CN1448590A - New structure of reinforced retaining wall - Google Patents
New structure of reinforced retaining wall Download PDFInfo
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- CN1448590A CN1448590A CN 02112848 CN02112848A CN1448590A CN 1448590 A CN1448590 A CN 1448590A CN 02112848 CN02112848 CN 02112848 CN 02112848 A CN02112848 A CN 02112848A CN 1448590 A CN1448590 A CN 1448590A
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- reinforcement
- shingle nail
- ring
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Abstract
The new structure of ribbed retaining wall consists of ribbed rings, stuffing, connecting parts and wall boards. The ribbed rings distributed inside the stuffing and the stuffing constitute the reinforcing body, and the wall boards are fixed with connecting parts. Compared with available ribbed retaining wall with tensile ribs, the reinforcing body of the present invention has clear stress, high design reliability, lowered cost of ribbed material, good compatibility to stuffing, easy anticorrosion of the ribbed material, easy construction and other advantages.
Description
1. general introduction:
The present invention relates to a kind of new structure of reinforced retaining wall.
Existing reinforced earth bulkhead mainly is made up of bar strip [15], filler [5] and shingle nail [10] three parts.The bar strip [15] of dispersed placement in filler [5] and filler [5] are formed the reinforcement body jointly, and by the direct fixing shingle nail [10] of bar strip [15].
Reinforced earth bulkhead of the present invention mainly is made up of reinforcement ring [1], filler [5], linkage [6] and shingle nail [10] four parts.The reinforcement ring [1] of dispersed placement in filler [5] formed the reinforcement body jointly with filler [5], and shingle nail [10] is fixing by linkage [6].
2. prior art brief introduction:
Existing reinforced earth bulkhead is to be reinforcement material with bar strip [15], rely on the distortion of the about filler beam of frictional force [5] that produces between bar strip [15] and the filler [5], thereby reach the purpose of stablizing the soil body, the researcher has carried out a large amount of tests and theoretical research for exploring the interaction mechanism between bar strip [15] and the filler [5].
3. the deficiencies in the prior art:
Yet because diversity, the complexity of filler [5] and the limitation of means of testing of bar strip [15] material, will be exactly the reinforcement body that forms under the various different conditions be given a definition and be unusual difficulty, as the value like the coefficient of friction resistance, the value that obtains during from model testing widely different with the value of field measurement sometimes (list of references 2.).Exactly because the mechanism of action between bar strip [15] and the filler [5] is very complicated and be difficult to prediction, event causes multiple design theory and deposits, but all reasonable all can not be generally complete, this makes the designer usually feel lack confidence to theoretical calculated data, for engineering safety is considered and have to be increased reinforced bands quantity according to the personal experience, thereby cause expense to increase.
In addition, bar strip [15] surface is difficult to anticorrosion and also is the deficiency of existing reinforced earth technology to defectives such as filler [5] compliance are relatively poor.
4. the technology of the present invention characteristics:
4.1 the mechanism of action: the present invention adopts reinforcement ring [1] to substitute bar strip [15], is combined to form the reinforcement body by reinforcement ring [1] and filler [5].The mechanism of action of reinforcement ring [1] is to make full use of the high characteristic of reinforcing bar tensile strength, the lateral pressure commentaries on classics that filler [5] produces in the ring is born by reinforcement ring [1]: the filler [5] in the reinforcement ring [1] is squeezed under the vertical load effect and produces lateral expansion, and reinforcement ring [1] has retrained this lateral deformation, lateral pressure all is converted into by lacing wire annulus [2] bears.Reinforcement ring [1] has been blocked the transmission of ring inside pressure outside ring, makes " cake " shape thing of filler [5] formation in the annulus, and the reinforced earth entity is formed in several layers " native cake " intersection stack back.
4.2. test is directly perceived, DESIGN RELIABILITY height: do reinforcement material with reinforcement ring [1] and can avoid some loaded down with trivial details and complicated micro-analysis, need only carry out macroscopic observation to " round pie " reinforcement body: go up adhering resistance strain sheets at a certain reinforcement ring [1], can learn that the filler [5] in this reinforcement ring [1] produces much lateral pressures under the vertical load effect.Self-evident, the engineering design that is based upon on the clear and definite and measured data reliable basis of the mechanism of action has higher reliability, and also making to make full use of material behavior and reduce the reinforcement material expense significantly becomes possibility.
4.3. it is good: the stable frictional resistance that depends primarily between bar strip [15] and filler [5] particle of existing reinforced earth to filler [5] compliance, therefore more exquisite to the physical property and the granular size of filler [5], cohesive soil is not ideal filler [5] because of having creeping property, sandy soil is adopted in general hope, and this just makes to apply and is subjected to certain limitation.
And that reinforcement ring [1] just surrounds filler [5] in the ring is in aggregates to stop lateral force to extend out, no matter and be that cohesive soil or sandy soil are all the same.
4.4. reinforcement material is easy to anticorrosion: any anti-corrosion material spreads upon the frictional resistance that all can influence to a great extent on the bar strip [15] between bar strip [15] and filler [5]; this scruple is arranged just; so generally will not adopt in the existing reinforced earth bulkhead; yet do not have the bar strip [15] of anti-corrosion material protection will certainly influence its durability, give the permanent stable potential safety hazard that stays of retaining wall.
But adopt reinforcement ring [1] not have this scruple, almost any anti-corrosion material can use.
4.5. help construction: the less and muscle band laying process requirement height of bar shaped muscle belt spacing that existing reinforced earth bulkhead is set, construction operation is that earthing rolls behind elder generation's shop muscle band in proper order, this just is difficult to be avoided make the impaired and distortion of muscle band in the process that rolls.And adopt the working procedure of reinforcement ring [1] technology exactly opposite with the former, and be that die-cut again circular groove is inserted reinforcement ring [1] after rolling leveling earlier, both do not disturb mutually.
4.6. good in economic efficiency: high 10 meters to build, long 100 meters reinforced earth bulkheads are example, calculate respectively so that to adopt CAT bar strip [15] be the required expense of reinforcement material and be the required expense of reinforcement material with employing reinforcement ring [1], at last two kinds of expenses are compared.
4.6.1. prior art is a reinforcement material with bar strip [15], basis is as follows:
A. consolidate engineering bar strip factory forever according to Chongqing and announce CAT plastic-steel bar strip [15] market sale price: 14500 yuan per ton.
B. according in " reinforced earth bulkhead engineering atlas " (list of references 3.) the 05th page " technical-economic index list ": wall height H=10 rice, every linear meter(lin.m.) barricade need [15] 102 kilograms of CAT bar strips.
Calculate according to above-mentioned data and to build 100 meters barricades and need bar strips [15]: 102 * 100=10200 kilogram (or 10.2 tons), required expense is: 14500 * 10.2=147900 unit.
4.6.2. the present invention is that reinforcement material calculates with reinforcement ring [1]:
Shown in Fig. 1～3, barricade is high 10 meters, and 100 meters of length overalls are established 8 layers of reinforcement ring [1] altogether, and wherein: big reinforcement ring [1] diameter is 7 meters, establishes 4 layers, vertically totally 13 is listed as along barricade, adds up to 13 * 4=52; Little reinforcement ring [1] diameter is 4 meters, establishes 4 layers equally, vertically totally 23 is listed as along barricade, adds up to 23 * 4=92.
Various list of materials are calculated and are seen Table 1, table 2:
Reinforcement material detailed statement table 1.
| Project | Reinforced steel bar ring (m) | Stud (m) | Steel bar anti-corrosion (m) | | Reinforcing bar gross weight (Kg) | Geo-grid (m 2) |
| 7 meters reinforcement rings of diameter | ??3431 | ??3432 | ??6863 | ????0.888 | ??6094 | ??686 |
| 4 meters reinforcement rings of diameter | ??3468 | ??3478 | ??6946 | ????0.888 | ??6168 | ??694 |
| Anchor rod | ???2×1000＝2000 | ??2000 | ????0.888 | ??1776 | ||
| Add up to: | ??15809 | ??14038 | ??1380 | |||
Find from table 1.: 4 layers big reinforcement rings [1] are very approaching with 4 layers little reinforcement rings [1] amount of reinforcement, and therefore, if little reinforcement ring [1] is all replaced to big reinforcement ring [1], then the total consumption of reinforcing bar does not increase (seeing Figure 15,16).
Reinforcement material schedule of prices table 2.
| Material | Quantity | Unit | Unit price | Multiple valency (unit) |
| Reinforcing bar | ????14038 | ????Kg | ????2.5 | ????35095 |
| Steel bar anti-corrosion | ????15809 | ????m | ????0.7 | ????11066 |
| Geo-grid | ????1380 | ????m | ????12 | ????16560 |
| Anchor block | ????1000 | Piece | ????1 | ????1000 |
| Add up to: | ????63721 |
Always cost usefulness: 63721 yuan.
Both compare: 63721/147900=0.43 (43%), visible then the decline of reinforcement material expense is more than half if adopt reinforcement ring [1].
5. the embodiment of the invention
Below in conjunction with drawings and Examples the present invention is described further:
5.1. description of drawings:
Fig. 1, Fig. 2, Fig. 3 are respectively reinforced earth bulkhead of the present invention cross section, outer facade and plane;
Fig. 4 is prior art reinforced earth bulkhead cross section;
Fig. 5 is a reinforcement ring expanded view;
Fig. 6 is monolithic shingle nail facade and cross section;
Fig. 7 is a shingle nail composite assembly elevation;
Fig. 8 is the A-A cross section among Fig. 7;
Fig. 9 is the B-B cross section among Fig. 7;
Figure 10 is the C-C section among Fig. 8;
Figure 11～Figure 14 agrees with scheme for another kind of shingle nail;
Figure 15, Figure 16 are the another kind of reinforcement mode of putting that is periphery.
5.2. mark in the accompanying drawing:
1. reinforcement ring; 2. lacing wire annulus; 3. stud; 4. geo-grid; 5. filler; 6. linkage; 7. connecting rod; 8. anchor block; 9. ring set; 10. shingle nail; 11. tenon; 12. mortise; 13. hole; 14. latch; 15. bar strip; 16. barricade bears down on one; 17. barricade basis
5.3. make reinforcement ring [1]:
A. reinforcing bar carries out fracture and welding by design reinforcement ring [1] circumference, stud [3] fracture, and stud [3] material also can adopt prefabricated reinforced concrete short column etc.
B. reinforced steel bar ring, stud [3] are brushed pitch respectively and outer are wrapped up in the pitch geotechnique corruption of deploying troops on garrison duty.
C.3 reinforcement ring [1] skeleton is formed in a reinforced steel bar ring and some vertical studs [3] colligation, and note: stud [3] must be positioned at the reinforced steel bar ring inboard.
D. the reinforced steel bar ring inboard is adhered to (prick silk a colligation) geo-grid [4] and is made liner.
5.4. make linkage [6]: adopt reinforcement fabrication connecting rod [7], connecting rod [7] one ends are built anchor block [8], and the other end bend a ring set [9] firm welding, last all brush pitches and outside wrap up in the pitch geotechnique corruption of deploying troops on garrison duty.
5.5. dry wall panel [10] and installation: shingle nail [10] is the rectangular recess plate, and is reinforced concrete prefabricated, and tenon [11] and mortise [12] are arranged respectively on the panel upper and lower assembly unit contact surface, agrees with mutually during for assembly unit.Should install with lower floor's shingle nail [10] fissure of displacement when each layer shingle nail [10] installed, and should in position linkage [6] ring set [9] be packed into tenon [11] by designing requirement.
5.6. die-cut circular groove: when the fill subgrade layered rolling to a certain design altitude face, the smooth scope of operation is accurately drawn circle then by the definite home position of plan requirement, and by reinforcement ring [1] radius on the spot.
Die-cut steel shovel (the similar shoveling spade of shape, but do not have bending) along the die-cut piecemeal circular groove of circular arc, the circular groove degree of depth slightly is deeper than reinforcement ring [1] highly, furrow width slightly is wider than reinforcement ring [1] thickness, gets final product just in time can put down reinforcement ring [1].Die-cut kinetic energy can be by artificial knocking or mechanical stamping, and reinforcement ring [1] rams densification in fact along the ditch both sides after inserting circular groove.
6. other embodiment
6.1. another embodiment of shingle nail [10] is: hole-opening [13] respectively on the panel upper and lower assembly unit contact surface, insertion latch [14] connection during assembly unit (Figure 11～Figure 14).
6.2. at reinforcement ring [1] interlayer geo-grid [4] is set, forms the mixing reinforcement body of reinforcement ring [1], geo-grid [4] and filler [5].
6.3. on same aspect, a little reinforcement ring can be placed in the big reinforced steel bar ring, act on lateral pressure on the big reinforcement ring with minimizing.
List of references:
1. Chen Zhong reaches. and " Road Retaining Walls design ". People's Transportation Press November in 1999 the 1st edition
2. the stone name is of heap of stone. reinforced retaining wall soil pressure and the seemingly discussion of the coefficient of friction resistance. and 1993 the 4th phases of East China highway
3. the kind auspicious grade " reinforced earth bulkhead engineering atlas " of Tang. People's Transportation Press July in 1997 the 1st edition
Claims (7)
1. new structure of reinforced retaining wall, its necessary parts include reinforcement ring [1], filler [5], linkage [6] and shingle nail [10], it is characterized by: described reinforcement ring [1] and filler [5] are configured to the reinforcement body, described shingle nail [10] is the block prefabricated units of composite assembly at the construction field (site), described linkage [6] is a strip, one end connects barricade panel [10], the other end is established anchor block [8] and is inserted the reinforcement body, described linkage [6] is to rely on the uplift resistance of anchor block [8] generation that is anchored in the reinforcement body to fix shingle nail [10], and described linkage [6] is not the reinforcement material that acts in the reinforcement body.
2. be the reinforcement material that acts in the reinforcement body according to the described reinforcement ring of claim 1. [1], it is characterized by: constitute by at least 2 lacing wire annulus [2] and some studs [3] that intersect with it.
3. according to the described reinforcement ring of claim 1.2. [1], it is characterized by: the reinforcement ring is attached with liner in [1].
4. according to the described shingle nail of claim 1. [10], it is characterized by: dry wall panel [10] piece spare has tenon [11] and mortise [12], and tenon during composite assembly [11] inserts mortise [12], to form whole reinforced earth bulkhead metope.
5. according to described linkage of claim 1. [6] and the described shingle nail of claim 4. [10], it is characterized by: linkage [6] has ring set [9] at an end that connects shingle nail [10], and ring set [9] packs into shingle nail [10] tenon [11] when shingle nail [10] piece spare assembly unit.
6. according to the described shingle nail of claim 1. [10], it is characterized by: dry wall panel [10] piece spare has hole [13], has latch [14] rod to insert hole [13] during composite assembly, to form whole reinforced earth bulkhead metope.
7. according to described linkage of claim 1. [6] and the described shingle nail of claim 6. [10], it is characterized by: the end that linkage [6] connects shingle nail [10] has ring set [9], and ring set [9] packs into latch [14] rod when shingle nail [10] piece spare assembly unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112848 CN1448590A (en) | 2002-04-03 | 2002-04-03 | New structure of reinforced retaining wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112848 CN1448590A (en) | 2002-04-03 | 2002-04-03 | New structure of reinforced retaining wall |
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| CN1448590A true CN1448590A (en) | 2003-10-15 |
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| CN 02112848 Pending CN1448590A (en) | 2002-04-03 | 2002-04-03 | New structure of reinforced retaining wall |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458022C (en) * | 2005-07-28 | 2009-02-04 | 上海大学 | Stereo reinforcement earth |
| CN110186369A (en) * | 2019-05-20 | 2019-08-30 | 河海大学 | The experimental provision and method of reinforcement ring strain in a kind of detection earth structure |
| CN111005403A (en) * | 2019-12-27 | 2020-04-14 | 广西科技大学 | Assembled three-dimensional reinforced earth retaining wall and construction method thereof |
-
2002
- 2002-04-03 CN CN 02112848 patent/CN1448590A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458022C (en) * | 2005-07-28 | 2009-02-04 | 上海大学 | Stereo reinforcement earth |
| CN110186369A (en) * | 2019-05-20 | 2019-08-30 | 河海大学 | The experimental provision and method of reinforcement ring strain in a kind of detection earth structure |
| CN111005403A (en) * | 2019-12-27 | 2020-04-14 | 广西科技大学 | Assembled three-dimensional reinforced earth retaining wall and construction method thereof |
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