CN204663550U - Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole - Google Patents
Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole Download PDFInfo
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- CN204663550U CN204663550U CN201520275758.6U CN201520275758U CN204663550U CN 204663550 U CN204663550 U CN 204663550U CN 201520275758 U CN201520275758 U CN 201520275758U CN 204663550 U CN204663550 U CN 204663550U
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Abstract
The utility model discloses in a kind of hole the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts and go along with sb. to guard him grid, comprise be made up of glass fiber-reinforced polymer (1) and reinforcing bar (2) go along with sb. to guard him grid, described grid surrounding of going along with sb. to guard him is the reinforcing bar (2) of laterally arranging, reinforcing bar (2) end is fixed in tunnel body of wall, and glass fiber-reinforced polymer (1) two ends at middle part overlap fixing respectively with the reinforcing bar (2) of both sides by U-shaped card (4); Described grid of going along with sb. to guard him is vertically fixed with glass fiber dowel (3).For the engineering characteristic started in shield machine bored tunnel, the utility model is Promethean have employed glass fiber-reinforced polymer substitute bored tunnel termination within the walls reinforcement fabrication go along with sb. to guard him the construction technology of grid, this technology is compared with the wall construction technology of conventional steel bar concrete termination, there is good machinability, reduce construction risk, accelerating construction progress, construction technology simple and fast, be easy to safe mass control, the features such as stability under loading.
Description
Technical field
The utility model relates to subway work field, particularly relates in a kind of hole the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts and goes along with sb. to guard him grid.
Background technology
In recent years along with the fast development of urban track traffic, make subway work place and the surrounding city such as urban road, existing building environment intersect influence each other more and more, the procedure technology of subway work is gradually complicated, under various factors restriction, shield machine is except starting in normal station, sometimes also can carry out starting (starting in hole) in bored tunnel, bring great risk to construction safety, progress.
Shield structure export & import is the key link in shield tunnel construction process.End well space enclosing structure is generally reinforced concrete structure, and shield cutter cannot be leaned on directly to cut, and needs to carry out artificial chisel to supporting pile structure and removes.After space enclosing structure dug destruction, the structure behind soil body exposes, the reasons such as the more difficult control of underground water, easily occurs the dangerous situations such as ground layer soil body landslide, surface subsidence during shield structure export & import.
Utility model content
Technical problem to be solved in the utility model is: provide in a kind of hole the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts to go along with sb. to guard him grid, this grid is compared with the wall of conventional steel bar concrete termination, there is good machinability, reduce construction risk, accelerating construction progress, construction technology simple and fast, be easy to safe mass control, the features such as stability under loading, are applicable to bored tunnel, first structure construction that Station need be abolished, as carried out the termination wall construction etc. of shield launching in bored tunnel hole.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in a kind of hole, comprise be made up of glass fiber-reinforced polymer and reinforcing bar go along with sb. to guard him grid, described grid surrounding of going along with sb. to guard him is the reinforcing bar of laterally arranging, reinforcing bar end is fixed in tunnel body of wall, and the glass fiber-reinforced polymer two ends at middle part are fixed with the bar splicing of both sides respectively by U-shaped card; Described grid of going along with sb. to guard him is vertically fixed with glass fiber dowel.
Described grid of going along with sb. to guard him can be divided into originating terminal women's head-ornaments grid, machinable termination face grid and face grid according to installation site; The described end face head grid that starts is divided into 4 lattice by interim reinforcing bar and stull reinforcing bar, and glass fiber-reinforced polymer needs to be fixed in lattice according to cutting; Glass fiber-reinforced polymer structure in the grid of face, described machinable termination is that sub-circular is fixed on middle part.
Described glass fiber-reinforced polymer shaped portion is no more than shield machine cutting radius.
Described grid of going along with sb. to guard him also is provided with the stirrup of laterally arranging, in order to stability and the intensity of reinforcing glass fiber bar grid, described glass fiber-reinforced polymer is fixed by iron wire colligation and stirrup, and inner side is also fixed with snakelike muscle, is also connected with U-shaped muscle between longitudinally adjacent glass fiber-reinforced polymer.
Described glass fiber-reinforced polymer also carries out spreading by U-shaped card and glass fiber-reinforced polymer.
Described grid periphery of going along with sb. to guard him also is provided with the glass fiber anchor pole be fixed in the soil body.Anchor pole is squeezed in the soil body along the face of grid, outer limb 40 ° ~ 45 °, and adopts U-shaped card to be connected firmly with face glass fiber-reinforced polymer, strengthens face stressing conditions in the earth formation.
Described U-shaped card width is slightly larger than the width of fiberglass fiber muscle and reinforcing bar, and upper end is closed with billet and with nut check.
Described stirrup is bent into square, and glass fiber-reinforced polymer colligation is in the corner of inner side.
The technique effect that the utility model adopts technique scheme to have is:
For the engineering characteristic started in shield machine bored tunnel, the utility model is Promethean have employed glass fiber-reinforced polymer substitute bored tunnel termination within the walls reinforcement fabrication go along with sb. to guard him the construction technology of grid, this technology is compared with the wall construction technology of conventional steel bar concrete termination, there is good machinability, reduce construction risk, accelerating construction progress, construction technology simple and fast, be easy to safe mass control, the features such as stability under loading.By adopting this construction technology, ensure that construction safety, accelerating construction speed, improve workmanship, reduce construction cost, achieve good construction effect.
The successful Application of this technology, solves glass fiber-reinforced polymer and just props up actual application problem in structure at bored tunnel, can provide instruct and use for reference the shield launching constructing tunnel under conditions of similarity, has good promotion and application and is worth.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail
Fig. 1 is face, machinable termination cell structure schematic diagram
Fig. 2-1 is the end face head grid schematic diagram one that starts
Fig. 2-2 is the end face head grid schematic diagram two that starts
Fig. 2-3 is the end face head grid schematic diagram three that starts
Fig. 2-4 is the end face head grid schematic diagram four that starts
Fig. 3-1 is glass fiber-reinforced polymer and bar splicing figure
Fig. 3-2 is that glass fiber-reinforced polymer and glass fiber-reinforced polymer overlap and scheme
Fig. 4 is U-shaped card schematic diagram
Fig. 5 is face grid sectional drawing
Fig. 6 is face grid expanded view
Fig. 7 is construction flow chart
Fig. 8 is glass fiber rockbolt installation figure
Wherein, 1-glass fiber-reinforced polymer, 2-reinforcing bar, 3-glass fiber dowel, 4-U shape is blocked, 5-originating terminal women's head-ornaments grid, face, 6-machinable termination grid, 7-face grid, the interim reinforcing bar of 8-, 9-stull reinforcing bar, 10-stirrup, 11-glass fiber anchor pole, 12-billet, 13-concrete, the snakelike muscle of 14-, 15-glass fiber-reinforced polymer overlapping regions, 16-U shape muscle
Detailed description of the invention
Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in a kind of hole as shown in Figure 1, comprise be made up of glass fiber-reinforced polymer 1 and reinforcing bar 2 go along with sb. to guard him grid, described grid surrounding of going along with sb. to guard him is the reinforcing bar 2 of laterally arranging, reinforcing bar 2 end is fixed in tunnel body of wall, and glass fiber-reinforced polymer 1 two ends at middle part overlap fixing respectively with the reinforcing bar 2 of both sides by U-shaped card 4; Described grid of going along with sb. to guard him is vertically fixed with glass fiber dowel 3.Shield launching construction can directly cut starting end head wall, avoids artificial chisel to remove construction, reduces construction risk, accelerating construction progress.
Glass fiber-reinforced polymer 1 be less than by high performance alkalinity 0.8% alkali-free glass fibre (E-Glass) roving or high-strength glass fibre (S) roving and resin matrix (epoxy resin, vinylite), curing compound, the surface configuration of employing forming and hardening process combining is the body of rod of full thread formula, also known as GFRP muscle.Compared with reinforcing bar 2, glass fiber-reinforced polymer 1 has that tensile strength is high, corrosion resistance good, nonmagnetic, quality light, heat transfer and electrical conduction ability is low and can cutting good, have the advantages such as good cohesiveness with concrete.Shield launching construction can directly cut starting end head wall, avoids artificial chisel to remove construction, reduces construction risk, accelerating construction progress.
Go along with sb. to guard him grid and can be divided into originating terminal women's head-ornaments grid 5, face, machinable termination grid 6 and face grid 7 according to installation site; The described end face head grid 5 that starts is divided into 4 lattice by interim reinforcing bar 8 and stull reinforcing bar 9, and glass fiber-reinforced polymer 1 needs to be fixed in lattice according to cutting; Glass fiber-reinforced polymer 1 structure in face, described machinable termination grid 6 is that sub-circular is fixed on middle part.
Glass fiber-reinforced polymer 1 shaped portion is no more than shield machine cutting radius, is convenient to shield machine cutting operation, also can reduce the loss of material.
As shown in Figure 5 and Figure 6, go along with sb. to guard him the stirrup 10 that grid is also provided with laterally arrangement, described glass fiber-reinforced polymer 1 is fixed by iron wire colligation and stirrup 10, and inner side is also fixed with snakelike muscle 14, is also connected with U-shaped muscle 16 between longitudinally adjacent glass fiber-reinforced polymer 1; Stirrup 10 is bent into square, and glass fiber-reinforced polymer 1 colligation is in the corner of inner side.
As shown in Fig. 3-1 and Fig. 3-2, glass fiber-reinforced polymer 1 as shown in Figure 4 also carries out spreading by U-shaped card 4 and glass fiber-reinforced polymer 1.
As shown in Figure 8, go along with sb. to guard him grid periphery and be also provided with the glass fiber anchor pole 11 be fixed in the soil body, anchor pole is squeezed in the soil body along the face of grid, outer limb 40 ° ~ 45 °, and adopts U-shaped card 4 to be connected firmly with glass fiber-reinforced polymer 1.
U-shaped card 4 width is slightly larger than the width of fiberglass fiber muscle 1 and reinforcing bar 2, and upper end is closed with billet 12 and with nut check.
Construction flow chart as shown in Figure 7, in a specific embodiment of this case, its detailed process is as follows:
(1) prepare before construction: the same with reinforcing bar, glass fiber-reinforced polymer 1 work certificate, quality certificate, examining report that producer or testing agency provide should be checked when product is marched into the arena, kind, specification, color and luster and quantity are carried out an acceptance inspection.
(2) machinable concrete grating makes: in wall machinable region, tunneling termination, steel grating reinforcing bar glass fiber-reinforced polymer 1:1 replaces, glass fiber-reinforced polymer belongs to fragile material, inflexibility, termination within the walls glass fiber stirrup 1, snakelike muscle 14 and U-shaped card 4 is all shaped in manufacturer production, and scene is assembled according to designing requirement.
(3) tunnel excavation: this interval tunneling section constructing method is the construction of CRD method, No. 1 pilot tunnel digs 1m when excavating to No. 2, No. 3 pilot tunnels more, glass fiber-reinforced polymer 1 being reserved amount of lap (1m) is embedded in soil, overlaps in order to No. 2, No. 3 pilot tunnel glass fiber-reinforced polymer and No. 1 pilot tunnel glass fiber-reinforced polymer.No. 2, No. 3 pilot drives time also need to reserve glass fiber-reinforced polymer lap length.Wherein, accompanying drawing 2-1 is No. 1 pilot tunnel grid figure, accompanying drawing 2-2 be No. 2 pilot tunnel grid figure, accompanying drawing 2-3 be No. 3 pilot tunnel grid figure accompanying drawing 2-4 is No. 4 pilot tunnel grid figure.
(4) solidifying of the working face and closure construction: the outer soil body of plug body of wall adopts glass fiber-reinforced polymer anchor pole 11 to reinforce, and glass fiber-reinforced polymer anchor pole 11 adopts Φ 32, long 3m glass fiber-reinforced polymer 1, and setting angle is 20 ~ 25 degree, spacing 1m.Before setting glass fiber-reinforced polymer anchor pole 11, in the face soil body, first get out the hole of diameter 100mm, dark 3m by the some position designed and angle with rig, again the glass fiber-reinforced polymer 1 of diameter 32mm is put in the eye accomplished fluently, with space between cement mortar filled glass fiber muscle 1 and the soil body, fixing glass fiber bar anchor pole 11.After anchor pole has set, lay one deck Φ 6@150 × 150 glass fiber-reinforced polymer mesh sheet at face, steel mesh reinforcement lap length is 200mm, and then sprayed mortar closes face.
(5) grills stands: the machinable termination within the walls main muscle of glass fiber and peripheral structure reinforcing bar adopts U-shaped card 4 to be connected, and U-shaped card 4 should adapt with muscle material diameter.Between glass fiber-reinforced polymer 1 and reinforcing bar 2, glass fiber-reinforced polymer muscle 1, lap length is not less than 1m, often the U-shaped card 4 of place's overlap joint installation two, and the main muscle 1 of glass fiber is connected with adopting iron wire improving bud grafting between stirrup 10.
(6) vertical dowel: inside and outside two row Φ 22 vertical glass fiber dowels 3, spacing 0.3m are set between the wall glass fiber-reinforced polymer grid of termination.
(7) sprayed mortar: after termination wall grid, mesh sheet and vertical dowel 3 complete, carry out construction of shotcrete, after sprayed mortar, degree is 450mm.Sprayed mortar surface should be closely knit, smooth, free from flaw, come off, the phenomenon such as drain spray, hollowing, percolating water.
It should be noted that above-mentioned detailed description of the invention of the present utility model only for exemplary illustration or explain principle of the present utility model, and do not form restriction of the present utility model.Therefore, any amendment made when not departing from spirit and scope of the present utility model, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.In addition, the utility model claims be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and amendment.
Claims (8)
1. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in a hole, it is characterized in that: comprise be made up of glass fiber-reinforced polymer (1) and reinforcing bar (2) go along with sb. to guard him grid, described grid surrounding of going along with sb. to guard him is the reinforcing bar (2) of laterally arranging, reinforcing bar (2) end is fixed in tunnel body of wall, and glass fiber-reinforced polymer (1) two ends at middle part overlap fixing respectively with the reinforcing bar (2) of both sides by U-shaped card (4); Described grid of going along with sb. to guard him is vertically fixed with glass fiber dowel (3).
2. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole according to claim 1, it is characterized in that: described in go along with sb. to guard him grid and can be divided into originating terminal women's head-ornaments grid (5), face, machinable termination grid (6) and face grid (7) according to installation site; The described end face head grid (5) that starts is divided into 4 lattice by interim reinforcing bar (8) and stull reinforcing bar (9), and glass fiber-reinforced polymer (1) needs to be fixed in lattice according to cutting; Glass fiber-reinforced polymer (1) structure in face grid, described machinable termination (6) is that sub-circular is fixed on middle part.
3. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole according to claim 1, it is characterized in that: described glass fiber-reinforced polymer (1) shaped portion is no more than shield machine cutting radius.
4. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole according to claim 1, it is characterized in that: described in go along with sb. to guard him the stirrup (10) that grid is also provided with laterally arrangement, described glass fiber-reinforced polymer (1) is fixed by iron wire colligation and stirrup (10), inner side is also fixed with snakelike muscle (14), is also connected with U-shaped muscle (16) between longitudinally adjacent glass fiber-reinforced polymer (1).
5. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole according to claim 1, it is characterized in that: described glass fiber-reinforced polymer (1) also carries out spreading by U-shaped card (4) and glass fiber-reinforced polymer (1).
6. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole according to claim 1, it is characterized in that: described in go along with sb. to guard him grid periphery and be also provided with the glass fiber anchor pole (11) be fixed in the soil body, anchor pole is squeezed in the soil body along the face of grid, outer limb 40 ° ~ 45 °, and adopt U-shaped card (4) to be connected firmly with glass fiber-reinforced polymer (1).
7. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole according to claim 1, it is characterized in that: described U-shaped card (4) width is greater than the width of fiberglass fiber muscle (1) and reinforcing bar (2), upper end with billet (12) close and with nut check.
8. grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts according to claim 4, and it is characterized in that: described stirrup (10) is bent into square, glass fiber-reinforced polymer (1) colligation is in the corner of inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275758.6U CN204663550U (en) | 2015-04-30 | 2015-04-30 | Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275758.6U CN204663550U (en) | 2015-04-30 | 2015-04-30 | Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole |
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| CN204663550U true CN204663550U (en) | 2015-09-23 |
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| CN201520275758.6U Active CN204663550U (en) | 2015-04-30 | 2015-04-30 | Grid is gone along with sb. to guard him in the interval engineering glass fiber-reinforced polymer construction of the shield structure that starts in hole |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386273A (en) * | 2017-08-11 | 2017-11-24 | 山东大学 | A kind of shield launching receives and uses novel compositions H types stake and its construction technology |
| CN107662281A (en) * | 2017-09-22 | 2018-02-06 | 中建交通建设集团有限公司 | The connecting node of special-shaped glass fiber bar and reinforcing bar, mix muscle cage and construction method |
-
2015
- 2015-04-30 CN CN201520275758.6U patent/CN204663550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386273A (en) * | 2017-08-11 | 2017-11-24 | 山东大学 | A kind of shield launching receives and uses novel compositions H types stake and its construction technology |
| CN107662281A (en) * | 2017-09-22 | 2018-02-06 | 中建交通建设集团有限公司 | The connecting node of special-shaped glass fiber bar and reinforcing bar, mix muscle cage and construction method |
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