(4), anchoring section slip casting is closely knit: after once grouting completes, the empty place producing anchor hole inner concrete carries out secondary injection Starch closely knit;
(5), pretension section is set: after secondary grouting completes, the anchor cable of prestressing force rope with anchor hole port is fixed, in anchoring The sleeve pipe allowing the anchor cable stretched out to penetrate is placed in port, hole, and prestressing force rope is through sleeve pipe and extends to outside sleeve pipe, by sleeve pipe Encapsulation process is carried out with anchor hole port;
(6), pouring domatic matrix: after pretension section is provided with, its vicinity is carried out concreting, concreting is to set At the pipe mouth of pipe, making and carry angled domatic matrix, the domatic and sleeve pipe of domatic matrix is vertically arranged;
(7), pretension anchoring: after domatic matrix has poured, placing prestressed slab at the sleeve pipe mouth of pipe, prestressing force rope is through pre- Stress plate, when the coagulation grade of the concrete at domatic matrix is more than 80%, stretch-draw pretightning force rope makes tension force reach 1.1- 1.2N, stretch-draw 2 times, keep 15min every time, be offloaded to lock load, use anchor head will to be in the prestress rope of pretightning force state Rope is fixed on prestressed slab, after anchor head locking, if being found to have the loss of obvious pretightning force when being in lax, should compensate Draw, if find pretightning force increment exceed design axle power 10% time, after should loosening again stretch-draw to turn down prestress value;
(8), closure: after pretension has anchored, exposed sleeve pipe, prestressed slab and anchor head outside concrete is carried out concrete Pour closure, complete construction.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: during once grouting Using once grouting pipe, the once grouting pipe mouth of pipe is in 50-100mm position below slurry all the time, and marginal not slurry limit is moved to anchoring Port, hole is until detaching anchor hole, and once grouting completes in 1h, and once grouting pressure is 5Mp.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: during secondary grouting Using secondary grouting pipe, secondary grouting tube wall is offered injected hole, and is blocked injected hole, and secondary grouting pressure is 0.25Mp。
Domatic building concrete layer landslide-proofing construction technology the most according to claim 3, it is characterised in that: along anchor cable axis Direction is disposed with multiple isolating frame for strengthening anchor cable and anchor hole inner concrete bonding strength on anchor cable.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 4, it is characterised in that: described isolating frame Including having the circular connector connecting chamber, the most multiple reinforcement extended to anchor hole of described circular connector, phase The isolation area for arranging secondary grouting pipe is formed between adjacent two reinforcements.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: prestressing force rope Use before pouring and eliminate rust, and at its surface brush Colophonium, finally parcel Colophonium glass-fiber-fabric, the parcel number of plies is no less than two layers, Filling with butter in the socket of sleeve pipe two ends, depth of cracking closure is 100-200mm.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: anchor head is in closure Before, use rust cleaning, painting corrosion resistant coating to carry out antirust, during closure, increase the company between domatic matrix reinforcing steel net cover is placed above Connect intensity.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: described anchor cable with Anchor hole keeps identical axiality.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: outside set tube wall Side welding reinforcement.
Domatic building concrete layer landslide-proofing construction technology the most according to claim 1, it is characterised in that: at anchor head Concrete closure thickness is not less than 100mm.
CN201610515989.9A 2016-07-04 2016-07-04 A kind of slope surface building concrete layer landslide-proofing construction technology Expired - Fee Related CN106120817B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108005097A (en) * 2017-12-15 2018-05-08 兰州理工大学 High gradient slope top of the slope construction/build thing anchor raft foundation construction and construction method
CN112832262A (en) * 2021-01-05 2021-05-25 汕头大学 Geotechnical engineering slope reinforcement device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147440A (en) * 2013-03-14 2013-06-12 黄河勘测规划设计有限公司 Construction method of prestressed anchor cable
CN104775428A (en) * 2015-04-23 2015-07-15 万军利 Compound-type prestressed anchor cable structure and construction method thereof
CN204703159U (en) * 2015-06-17 2015-10-14 万军利 Prefabricated anchor head pressure anchor wire structure
CN105569049A (en) * 2015-12-18 2016-05-11 深圳市福田建安建设集团有限公司 Construction method of high-pressure-bearing water-depth foundation pit supporting anchor rod

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103147440A (en) * 2013-03-14 2013-06-12 黄河勘测规划设计有限公司 Construction method of prestressed anchor cable
CN104775428A (en) * 2015-04-23 2015-07-15 万军利 Compound-type prestressed anchor cable structure and construction method thereof
CN204703159U (en) * 2015-06-17 2015-10-14 万军利 Prefabricated anchor head pressure anchor wire structure
CN105569049A (en) * 2015-12-18 2016-05-11 深圳市福田建安建设集团有限公司 Construction method of high-pressure-bearing water-depth foundation pit supporting anchor rod

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108005097A (en) * 2017-12-15 2018-05-08 兰州理工大学 High gradient slope top of the slope construction/build thing anchor raft foundation construction and construction method
CN108005097B (en) * 2017-12-15 2024-02-23 兰州理工大学 High-steep slope top construction/building anchor raft foundation structure and construction method
CN112832262A (en) * 2021-01-05 2021-05-25 汕头大学 Geotechnical engineering slope reinforcement device and method
CN112832262B (en) * 2021-01-05 2022-07-05 汕头大学 Geotechnical engineering slope reinforcement device and method

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Granted publication date: 20180703