CN105937196B - A kind of roadbed peg board formula spells wide structure and construction method - Google Patents
A kind of roadbed peg board formula spells wide structure and construction method Download PDFInfo
- Publication number
- CN105937196B CN105937196B CN201610347219.8A CN201610347219A CN105937196B CN 105937196 B CN105937196 B CN 105937196B CN 201610347219 A CN201610347219 A CN 201610347219A CN 105937196 B CN105937196 B CN 105937196B
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- Prior art keywords
- pile
- plate
- stake
- prestressed pipe
- construction
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- 238000010276 construction Methods 0.000 title claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 103
- 239000010959 steel Substances 0.000 claims abstract description 103
- 238000007569 slipcasting Methods 0.000 claims abstract description 33
- 230000002787 reinforcement Effects 0.000 claims abstract description 16
- 239000011381 foam concrete Substances 0.000 claims abstract description 13
- 239000002002 slurries Substances 0.000 claims abstract description 8
- 239000007787 solids Substances 0.000 claims abstract description 6
- 210000003205 Muscles Anatomy 0.000 claims description 40
- 239000004567 concrete Substances 0.000 claims description 24
- 238000004080 punching Methods 0.000 claims description 20
- 238000004513 sizing Methods 0.000 claims description 19
- 239000000945 fillers Substances 0.000 claims description 16
- 239000011440 grout Substances 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 8
- 239000010410 layers Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 239000000463 materials Substances 0.000 claims description 7
- 230000003014 reinforcing Effects 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- 235000010582 Pisum sativum Nutrition 0.000 claims description 4
- 238000002513 implantation Methods 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims 2
- 239000008107 starch Substances 0.000 claims 2
- 235000019698 starch Nutrition 0.000 claims 2
- 240000004713 Pisum sativum Species 0.000 claims 1
- 238000000034 methods Methods 0.000 abstract description 5
- 238000005516 engineering processes Methods 0.000 abstract description 4
- 238000010586 diagrams Methods 0.000 description 8
- 241000219843 Pisum Species 0.000 description 3
- 101710015560 S9 Proteins 0.000 description 3
- 101710066832 Segment-10 Proteins 0.000 description 3
- 101710043030 orf8 Proteins 0.000 description 3
- 239000011901 water Substances 0.000 description 3
- 229920000642 polymers Polymers 0.000 description 2
- 239000011241 protective layers Substances 0.000 description 2
- 239000007921 sprays Substances 0.000 description 2
- 281000119710 All-Steel companies 0.000 description 1
- 210000000481 Breast Anatomy 0.000 description 1
- 280000312338 Pavement companies 0.000 description 1
- 101710049997 Segment-11 Proteins 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 239000004746 geotextiles Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injections Substances 0.000 description 1
- 239000011499 joint compounds Substances 0.000 description 1
- 239000000203 mixtures Substances 0.000 description 1
- 239000000565 sealants Substances 0.000 description 1
- 239000000243 solutions Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
Abstract
Description
Technical field
The present invention relates to a kind of roadbed stake to spell wide structure and construction method, more particularly to a kind of roadbed peg board formula spells wide structure And construction method.
Background technology
With the continuous progress of the continuous development, in recent years rural economy of economy, people's living standards continue to improve, make Obtain requirement of the people to quality of life also more and more higher.Road belongs to one of basic facilities of people's go off daily, in order to Ensure the more comfortable convenient of people's trip.Social and economic level, technical merit and construction reason when many built roads are built The restriction of thought, there is quite a few requirement for not adapted to volume of traffic growth and social development.Reorganization and expansion to existing road Just become the another solution outside newly-built road, increasingly consequence is occupied in road construction.Expand changing Roadbed is frequently encountered in building and spells the problem of wide.
Roadbed is directly connected to the normal pass of whole subgrade settlement and road using wide technology is spelled, from conventional Engineering Projects Understand, if new-old concrete bond is spelled, width position processing is bad to easily lead to the appearance of differential settlement phenomenon, and then produces longitudinal direction and split Seam, so that causing lot of unstable factor for transportation.Therefore when being laid to widening section, to strengthen new-old concrete bond The combination at position, so can be with the increase of the shear resistance of binding site so that the differential settlement that new-old concrete bond occurs obtains With stable, in case new subgrade settlement is corrupted to old road base.Roadbed is spelled simultaneously needs to remove the gear of former roadbed bank protection in wide work progress Wall, this measure are likely to result in landslide, while need again to occupy a large amount of new roadbed progress slope after the completion of roadbed pile driving construction Land resource.Without any processing under the bed course of conventional new and old roadbed stage disk bottom, single bed course is likely to result in pad The sliding of layer.
In consideration of it, being directed to new and old roadbed settlement issues, the construction Difficulties such as roadbed occupies cultivated land, need invention one kind badly at present and apply Work speed is fast, and construction quality is good, and the roadbed peg board formula to economize the land resource spells wide construction method.
The content of the invention
For the above-mentioned problems in the prior art, it is an object of the invention to provide a kind of roadbed peg board formula to spell wide knot Structure and construction method.
A kind of described roadbed peg board formula spells wide structure, including old road roadbed, former bank protection, former slope retaining wall and is followed by road Bed, it is characterised in that old road roadbed and it is followed by pouring lap segment after being provided between roadbed, overlap joint pars infrasegmentalis is poured after described and is provided with bed course, Bed course, which has, draws hole recharge body, and the hole recharge body lower end of drawing is provided with high-pressure rotary jet grouting pile；It is followed by roadbed and has prestressed pipe Stake, is provided with slurry solid the pile for prestressed pipe village week, and stake bottom is provided with prefabricated expansion stake end；Excavate to be formed to construct on former bank protection and put down Platform.
A kind of described roadbed peg board formula spells wide structure, it is characterised in that is provided with Grouting Pipe inside prefabricated expansion stake end and connects Mouthful, slip casting tube connection ports are provided with least two grout outlets, and grout outlet is equal with prefabricated expansion stake end bottom surface, close to the pipe of grout outlet Spring is fixed with wall, spring has end plate, and end plate is located under grout outlet, and prefabricated expansion stake end bottom is provided with del Pile top, through slip casting tube connection ports toward slip casting in prefabricated expansion stake end, high-pressure slip-casting is formed around prefabricated expansion stake end.
A kind of described roadbed peg board formula spells wide structure, it is characterised in that construction platform uses bubble coagulation after the completion of construction Native stepped return is built, and the cellular concrete is provided with earthing, and earthing is provided with afforestation vegetation.
A kind of described roadbed peg board formula spells wide structure, it is characterised in that pile for prestressed pipe uses sectionally smooth join structure, in advance Stress tubular pile body is provided with the pile body projection of 3 ~ 4 insertion pile bodies or pile body groove, each pile for prestressed pipe pile tube stitching portion are set There is pre-buried connecting plate, pre-buried connecting plate is annular shape, and side is provided with 3 ~ 4 groups of embedded boards, pre-buried when two pile for prestressed pipe splice Plate corresponds to welding groove shape steel plate, and groove profile steel plate is fixed by connecting bolt.
A kind of described roadbed peg board formula spells wide structure, it is characterised in that and the hole recharge body upper end of drawing is provided with steel reinforcement cage, Embedded bed course at the top of steel reinforcement cage, and backfilled with backfill material.
A kind of described roadbed peg board formula spells wide structure, it is characterised in that it is welded to connect at the top of pile for prestressed pipe with bent cap, Pile for prestressed pipe stake top is provided with stake top end plate, and 5 ~ 6 built-in fittings, bent cap are provided with 10cm ~ 15cm below pile for prestressed pipe stake top Bottom is provided with the beam bottom pre-embedded steel slab being welded to connect with stake top end plate, and beam bottom pre-embedded steel slab is provided with U-shaped embedded bar, bent cap bottom Side is provided with circular angle steel, and angle steel bottom is provided with pre-embedded bolt, and stake top end plate welds the commissure to be formed with beam bottom pre-embedded steel slab Separate type sizing punching block is installed, separate type sizing punching block both ends are fixedly connected with built-in fitting and pre-embedded bolt respectively, and separate type is fixed Shaped steel mould is provided with reserved grouting mouth and exhaust outlet, and wire netting is set in exhaust outlet, pours to be formed toward the intraoral jacking of reserved grouting Rounding bench-type concrete cover.
A kind of described roadbed peg board formula spells wide structure, it is characterised in that is followed by roadbed and is provided with beam slab, beam slab is provided with note Hole is starched, the pre-buried straight screw connection muscle of twice is symmetrical arranged in slip casting hole wall, is provided with injected hole U-shaped in insertion pile for prestressed pipe Reinforcing bar, pre-buried straight screw connection muscle connect U-shaped muscle crossbeam by straight screw sleeve, and corresponding pile for prestressed pipe stake top is past under beam slab Pre-buried filler ring is provided with lower 1m ~ 2m, U-shaped steel muscle bottom passes through pre-buried filler ring, and pre-buried filler ring is provided with embedded bar, embedded bar Upper setting supporting plate, pallet size are less than pile for prestressed pipe pile tube internal diameter, and supporting plate top is provided with reinforcing bar preformed hole.
Described roadbed peg board formula spells the construction method of wide structure, it is characterised in that comprises the following steps：
1）Excavation construction platform：Former slope retaining wall is motionless, the excavation construction platform on former bank protection；
2）Bed course processing：The drawing hole construction in the range of the bed course of plain concrete, in the earthen fill zone of bed course construction draw hole recharge Body, the soil layer area construction high-pressure rotary jet grouting pile under earthen fill zone, draw hole and be implanted into steel reinforcement cage, embedded bed course at the top of steel reinforcement cage, draw hole and adopt Backfilled with the backfill such as mortar or pea gravel concreten material；
3）Pile for prestressed pipe splices：Pile for prestressed pipe stake bottom connects Grouting Pipe, and pile for prestressed pipe both ends are provided with 2-section pipe stake The pre-buried connecting plate being welded to connect, pre-buried connecting plate side is provided with 3 ~ 4 groups of embedded boards, corresponding when two pile for prestressed pipe splice Embedded board connected by two U-steel plate welds, groove profile steel plate is fixed by connecting bolt；
4）Lay positioning plectane：Positioning plectane is connected and composed by half setting circle plate of two locking devices, positions plectane It is provided with jack and lays platform, two and half setting circle sleeve-boards is entered into pile for prestressed pipe, rotating locking apparatus fixes both, and two Individual half setting circle plate split is obtained spelling Seams, and the horizontal level of positioning plectane is corrected by level meter 67；
5）Lay jack：Laid in the jack of positioning plectane and place jack on platform, jack end bond with The arc support of pile for prestressed pipe matching；
6）It is implanted into pile for prestressed pipe：Pile for prestressed pipe is lifted by crane, groove profile steel plate is placed on positioning plectane, the arc of jack end Shape support is close to pile tube, and the number of degrees shown according to the inclinator for being arranged on pile for prestressed pipe pile tube top are hung down using jack correction pile tube Straight degree, jack is withdrawn after perpendicularity reaches requirement, is then taken positioning plectane apart, is completed the implantation of pile for prestressed pipe；
7）High-pressure slip-casting：Noted after absolute altitude is fallen under pile for prestressed pipe toward slip casting in Grouting Pipe, slurries through slip casting tube connection ports Enter prefabricated expansion stake business bottom, form high-pressure slip-casting, then take out Grouting Pipe；
8）Bent cap and pile tube concatenation construction：The stake top end plate of bent cap and beam bottom pre-embedded steel slab and pile for prestressed pipe welds, in advance Installed on the built-in fitting of stress pile tube stake top and be inserted in bent cap bottom angle steel with separate type sizing punching block, separate type sizing punching block top Pre-embedded bolt in and it is fixed, then jacking pours to form rounding bench-type concrete cover；
9）Beam slab and pile tube concatenation construction：U-shaped steel muscle is put into the pile tube of pile for prestressed pipe, by the U-shaped muscle in injected hole Horizontal bar is connected and fixed on U-shaped steel muscle with pre-buried straight screw connection muscle by straight screw sleeve, then slip casting；
10）Construction platform is filled：Construction platform is filled with cellular concrete after the completion of construction, surface earthing, and is planted green Change plant.
Described roadbed peg board formula spells the construction method of wide structure, it is characterised in that positioning plectane is two blocks of semicircular ring steel plates Formed as half setting circle plate, positioning plectane top is provided with level meter, and the locking device includes two kinds：
1）Rotary connection structure：Each half setting circle plate one end is provided with screw rod, and connecting plate with holes, company with holes are connected on screw rod Fishplate bar is provided with chute, and half setting circle plate other end correspondence position is provided with the connection being connected with the chute of connecting plate with holes Post, when two and half setting circle plates splice, the connecting plate with holes of one of them half setting circle plate is rotated, by the chute of connecting plate with holes Connecting pole is buckled into, completes splicing；
2）Promote attachment structure：Each half setting circle plate one end is provided with connection pin buckle, and the other end is provided with connecting pin bores, connects The connecting pin of pin buckle is provided with handle, when two and half setting circle plates splice, promotes the handle of one of them half setting circle plate, by even Pin is pushed into the connecting pin bores of another half setting circle plate, completes splicing.
Described roadbed peg board formula spells the construction method of wide structure, it is characterised in that jack, jack end are provided with thousand Jin top baffle, both sides are provided with lateral side baffle.
By using above-mentioned technology, compared with prior art, the present invention has the characteristics of following and beneficial effect：
1）The present invention is by roadbed side slope scope inner hole high-pressure rotary jet grouting pile strengthening construction, excavation construction platform bubble Concrete step pours recovery, then earth-covering greening, form of construction work economy environmental protection again；
2）While the present invention is reinforced by drawing hole construction high-pressure rotary jet grouting pile in the range of bed course, draw hole implanted reinforced bar cage insertion Bed course, and using the backfill of the backfill material such as mortar, it may be mentioned that the resistance to overturning of embankment bed course, prevent bed course from sliding；
3）Outside connecting plate is reserved using welding in the pile tube junction of the present invention, multigroup connecting plate has also been reserved in end both sides Welding groove shape steel plate, U-steel plate weld make pile tube piece more firm, at the same when transferring pile tube the groove profile steel plate can be shelved on it is fixed On circle of position plate, implantation pile tube time slot shape steel plate can also play a part of cutting soil；
4）Grouting port is reserved at pipe pile bottom of the present invention, and grouting port side respectively sets spring, and spring has steel plate, works as water Because the gravity of cement mortar, spring elongation, end plate move down when under mud filling, high pressure grouting at pile end is formed；
5）The pre-buried straight screw connection muscle of precast beam concrete grouting hole wall of the present invention is connected with the U-shaped muscle horizontal bar of stake top.This Connected mode can fix U-shaped muscle.
6）The beam bottom pre-embedded steel slab weld seam separate type sizing punching block jacking of stake top end plate and bent cap of the present invention pours rounding Bench-type concrete cover, it can prevent weld seam from reducing intensity due to being exposed to for a long time in air；
7）The construction method of the present invention is simple, workable, suitable for popularization and application.
Brief description of the drawings
Fig. 1 is that roadbed peg board formula of the present invention spells wide structure and construction method schematic diagram；
Fig. 2 is to draw hole implanted reinforced bar cage schematic diagram under bed course of the present invention；
Fig. 3 is pile for prestressed pipe splicing schematic diagram of the present invention；
Fig. 4 is present invention positioning plectane layout drawing；
Fig. 5 is present invention lifting pile for prestressed pipe figure；
Fig. 6 is present invention positioning plectane connecting pin schematic diagram；
Fig. 7 is pile for prestressed pipe stake bottom built-in slip casting pipe schematic diagram of the present invention；
Fig. 8 is bent cap of the present invention and pile tube connection figure；
Fig. 9 is that bent cap of the present invention is connected top view with pile tube；
Figure 10 is that bent cap beam bottom pre-embedded steel slab of the present invention pours with rounding bench-type concrete cover at stake top end plate weld joint Schematic diagram；
Figure 11 is beam slab of the present invention and pile for prestressed pipe connection diagram；
Figure 12 is embedded bar of the present invention, supporting plate, pre-buried filler ring position view；
Figure 13 is pile for prestressed pipe insertion surface groove schematic diagram of the present invention；
Figure 14 is the pre-buried filler ring structure chart of the present invention；
Figure 15 is the pre-buried straight screw connection muscle of the present invention and U-shaped steel muscle horizontal bar linear screw thread sleeve connecting structure figure；
Figure 16 is construction process figure of the present invention.
In figure：The 6. old road roads 1. relative 2. Soft Soil Layer of crust layer, the 3. relative former slope retaining wall 5. of hard stratum 4. bankets The prestressed pipe of 13. guardrail of former 12. pavement structure of bank protection of lap segment 11. 14. is poured after the bed water stability detritus 10. of 7. rendzinas 8. Stake 15. is starched 16. high-pressure slip-casting of solid, 17. del pile top, the 18. prefabricated high-pressure rotary jet grouting pile 20. of stake end 19. that expands and drawn The afforestation vegetation 27. of 25. earthing of hole recharge body 21. construction platform, 22. bed course, 23. steel reinforcement cage, 24. cellular concrete 26. The backfill material geotextiles 31. of 29. fluid sealant 30. of cushion block 28. are followed by the beam slab 34.U steel bars of 32. end plate of roadbed 33. 35 36. injected hole of 35.U type muscle horizontal bars, 37. grouting material, the 38. pre-buried stake top of 39. straight screw sleeve of straight screw connection muscle 40. High-elastic raised 46. pile bodies of the pre-buried pile body of filler ring 45. of 42. supporting plate of polymer pad, 43. embedded bar 44. of end plate 41. are recessed The angle steel 52. of 47. beam bottom 50. rounding bench-type concrete cover of pre-embedded steel slab 49. bent cap of 48.U types embedded bar of groove 51. The built-in fitting 54. of pre-embedded bolt 53. wire netting 58. of 56. exhaust outlet of the separate type reserved grouting mouth of sizing punching block 55. 57. The groove profile steel plate 63. of 61. connecting bolt of pre-buried 60. embedded board of connecting plate of weld seam 59. 62. positions the piece 65. of plectane 64. The jack of 66. screw rod of connecting plate with holes, 67. level meter, 68. lateral side baffle, 69. arc support, 70. connecting pole 71. is laid flat The inclinator 78. of 76. prestressed pipe stake top of very heavy 73. jack of top plate washer 74. handle, 75. connecting pin of platform 72. 77. The spring of slip casting tube connection ports 79..
Embodiment
Below in conjunction with Figure of description, the invention will be further described, but protection scope of the present invention is not limited in This：
Present embodiment Construction Technique of High Pressure Revolving Spraying of the present invention, concreting technique, poured and applied with concrete lift-up Work etc. belongs to routine techniques, is just not repeated in this embodiment, and emphasis illustrates that the present invention relates to the embodiment of structure.
As represented in figures 1 through 14, a kind of roadbed peg board formula of the invention spells wide structure, including old road roadbed 6, former bank protection 11, original Slope retaining wall 4 and roadbed 31 is followed by, old road roadbed 6 and is followed by pouring lap segment 10 after being provided between roadbed 31, overlap joint is poured after described 10 bottoms of section are provided with bed course 22, and bed course 22, which has, draws hole recharge body 20, and the lower end of hole recharge body 20 of drawing is provided with high-pressure rotary-spray Stake 19, draw the upper end of hole recharge body 20 and be provided with steel reinforcement cage 23, the embedded bed course 22 in the top of steel reinforcement cage 23, and expect 28 backfills with backfill；Afterwards Connect roadbed 31 and have pile for prestressed pipe 14, be provided with slurry solid 15 in the village of pile for prestressed pipe 14 week, stake bottom is provided with prefabricated expansion Stake end 18；Excavated on former bank protection 11 and form construction platform 21, construction platform 21 uses the ladder of cellular concrete 24 after the completion of construction Type is returned and built, and the cellular concrete 24 is provided with earthing 25, and earthing 25 is provided with afforestation vegetation 26, prefabricated to expand inside stake end 18 Provided with slip casting tube connection ports 78, slip casting tube connection ports 78 are provided with least two grout outlets, grout outlet and the prefabricated bottom of expansion stake end 18 Face is equal, is fixed with spring 79 on the tube wall of grout outlet, spring 79 has end plate 32, and end plate 32 is located at grout outlet Under, the prefabricated bottom of expansion stake end 18 is provided with del pile top 17, is noted through slip casting tube connection ports 78 toward prefabricated expansion stake end 18 is interior Slurry, high-pressure slip-casting 16 is formed around prefabricated expansion stake end 18；
It is followed by roadbed 31 and is provided with beam slab 33, beam slab 33 is provided with injected hole 36, and it is pre- to be symmetrical arranged twice in the wall of injected hole 36 Bury straight screw connection muscle 38, injected hole 36 is provided with the U-shaped steel muscle 34 in insertion pile for prestressed pipe 14, U-shaped steel muscle 34 with it is pre-buried Straight screw connection muscle 38 is welded to connect, and pre-buried straight screw connection muscle 38 connects U-shaped muscle horizontal bar 35, beam slab by straight screw sleeve 39 The stake top of pile for prestressed pipe 14 corresponding to 33 times is down provided with pre-buried filler ring 44 at 1m ~ 2m, the bottom of U-shaped steel muscle 34 passes through pre-buried filler ring 44, pre-buried filler ring 44 is provided with embedded bar 43, sets supporting plate 42 on embedded bar 43, the size of supporting plate 42 is less than pile for prestressed pipe 14 pile tube internal diameters, the top of supporting plate 4 are provided with reinforcing bar preformed hole.
As shown in Fig. 2 laying from the bottom up is banketed 5, rendzinas 7 successively under drawing the old road roadbed 6 of the side of hole recharge body 20 And water stability detritus 8, pile for prestressed pipe 14 of the invention use sectionally smooth join structure, the pile body of pile for prestressed pipe 14 passes through provided with 3 ~ 4 The pile body projection 45 of logical pile body or pile body groove 46, each pile tube stitching portion of pile for prestressed pipe 14 are provided with pre-buried connecting plate 59, in advance Connecting plate 59 is buried as annular shape, side is provided with 3 ~ 4 groups of embedded boards 60, and when two pile for prestressed pipe 14 splice, embedded board 60 welds Corresponding groove shape steel plate 62, groove profile steel plate 62 are fixed by connecting bolt 61.
The top of pile for prestressed pipe 14 of the present invention is welded to connect with bent cap 49, and the stake top of pile for prestressed pipe 14 is provided with stake top end plate 5 ~ 6 built-in fittings 53 are provided with 40,10cm ~ 15cm below the stake top of pile for prestressed pipe 14, the bottom of bent cap 49 is provided with and stake top end plate The 40 beam bottom pre-embedded steel slabs 47 being welded to connect, beam bottom pre-embedded steel slab 47 are provided with U-shaped embedded bar 48, and the bottom side of bent cap 49 is provided with circle The angle steel 51 of shape, the bottom of angle steel 51 are provided with pre-embedded bolt 52, the weld seam that stake top end plate 40 is formed with the welding of beam bottom pre-embedded steel slab 47 Place installs separate type sizing punching block 54, and separate type sizing punching block 54 both ends are fixed with built-in fitting 53 and pre-embedded bolt 52 respectively to be connected Connect, separate type sizing punching block 54, which is provided with, reserves grouting mouth 55 and exhaust outlet 56, and wire netting 57 is set in exhaust outlet 56, past reserved Jacking pours to form rounding bench-type concrete cover 50 in grouting mouth 55.
As illustrated in figs. 1-16, roadbed peg board formula of the invention spells the construction method of wide structure, comprises the following steps：
1）Excavation construction platform 21：First surveying setting-out, then construction machinery is marched into the arena, former slope retaining wall 4 is motionless, in former bank protection Excavation construction platform 21 on 11；
2）Bed course 22 is handled：The drawing hole construction in the range of the bed course 22 of plain concrete, is drilled after stake machine is in place, drilling The earthen fill zone and soil layer area of bed course 22, in earthen fill zone construction draw hole recharge body 20, the soil layer area construction high-pressure rotary-spray under earthen fill zone Stake 19, draw hole and be implanted into steel reinforcement cage 23, the embedded bed course 22 in the top of steel reinforcement cage 23, draw hole using the backfill such as mortar or pea gravel concreten The backfill of material 28；
3）Pile for prestressed pipe 14 splices：Pile for prestressed pipe is first made, acceptance(check) before marching into the arena, 14 bottoms of pile for prestressed pipe connect Grouting Pipe is connect, the both ends of pile for prestressed pipe 14 are provided with the pre-buried connecting plate 59 that 2-section pipe stake is welded to connect, the pre-buried side of connecting plate 59 Provided with 3 ~ 4 groups of embedded boards 60, when two pile for prestressed pipe 14 splice, corresponding embedded board 60 is welded by two groove profile steel plates 62 Connection, groove profile steel plate 62 are fixed by connecting bolt 61；
4）Lay positioning plectane 63：Positioning plectane 63 is connected and composed by half setting circle plate of two locking devices, is positioned Plectane 63 is provided with jack and lays platform 71, two and half setting circle sleeve-boards is entered into pile for prestressed pipe 14, rotating locking apparatus will Both are fixed, and two and half setting circle plate splits are obtained spelling Seams 64, and the horizontal level of positioning plectane 63 is corrected by level meter 67；
5）Lay jack 73：Laid in the jack of positioning plectane 63 and jack 73, jack 73 are placed on platform 71 End bonds the arc support 69 matched with pile for prestressed pipe 14；
6）It is implanted into pile for prestressed pipe 14：Pile for prestressed pipe 14 is lifted by crane, groove profile steel plate 62 is placed on positioning plectane 63, jack The arc support 69 of 73 ends is close to pile tube, is utilized according to the number of degrees that the inclinator 77 for being arranged on the pile tube top of pile for prestressed pipe 14 is shown Jack 73 corrects pile tube perpendicularity, and jack 73 is withdrawn after perpendicularity reaches requirement, then takes positioning plectane 63 apart, completes pre- The implantation of stress pile tube 14；
7）High-pressure slip-casting 16：Connected after absolute altitude is fallen under pile for prestressed pipe 14 toward slip casting in Grouting Pipe, slurries through Grouting Pipe The prefabricated bottom of expansion stake business 18 of the injection of mouth 78, forms high-pressure slip-casting 16, then takes out Grouting Pipe；
8）Bent cap 49 and pile tube concatenation construction：The stake top end plate of bent cap 49 and beam bottom pre-embedded steel slab 47 and pile for prestressed pipe 14 40 weld, and install on the built-in fitting 53 of the stake top of pile for prestressed pipe 14 and are shaped with separate type sizing punching block 54, separate type on punching block 54 Portion is inserted in the pre-embedded bolt 52 of the bottom angle steel 51 of bent cap 49 and fixed, and then jacking pours to form rounding bench-type concrete protective Layer 50, after the intensity of rounding bench-type concrete cover 50 reaches requirement, dismantling concrete template is simultaneously conserved；
9）Beam slab 33 and pile tube concatenation construction：Hoisting prefabricated plate, U-shaped steel muscle is put into the pile tube of pile for prestressed pipe 14 34, the U-shaped muscle horizontal bar 35 in injected hole 36 and pre-buried straight screw connection muscle 38 are connected and fixed to U by straight screw sleeve 39 On steel bar 34, then toward the slip casting of injected hole 36, then lift remaining prefabricated board；
10）Construction platform 21 is filled：Construction platform 21 is filled with cellular concrete 24 after the completion of construction, surface earthing 25, And plant green plants 26.
Step 8 of the present invention）Bent cap 49 and pile tube concatenation construction, step 9）Beam slab 33 enter simultaneously with pile tube concatenation construction OK.
Positioning plectane 63 used in the present invention forms for two blocks of semicircular ring steel plates as half setting circle plate, positions on plectane 63 Portion is provided with level meter 67, and positioning plectane 63 is additionally provided with jack 73, and the end of jack 73 is provided with very heavy top baffle 72, and both sides are provided with Lateral side baffle 68, the locking device include two kinds：
1）Rotary connection structure：Each half setting circle plate one end is provided with screw rod 66, and connecting plate 65 with holes is connected on screw rod 66, Connecting plate 65 with holes is provided with chute, and half setting circle plate other end correspondence position, which is provided with to coordinate with the chute of connecting plate 65 with holes, to be connected The connecting pole 70 connect, when two and half setting circle plates splice, the connecting plate with holes 65 of one of them half setting circle plate is rotated, will be with holes The chute of connecting plate 65 buckles into connecting pole 70, completes splicing；
2）Promote attachment structure：Each half setting circle plate one end is provided with connection pin buckle 75, and the other end is provided with connecting pin bores, even The connecting pin of pin button 75 is provided with handle 74, when two and half setting circle plates splice, promotes the handle of one of them half setting circle plate Hand 74, connecting pin is pushed into the connecting pin bores of another half setting circle plate, completes splicing.
The width 26m of old road roadbed 6 in the embodiment of the present invention, the width for being followed by roadbed 31 is 23m, is provided between the two Lap segment 10 is poured after 950mm, after pour the bottom of lap segment 10 be provided with plain concrete bed course 22, the thickness of bed course 22 be 400mm, pad Hole recharge body 20 is drawn in 22 bottom of layer provided with 1, draws 20 a diameter of 120mm of hole recharge body, draws the end of hole recharge body 20 and be provided with reinforcing bar Cage 23,23 a diameter of 90mm of steel reinforcement cage, the height that bed course 22 is stretched out in the upper end of steel reinforcement cage 23 is 200mm, and with C20 pea gravel concretens Backfilled；Draw the high-pressure rotary jet grouting pile 19 that the lower end of hole recharge body 20 is provided with diameter 60cm；It is followed by roadbed 31 and has diameter 60 Pile for prestressed pipe 14, pile for prestressed pipe 14 are made of C80 high-strength concretes, fill out core and use C50 slightly expanded concretes, prestressing force The village of pile tube 14 week, stake bottom was provided with prefabricated expansion stake end 18, prefabricated provided with the slurry solid 15 for pouring into a mould to obtain by C50 slightly expanded concretes Expand 18 a diameter of 100cm of stake end, the prefabricated bottom periphery of expansion stake end 18 is provided with high-pressure slip-casting 16；Former bank protection 11 excavates formation and applied Work platform 21, dug by the outer end of bed course 22 during excavation, lower digging 4m, laterally excavate 8m, construction platform 21 is used after the completion of construction Stepped return of cellular concrete is built, and cellular concrete 24 is provided with the thick earthing 25 of 5cm, and the greening that locality is planted on earthing 25 is planted By 26, its pile body of pile for prestressed pipe 14 is provided with the pile bodies projection 45 or pile body groove 46 of 3 ~ 4 insertion pile bodies,
As shown in figure 3, each pile tube in pile tube stitching portion is provided with pre-buried connecting plate 59, pre-buried connecting plate 59 is circular steel Plate, side are provided with 4 groups of built-in fittings 60, and built-in fitting 60 is size 4cm × 3cm steel plates, and pile tube piece is the pre-buried company of upper and lower pile tube Fishplate bar 59 welds, the welding groove shape steel plate 62 of built-in fitting 60, and the fluting size of groove profile steel plate 62 is 1.5cm × 5cm, and groove profile steel plate 62 is Q235 steel, apparent size 8cm × 13cm, two groove profile steel plates 62 are fixed using M16 connecting bolts 16, all steel plate thickness of slab 4mm.
As shown in Fig. 4 ~ 5, positioning plectane 63 is that two blocks of semicircular ring steel plates form, and radius 60cm, top is provided with level meter 67, Screw rod 66, M12, prominent length 3cm are provided with per side at piece 64, screw rod 66 is provided with rotatable connecting plate 65 with holes, with holes Connecting plate 65 is steel plate Q235, thickness of slab 4mm, size 10cm × 6cm, and the opposite side of connecting plate 65 with holes is provided with chute, and chute is arc Shape, groove width 1.2cm, positioning plectane 63 are provided with jack made of T-steel plate and lay platform 71, and size is can place jack It is defined, the arc support 69 of the end of jack 73 is 4mm curved plates.
As shown in fig. 7, stake bottom, which is provided with, expands prefabricated pile end, 50mm slip casting tube connection ports are provided with inside stake end, Grouting Pipe connects Interface side is respectively provided with length 4cm springs, and spring 79 has end plate 32 made of 7cm × 7cm steel, and pile top 17 is del Pile top.
As shown in Fig. 8 ~ 10：The stake top of pile for prestressed pipe 14 is provided with stake top annular steel end plate, the lower prestress pile tube 14 of bent cap 49 15cm below stake top is provided with 6 embedded bars everywhere, and bent cap is provided with the beam bottom pre-embedded steel slab 47 of annular, on beam bottom pre-embedded steel slab 47 Provided with U-shaped embedded bar 48, the U-shaped straight section length of embedded bar 48 is 750mm, and the bottom side of bent cap 49 is provided with angle steel 51, angle steel 51 by Circular configuration made of 80mm × 80mm angle steel, angle steel 51 are provided with the bolt of M20 pre-embedded bolts 52, stake top end plate 40 and beam bottom Pre-embedded steel slab 47 welds, and commissure installs separate type sizing punching block 54, and separate type sizing punching block 54 uses pre-embedded bolt with angle steel 51 52 are fixed, and separate type sizing punching block 54 bottom is placed on built-in fitting 53, and separate type sizing punching block 54 is pre- provided with a diameter of 5cm Grouting mouth 55 and a diameter of 3cm exhaust outlet 56 are stayed, wire netting 57 is set in exhaust outlet 56, jacking pours rounding bench-type concrete Protective layer 50.The top of bent cap 49 is provided with high-elastic polymer pad with the junction of beam slab 33,
As shown in Figure 11 ~ 15：Beam slab 33 is provided with 3cm injected hole 36, and it is pre-buried to be symmetrical arranged twice in the wall of injected hole 36 Straight screw connection muscle 38,34 long 1.4m of U-shaped steel muscle, diameter 22mm, pre-buried straight screw connection muscle 38 pass through straight screw sleeve 39 and U Type muscle horizontal bar 35 is fixed, and is provided with pre-buried filler ring 44 under 33 times pile tube stake tops of beam slab at 1.2m, pre-buried support is embedded to when pile tube makes Ring 44, pre-buried filler ring 44 is with holes, aperture 24mm, and U-shaped steel muscle 34 may pass through pre-buried filler ring 44, and pre-buried filler ring 44 is provided with pre-buried steel Muscle 43,43 a diameter of 12mm of embedded bar set supporting plate 42 on embedded bar 43, and the size of supporting plate 42 is less than pile tube internal diameter, top Provided with reinforcing bar preformed hole macropore diameter 24mm, hole diameter 14mm.
Claims (8)
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| CN104278608A (en) * | 2013-07-05 | 2015-01-14 | 杭州华水市政工程有限公司 | Novel highway embankment widened structure and construction method |
| CN204401613U (en) * | 2014-10-14 | 2015-06-17 | 安徽省交通建设有限责任公司 | The structure of bored pile perforation spillage in water prevention |
| CN205775681U (en) * | 2016-05-24 | 2016-12-07 | 安徽省交通建设有限责任公司 | A kind of roadbed peg board formula spells wide structure |
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| CN1034033A (en) * | 1987-12-28 | 1989-07-19 | 湖北省工业建筑总公司机械施工运输公司 | Compound pile base construction method |
| KR20120102480A (en) * | 2011-03-08 | 2012-09-18 | 백규호 | Phc pile with improved end bearing capacity and piling method of phc pile using the same |
| CN104278608A (en) * | 2013-07-05 | 2015-01-14 | 杭州华水市政工程有限公司 | Novel highway embankment widened structure and construction method |
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