CN104674645A - Integral plate type small bridge and culvert combination applicable to soft soil foundations - Google Patents
Integral plate type small bridge and culvert combination applicable to soft soil foundations Download PDFInfo
- Publication number
- CN104674645A CN104674645A CN201510054497.XA CN201510054497A CN104674645A CN 104674645 A CN104674645 A CN 104674645A CN 201510054497 A CN201510054497 A CN 201510054497A CN 104674645 A CN104674645 A CN 104674645A
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- bridge
- whole plate
- integral plate
- culvert
- plate base
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an integral plate type small bridge and culvert combination applicable to soft soil foundations. The integral plate type small bridge and culvert combination comprises an integral plate foundation. The integral plate foundation is made of integral reinforced concrete plates, and cut-off walls with depths equal to or larger than 1m are arranged at intersection water-face ends of bottom plates and a river channel; a bridge pier is fixedly combined with the integral plate foundation; bridge abutments are fixedly combined with the integral plate foundation; plate beams are mounted on the bridge pier and the bridge abutments; ear walls are fixedly combined with the integral plate foundation and the bridge abutments, and slopes along side slopes of the river channel are arranged at the bottoms of the ear walls; retaining walls are independently arranged at the rears of the ear walls; one end of each lapping plate is arranged on a back wall of the corresponding bridge abutment via anchor bars, and other portions of the lapping plates are arranged on road bases at the rears of the bridge abutments. The integral plate type small bridge and culvert combination has the advantages that problems of low bearing capacity and high constructional difficulty of existing soft soil foundations can be solved, creeping paths of the soft soil foundations at bridge heads towards a river bed can be blocked, bumping of the bridge heads due to creeping and settling can be improved to a great extent, and the main problem of server bumping of existing bridge heads due to the fact that existing commonly used expanded foundations are excessively unevenly settled and the rears of pile foundation platforms are continuously settled can be basically solved.
Description
Technical field
The invention belongs to bridge technology field, relate to a kind of complete board type small culvert of applicable soft foundation.
Background technology
Soft foundation is liquid-plastic state, there is the features such as water content is large, compressibilty large, bad hydraulic permeability, mechanical strength are low, easy creep is slided, the weak soil of foundation bottom easily produces larger sedimentation and differential settlement, there is great harmfulness to bridge construction, if dealt with improperly, will foundation instability be caused, affect bridge to use, and even bridge is thoroughly scrapped.Existing bridge on soft foundation, because its structural design has defect, its globality is bad, and the time has been grown, due to the depression of ground easily cause bridge head to jump car, platform before landslide, pile displatement, shrinkage joint destroy, the multinomial disease such as the easy landslide of construction.
Summary of the invention
The object of this invention is to provide a kind of complete board type small culvert of applicable soft foundation, owing to adopting the whole plate base of shallow-layer, not only solve the low bearing capacity of soft base and the large problem of difficulty of construction, and blocked the approach that Soft Foundation at Bridge Head wriggles to direction, riverbed, end of the bridge jumps car situation because of creep settlement is also greatly improved, continue after substantially solving the excessive and pile foundation platform of now conventional Extended chemotherapy differential settlement to sink cause end of the bridge seriously to jump the subject matter of car.
The technical solution adopted in the present invention is, a kind of complete board type small culvert of applicable soft foundation, comprises whole plate base, and whole plate base adopts integral reinforced concrete plate, base plate crossing with river course hold near water to establish be not less than the dark cut-off wall of 1m; Bridge pier and whole plate base consolidation; Abutment and whole plate base consolidation; Plate-girder is arranged on bridge pier and abutment; Ear wall and whole plate base and abutment consolidation, bottom arranges the slope along Channel slope; Barricade is independent after ear wall to be arranged; Attachment strap one end is placed on abutment parados by dowel, and remainder to be all placed on after platform on roadbed.
Feature of the present invention is also, whole plate base generally adopts the whole plate of steel concrete that 40cm is thick, bottom whole plate base, and the concrete cushion of paving 30cm hill soil aggregate and cast-in-place 10cm.
Pile foundation of the present invention adopts integrated connection armored concrete slab, solve the problem of soft base low bearing capacity, prevent the Continuous Settlement that Bridgehead by Blastig produces because of soft soil creep, simultaneously by the soil pressure of whole plate balance end of the bridge both sides, the cut-off wall of side can prevent river to emptying bottom whole plate near water.The sloping ear wall in bottom is set after platform, is conducive to reducing excavated volume and difficulty of construction, reduces cave in accident, decrease the soil pressure suffered by ear wall simultaneously.As required, the retaining wall of shallow embedding can be established after ear wall, to reduce excavated volume.As required, attachment strap can be established at end of the bridge, after alleviating platform, jump car.
The invention has the beneficial effects as follows, because bridge pier and abutment adopts whole plate base, make bridges and culverts entirety firm, using function greatly improves.Its major advantage: 1. sedimentation is little, culvert structure gravity and load force itself affect without additional force the soil under the whole plate in basis, and also without sedimentation, field data also demonstrate that this point, both sides roadbed is contained relatively instead has downward trend, illustrates that to contain subsoil base stressed not as large bottom roadbed; 2. shallow excavation, easily construct, reduce cave in accident; 3. structure is simple; 4. the duration is short, and speed is fast, within 1 ~ 2 month, can complete construction; 5. arrangement of reinforcement is less; 6. low cost; 7. anti-seismic performance is fine, and whole plate base embeds in soil, and pier body drift is little, and top is light, and seismic forces is little, and the basis of pier upper and lower part and plate-girder mutually support and form entirety, and total is in length and breadth to bearing very large horizontal force; Bumping at bridge-head greatly alleviates, and owing to eliminating the approach of end of the bridge to korneforos creep, adds transition slab at bridge head simultaneously, adopts the problem that this solves the most headache of soft bridge, i.e. problem of bumping at bridge-head.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1. whole plate base, 2. bridge pier, 3. abutment, 4. plate-girder, 5. ear wall, 6. barricade, 7. attachment strap.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The complete board type small culvert of a kind of applicable soft foundation of the present invention, structure as shown in Figure 1, comprises whole plate base 1, and whole plate base 1 adopts integral reinforced concrete plate, base plate crossing with river course hold near water to establish be not less than the dark cut-off wall of 1m; Bridge pier 2 and whole plate base 1 consolidation; Abutment 3 and whole plate base 1 consolidation; Plate-girder 4 is arranged on bridge pier 2 and abutment 3; Ear wall 5 and whole plate base 1 and abutment 3 consolidation, bottom arranges the slope along Channel slope; Barricade 6, in ear wall 5 independent setting below; Attachment strap 7, one end is placed on abutment 3 parados by dowel, and remainder to be all placed on after platform on roadbed.
The present invention is a kind of complete board type small culvert of applicable soft foundation, implementation step: set two cofferdam in bridges and culverts both sides, to draining desilting in river course in cofferdam; After digging design elevation, paving 30cm hill soil aggregate, reproduces the concrete cushion watering 10cm; On bed course, the whole plate base reinforcing bar of colligation, builds whole plate base; Colligation pier, platform reinforcing bar on whole plate base, build bridge pier, abutment and ear wall; Build barricade after platform; Bridge pier, abutment upper berth 1cm asphaltic felt, install prefabricated or cast-in-situ reinforced concrete slab beam; Back-filling in layers hill soil after platform, and tamp; Build deck paving, sidewalk and railing is installed; Build attachment strap.Because bridge pier, abutment and whole plate base form entirety, design along Channel slope is set bottom ear wall, makes bridges and culverts entirety firm, construct simple and direct, engineering quantity and engineering cost are greatly thrifty, and construction costs only has 1/4 ~ 1/2 of current conventional Extended chemotherapy bridge or pile foundation bridges and culverts structure.
Abutment, bridge pier, ear wall form entirety with basis, again by the support of top plate-girder, whole bridges and culverts is made to form an overall frame construction, the huge soil pressure in end of the bridge both sides has been cancelled out each other by the transmission of whole plate base and top plate-girder, and total is in length and breadth to the internal force also can born very large horizontal force and inhomogeneous deformation and produce.Total has the function of good creep resistant, anti-differential settlement, and complete board type small culvert is sturdy and durable, it is simple and direct to construct, and its engineering quantity and construction costs are compared with other bridge type, all greatly thrifty.
Whole plate base is embedding more shallow, 30cm ~ 50cm below underlying top surface absolute altitude at the bottom of riverbed; Ear wall bottom design is along the slope of Channel slope; The shallow embedding barricade of separation is established after ear wall.Above-mentioned feature can reduce excavated volume to greatest extent, also just better solves a series of difficult problems such as duration, expense, difficulty, cave in accident.
Case 1:
Construction East Road tractor-ploughing bridge in Lianyungang in 2003 adopts 3 across the whole plate base plate girder bridge of 5.6m, construction costs only 500,000 yuan, be open to traffic 11 years, result of use is fine, cost only has one across 1/4 of 20m pile foundation prestressed hollow slab beam bridge cost, and cost only has 3 across 2/5 of 5.6m Extended chemotherapy plate girder bridge cost.After this bridge adopts whole plate base to build, end of the bridge substantially without sedimentation, result of use more than pile foundation prestressed hollow slab beam bridge scheme and Extended chemotherapy plate girder bridge scheme much better.
Case 2:
Jiangsu in 2012 Dong Xin farm 57 group bridge adopts whole plate base scheme cost to only have 260,000 yuan, has been open to traffic 2 years, and result of use is fine, and scheme analysis is a hole 10m pile foundation prestressed hollow slab beam bridge, and cost wants 650,000 yuan.Whole plate base plate girder bridge cost only has 2/5 of pile foundation plate girder bridge cost.End of the bridge is substantially without sedimentation, and result of use is much better more than pile foundation plate girder bridge scheme.
Claims (2)
1. a complete board type small culvert for applicable soft foundation, is characterized in that, comprises whole plate base (1), and whole plate base (1) adopts integral reinforced concrete plate, base plate crossing with river course hold near water to establish be not less than the dark cut-off wall of 1m; Bridge pier (2) and whole plate base (1) consolidation; Abutment (3) and whole plate base (1) consolidation; Plate-girder (4) is arranged on bridge pier (2) and abutment (3); Ear wall (5) and whole plate base (1) and abutment (3) consolidation, bottom arranges the slope along Channel slope; Barricade (6) is in ear wall (5) independent setting below; Attachment strap (7) one end is placed on abutment (3) parados by dowel, and remainder to be all placed on after platform on roadbed.
2. the complete board type small culvert of a kind of applicable soft foundation according to claim 1, it is characterized in that, whole plate base (1) is the whole plate of steel concrete adopting 40cm thick, in whole plate base (1) bottom, and the concrete cushion of paving 30cm hill soil aggregate and cast-in-place 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054497.XA CN104674645A (en) | 2015-02-02 | 2015-02-02 | Integral plate type small bridge and culvert combination applicable to soft soil foundations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054497.XA CN104674645A (en) | 2015-02-02 | 2015-02-02 | Integral plate type small bridge and culvert combination applicable to soft soil foundations |
Publications (1)
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| CN104674645A true CN104674645A (en) | 2015-06-03 |
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| CN201510054497.XA Pending CN104674645A (en) | 2015-02-02 | 2015-02-02 | Integral plate type small bridge and culvert combination applicable to soft soil foundations |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158492A (en) * | 2019-05-21 | 2019-08-23 | 无锡市水利设计研究院有限公司 | A kind of bridges and culverts structure |
| CN110438914A (en) * | 2019-07-01 | 2019-11-12 | 中国葛洲坝集团第一工程有限公司 | Water tank culvert and its construction method are crossed on soft soil foundation |
| CN111576325A (en) * | 2020-05-29 | 2020-08-25 | 中铁六局集团有限公司 | Comprehensive treatment construction method for urban river underpass railway |
| CN113356036A (en) * | 2021-04-23 | 2021-09-07 | 中铁大桥局集团第五工程有限公司 | Cable tower foundation structure combined with bridge abutment and construction method thereof |
| CN113373999A (en) * | 2021-06-23 | 2021-09-10 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
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| JPH1193115A (en) * | 1997-09-22 | 1999-04-06 | Yasuhiro Niizawa | Bridge girder of elevated crossing bridge turning to right |
| CN201095721Y (en) * | 2007-09-06 | 2008-08-06 | 长业建设集团有限公司 | Soft soil foundation porous double suspension arms arched bridge structure |
| CN103225267A (en) * | 2013-03-29 | 2013-07-31 | 天津二十冶建设有限公司 | Construction method of deep and thick soft soil foundation bed bridge abutment |
| CN204080855U (en) * | 2014-09-29 | 2015-01-07 | 中国电建集团中南勘测设计研究院有限公司 | A kind of bridge pier and storehouse bank panel connecting structure |
| CN204589783U (en) * | 2015-02-02 | 2015-08-26 | 淮海工学院 | A kind of complete board type small culvert of applicable soft foundation |
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2015
- 2015-02-02 CN CN201510054497.XA patent/CN104674645A/en active Pending
Patent Citations (5)
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| JPH1193115A (en) * | 1997-09-22 | 1999-04-06 | Yasuhiro Niizawa | Bridge girder of elevated crossing bridge turning to right |
| CN201095721Y (en) * | 2007-09-06 | 2008-08-06 | 长业建设集团有限公司 | Soft soil foundation porous double suspension arms arched bridge structure |
| CN103225267A (en) * | 2013-03-29 | 2013-07-31 | 天津二十冶建设有限公司 | Construction method of deep and thick soft soil foundation bed bridge abutment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158492A (en) * | 2019-05-21 | 2019-08-23 | 无锡市水利设计研究院有限公司 | A kind of bridges and culverts structure |
| CN110158492B (en) * | 2019-05-21 | 2021-01-22 | 无锡市水利设计研究院有限公司 | Bridge and culvert structure |
| CN110438914A (en) * | 2019-07-01 | 2019-11-12 | 中国葛洲坝集团第一工程有限公司 | Water tank culvert and its construction method are crossed on soft soil foundation |
| CN110438914B (en) * | 2019-07-01 | 2021-04-30 | 中国葛洲坝集团第一工程有限公司 | Water passing box culvert on soft soil foundation and construction method thereof |
| CN111576325A (en) * | 2020-05-29 | 2020-08-25 | 中铁六局集团有限公司 | Comprehensive treatment construction method for urban river underpass railway |
| CN113356036A (en) * | 2021-04-23 | 2021-09-07 | 中铁大桥局集团第五工程有限公司 | Cable tower foundation structure combined with bridge abutment and construction method thereof |
| CN113373999A (en) * | 2021-06-23 | 2021-09-10 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
| CN113373999B (en) * | 2021-06-23 | 2023-01-03 | 中铁二局集团建筑有限公司 | Reinforced concrete pipe culvert dredging method |
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Application publication date: 20150603 |
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