CN102493466A

CN102493466A - Construction method for ecological grid structures

Info

Publication number: CN102493466A
Application number: CN2011104342220A
Authority: CN
Inventors: 张绍华
Original assignee: JIANGYIN JINLIDA GABION SYSTEM PROTECTION ENGINEERING CO LTD
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2012-06-13

Abstract

The invention discloses a construction method for ecological grid structures; the construction method comprises the following steps of: (1) putting empty ecological grid cages in order and binding the empty ecological grid cages into a shape; (1) filling stones inside the cages; and (3) firmly binding the single ecological grid structure and the single adjacent ecological grid structure by using binding wires to form a shore fixing retaining wall or a green shore cushion. Compared with the traditional structure, the ecological grid structure is a flexible supporting structure and has the advantages of labor-saving and material saving in construction, low cost of construction, wide application range, good water permeability, good mechanical performance, good environmental compatibility and the like.

Description

A kind of ecological grid structure job practices

Technical field

The invention belongs to retaining wall, slope protection construction field.Particularly a kind of ecological grid structure job practices.

Background technology

In retaining wall, bank protection construction construction, because the actual conditions restriction, some places do not have condition setting construction temporory structure, can not satisfy conventional retaining wall, the construction requirement of bank protection; Need waterless operation when traditional concrete, stone masonry construction, the cofferdam is set strengthens construction investment, form easily in the work progress and pollute, be unfavorable for safeguarding ecological environment; The some places building stones are abundant, have inconvenient traffic, and adopt conventional retaining wall cost high; The some places geologic condition is bad, and is after conventional retaining wall, bank protection produce differential settlement, bigger to structural deterioration; Ecological grid structure job practices has remarkable advantages under above-mentioned situation.

Summary of the invention

The objective of the invention is to overcome the some shortcomings of conventional retaining wall, slope protection construction; Provide that a kind of labor and material saving, cost are low, applied widely, the job practices of good water permeability, mechanical property is good, the environment compatibility is good ecological grid structure, may further comprise the steps: at first will customize good ecological graticule mesh net sheet and pave to place and flatten on the ground grading; These net sheets are bent to form in the position of regulation again and do not add a cover body structure, cage structure surpasses certain-length to be needed to increase the net sheet as dividing plate in the centre, will net the position colligation securely of oblique cut grafting with supporting bundle silk; Then the net cage that assembles is placed on the appropriate position, is linked at together with the twisting steel wire of certain-length net cage with adjacent net cage in the left and right sides and levels; In net cage, load building stones then; Filling during stone used building stones require hard, corner angle, durable are arranged, guaranteeing that the operating period is met water or weathering can disintegration, fills up casing with building stones; The size of stone should be between 1.5D-2.0D, and D is the mesh nominal size of ecological graticule mesh; The building stones size at exposed surface does not allow 15% deviation.It is closely knit neat that the building stones filling is wanted; Building stones obtain an ecological grid structure after filling the leveling capping of top, back; Form solid shore barricade or green shore pad.

Said boxes and baskets are that reinforcement is consolidated the shore cage, when the reinforcement of filling is consolidated the high 1m in cage unit, shore, then should spread three layers of building stones at least; When the high 0.5m in unit; At least should spread two layers of building stones, when in casing, filling building stones, each lattice chamber packed height must not exceed 30cm than adjacent compartments; Concerning vertical or subvertical structure; The outer building stones of casing should carefully be laid to obtain clean and tidy, smooth and compact outward appearance by hand, and care should be used to when filling building stones guarantees that the PVC cuticula is not damaged; Consider the sedimentation of building stones, the height that rockfills should surpass solid shore cage 26-40mm.When using the solid shore of reinforcement cage barricade; Reinforcement net sheet and spacer screen sheet are made up of whole ecological graticule mesh net sheet, and the backfill behind every construction one deck retaining wall on the reinforcement net sheet just needs the follow-up backfill to accomplish and compacting, obtain the solid cage barricade unit, shore of a reinforcement; Couple together with the solid shore cage barricade unit colligation of adjacent reinforcement again; Form the solid shore of reinforcement cage barricade so from lower to upper,, accomplish construction until the design height that reaches ecological graticule mesh barricade.

The present invention compares ecological grid structure with existing traditional structure be a kind of flexible retaining structure, and construction has advantages such as labor and material saving, cost are low, applied widely, good water permeability, mechanical property is good, the environment compatibility is good.

Description of drawings

Fig. 1 is the casing assembling process sketch map of ecological grid structure in the instance of the present invention;

Fig. 2 is the sketch map that rockfills of unit box in the instance of the present invention;

Fig. 3 is the sequential schematic of rockfilling of casing in the instance of the present invention;

Fig. 4 is the sketch map that rockfills of assembly in the instance of the present invention;

Fig. 5 strengthens the steel wire lashing sketch map for box house in the instance of the present invention connects;

Fig. 6 is casing capping sketch map in the instance of the present invention;

Fig. 7 is the assembling sketch map of the solid shore of reinforcement in the instance of the present invention cage;

(above Fig. 1,4,5,6,7 is stereogram)

Marginal data: 1. spacer screen sheet; 2. cover plate; 3. panel net sheet; 4. partition 5. prick silk; 6. exposed face stone-laying; 7. inner stone-laying; 8. fixing wood (steel) frame 9. the inner steel wire of strengthening; 10. tiltedly draw the reinforcement steel wire 11. the solid shore of drill rod 12. reinforcements cage reinforcement net sheet 13. the solid shore of reinforcement cage panel; 14. backfill; 15. backfill building stones; 16. geotextile.

The specific embodiment

A kind of ecological grid structure job practices may further comprise the steps: at first carry out the casing assembling like Fig. 1 and shown in Figure 4, stretching spacer screen sheet 1, cover plate 2, panel net sheet 3 and partition 4; Guarantee all crease correct positions during assembling, the casing group should be settled by the design drawings position successively, and by the designing requirement location; Need hanging wire adjustment planeness during the location, spacer web should become 90o to intersect with body, forms rectangle or square casing or casing group through colligation; Colligation connects with pricking silk 5, plays connection by the edge, colligation silk 5 should with the steel wire of twine with material; Each road colligation should be that doublet cord and hinge are tight, and the end of steel wire is rolled over inwards; Carry out colligation then, spacer web is with each colligation of the angle of cut everywhere of body, and spacer web is with the every interval 20 ~ 25cm place colligation of body junction; Four jiaos of each colligations up and down of adjacent casing group together, the upper and lower frames line or the broken line of adjacent casing group, should the 20 ~ 25cm colligation of every interval together; When the adjacent frame line of colligation inferior horn one, there is the casing group at the then every square meter colligation of net sheet bonding surface 2 places of adjacent casing group like the below; Should lower square box colligation in the lump be fused, after each layer case connects completion; Available fixedly wood (steel) frame 8 (more than the long 6m) is temporary fixed along layer case edge, to guarantee the straight smoothness of casing charging back edge line.

The building stones that then carry out as shown in Figure 2 load; That used building stones require is hard, corner angle, durable are arranged; Guaranteeing that the operating period is met water or weathering can disintegration, fills up solid shore cage with building stones, and the size of stone should be between 1.5D-2.0D (D is the mesh nominal size of ecological graticule mesh).Inner stone-laying 7 sizes allow 15% deviation.

As shown in Figure 3 when the reinforcement of filling is consolidated the high 1m in cage unit, shore, then should spread three layers of building stones at least; When the high 0.5m in unit; At least should spread two layers of building stones, when in casing, filling building stones, each lattice chamber packed height must not exceed 30cm than adjacent compartments; Concerning vertical or subvertical structure; Gu the exposed face stone-laying 6 of shore cage should carefully be laid to obtain clean and tidy, smooth and compact outward appearance by hand, care should be used to when filling building stones guarantees that the PVC cuticula is not damaged.Consider the sedimentation of building stones, the height that rockfills should surpass solid shore cage 26-40mm.

Strengthen the setting of strengthening steel wire that steel wire is strengthened like Fig. 5 and needs shown in Figure 6,9, the corner is provided with tiltedly to draw strengthens steel wire 10.By following requirement colligation: the box unit that 1m is high, highly locate colligation 1/3 and 2/3; 0.5m colligation is highly located 1/2 in high unit; Inner reinforcement steel wire 9 should connect the exposed face and the opposite thereof of lattice chamber; Rear seal-cover should be built to build on the smooth basis and carry out at the top building stones again; Suitable drill rod 11 holddown plates 2 that use earlier are again with the capping clamping calmly after every end neighborhood of nodes, more in addition colligation; Cover plate 2 and casing frame intersecting lens, should the 20 ~ 25cm colligation of every interval together

Wall thickness as shown in Figure 7 need lay geotextiles by Structural Design Requirement, should be on the interface of structure mask and backfill before construction laying geotextile 16, all should stretch out 0.3m at top and fabric; During 14 constructions; Should prevent to damage geotextile during backfill 14, the supper compactor tool must be at least apart from casing 1m, to reduce the damage to casing; Use artificial compacting machinary compacting filling soil behind the wall; Surface 1m should use the hand held compacting machine carefully to operate, to avoid retaining wall or slope table surface damage during with interior compacting.The every installation one deck of casing, in time backfill one deck soil; The assembling and the construction sequence of the solid shore of muscle cage: retrieval unit and placing it on smooth, the hard plane in bundle part, the solid shore of stretching reinforcement cage reinforcement net sheet 12, the solid shore cage panel 13 of reinforcement and partition 4 carry out the installation of mask.Guarantee that all net sheet positions put correctly, the top marshalling on all limits, adjacent cells connects with setting fastening.Setting fastening should every interval 20 ~ 25cm, connects along the web plate edge, to guarantee 15 surfacings of backfill building stones; The bottom surface filler was answered grinding compacting, smooth when bar strip was laid, and required the muscle band is stretching, tension, and it is not overlapping to tile; Do not curl; Do not twist together and gauffer not, vertical with the barricade face, afterbody becomes the homogeneous radiation shape.It is firm to be connected with metope, must not have the filler of hard, sharp corners directly to contact, and fills out 30cm more when banketing, and it is pressed onto desired height.The soil class of recommending fits between 0.02mm and the 6mm.With traditional compacting machine compacting, degree of compaction should be able to reach the degree of standard machine 95%, when other unit successively is installed, every layer of unit should with its on and lower unit around mask, be connected.

Claims

1. an ecological grid structure job practices comprises the steps:

(1) the ecological graticule mesh boxes and baskets of sky is put neat and colligation moulding;

(2) in boxes and baskets, load stone;

(3) single ecological grid structure and adjacent single ecological grid structure, firm with the colligation of bundle silk each other, form solid shore barricade or green shore pad.

2. a kind of ecological grid structure job practices according to claim 1; It is characterized in that: during said step (2) filling stone used building stones require hard, corner angle, durable are arranged; Guaranteeing that the operating period is met water or weathering can disintegration; Fill up casing with building stones, the size of stone should be between 1.5D-2.0D, and D is the mesh nominal size of ecological graticule mesh; The building stones size at exposed surface does not allow 15% deviation.

3. a kind of ecological grid structure job practices according to claim 1 is characterized in that: said boxes and baskets are that reinforcement is consolidated the shore cage, when the reinforcement of filling is consolidated the high 1m in cage unit, shore, then should spread three layers of building stones at least; When the high 0.5m in unit; At least should spread two layers of building stones, when in casing, filling building stones, each lattice chamber packed height must not exceed 30cm than adjacent compartments; Concerning vertical or subvertical structure; The outer building stones of casing should carefully be laid to obtain clean and tidy, smooth and compact outward appearance by hand, and care should be used to when filling building stones guarantees that the PVC cuticula is not damaged; Consider the sedimentation of building stones, the height that rockfills should surpass solid shore cage 26-40mm; Institute's reinforcement net sheet and spacer screen sheet are made up of whole ecological graticule mesh net sheet; Backfill behind every construction one deck retaining wall on the reinforcement net sheet just needs the follow-up backfill to accomplish and compacting; Obtain the solid cage barricade unit, shore of a reinforcement, couple together with the solid shore cage barricade unit colligation of adjacent reinforcement again, form the solid shore of reinforcement cage barricade so from lower to upper; Until the design height that reaches ecological graticule mesh barricade, accomplish construction.