CN104911988A - Prefabricated reinforced concrete embedded type upright frame bridge - Google Patents
Prefabricated reinforced concrete embedded type upright frame bridge Download PDFInfo
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- CN104911988A CN104911988A CN201510313345.7A CN201510313345A CN104911988A CN 104911988 A CN104911988 A CN 104911988A CN 201510313345 A CN201510313345 A CN 201510313345A CN 104911988 A CN104911988 A CN 104911988A
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Abstract
The invention discloses a prefabricated reinforced concrete embedded type upright frame bridge. The prefabricated reinforced concrete embedded type upright frame bridge comprises an arch top plate and upright type side edges arranged on two longitudinal sides of the wing wall macadam foundation arch top plate, and wing wall macadam foundation prefabricated reinforced concrete end walls are arranged on two transverse sides of the wing wall macadam foundation arch top plate; the wing wall macadam foundation arch top plate is supported by the upright type side edges on the two longitudinal sides of the wing wall macadam foundation arch top plate, and the wing wall macadam foundation upright type side edges are arranged on a wing wall macadam foundation prefabricated reinforced concrete foundation. Kinds of existing small and medium span bridges and culverts are enriched, internal force of the top of a bridge body can be reduced, and the cross size can be optimized; through mutual effect of the bridge body and soil, upper loads can be dispersed to surrounding soil, and therefore the bearing force of the bridge body can be improved, the stress performance is improved, and the construction cost is reduced; and in addition, all components can be prefabricated in a factory, and field installation is achieved, so that the construction period is reduced, the damage to the environment of the construction site is reduced, and the low-carbon environment-friendly aim is achieved.
Description
Technical field
The present invention relates to Highway Municipal technical field of construction, refer to the embed-type vertical frame bridge of a kind of prefabricated reinforced concrete particularly.
Background technology
Material bridge in current highway and municipal engineering mostly is beam, plated construction, often because the depth of fill and Geological Reasons adopt multi span structure when crossing over small rivers and road, cost high and with terrain environment inaccurate coordination.If adopt little poor across footpath arch bridge economy, construction is complicated and under-clearance loss is more.
Summary of the invention
Object of the present invention is exactly the deficiency that will solve above-mentioned background technology, there is provided a kind of prefabricated reinforced concrete embed-type vertical frame bridge, it is a kind of structural system between beam and arch, be by the structure that combines of lower post entirety by curved superstructure and pressure-bearing, and structure is simple, easy construction, applicability is wide and can reduce costs.
Technical scheme of the present invention is: the embed-type vertical frame bridge of a kind of prefabricated reinforced concrete, comprise the prefabricated reinforced concrete vertical frame body of a bridge, be arranged on the precast reinforced concrete plinth below the prefabricated reinforced concrete vertical frame body of a bridge, be arranged on the precast concrete headwall of prefabricated reinforced concrete vertical frame body of a bridge both lateral sides, Roadbed Soil is piled up in the prefabricated reinforced concrete vertical frame body of a bridge top quilt also compacting between described precast concrete headwall, it is characterized in that: the described prefabricated reinforced concrete vertical frame body of a bridge comprises arch top board and is arranged on the vertical type side of the longitudinal both sides of described arch top board, described precast concrete headwall is arranged on the both lateral sides of described arch top board, described arch top board is by the vertical type lateral support of its longitudinal both sides, described vertical type side is arranged on described precast reinforced concrete plinth.
In such scheme:
The transverse ends of described arch top board is all symmetrical arranged the precast concrete aileron of oriented prefabricated reinforced concrete vertical frame body of a bridge outside extension, the overhead height gradual change of described precast concrete aileron, described precast concrete wing coping highest point flushes with described precast concrete end coping, the bottom of described precast concrete aileron is arranged on aileron crushed rock base course, and the end of described aileron crushed rock base course is arranged on outside the lateral ends of described precast reinforced concrete plinth.
Described aileron crushed rock base course and precast reinforced concrete plinth top are vertically arranged with groove, described precast concrete aileron and vertical type side correspondence are arranged in the longitudinal groove arranged of described aileron crushed rock base course and precast reinforced concrete plinth top, are provided with crushed rock base course bottom described precast reinforced concrete plinth.
Described vertical type side and arch top board are integral frame structure.
The described prefabricated reinforced concrete vertical frame body of a bridge is that slice structure is spliced.
Described prefabricated reinforced concrete aileron is plank frame.
Described prefabricated reinforced concrete headwall medial surface is provided with several steel concrete stiffened ribs.
Described prefabricated reinforced concrete headwall is plank frame, and described prefabricated reinforced concrete headwall top is concordant, is the domes consistent with described arch top board framework bottom described prefabricated reinforced concrete headwall.
The embed-type vertical frame bridge of a kind of prefabricated reinforced concrete of the present invention, enrich the kind of existing Mid and minor spans bridges and culverts, beam body top internal force can be reduced, optimize sectional dimension, and pass through the interaction of beam body and soil, upper load is distributed on the soil body of surrounding, thus improve the bearing capacity of self, improve stress performance, reduce construction cost, each component can be prefabricated in the factory in addition, in-site installation, to reduce construction period, reduce the destruction to job site environment, more aobvious low-carbon environment-friendly.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is the cross-sectional view of Fig. 1;
Fig. 3 is the plan view of Fig. 1;
Fig. 4 is the structural representation of precast reinforced concrete plinth;
Fig. 5 is the structural representation of precast concrete headwall;
Fig. 6 is precast concrete aileron structural representation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The embed-type vertical frame bridge of a kind of prefabricated reinforced concrete of the present embodiment, comprise the prefabricated reinforced concrete vertical frame body of a bridge 1, be arranged on the precast reinforced concrete plinth 2 below the prefabricated reinforced concrete vertical frame body of a bridge 1, be arranged on the precast concrete headwall 4 of the prefabricated reinforced concrete vertical frame body of a bridge 1 both lateral sides, Roadbed Soil is piled up in the prefabricated reinforced concrete vertical frame body of a bridge 1 top between precast concrete headwall 4 and compacting, the prefabricated reinforced concrete vertical frame body of a bridge 1 of the present embodiment comprise for for integral frame structure arch top board 1.1 and be arranged on the vertical type side 1.2 of the longitudinal both sides of arch top board 1.1, precast concrete headwall 4 is arranged on the both lateral sides of arch top board 1.1, arch top board 1.1 is supported by the vertical type side 1.2 of its longitudinal both sides, vertical type side 1.2 is arranged on precast reinforced concrete plinth 2, crushed rock base course 8 is provided with bottom precast reinforced concrete plinth 2.
The prefabricated reinforced concrete embed-type vertical frame bridge of the present embodiment is a kind of a kind of structural system between beam and arch, its agent structure-prefabricated reinforced concrete vertical frame body of a bridge 1 is by the structure combined with lower post-vertical type side 1.2 entirety of pressure-bearing by curved superstructure-arch top board 1.1, arch top board 1.1 is under vertical uniform load q, horizontal thrust can be produced, horizontal thrust makes the moment of flexure at arch top 1.1 greatly reduce, thus can adopt less deck-molding; In addition because structural entity is embedded in the soil body, the horizontal force of vertical type side 1.2 is born by side soil pressure.Because moment of flexure reduces, consequently reduce sectional dimension, the prefabricated reinforced concrete vertical frame body of a bridge 1 can adopt the construction method of segmented precast assembly, convenient and swift.
The transverse ends of the arch top board 1.1 of the present embodiment is all symmetrical arranged the precast concrete aileron 3 of the oriented prefabricated reinforced concrete vertical frame body of a bridge 1 outside extension, prefabricated reinforced concrete aileron 3 adopts plank frame, its overhead height designs for gradual change type, the top highest point of precast concrete aileron 3 flushes with the top of precast concrete headwall 4, the bottom of precast concrete aileron 3 is arranged on aileron crushed rock base course 6, and the end of aileron crushed rock base course 6 is arranged on outside the lateral ends of precast reinforced concrete plinth 2.Under soil pressure effect, precast concrete headwall 4 as above and precast concrete aileron 3 serve the effect of retaining wall, for reducing physical dimension and lifting weight, the principle of reinforced soil retaining wall can be copied, at precast concrete headwall 4 and precast concrete aileron 3, grasp is set behind, with in anchorage cable anchoring backfill rearward, the crack liner plate between precast concrete headwall 4 and precast concrete aileron 3 and filter cloth block, in case seepage of banketing.
The present embodiment is vertically arranged with groove 5 at aileron crushed rock base course 6 and precast reinforced concrete plinth 2 top, precast concrete aileron 3 and vertical type side 1.2 correspondence are arranged in the longitudinal groove 5 arranged of aileron crushed rock base course 6 and precast reinforced concrete plinth 2 top, are provided with crushed rock base course 8 bottom precast reinforced concrete plinth 2.
The prefabricated reinforced concrete vertical frame body of a bridge 1 of the present embodiment is spliced for slice structure: arch top board 1.1 is wherein formed by multiple circular sliding slopes, and the width of arch top board 1.1 and vertical type side 1.2 can be determined across footpath and lifting weight according to structure.
The prefabricated reinforced concrete headwall 4 of the present embodiment is plank frame, prefabricated reinforced concrete headwall 4 top is concordant, be the domes consistent with arch top board 1.1 framework bottom prefabricated reinforced concrete headwall 4, prefabricated reinforced concrete headwall 4 medial surface is provided with several steel concrete stiffened ribs 7, to strengthen structural strength.
The embed-type vertical frame bridge of prefabricated reinforced concrete of the present embodiment is when constructing, and its material adopts the concrete and the reinforcing bar that meet specification, and selectes model according to design drawing; And carry out prefabricated according to the shape and size of component, the outward appearance error of prefabricated structure should meet: exterior contour scale error is no more than 1% of design size and is no more than 3cm, beam body top board scale error is no more than 2cm, and side plate, aileron and headwall scale error are no more than 0.5cm; Prefabrication size error exceedes setting as above and structure occurs that the defective prefabricated component in the crack exceeding code for design of concrete structures permissible value must not be used for next step structure installment.
The field installation steps of prefabricated reinforced concrete vertical frame bridge as above:
1), carry out on-the-spot substrate excavation, compacting guarantees that substrate possesses enough bearing capacities, and carries out crushed rock base course 8 and aileron crushed rock base course 6 is constructed;
2), precast reinforced concrete plinth 2 is installed;
3), burst installs the prefabricated reinforced concrete vertical frame body of a bridge, is arranged in the groove of precast reinforced concrete plinth 2 bottom vertical type side 1.2;
4), prefabricated reinforced concrete aileron 3 and prefabricated reinforced concrete headwall 4 are installed;
5), carry out the consolidation process of the waterproofing work of beam body burst junction and prefabricated reinforced concrete aileron 3, prefabricated reinforced concrete headwall 4 and beam body junction, optional features stiffening rib etc. is installed;
6), the construction of Roadbed Soil;
7), banket above beam body and bridge surface construction;
8), Cheng Qiao.
Compared with the precast plate beam bridge of routine and cast-in-place gate-type bridge, the embed-type vertical frame bridge of prefabricated reinforced concrete has the following advantages:
1, Dun Liang is rigidly connected and arched girder makes beam body moment of flexure significantly reduce, and reduces deck-molding, decreases material usage;
2, vertical type side 1.2 is adopted to obtain larger under-clearance relative to arch bridge;
3, structure is frivolous, and bridge type is attractive in appearance, and bridge downward view is open;
4, segmented component can carry out standardized production in factory, product quality is more easily effectively controlled, the corresponding concrete mixing pouring practice reducing scene, be conducive to construction plant environmental requirement, and lift lightweight, job site can directly be installed, convenient quick again, can shorten the construction period.
For the ease of transport and lifting, this bridge type is unsuitable excessive across footpath, is generally not more than 15m, its main scope of application: Subway Bridge etc. in each standard highway single span Material bridge, each standard highway passage, separate type bridge, each municipal engineering.
Bridge type of the present invention is statically-indeterminate structure, under operation load action, carries out structural internal force calculation and cross-sectional strength checking computations by the supposition of elastic theory.Computational methods are Finite Element, by bridge construction and surrounding soil modeling in the lump, arrange fringe conditions, consider the effect of contraction of side direction soil to bridge.The second inner force that concrete shrinkage and creep and variations in temperature cause combines as permanent load.The industry standard such as design considerations " highway bridge and culvert design general specification ", " highway reinforced concrete and prestressed concrete bridge culvert design specifications ".
Prefabricated reinforced concrete embed-type vertical frame bridge follows following principle when design block part divides: according to conditions such as the transport of bridge construction scene and liftings, determine maximum size and the weight of assembled unit; The division of block part should meet force request, and made up joint should be arranged on internal force smaller part as far as possible; The quantity of made up joint will be lacked, and joint form is solid and reliable, and construction will facilitate; Component to be convenient to prefabricated, transport and install; Under the prerequisite of satisfied lifting weight, strengthen prefabricated component width, to reduce breaking joint number as far as possible.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to structure of the present invention.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical scheme of the present invention.
Claims (8)
1. the embed-type vertical frame bridge of prefabricated reinforced concrete, comprise the prefabricated reinforced concrete vertical frame body of a bridge (1), be arranged on the precast reinforced concrete plinth (2) of the prefabricated reinforced concrete vertical frame body of a bridge (1) below, be arranged on the precast concrete headwall (4) of the prefabricated reinforced concrete vertical frame body of a bridge (1) both lateral sides, Roadbed Soil is piled up in the prefabricated reinforced concrete vertical frame body of a bridge (1) top between described precast concrete headwall (4) and compacting, it is characterized in that: the described prefabricated reinforced concrete vertical frame body of a bridge (1) comprises arch top board (1.1) and is arranged on the vertical type side (1.2) of the longitudinal both sides of described arch top board (1.1), described precast concrete headwall (4) is arranged on the both lateral sides of described arch top board (1.1), described arch top board (1.1) is supported by the vertical type side (1.2) of its longitudinal both sides, described vertical type side (1.2) is arranged on described precast reinforced concrete plinth (2).
2. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 1, it is characterized in that: the transverse ends of described arch top board (1.1) is all symmetrical arranged the precast concrete aileron (3) of the oriented prefabricated reinforced concrete vertical frame body of a bridge (1) outside extension, the overhead height gradual change of described precast concrete aileron (3), the top highest point of described precast concrete aileron (3) flushes with the top of described precast concrete headwall (4), the bottom of described precast concrete aileron (3) is arranged on aileron crushed rock base course (6), the end of described aileron crushed rock base course (6) is arranged on outside the lateral ends of described precast reinforced concrete plinth (2).
3. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 2, it is characterized in that: described aileron crushed rock base course (6) and precast reinforced concrete plinth (2) top are vertically arranged with groove (5), described precast concrete aileron (3) and vertical type side (1.2) correspondence are arranged in the longitudinal groove (5) arranged of described aileron crushed rock base course (6) and precast reinforced concrete plinth (2) top, and described precast reinforced concrete plinth (2) bottom is provided with crushed rock base course (8).
4. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 1, is characterized in that: described vertical type side (1.2) and arch top board (1.1) are integral frame structure.
5. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 1, is characterized in that: the described prefabricated reinforced concrete vertical frame body of a bridge (1) is spliced for slice structure.
6. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 1, is characterized in that: described prefabricated reinforced concrete aileron (3) is plank frame.
7. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 1, is characterized in that: described prefabricated reinforced concrete headwall (4) medial surface is provided with several steel concrete stiffened ribs (7).
8. the embed-type vertical frame bridge of prefabricated reinforced concrete according to claim 1, it is characterized in that: described prefabricated reinforced concrete headwall (4) is plank frame, described prefabricated reinforced concrete headwall (4) top is concordant, and described prefabricated reinforced concrete headwall (4) bottom is the domes consistent with described arch top board (1.1) framework.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510313345.7A CN104911988A (en) | 2015-06-09 | 2015-06-09 | Prefabricated reinforced concrete embedded type upright frame bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510313345.7A CN104911988A (en) | 2015-06-09 | 2015-06-09 | Prefabricated reinforced concrete embedded type upright frame bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747903A (en) * | 2019-10-28 | 2020-02-04 | 湖北建科国际工程有限公司 | Porous frame bridge and assembling construction method thereof |
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| KR20080114297A (en) * | 2007-06-27 | 2008-12-31 | 조성인 | Arch bridge and method of constructing the bridge in brook |
| CN103114520A (en) * | 2013-03-13 | 2013-05-22 | 湖南大学 | Lattice-type large-span soil-filling composite corrugated steel arch bridge structure |
| CN203270436U (en) * | 2013-05-28 | 2013-11-06 | 东莞理工学院 | Light anti-bending supporting member based on FRP and flexible arch body |
| US20140090191A1 (en) * | 2011-07-08 | 2014-04-03 | Scott D. Aston | Foundation system for bridges and other structures |
| CN204803740U (en) * | 2015-06-09 | 2015-11-25 | 中交第二公路勘察设计研究院有限公司 | Embed -type upright frame bridge of precast reinforced concrete |
-
2015
- 2015-06-09 CN CN201510313345.7A patent/CN104911988A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080114297A (en) * | 2007-06-27 | 2008-12-31 | 조성인 | Arch bridge and method of constructing the bridge in brook |
| US20140090191A1 (en) * | 2011-07-08 | 2014-04-03 | Scott D. Aston | Foundation system for bridges and other structures |
| CN103114520A (en) * | 2013-03-13 | 2013-05-22 | 湖南大学 | Lattice-type large-span soil-filling composite corrugated steel arch bridge structure |
| CN203270436U (en) * | 2013-05-28 | 2013-11-06 | 东莞理工学院 | Light anti-bending supporting member based on FRP and flexible arch body |
| CN204803740U (en) * | 2015-06-09 | 2015-11-25 | 中交第二公路勘察设计研究院有限公司 | Embed -type upright frame bridge of precast reinforced concrete |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747903A (en) * | 2019-10-28 | 2020-02-04 | 湖北建科国际工程有限公司 | Porous frame bridge and assembling construction method thereof |
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Application publication date: 20150916 |