CN206127853U - Adopt integral foundation structure's of grit stake dark bridge - Google Patents

Adopt integral foundation structure's of grit stake dark bridge Download PDF

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CN206127853U
CN206127853U CN201620695632.9U CN201620695632U CN206127853U CN 206127853 U CN206127853 U CN 206127853U CN 201620695632 U CN201620695632 U CN 201620695632U CN 206127853 U CN206127853 U CN 206127853U
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meters
plate
meter
bridge
floorings
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吴刚
李海
黄武浩
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COMMUNICATIONS DESIGN RESEARCH INSTITUTE Co Ltd OF JIANGXI PROV
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COMMUNICATIONS DESIGN RESEARCH INSTITUTE Co Ltd OF JIANGXI PROV
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Abstract

The utility model discloses an adopt integral foundation structure's of grit stake dark bridge, including decking, abutment and ground three, the decking is connected with the bridge pier cap on the abutment, establishes the connection bed course on the bridge pier cap, and the abutment below is the ground, decking adoption reinforced concrete hollow slab or real core plate's structure, the level reinforced concrete structure layer of mating formation on the decking, the basis of abutment is monolithic structure, the ground adopts the grit pilework, and the range of grit stake arranges that below and area at whole decking are greater than the decking. The utility model discloses beneficial effect is obvious, becomes the vehicle loading who bears subgrade soil pressure and indirect distribution from directly bearing vehicle loading, the multiple type footpath of striding, medium and small conflict of striding between footpath bay and the high abutment can be solved betterly to on a large scale the decking top depth of fill, has kept balance to pass through in the improvement underbridge, has concerned between flood discharge capacity and the engineering cost.

Description

A kind of dark bridge of employing sand-gravel pile integral type foundation structure
Technical field
This utility model belongs to field of traffic facilities, is related to a kind of dark bridge of employing sand-gravel pile integral type foundation structure.
Background technology
Last century late nineteen eighties rise, and China Higher level highway construction enters high-speed development period, by the end of the year 2010, entirely State's highway is built and reaches 6.5 ten thousand kilometers in the total kilometrage built;The total kilometrage that is open to traffic of our province highway was by 2011 1 The moon also breaches 3000 kilometers, plans that the total kilometrage that is open to traffic will break through 4000 kilometers to our province highway in 2012.It is well known that Bridges and culverts structure occupies very important status in the design of highway, the structure situation of the small culvert of our province highway, across The selection in footpath is mainly divided to two kinds of Material bridge, culvert.The selection of small bridge at present is mainly:13rd, 16,20 meters of cored slab or little Box beam;The mainly slab culvert of 2,3,4 meters of across footpaths or≤1.5 meters of pipe culvert that culvert is selected, due between bridge and culvert Across footpath difference it is larger, occur in that the bridges and culverts between 5~10 meters without the alternative situation of suitable type of bridge, it is impossible to meet high The current requirement that fast both sides of highway resident improves constantly.
But also due to the across footpath difference between bridge and culvert is larger, occur in that the bridges and culverts between 5~10 meters without suitable bridge The alternative situation of beam situation, as the level of whole society's public transit facility is improved constantly, to facilitating both sides of highway resident Current requirement is also being improved constantly.Due to the present situation that 5~10 meters of across footpaths are blank, often result in medium and small bridges and culverts across footpath and select appearance Difficult situation.Specifically include:(1)Highway crosses over mountain valley, and 15~20 meters of height of embankment, such as full mountain valley section are respectively provided with Overpass, cost are higher;Across footpath is not enough again using culvert for middle streams or road, select 2 across or 3 occur across hollow slab bridge again The too high situation of abutment.(2)With going deep into for our province new countryside construction, rural highway is greatly developed, and many villages occurs The logical cement road in village, has a lot of social connections 4 meters, and both sides are typically provided with 1 meter of small-sized irrigation ditch, only connects several villages, following to continue to expand Wide probability is little;This kind of road is substantial amounts of to be intersected with highway, selects that culvert across footpath is too small, cannot meet present situation, group Many suggestions are big;Across footpath is bigger than normal again to select bridge.(3)Mountain highway part special road section, such as tunnel portal are limited to orographic condition Waste is difficult, needs using roadbed filling to eliminate the unnecessary earthwork, tunnel slag, and this deep valley landform often needs larger row again Water structure.(4)Single span hollow slab bridge is set, it may appear that at the U platforms of bricklaying enormous amount.
The content of the invention
For the difficulty for solving to lay with above-mentioned bridges and culverts, this utility model provides a kind of using sand-gravel pile integral type foundation structure Dark bridge, reduce the position of slab bridge structure, be changed into bearing roadbed soil pressure and the vapour of distribution indirectly from carload is directly born Car load;Various across footpath species, the large-scale top of the plate depth of fill, preferably can solve Mid and minor spans spanning and high abutment it Between conflict, balance pass through under raising bridge, relation between flood carrying capacity and construction costs.It is suitable between 5~10 meters of across footpaths Bridge structure form, reach cost economic rationally simultaneously and current or flood carrying capacity under higher bridge can be met.
The technical solution adopted in the utility model is:
A kind of dark bridge of employing sand-gravel pile integral type foundation structure, including floorings, three parts of abutment and ground, bridge floor Plate is connected with the bridge pier platform cap on abutment, sets connection bed course on bridge pier platform cap, is ground below abutment;Floorings are mixed using reinforcing bar The structure of solidifying soil cored slab or/and solid slab, floorings upper end level are mated formation reinforced concrete structure layer;The basis of abutment is whole Body formula structure;Ground adopts sandstone pilework, and the arranged of sand-gravel pile is in the lower section of whole floorings and area is more than bridge floor Plate.
Floorings are the precoated plate with hinge seam, use anchor bolts between the hinge seam of floorings and bridge pier platform cap.
Abutment is vertically connected with and is constituted by both sides vertical type lighter pier and integral type foundation.
The across footpath of dark bridge is 5 meters, and floorings plate is a width of 1.49 meters, and plate hight is divided into four kinds, is respectively:Bridge floor top of the plate is banketed height When spending 0.5~3 meter, plate hight is adopted for 0.35 meter of solid slab;During 3~5 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.45 meter Circular hole cored slab;During 5~7 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.60 meter of square-hole hollow plate;Bridge floor top of the plate is banketed height When spending more than 7 meters, plate hight is adopted for 0.8 meter of square-hole hollow plate, in 1 meter of length range of floorings beam-ends, stirrup spacing is 10 lis Rice, in the range of interlude, stirrup spacing is 15 centimetres.The bridge pier platform cap on both sides is used to support the supporting surface width of floorings to distinguish For 0.48 meter;The height of vertical type lighter pier points 3 meters, 3.5 meters, 4.5 meters or 5 meters, the thickness 0.7 of vertical type lighter pier~ 0.8 meter;The height of integral type foundation is 110 centimetres, 40 centimetres or 50 centimetres of flap hem width degree.The arranged of sand-gravel pile is:Sand Stone mar pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
The across footpath of dark bridge is 6 meters, and floorings plate is a width of 1.49 meters, and plate hight is divided into four kinds, is respectively:Bridge floor top of the plate is banketed height When spending 0.5~3 meter, plate hight is adopted for 0.45 meter of circular hole cored slab;During 3~5 meters of the bridge floor top of the plate depth of fill, adopt plate hight for 0.60 meter of circular hole cored slab;During 5~6 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.75 meter of square-hole hollow plate;Bridge floor top of the plate During more than 6 meters of the depth of fill, plate hight is adopted for 0.9 meter of square-hole hollow plate;Stirrup spacing in 1.2 meters of length ranges of floorings beam-ends For 10 centimetres, in the range of interlude, stirrup spacing is 15 centimetres.The bridge pier platform cap on both sides is used for the supporting surface width for supporting floorings Degree is respectively 0.48 meter;3 meters, 3.5 meters, 4.5 meters or 5 meters of the height of vertical type lighter pier point, the thickness of vertical type lighter pier 0.7~0.8 meter of degree;The height of integral type foundation is 120 centimetres, 50 centimetres or 55 centimetres of flap hem width degree.The arrangement cloth of sand-gravel pile It is set to:Sand-gravel pile pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
The across footpath of dark bridge is 8 meters, and floorings plate is a width of 1.49 meters, and plate hight is divided into four kinds, is respectively:Bridge floor top of the plate is banketed height When spending 0.5~2 meter, plate hight is adopted for 0.6 meter of square-hole hollow plate;During 2~3 meters of the bridge floor top of the plate depth of fill, adopt plate hight for 0.75 meter of square-hole hollow plate;During 3~5.5 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.9 meter of square-hole hollow plate;Floorings During 5.5~7 meters of the depth of fill in top, plate hight is adopted for 1.0 meters of square-hole hollow plates, stirrup in 2.2 meters of length ranges of floorings beam-ends Spacing is 10 centimetres, and in the range of interlude, stirrup spacing is 15 centimetres.The bridge pier platform cap on both sides is used for the support for supporting floorings Face width is respectively 0.48 meter;3 meters, 3.5 meters, 4.5 meters or 5 meters of the height of vertical type lighter pier point, vertical type lighter pier 0.7~0.8 meter of thickness;The height of integral type foundation is 120 centimetres, 60 centimetres of flap hem width degree.The arranged of sand-gravel pile is: Sand-gravel pile pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
The across footpath of dark bridge is 10 meters, and floorings plate is a width of 1.49 meters, during 0.5~3 meter of the bridge floor top of the plate depth of fill, using plate A height of 0.9 meter of square-hole hollow plate, in 2.2 meters of length ranges of floorings beam-ends, stirrup spacing is 10 centimetres, is bound round in the range of interlude Muscle spacing is 15 centimetres.The across footpath of dark bridge is 10 meters, and the bridge pier platform cap on both sides is used to support the supporting surface width of floorings to distinguish For 0.48 meter;3 meters, 3.5 meters, 4.5 meters or 5 meters of the height of vertical type lighter pier point, the thickness 0.8 of vertical type lighter pier Rice;The height of integral type foundation is 120 centimetres, 55 centimetres of flap hem width degree.The arranged of sand-gravel pile is:Sand-gravel pile pilespacing is 3 ~4.5 times of sand-gravel pile stake footpaths.
This utility model effectively shortens the length of bridge while function needs are met, and saves construction costs in a large number, has Good economic benefit, can widely apply to highway, I and II highway and low-grade highway;Mountain area can be reduced The side of abandoning of highway, is conducive to environmental protection, effectively solves the problems, such as bumping at bridge-head this long-standing problem engineering circles;Increase The across footpath of passage, substantially increases the satisfaction of the periphery masses, while good economic benefits are obtained also obtains good Social benefit.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is partial structural diagram of the present utility model.
Reference:Floorings 1, abutment 2, vertical type lighter pier 21, integral type foundation 22, ground 3.
Specific embodiment
This utility model is described further with specific embodiment below in conjunction with the accompanying drawings, however, of the present utility model Scope is not limited to following embodiments.
Embodiment 1:
The across footpath of sand-gravel pile integral type foundation structure is adopted for 5 meters of dark bridge
(1)Floorings:
The form that floorings 1 are combined from both armored concrete solid slab and cored slab.In the upper end level of floorings Mating formation has the reinforced concrete structure of 10 cm thicks, and its concrete label is identical with stressed plate, and strength grade of concrete is C40.
The across footpath of dark bridge is 5 meters, and floorings 1 are the precoated plate with hinge seam, and the width of floorings 1 is 1.49 meters, floorings Height be 0.35 meter, 0.45 meter, 0.60 meter, 0.8 meter, totally 4 kinds of plate hights.
Wherein the solid slab of h=0.35 rice, corresponds to 0.5~3 meter of the bridge floor top of the plate depth of fill;
The circular hole cored slab of h=0.45 rice, 3~5 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 8 centimetres, base plate thickness 12 Centimetre, 25 centimetres of Circularhole diameter;
The square-hole hollow plate of h=0.6 rice, 5~7 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, base plate thickness 12 Centimetre, erect 15 centimetres of wall thickness, 103x35 centimetre of square hole;
The square-hole hollow plate of h=0.8 rice, 7~11.5 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, base plate It is thick 12 centimetres, erect 15 centimetres of wall thickness, 103x55 centimetre of square hole.
When the Reinforcement and stirrup of computing board, it is contemplated that 5 centimetres of concrete pavements participate in stress;And in cored slab Upper embedded shear connector, it is ensured that deck paving and the common stress of cored slab.
When across footpath is 5 meters, in 1 meter of length range of floorings beam-ends, stirrup spacing is 10 centimetres, stirrup in the range of interlude Spacing is 15 centimetres.
(2)Abutment:
Abutment adopts Integral Abutment structure, and Integral Abutment structure is by vertical type lighter pier 21 and integral type foundation 22 It is vertically connected with composition, Extended chemotherapy of the integral type foundation 22 for monolayer complete board type.
Vertical type lighter pier 21 preferably can bear in Vertical Load direction the subgrade soils weight that superstructure transmits, Carload, it is impossible to bear the horizontal force of the transmission of floorings 1, physical dimension is less, and economic indicator is preferable.
As the present embodiment floorings use plank frame, 1 horizontal-less thrust of floorings, vertical type lighter pier 21 While force request is met, there is preferable economic indicator.
The foundation bearing capacity that integral type foundation is required is smaller, and bricklaying quantity is larger, cost is higher.The monoblock type base of dark bridge Plinth is mainly used in the poor foundation condition of bearing capacity.
The clear span of dark bridge is 5 meters, and the bridge pier platform cap on both sides is used to support the supporting surface width of floorings 1 to be respectively 0.48 Rice, uses anchor bolts between the hinge seam of floorings 1 and bridge pier platform cap, the asphalt felt of 1 cm thick is set on bridge pier platform cap.Floorings 1 5.5 meters of calculating across footpath.The height of the dark bridge integral type foundation of 5 meters of across footpaths 22 is 110 centimetres, flap hem width degree 40 or 50 centimetres.
3 meters, 3.5 meters, 4.5 meters, 5 meters of the height of vertical type lighter pier point, is adapted to the requirement of the various headroom that are open to traffic.Uprightly 0.7~0.8 meter of the thickness of formula lighter pier, using C30 armored concrete, main stress bar diameterφ16。
Monoblock type Extended chemotherapy adopts C25 concrete, designs by flexible foundation, main stress bar diameter φ 25, spacing 10 Centimetre.
(3)Ground:
The laying of dark bridge is often positioned in hypsography low-lying, and in the mountain depression of easy hydrops, foundation bearing capacity will not be too high, for dark bridge Base form, in accordance with《Highway bridge and culvert ground and foundation design code》(JTG D63-2007)、《Building foundation treatment technology is advised Model》(JGJ 79-2002), ground selection sandstone pilework.
Sand-gravel pile structure foundation:Broken stone pile, sand pile and sand-gravel pile are collectively referred to as sand-gravel pile, refer to using vibration, impact or water The modes such as punching in soft foundation after pore-forming, then by sand or rubble be squeezed into into hole in, form the sandstone institute structure greatly from footpath Into compaction pile.Than Sand Pile Method early stage be mainly used in compacted sand foundation, with research and put into practice in-depth, particularly efficiently After energy special plane tool occurs, the disconnected expansion of range of application.To improve its treatment effect in cohesive soil, sand-gravel pile filler is expanded by sand Exhibition gravel and rubble.
Sand-gravel pile is used for loosening sand, silt, cohesive soil, plain fill and Artifical Fill Ground, mainly by the compacted of sand-gravel pile And the effect of vibration in construction makes the density increase of soil around sand-gravel pile, so that the bearing capacity of ground is improved, compressibility drop It is low.Practical engineering experience both domestic and external proves that Sand Pile Method processes sand and filled up ground effect is significant and has obtained extensively should With.Sandstone pilework should not be used in the ground of mud or silt clay.Sandstone pilework is used to process bury, saturated clay Ground must be very prudent, and as bury water content is high, bad hydraulic permeability, sandstone pilework is difficult to play compacted effectiveness, its master Act on be aliquot replacement and with bury constitute composite foundation, while accelerate weak soil discharging consolidation, so as to increase foundation soil Intensity, improve the bearing capacity of soft base.There is successful experience using sandstone pilework in bury, saturated clay, also lose The lesson for losing, must be to control deformation during use.
The effect of sand-gravel pile structure foundation receives stratum, soil property, construction machinery, construction method, the property sum of back-up sand stone The combined influence of many factors such as amount, sand-gravel pile arrangement and spacing, it is complex.Though existing many practices both at home and abroad, and once enter Go some experimental studies, have accumulated some data and experience, but relevant design parameter such as pilespacing, fill sandstone most and construction Control of quality etc. must still pass through the field test before construction and just can determine that.Sand-gravel pile is away from can not be too small, also unsuitable excessive, according to Experience proposes that sand-gravel pile pilespacing is typically can be controlled within 3~4.5 times of sand-gravel pile stake footpaths.Rational sand-gravel pile stake footpath depends on Specific mechanical ability and stratum soil property condition.After the arranged of rational sand-gravel pile pilespacing and sand-gravel pile determines, one The process range undertaken by sand-gravel pile can determine that.The increase of soil density puies forward the density on former upper strata by the reduction of its hole , to the density for requiring, hole quantity to be reduced can be by calculating for height.As long as so it is contemplated that the sand material energy for pouring into The hole for needing to reduce all is filled, then the density of soil layer also can just reach expected numerical value.
Embodiment 2:
The across footpath of sand-gravel pile integral type foundation structure is adopted for 6 meters of dark bridge
(1)Floorings:
Consider dark bridge construction be often located at that transportation condition is not convenient, construction team's technical capability be not it is very strong under conditions of it is real Apply, floorings select reinforced concrete hollow slab form, while the durability in order to improve structure, it is ensured that being total between each block of plate Same stress, mating formation in the upper end level of floorings has the reinforced concrete structure of 10 cm thicks, and its concrete label is identical with stressed plate, Strength grade of concrete is C40.
The across footpath of dark bridge is 6 meters, and floorings are the precoated plate with hinge seam, and the width of floorings is 1.49 meters, floorings Highly it is 0.45 meter, 0.60 meter, 0.75 meter, 0.9 meter, totally 4 kinds of plate hights.
Wherein h=0.45 rice circular hole cored slab, corresponds to 0.5~3 meter of the bridge floor top of the plate depth of fill, and top board is thick 8 centimetres, base plate It is thick 12 centimetres, 25 centimetres of Circularhole diameter;
H=0.6 rice square-hole hollow plates, 3~5 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, and base plate is thick 12 lis Rice, erects 15 centimetres of wall thickness, 103x35 centimetre of square hole;
H=0.75 rice square-hole hollow plates, 5~6 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, base plate thickness 12 Centimetre, erect 15 centimetres of wall thickness, 103x50 centimetre of square hole;
H=0.9 rice square-hole hollow plates, 6~10 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, base plate thickness 12 Centimetre, erect 15 centimetres of wall thickness, 103x55 centimetre of square hole.
When the Reinforcement and stirrup of computing board, it is contemplated that 5 centimetres of concrete pavements participate in stress;And in cored slab Upper embedded shear connector, it is ensured that deck paving and the common stress of cored slab.
When across footpath is 6 meters, in 1.2 meters of length ranges of floorings beam-ends, stirrup spacing is 10 centimetres, is bound round in the range of interlude Muscle spacing is 15 centimetres.
(2)Abutment:
Abutment adopts Integral Abutment structure, and Integral Abutment structure is by both sides vertical types lighter pier 21 and monoblock type base Plinth 22 is vertically connected with composition, Extended chemotherapy of the integral type foundation 22 for monolayer complete board type.
The clear span of dark bridge is 6 meters, and the bridge pier platform cap on both sides is used to support the supporting surface width of floorings 1 to be respectively 0.48 Rice, uses anchor bolts between the hinge seam of floorings 1 and bridge pier platform cap, the asphalt felt of 1 cm thick is set on bridge pier platform cap.Floorings 1 6.5 meters of calculating across footpath.The height of the dark bridge integral type foundation of 6 meters of across footpaths 22 is 120 centimetres, flap hem width degree 50 or 55 centimetres.
3 meters, 3.5 meters, 4.5 meters, 5 meters of the height of vertical type lighter pier 21 point, is adapted to the requirement of the various headroom that are open to traffic.Directly 0.7~0.8 meter of the thickness of vertical lighter pier 21, using C30 armored concrete, main stress bar diameterφ16。
The Extended chemotherapy of monolayer complete board type adopts C25 concrete, designs by flexible foundation, main stress bar diameterφ25, 10 centimetres of spacing.
(3)Ground:
With embodiment 1, ground selects sandstone pilework.
Embodiment 3:
The across footpath of sand-gravel pile integral type foundation structure is adopted for 8 meters of dark bridge
(1)Floorings:
The across footpath of dark bridge is 8 meters, and floorings select reinforced concrete hollow slab form, and floorings 1 are with the prefabricated of hinge seam Plate, the width of floorings 1 is 1.49 meters, and the height of floorings 1 is 0.6 meter, 0.75 meter, 0.90 meter, 1.0 meters, totally 4 kinds of plate hights.
Wherein, the square-hole hollow plate of h=0.6 rice, 0.5~2 meter of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, Base plate is thick 12 centimetres, erects 15 centimetres of wall thickness, 103x25 centimetre of square hole;
The square-hole hollow plate of h=0.75 rice, 2~3 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, and base plate is thick 12 centimetres, erect 15 centimetres of wall thickness, 103x50 centimetre of square hole;
The square-hole hollow plate of h=0.9 rice, 3~5.5 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, and base plate is thick 12 centimetres, erect 15 centimetres of wall thickness, 103x65 centimetre of square hole;
The square-hole hollow plate of h=1.0 rice, 5.5~7 meters of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, and base plate is thick 12 centimetres, erect 15 centimetres of wall thickness, 103x75 centimetre of square hole.
The reinforced concrete pavement layer of 10 cm thicks is set on plate, strength grade of concrete is C40.The longitudinal stress of computing board When reinforcing bar and stirrup, it is contemplated that 5 centimetres of concrete pavements participate in stress;And shear connector is buried on cored slab, it is ensured that bridge floor spreads Dress and the common stress of cored slab.
8 meters of the clear span of floorings 1, calculates 8.5 meters of across footpath, and main reinforcement is adoptedφ28,6~8 centimetres of spacing, stirrup diameter For φ 12.In 2.2 meters of length ranges of floorings beam-ends, stirrup spacing is 10 centimetres, and in the range of interlude, stirrup spacing is 15 lis Rice.
(2)Abutment:
Abutment adopts Integral Abutment structure, and Integral Abutment structure is by vertical type lighter pier 21 and integral type foundation 22 It is vertically connected with composition, Extended chemotherapy of the integral type foundation 22 for monolayer complete board type.
Due to 8 meters of dark spanning footpaths it is larger, it is higher to the requirement for bearing capacity of ground, using integral type foundation.
The clear span of dark bridge is 8 meters, and the bridge pier platform cap on both sides is used to support the supporting surface width of floorings 1 to be respectively 0.48 Rice, uses anchor bolts between the hinge seam of floorings 1 and bridge pier platform cap, the asphalt felt of 1 cm thick is set on bridge pier platform cap.Floorings 1 8.5 meters of calculating across footpath.The height of integral type foundation 22 is 120 centimetres, flap hem width degree 60c.
3 meters, 3.5 meters, 4.5 meters, 5 meters of the height of vertical type lighter pier 21 point, is adapted to the requirement of the various headroom that are open to traffic.Directly 0.7~0.8 meter of the thickness of vertical lighter pier 21, using C30 armored concrete, main stress bar diameterφ16。
Integral type foundation 22 adopts C25 concrete, designs by flexible foundation, main stress bar diameterφ25,10 lis of spacing Rice.
(3)Ground:
With embodiment 1, ground selects sandstone pilework.
Embodiment 4:
The across footpath of sand-gravel pile integral type foundation structure is adopted for 10 meters of dark bridge
(1)Floorings:
The across footpath of dark bridge is 10 meters, and floorings are the precoated plate with hinge seam, and the width of floorings is 1.49 meters, floorings Highly it is 0.90 meter.
The square-hole hollow plate of h=0.9 rice, 0.5~3 meter of the correspondence bridge floor top of the plate depth of fill, top board is thick 13 centimetres, and base plate is thick 12 centimetres, erect 15 centimetres of wall thickness, 103x65 centimetre of square hole.
The reinforced concrete pavement layer of 10 cm thicks is set on floorings, strength grade of concrete is C40.The longitudinal direction of computing board When steel bar stress and stirrup, it is contemplated that 5 centimetres of concrete pavements participate in stress;And shear connector is buried on cored slab, it is ensured that bridge Mat formation and the common stress of cored slab in face.
10 meters of the clear span of floorings, calculates 10.5 meters of across footpath, and main reinforcement is adoptedφ28,6~8 centimetres of spacing, stirrup is straight Footpath is φ 12.In 2.2 meters of length ranges of floorings beam-ends, stirrup spacing is 10 centimetres, and in the range of interlude, stirrup spacing is 15 lis Rice.
(2)Abutment:
Abutment adopts Integral Abutment structure, and Integral Abutment structure is by vertical type lighter pier 21 and integral type foundation 22 It is vertically connected with composition, Extended chemotherapy of the integral type foundation for monolayer complete board type.
Due to 10 meters of dark spanning footpaths it is larger, it is higher to the requirement for bearing capacity of ground, therefore adopt integral type foundation.
The clear span of dark bridge is 10 meters, and the bridge pier platform cap on both sides is used to support the supporting surface width of floorings 1 to be respectively 0.48 meter, anchor bolts are used between the hinge seam of floorings 1 and bridge pier platform cap, the asphalt felt of 1 cm thick is set on bridge pier platform cap.Bridge floor 10.5 meters of the calculating across footpath of plate 1.The height of integral type foundation 22 is 120 centimetres, 55 centimetres of flap hem width degree.
3 meters, 3.5 meters, 4.5 meters, 5 meters of the height of vertical type lighter pier point, is adapted to the requirement of the various headroom that are open to traffic.Uprightly 0.8 meter of the thickness of formula lighter pier, using C30 armored concrete, main stress bar diameterφ16.Integral type foundation 22 is adopted C25 concrete, is designed by flexible foundation, main stress bar diameterφ25,10 centimetres of spacing.
(3)Ground:
With embodiment 1, ground selects sandstone pilework.

Claims (5)

1. a kind of dark bridge of employing sand-gravel pile integral type foundation structure, including floorings(1), abutment(2)And ground(3)Three portions Point, floorings(1)With abutment(2)On bridge pier platform cap connection, set connection bed course, abutment on bridge pier platform cap(2)Lower section is ground (3), it is characterised in that
Floorings(1)Using reinforced concrete hollow slab or/and the structure of solid slab, floorings(1)Upper end level is mated formation reinforcing bar Concrete;
Abutment(2)Basis be monolithic construction;
Ground(3)Using sandstone pilework, the arranged of sand-gravel pile is in whole floorings(1)Lower section and area be more than bridge floor Plate(1);
Floorings(1)Be with hinge seam precoated plate, floorings(1)Hinge seam and bridge pier platform cap between use anchor bolts;
Abutment(2)By both sides vertical type lighter pier(21)And integral type foundation(22)It is vertically connected with composition.
2. the dark bridge of a kind of employing sand-gravel pile integral type foundation structure according to claim 1, it is characterised in that
The across footpath of dark bridge is 5 meters, floorings(1)Plate is a width of 1.49 meters, and plate hight is divided into four kinds, is respectively:Bridge floor top of the plate is banketed height When spending 0.5~3 meter, plate hight is adopted for 0.35 meter of solid slab;During 3~5 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.45 meter Circular hole cored slab;During 5~7 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.60 meter of square-hole hollow plate;Bridge floor top of the plate is banketed height When spending more than 7 meters, plate hight is adopted for 0.8 meter of square-hole hollow plate, in 1 meter of length range of floorings beam-ends, stirrup spacing is 10 lis Rice, in the range of interlude, stirrup spacing is 15 centimetres;
The bridge pier platform cap on both sides is used to support floorings(1)Supporting surface width be respectively 0.48 meter;Vertical type lighter pier Highly divide 3 meters, 3.5 meters, 4.5 meters or 5 meters, 0.7~0.8 meter of the thickness of vertical type lighter pier;Integral type foundation(22)Height Spend for 110 centimetres, 40 centimetres or 50 centimetres of flap hem width degree;
The arranged of sand-gravel pile is:Sand-gravel pile pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
3. the dark bridge of a kind of employing sand-gravel pile integral type foundation structure according to claim 1, it is characterised in that
The across footpath of dark bridge is 6 meters, floorings(1)Plate is a width of 1.49 meters, and plate hight is divided into four kinds, is respectively:Bridge floor top of the plate is banketed height When spending 0.5~3 meter, plate hight is adopted for 0.45 meter of circular hole cored slab;During 3~5 meters of the bridge floor top of the plate depth of fill, adopt plate hight for 0.60 meter of circular hole cored slab;During 5~6 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.75 meter of square-hole hollow plate;Bridge floor top of the plate During more than 6 meters of the depth of fill, plate hight is adopted for 0.9 meter of square-hole hollow plate;Stirrup spacing in 1.2 meters of length ranges of floorings beam-ends For 10 centimetres, in the range of interlude, stirrup spacing is 15 centimetres;
The bridge pier platform cap on both sides is used to support floorings(1)Supporting surface width be respectively 0.48 meter;Vertical type lighter pier Highly divide 3 meters, 3.5 meters, 4.5 meters or 5 meters, 0.7~0.8 meter of the thickness of vertical type lighter pier;Integral type foundation(22)Height Spend for 120 centimetres, 50 centimetres or 55 centimetres of flap hem width degree;
The arranged of sand-gravel pile is:Sand-gravel pile pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
4. the dark bridge of a kind of employing sand-gravel pile integral type foundation structure according to claim 1, it is characterised in that
The across footpath of dark bridge is 8 meters, floorings(1)Plate is a width of 1.49 meters, and plate hight is divided into four kinds, is respectively:Bridge floor top of the plate is banketed height When spending 0.5~2 meter, plate hight is adopted for 0.6 meter of square-hole hollow plate;During 2~3 meters of the bridge floor top of the plate depth of fill, adopt plate hight for 0.75 meter of square-hole hollow plate;During 3~5.5 meters of the bridge floor top of the plate depth of fill, plate hight is adopted for 0.9 meter of square-hole hollow plate;Floorings During 5.5~7 meters of the depth of fill in top, plate hight is adopted for 1.0 meters of square-hole hollow plates, stirrup in 2.2 meters of length ranges of floorings beam-ends Spacing is 10 centimetres, and in the range of interlude, stirrup spacing is 15 centimetres;
The bridge pier platform cap on both sides is used to support floorings(1)Supporting surface width be respectively 0.48 meter;Vertical type lighter pier Highly divide 3 meters, 3.5 meters, 4.5 meters or 5 meters, 0.7~0.8 meter of the thickness of vertical type lighter pier;Integral type foundation(22)Height Spend for 120 centimetres, 60 centimetres of flap hem width degree;
The arranged of sand-gravel pile is:Sand-gravel pile pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
5. the dark bridge of a kind of employing sand-gravel pile integral type foundation structure according to claim 1, it is characterised in that
The across footpath of dark bridge is 10 meters, floorings(1)Plate is a width of 1.49 meters, during 0.5~3 meter of the bridge floor top of the plate depth of fill, using plate A height of 0.9 meter of square-hole hollow plate, in 2.2 meters of length ranges of floorings beam-ends, stirrup spacing is 10 centimetres, is bound round in the range of interlude Muscle spacing is 15 centimetres;
The bridge pier platform cap on both sides is used to support floorings(1)Supporting surface width be respectively 0.48 meter;Vertical type lighter pier Highly divide 3 meters, 3.5 meters, 4.5 meters or 5 meters, 0.8 meter of the thickness of vertical type lighter pier;Integral type foundation(22)Height be 120 centimetres, 55 centimetres of flap hem width degree;
The arranged of sand-gravel pile is:Sand-gravel pile pilespacing is 3~4.5 times of sand-gravel pile stake footpaths.
CN201620695632.9U 2016-07-05 2016-07-05 Adopt integral foundation structure's of grit stake dark bridge Active CN206127853U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107268465A (en) * 2017-08-03 2017-10-20 中铁第勘察设计院集团有限公司 Deep embeded type stake, compound contignation and its construction method of culvert are set in karst region

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107268465A (en) * 2017-08-03 2017-10-20 中铁第勘察设计院集团有限公司 Deep embeded type stake, compound contignation and its construction method of culvert are set in karst region

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