CN107604939B - A kind of reinforcement means for gravity retaining wall - Google Patents
A kind of reinforcement means for gravity retaining wall Download PDFInfo
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- CN107604939B CN107604939B CN201710671990.5A CN201710671990A CN107604939B CN 107604939 B CN107604939 B CN 107604939B CN 201710671990 A CN201710671990 A CN 201710671990A CN 107604939 B CN107604939 B CN 107604939B
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Abstract
The present invention provides a kind of reinforcement means for gravity retaining wall.The present invention adds cantilever retaining wall (4) near the foundation of gravity retaining wall (1), and vertical prestressed anchor cables (3) are additionally arranged at the bottom of in cantilever retaining wall (4), cyclopean concrete (6) are filled between Liang Qiang, it works on the three areas simultaneously, the overall stability of side slope and retaining wall can be improved.The ability of resistance to deformation of the present invention is stronger, and operation side is smaller, and the mode taken first drilling, build cantilever retaining wall (4) afterwards can drill to avoid on cantilever retaining wall (4), reduce difficulty of construction.Construction period of the invention is shorter, and cost is lower, there is biggish application value and social benefit.
Description
Technical field
The present invention relates to Building technologies, and in particular to the reinforcement technique of building, more particularly to it is a kind of for gravity type gear
The reinforcement means of cob wall.
Background technique
Gravity retaining wall is since its raw material sources is extensive, due to cheap, easy construction etc., is widely used to build
Build industry.A kind of the most widely used slope retaining pattern especially is had become in mountain area, but since this kind of retaining wall has resistance to deformation
The weak equal defect of ability is easy to appear destabilization problems, such as crack, bulge, wall bottom protuberance, even slump, and these problems are not if
Processing in time, it will great security risk is brought, the loss of financial resource and material resource is caused, it is serious to threaten life security.
To prevent above-mentioned hidden danger, gravity retaining wall need to usually be reinforced, current gravity retaining wall is most common
Reinforcing mode mainly has: (1) increasing friction pile；(2) unloading after lattice beam column+oblique prestress anchorage cable and wall, friction pile+
The combinations such as lattice beam column+anchor cable.
In the above method, lattice beam column+oblique prestress anchorage cable is using a kind of most patterns.It by
A certain amount of inclining anchor cable is laid in the lower part of retaining wall, then these anchor cables is held together with lattice beam column, to mention
The stability of high slope and retaining wall.It is engineering but in many engineerings, at the top of barricade using in red line or rolling earth behind retaining wall
There are some pipelines or the basis of buildings or structures etc., to limit the use of inclining anchor cable.
Therefore, it is necessary to be further improved above-mentioned reinforcement means, the gravity type gear that safety is more preferable, more adaptable is developed
Cob wall reinforcement means.
Summary of the invention
Technical problem to be solved by the present invention lies in above-mentioned reinforcement means is overcome the shortcomings of, study a kind of safety it is good,
Adaptable, short construction period, high treating effect gravity retaining wall reinforcement means.
The present invention is realized by following technical proposal: one of armored concrete cantilever retaining wall is arranged to reinforce gravity type
The foundation of retaining wall；And the vertical prestressed anchor cables combined with cantilever retaining wall are set, gravity retaining wall is subject to
Part of horizontal thrust is converted into the vertical force transmitted to depth, so as to enhance the general stability of side slope and retaining wall；Separately
Outside, self weight of the cyclopean concrete newly increased after cantilever retaining wall equivalent to increase gravity retaining wall, is beneficial into one
Step improves the stabilization of side slope and entire reinforcement system.
The present invention provides a kind of reinforcement means for gravity retaining wall.Specifically, a kind of vertical prestressed anchor cables
Gravity retaining wall reinforcement means in conjunction with cantilever retaining wall.
A kind of method for reinforcing gravity retaining wall provided by the invention, including the following steps:
A. setting vertical prestressed anchor cables drill: be staggered two rows at away from 0.5~1.5m of gravity retaining wall foundation
Perpendicular to the drilling of the vertical prestressed anchor cables on ground, then boring plastics or wooden cover board are protected；
B., one of cantilever retaining wall be set at 0.0~2.0m of foundation of gravity retaining wall, in cantilever retaining wall
Reserved casing, the reserved casing are corresponding with the bore position of vertical prestressed anchor cables；
C. cyclopean concrete is filled in the gap between gravity retaining wall and cantilever retaining wall to reinforce foundation, hair
Casing is reserved in stone concrete, reserved casing is corresponding with the bore position of vertical prestressed anchor cables；
D. the cover board of vertical prestressed anchor cables drilling is penetrated, installation vertical prestressed anchor cables, then slip casting, then by cantilevered
The vertical prestressed anchor cables of retaining wall two sides are linked together with the ground beam of a 500mm*400mm respectively, finally to vertically answering in advance
Power anchor cable carries out tensioning and locking, sealing off and covering anchorage；
E. a gutter in parallel is added at 0.5m~2.0m on the outside of the cantilever retaining wall, in cantilevered earth-retaining
Drain hole is set within the walls, and the drain hole for passing through cyclopean concrete and original gravity formula retaining wall penetrates through.To improve drainage system, prevent
Only adverse effect of the rainwater to entire reinforcement system.
When the drilling of vertical anchor cable is arranged in step a described in the method for the present invention: at away from 0.5~1.5m of gravity retaining wall foundation
Position, be respectively perpendicular to ground and be vertically staggered two row hole drillings, the spacing of drilling is 1.0-1.5m, aperture 125-
130mm, the depth of drilling are 10.0~15.0m or so the rock stratum of weathering (be subject in entrance).After the completion of drilling, wouldn't first it pacify
Anchor cable is filled, cover plate for drilling hole is protected.The cover board is plastics or wooden cover board.
When cantilever retaining wall is arranged in step b: the terrace before gravity retaining wall foundation is smooth clean；When the terrace
When the gutter of existing gravity retaining wall, then need gutter tamping simultaneously densification with rubble；When the terrace is loose soil
When layer, then need to fill the sandstone of 30~50cm thickness；When the terrace is hard rock-soil layer, 8-10.0cm thickness is re-layed
Sand-gravel cushion, then pour cantilever retaining wall on the terrace cleared up.
One-piece casting forms the cantilever retaining wall at the scene, and the ratio between height of wall bottom and wall is 1:3~4, wall bottom
It is 3~5:1 with the ratio between the width of wall, it specifically can be depending on site contour condition, if wall bottom width degree is 1.5~2.5m, wall
Bottom height is 0.4~0.5m, and wall width is 0.4~0.5m, and wall height is 1.5~2.0m.The cantilever retaining wall wall
Each reserved round hole on the wall bottom of two sides, hole size, quantity and position and step (1) are for installing vertical prestressed anchor cables
Drilling it is consistent, and in hole be inserted into casing protected.
The cantilever retaining wall, ground beam are all made of Reinforced Concrete Materials, and casing uses irony ripple chimney filter.
Step c is filled in the gap of cantilever retaining wall and gravity retaining wall using cyclopean concrete, filling
It is extremely straight with the top of cantilever retaining wall, the reserved hole extended at the top of cantilever retaining wall in cyclopean concrete, and
Insertion casing is protected in hole.
Prestress anchorage cable described in step d is the steel strand wires composition that 3~4 strands of diameters are 20~25mm, by vertical prestressed anchor
Vertical prestressed anchor cables are connected into one to gravity retaining wall foot of hole grouting behind shaft or drift lining, then with armored concrete ground beam by rope top
It is whole, tensioning and locking, sealing off and covering anchorage then are carried out to anchor cable.
Gutter described in step e is former gutter position to be occupied due to cantilever retaining wall and one kind for taking is remedied and arranged
It applies, constructing such as cantilever retaining wall can reuse without destroying the former gutter gutter Ze Yuan.It is arranged in cantilever retaining wall
Drain hole, which passes through cyclopean concrete and the drain hole of original gravity formula retaining wall penetrates through, newly-increased sluicing pore size, material
Matter is identical as former drain hole.
Beneficial effects of the present invention:
1. the present invention can achieve the purpose that reinforce gravity retaining wall and side slope, added near gravity retaining wall foundation
Cantilever retaining wall, and vertical prestressed anchor cables are additionally arranged at the bottom of in new cantilever retaining wall, it is mixed that rubble is filled between Liang Qiang
The overall stability of side slope and retaining wall can be improved under three pipes are straight in solidifying soil；
2. the present invention influences the environment on periphery smaller, pipeline in original retaining wall rolling earth behind retaining wall, basis will not be touched
And land red-line, avoid land used dispute.In addition when present invention construction, original gravity retaining wall is not touched, therefore
It is not in the case where causing former retaining wall support capacity to reduce due to construction disturbance；
3. the ability of resistance to deformation is stronger, compared to common gravity retaining wall, prestress anchorage cable and cantilever retaining wall
All have preferable non-deformability, even if occurring safety accident in extreme circumstances, also due to ductile fracture and to being kept away
It brings the longer reaction time danger；
4. operation side is smaller, in the place that some boundary of works area are narrow, other large-scale construction equipments, such as bored concrete pile
It is difficult to enter, and the land occupation of machinery used in present invention range is smaller, can with adaptation to local conditions carry out construction operation.In addition the present invention adopts
First drilling, the rear technique for building cantilever retaining wall are taken, can drill to avoid on cantilever retaining wall, reduce difficulty of construction；
5. the duration is shorter, in this engineering the construction of vertical prestressed anchor cables and cantilever retaining wall can alternately, from
And greatly shorten the duration.
6. cost is lower, compared to oblique prestress anchorage cable, since it is vertical construction, into the anchor cable length of supporting course
Smaller (can more oblique anchor cable shorten 40%~60%), and the project amount of the concrete such as lattice beam column can be reduced, it is in addition used
Construction material is mainly conventional reinforcing bar and cement, therefore cost is lower.
Detailed description of the invention
Longitudinal schematic diagram of Fig. 1 vertical prestressed anchor cables of the present invention and cantilever retaining wall
Fig. 2 reinforcement system top view of the present invention
Fig. 3 cantilever retaining wall skiagraph of the present invention
Fig. 4 ground beam of the present invention and anchor cable connecting node figure；
In figure: 1. gravity retaining walls；2. drilling；3. prestress anchorage cable；4. cantilever retaining wall；5. casing；6. rubble
Concrete；7. ground beam；8. gutter；9. drain hole.
Specific embodiment
The present invention is further illustrated below by way of specific embodiment.
Embodiment 1
Family members' apartment block gravity retaining wall of certain factory, former height is 6.0m, and the height of rear retaining wall is with rolling earth behind retaining wall
Increase and increase to 9.0m, after operation 2~3 years, phenomena such as a large amount of " bulge ", crack occurs in discovery retaining walls back, occurs
The retaining wall total length 50.0m of unstable phenomenon.Preliminary Scheme of Strengthening be using lattice beam column+oblique prestress anchorage cable, but due to
The red line of the retaining wall is located at the wall top position of retaining wall, therefore local villager does not allow to implement the program, and rear use vertically is answered in advance
Power anchor cable+armored concrete cantilever retaining wall mode is reinforced, and so far, operation state is good.
Cantilever retaining wall, ground beam described in the present embodiment are all made of Reinforced Concrete Materials, and casing uses the ripple of irony
Chimney filter, vertical prestressed anchor cables use steel strand wires, and the above material can be obtained by commercially available customization.
The present invention above-mentioned area implement it is a kind of using vertical prestressed anchor cables in conjunction with cantilever retaining wall for weight
The reinforcement means of power formula retaining wall, comprising: a. is in the erecting perpendicular to ground close to gravity retaining wall foundation arranged for interval two rows
Drilling to prestress anchorage cable, and boring plastic cover plate protected, b. it is outstanding in gravity retaining wall foundation side arrangement
Arm-type retaining wall, reserves that casing is corresponding with the bore position of vertical prestressed anchor cables, c. is in gravity type in cantilever retaining wall
Cyclopean concrete is filled in gap between retaining wall and cantilever retaining wall to reinforce foundation, reserves casing in cyclopean concrete
, d. corresponding with the bore position of vertical prestressed anchor cables penetrates the cover board of vertical prestressed anchor cables drilling, installation anchor cable, then
Slip casting, then by the vertical anchor cable of cantilever retaining wall two sides be respectively adopted ground beam be linked together, finally to anchor cable carry out tensioning with
Locking, sealing off and covering anchorage, e. improve drainage system, increase a gutter on the outside of cantilever retaining wall, increase in cantilever retaining wall
If drain hole, and the drain hole for passing through cyclopean concrete and gravity retaining wall penetrates through.
It is described that specific step is as follows:
A. it vertical prestressed anchor cables drilling construction: in the terrace position of the foundation 0.0-2.0 away from gravity retaining wall 1, bores
Drilling 2 of the two rows perpendicular to the vertical prestressed anchor cables 3 on ground, drilling 2 totally 51, the array pitch of two row hole drillings 2 are 1.5m, every row
Drilling 2 between spacing be 2.0m, two row hole drillings, 2 arranged for interval, aperture 130mm, drill 2 depth be 15.0m, in
The rock stratum of weathering is 0.5m.After the completion of drilling 2, vertical prestressed anchor cables 3 wouldn't be installed, protected drilling 2 with plastic cover plate；
B. cast in situs cantilever retaining wall 4: the terrace before gravity retaining wall 1 is smooth clean, original gravity at this
The gutter of formula retaining wall, is filled and is compacted using sandstone；Again in the bed course for being laid with 10.0cm thickness above, cast in situs reinforcing bar is mixed
Solidifying soil cantilever retaining wall 4,4 wall bottom width degree of cantilever retaining wall are 2.0m, and wall bottom height is 0.5m, and wall width is 0.5m,
Wall height is 2.0m；The set that each reserved row is used to dock with drilling 2 on the wall bottom of the wall two sides of cantilever retaining wall 4
Pipe 5；
C. after 4 structural strength of cantilever retaining wall reaches C30, in the sky of cantilever retaining wall 4 and gravity retaining wall 1
At gap, filled using cyclopean concrete 6, be fills up to it is concordant with the top of cantilever retaining wall 4, it is pre- in cyclopean concrete 6
The hole extended at the top of cantilever retaining wall is stayed, and is inserted into casing 5 in hole and is protected.
D., vertical prestressed anchor cables 3 are installed: drilling the cover board at 2 top of drilling, prestressed anchor cable 3 will be answered vertically in advance
Required depth grouting behind shaft or drift lining is arrived on the top of power anchor cable 3, then the vertical prestressed anchor cables 3 of 4 two sides of cantilever retaining wall are used 0.4m* simultaneously
0.5m armored concrete ground beam 7 is linked together, finally carries out tensioning and locking, sealing off and covering anchorage to vertical prestressed anchor cables 3.
E. a gutter 8 parallel with it is added on the outside of cantilever retaining wall 4,8 width of gutter is 1.0m, depth
For 0.8m.Position setting diameter corresponding with the drain hole 9 of gravity retaining wall 1 is letting out for 105mm in cantilever retaining wall 4
Water hole 9, and the former drain hole 9 for penetrating cyclopean concrete 6 and gravity retaining wall 1 penetrates through, and to improve drainage system, prevents rainwater
To the adverse effect of entire reinforcement system.
In the present embodiment, prestress anchorage cable has both strengthened the foundation of gravity retaining wall using being vertically arranged, and enhances weight
The overall stability of power formula retaining wall, and the project amount saved place, reduce the materials such as anchor cable and concrete.
Claims (8)
1. a kind of method for reinforcing gravity retaining wall, which is characterized in that this method includes the following steps:
A., the drilling (2) of vertical prestressed anchor cables (3) is set: being spaced at 0.5~1.5m of foundation away from gravity retaining wall (1)
The drilling (2) of the two rows of vertical prestressed anchor cables (3) perpendicular to ground of arrangement, then will drilling (2) plastics or wooden cover board
It protects；
B., one of cantilever retaining wall (4), cantilever retaining wall are set at 0.0~2.0m of foundation of gravity retaining wall (1)
(4) casing (5) are reserved in, the reserved casing (5) is corresponding with drilling (1) position of vertical prestressed anchor cables (3)；
C. cyclopean concrete (6) are filled in the gap between gravity retaining wall (1) and cantilever retaining wall (4) with reinforcement walls
Foot reserves casing (5) in cyclopean concrete (6), drilling (2) position phase of reserved casing (5) and vertical prestressed anchor cables (3)
It is corresponding；
D. it penetrates the cover board on drilling (2), two rows of vertical prestressed anchor cables (3), then slip casting is installed, then by cantilever retaining wall
(4) vertical prestressed anchor cables (3) of two sides are linked together, most with the armored concrete ground beam (7) of a 500mm*400mm respectively
Tensioning and locking, sealing off and covering anchorage are carried out to vertical prestressed anchor cables (3) afterwards；
E. a gutter (8) in parallel is added at the 0.5m~2.0m of cantilever retaining wall (4) outside, is kept off in cantilevered
(4) setting drain hole (9) in cob wall, and the drain hole (9) for passing through cyclopean concrete (6) and gravity retaining wall (1) penetrates through, with
Drainage system is improved, influence of the rainwater to entire reinforcement system is prevented.
2. a kind of method for reinforcing gravity retaining wall according to claim 1, which is characterized in that the step a is set
When setting drilling (2) of vertical prestressed anchor cables (3): away from the position at gravity retaining wall (1) 0.5~1.5m of foundation, difference
Two row hole drillings (2) are arranged perpendicular to ground separation, and the spacing of drilling (2) is 1.0-1.5m, aperture 125-130mm, is drilled (2)
Depth be 10.0~15.0m, drilling (2) after the completion of, first wouldn't prestressed anchor cable (3), by drilling (2) use plastics or wood
Matter cover board protects.
3. a kind of method for reinforcing gravity retaining wall according to claim 1, which is characterized in that the step b is set
When setting cantilever retaining wall (4): the terrace before gravity retaining wall (1) foundation is smooth clean；When the terrace has gravity
When the gutter of formula retaining wall, then need gutter tamping simultaneously densification with rubble；When the terrace is loose soil layer, then need
Fill the sandstone of 30~50cm thickness；When the terrace is hard rock-soil layer, the sandstone pad of 8-10.0cm thickness is re-layed
Layer, then pours cantilever retaining wall (4) on the terrace cleared up.
4. a kind of method for reinforcing gravity retaining wall according to claim 3, which is characterized in that hanged described in step b
One-piece casting forms arm-type retaining wall (4) at the scene, the ratio between height of the wall bottom of cantilever retaining wall (4) and wall for 1:3~
4, the ratio between wall bottom and the width of wall are 3~5:1；Each reserved row on the wall bottom of cantilever retaining wall (4) the wall two sides
Hole, hole size, quantity and position and step a are used to install the drilling (2) of vertical prestressed anchor cables (3) unanimously, and in hole
Casing (5) are inserted into hole to be protected.
5. a kind of method for reinforcing gravity retaining wall according to claim 1, which is characterized in that step c is in cantilever
The gap of formula retaining wall (4) and gravity retaining wall (1) is filled using cyclopean concrete (6), is fills up to and cantilevered
The top of retaining wall (4) is straight, the hole extended at the top of cantilever retaining wall is reserved in cyclopean concrete (6), and in hole
Interior insertion casing (5) is protected.
6. a kind of method for reinforcing gravity retaining wall according to claim 1, which is characterized in that pre- described in step d
Stress anchor cable (3) is the steel strand wires composition that 3~4 strands of diameters are 20~25mm.
7. a kind of method for reinforcing gravity retaining wall according to claim 1, which is characterized in that described in step e
In cantilever retaining wall (4) when setting drain hole (9), which passes through cyclopean concrete (6) and gravity retaining wall
(1) drain hole (9) perforation, drain hole (9) size, material are identical as drain hole (9) of gravity retaining wall (1).
8. a kind of method for reinforcing gravity retaining wall according to claim 1, which is characterized in that the cantilevered gear
Cob wall (4), ground beam (7) are all made of Reinforced Concrete Materials, and casing (5) uses irony ripple chimney filter, and prestress anchorage cable (3) uses
Steel strand wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671990.5A CN107604939B (en) | 2017-08-08 | 2017-08-08 | A kind of reinforcement means for gravity retaining wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710671990.5A CN107604939B (en) | 2017-08-08 | 2017-08-08 | A kind of reinforcement means for gravity retaining wall |
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| Publication Number | Publication Date |
|---|---|
| CN107604939A CN107604939A (en) | 2018-01-19 |
| CN107604939B true CN107604939B (en) | 2019-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710671990.5A Active CN107604939B (en) | 2017-08-08 | 2017-08-08 | A kind of reinforcement means for gravity retaining wall |
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| CN (1) | CN107604939B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735513A (en) * | 2019-10-24 | 2020-01-31 | 安徽四建控股集团有限公司 | Construction method of prestressed terraces |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007113342A (en) * | 2005-10-24 | 2007-05-10 | Chiken Kogyo:Kk | Method of reinforcing foundation |
| CN203429660U (en) * | 2013-08-29 | 2014-02-12 | 深圳市福田建安建设集团有限公司 | Stereo stiffened rigid-flexible combined ecological retaining wall |
-
2017
- 2017-08-08 CN CN201710671990.5A patent/CN107604939B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007113342A (en) * | 2005-10-24 | 2007-05-10 | Chiken Kogyo:Kk | Method of reinforcing foundation |
| CN203429660U (en) * | 2013-08-29 | 2014-02-12 | 深圳市福田建安建设集团有限公司 | Stereo stiffened rigid-flexible combined ecological retaining wall |
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| Publication number | Publication date |
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| CN107604939A (en) | 2018-01-19 |
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Address after: 200331 No. 6, Lane 415, Gulang Road, Putuo District, Shanghai Patentee after: Tongna testing & Certification Group Co.,Ltd. Address before: 200331 No. 6, Lane 415, Gulang Road, Putuo District, Shanghai Patentee before: SHANGHAI TONGNA CONSTRUCTION ENGINEERING QUALITY TESTING Co.,Ltd. |