CN209162870U - A kind of bridge tower composite foundation suitable for deep water soft clay area - Google Patents
A kind of bridge tower composite foundation suitable for deep water soft clay area Download PDFInfo
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- CN209162870U CN209162870U CN201821711425.3U CN201821711425U CN209162870U CN 209162870 U CN209162870 U CN 209162870U CN 201821711425 U CN201821711425 U CN 201821711425U CN 209162870 U CN209162870 U CN 209162870U
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- reinforced concrete
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- foundation
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000004927 clay Substances 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 33
- 230000003628 erosive effect Effects 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000009424 underpinning Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 28
- 238000000034 method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 241000316770 Deschampsia cespitosa var. alpina Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Foundations (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a kind of bridge tower composite foundations suitable for deep water soft clay area, it is characterised in that: the bridge tower composite foundation includes: driven pile (4), bed course (6), erosion control brush layer (5), precast caisson (3), king-post；The king-post includes two steel reinforced concrete combinatorial cylinders (2) at a distance of arrangement, it is connected with each other between the top of steel reinforced concrete combinatorial cylinders (2) by crossbeam (1), the bottom part of the steel reinforced concrete combinatorial cylinders (2) is located in the precast caisson (3) and has common bottom plate；Bridge pier is used to support at the top of the steel reinforced concrete combinatorial cylinders (2)；The steel reinforced concrete combinatorial cylinders (2) are made of the concrete between outer steel cylinder, interior steel cylinder and inside and outside steel cylinder.The utility model overcomes the major defect that large diameter borehole pile foundation or well foundation are applied in bridge deepwater foundation field, and rigidity is big, bearing capacity height, good economy performance, and speed of application is fast.
Description
Technical field
The utility model belongs to science of bridge building field, and in particular to bridge tower deep water foundation, it is especially a kind of to be suitable for deep water
The bridge tower composite foundation of soft clay area.
Background technique
With the rapid development of the national economy, transport development demand surges, is building both at home and abroad and preparing to build big
Type bridge is more and more, and with the appearance of bridge spanning the sea, span of bridge is increasing.These length, big bridge mostly use suspension cable
Bridge, is built on the anxious big rivers of the depth of water, stream or the sea of bad environments, often encounter the depth of water compared with deep, coating soil property is poor,
Very big etc. problems are washed away, bridge construction is highly detrimental to, the difficulty that basis is built is also bigger.The construction cost of bridge substructure
30% or more of bed rearrangement bridge investment is typically constituted from, is an important factor for influencing bridge economic.
Large diameter borehole pile foundation or well foundation existing at present is applied in the depth of water compared with deep, coating soil property is poor
In inland river, marine environment, it is primarily present following problems:
1, high-rise pile cap Bored Pile Foundation, scour depth is deep, drift is big, and lateral rigidity is low, for Longspan Bridge
Under the horizontal force actions such as flow force, wave force, anticollision power, generally require using extensive major diameter High-Rise Pile Cap Foundation, base
Plinth scale is big, long construction period, deficiency in economic performance.Construction needs putting up platform, steel pile casting inserting piling, steel cofferdam etc., interim to assist
Engineering is more, and working procedure is complicated.
2, whole caisson basis, good integrity, bearing capacity is big, but needs the works such as steel open caisson transportation by driving, accurate positioning, suck sediment subsidence
Sequence, working procedure is more, and the period is long, and construction risk is high, and in the poor situation of coating soil property, well sinking is easy to happen prominent
It is heavy.
Utility model content
For being built in the depth of water inland river poor compared with deep, coating soil property, the bridge tower deep water foundation in marine environment, it is big straight
Diameter Bored Pile Foundation or well foundation face some problems, at least one in prior art the above defects or improvement requirements
Kind, the utility model provides a kind of bridge tower composite foundation suitable for deep water soft clay area, and soil rigidity is big, water flow adaptability
The flow force and wave force that good, structure is born are small, reduce basic scale, while construction efficiency is high, safety is good, positioning sinking
Simply, operation is easy, construction quality is easy to control, construction risk is low, and construction investment is small, is applicable to the depth of water is relatively deep, covering
The bridge tower deep water foundation built in the poor inland river of layer soil property, marine environment.
To achieve the above object, it according to the one aspect of the utility model, provides a kind of suitable for deep water soft clay area
Bridge tower composite foundation, the bridge tower composite foundation includes: driven pile, bed course, erosion control brush layer, precast caisson, king-post；
The driven pile is at least partially disposed in Soft Soil Layer, is the pile foundation group being made of several pile foundations；
For the setting cushion on the underpinning of the driven pile top, the stake top of the driven pile is pierced into the pad
Layer, bed course includes different material layer from bottom to up；
The precast caisson is set on the bed course, and the laying range of bed course is greater than the peripheral ruler of the precast caisson
It is very little；
The erosion control brush layer is set on the bed course, the periphery of the precast caisson；
The king-post includes two steel reinforced concrete combinatorial cylinders at a distance of arrangement, passes through crossbeam between the top of steel reinforced concrete combinatorial cylinders
It is connected with each other, the bottom part of the steel reinforced concrete combinatorial cylinders is located in the precast caisson and has common bottom plate；The steel
Bridge pier is used to support at the top of mixed combinatorial cylinders；The steel reinforced concrete combinatorial cylinders are by outer steel cylinder, interior steel cylinder and inside and outside steel
Concrete between cylinder is constituted.
Preferably, the driven pile uses steel pipe pile foundation or prefabricated tube caisson foudations.
Preferably, the bed course sequentially consists of anti-filter sand bed, pebble layer, metalling.
Preferably, the precast caisson uses circular cross-section.
Preferably, the laying range of the bed course is that the precast caisson of additional prearranged multiple around the precast caisson is straight
Diameter.
Preferably, the precast caisson uses reinforced concrete structure, the steel box section of the precast caisson and the steel
Outer steel cylinder, the interior steel cylinder of mixed combinatorial cylinders are integral prefabricated structure.
Preferably, multiple tracks stiffening ring is vertically equally spaced in steel cylinder in the steel reinforced concrete combinatorial cylinders.
Preferably, the thickness of the erosion control brush layer be greater than the bed course thickness and be less than the precast caisson height.
Above-mentioned preferred feature can be combined with each other as long as they do not conflict with each other.
In general, have the above technical solutions conceived by the present invention are compared with the prior art, with following
Beneficial effect:
1, the utility model provides a kind of completely new bridge tower deep water base rationally, economic in bridge field for Bridge Design person
Plinth form, the flow force and wave force that soil rigidity is big, water flow adaptability is good, structure is born are small, reduce basic scale, simultaneously
Construction efficiency is high, safety is good, positioning sinking is simple, operation is easy, construction quality is easy to control, construction risk is low, and engineering is thrown
It provides small, is applicable to the bridge tower deep water foundation built in the depth of water inland river poor compared with deep, coating soil property, marine environment.
2, precast caisson uses circular cross-section, and water flow adaptability is good, and local scouring depth is small.
3, the flow force and wave force that structure is born are small.
4, using Driven-in Pile Foundations, existing weak soil is reinforced, rigid pile composite foundation is formed, increases existing foundation soil
Bearing capacity improves basic scour resistance.
5, bed course is arranged between caisson and driven pile can be improved foundation bearing capacity, improve basic anti-seismic performance.
6, erosion control brush layer is set around caisson, can further improve basic scour resistance.
7, caisson uses reinforced concrete structure, and king-post uses steel reinforced concrete combinatorial cylinders, pours, can reduce after cylinder inner concrete
Foundation structure launching weight reduces transportation by driving difficulty.
8, it is vertically equally spaced multiple tracks stiffening ring in steel reinforced concrete combinatorial cylinders, increases king-post local stiffness and entirety in water and holds
Carry power.
8, basic lateral rigidity is big, and horizontal force resistant is strong, and horizontal displacement is small, is very suitable for the bridge that deep water soft clay area is built
Tower foundation.
10, driven pile is constructed using large-scale pile driving barge, and precast caisson can be in dock or land is integral prefabricated, is lauched
At transportation by driving to bridge site, water filling positioning sinking to designed elevation.Whole process construction efficiency is high, safety is good, and process flow is simple,
Operation is easy, and construction quality is easy to control, and construction risk is low.
11, compared with pile foundation, soil rigidity is big, cubic amount of concrete saves, anti-ship hits ability by force and does not need large-scale lead
The interim construction auxiliary equipment such as pipe support；Compared with whole large-scale well-sinking, long-time suck sediment subsidence is not needed, short construction period,
Construction risk is small, scour resistance is good.
Detailed description of the invention
Fig. 1 is the front elevation view of the bridge tower composite foundation suitable for deep water soft clay area of the utility model；
Fig. 2 is the side view of the bridge tower composite foundation suitable for deep water soft clay area of the utility model；
Fig. 3 is the caisson schematic cross-sectional view in Fig. 1 at 1-1 section；
Fig. 4 is the steel reinforced concrete combinatorial cylinders sectional schematic diagram in Fig. 1 at 2-2 section；
Fig. 5 is the partial schematic diagram in Fig. 4 at I-I section；
Fig. 6 is the full-page proof schematic diagram in Fig. 4 at II.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.With reference to embodiment to this
Utility model is further described.
As shown in figures 1 to 6, the bridge tower composite foundation suitable for deep water soft clay area of the utility model, the bridge tower are compound
Basis includes: driven pile 4, bed course 6, erosion control brush layer 5, precast caisson 3, king-post.
The driven pile 4 is at least partially disposed in Soft Soil Layer, is the pile foundation group being made of several pile foundations.As shown in Figs. 1-2,
The driven pile 4 uses steel pipe pile foundation or prefabricated tube caisson foudations.Using Driven-in Pile Foundations, existing weak soil is reinforced,
Rigid pile composite foundation is formed, existing bearing capacity of foundation slab is increased, improves basic scour resistance.
The bed course 6 is layed on the 4 top underpinning of driven pile, overall thickness 3m, the stake top of the driven pile 4
It is pierced into 1m in the bed course 6, bed course is arranged between caisson and driven pile can be improved foundation bearing capacity, improve basic anti-seismic performance.
Bed course includes different material layer from bottom to up.The bed course 6 sequentially consists of 50cm thickness anti-filter sand bed, 2m thickness diameter
The pebble layer of 10cm~80cm, the metalling of 50cm thickness.
The precast caisson 3 is set on the bed course 6, and the laying range of bed course 6 is greater than the outer of the precast caisson 3
Enclose size.
As shown in Figure 1,3, the precast caisson 3 uses circular cross-section.Water flow adaptability is good, and local scouring depth is small；Knot
The flow force and wave force that structure is born are small.Preferably, the laying range of the bed course 6 is additional around the precast caisson 3
The precast caisson diameter of 0.1-0.2 multiple.Preferably, the precast caisson 3 uses reinforced concrete structure, the precast caisson
The outer steel cylinder of 3 steel box section and the steel reinforced concrete combinatorial cylinders 2, interior steel cylinder are integral prefabricated structure, can reduce basic knot
Structure launching weight reduces transportation by driving difficulty.Whole process construction efficiency is high, safety is good, and process flow is simple, and operation is easy, and applies
Working medium amount is easy to control, and construction risk is low.
Preferably, multiple tracks stiffening ring 7 is vertically equally spaced in the steel reinforced concrete combinatorial cylinders 2 in steel cylinder, is increased in water
King-post local stiffness and total bearing capacity.
The erosion control brush layer 5 is set on the bed course 6, the periphery of the precast caisson 3.Preferably, the erosion control
The thickness of brush layer 5 be greater than the bed course 6 thickness and be less than the precast caisson 3 height.Erosion control brush layer is set around caisson,
It can further improve basic scour resistance.
The king-post includes two steel reinforced concrete combinatorial cylinders 2 at a distance of arrangement, passes through cross between the top of steel reinforced concrete combinatorial cylinders 2
Beam 1 is connected with each other, and the bottom part of the steel reinforced concrete combinatorial cylinders 2 is located in the precast caisson 3 and has common bottom plate；Institute
The top for stating steel reinforced concrete combinatorial cylinders 2 is used to support bridge pier；The steel reinforced concrete combinatorial cylinders 2 be by outer steel cylinder, interior steel cylinder and
Concrete between inside and outside steel cylinder is constituted.
Compared with pile foundation, soil rigidity is big, cubic amount of concrete saves, anti-ship hits ability by force and do not need large-scale conduit
The interim construction auxiliary equipment such as frame；Compared with whole large-scale well-sinking, long-time suck sediment subsidence is not needed, short construction period is applied
Work risk is small, scour resistance is good.
To achieve the above object, it according to the other side of the utility model, provides one kind and is suitable for as previously described
The construction method of the bridge tower composite foundation of deep water soft clay area, includes the following steps:
(1) it excavated using large dredger slope, flatten water-bed foundation pit, utilize pile driving barge inserting piling driven pile 4, such as steel pipe
Stake or prefabricated tubing string；
(2) 3m hassock layer 6 is laid on the basis after 4 top of driven pile reinforces using ship；
(3) the outer steel cylinder of the steel box section of precast caisson 3 and steel reinforced concrete combinatorial cylinders 2, interior steel cylinder in dock or
Land is integral prefabricated, is lauched at transportation by driving to bridge site, water filling positioning sinking to designed elevation, after sinking in place in steel tank body
Pouring concrete after between inside and outside steel cylinder；
(4) the erosion control brush layer 5 around ship dumping construction precast caisson 3 is utilized；
(5) superstructure constructed including bridge pier on the top of steel reinforced concrete combinatorial cylinders 2.
In general, the utility model has fully absorbed the advantage and disadvantage on domestic and international existing basis, in conjunction with current both at home and abroad
Matching equipment provides a kind of completely new compound deep water foundation form of bridge tower rationally, economic for Bridge Design person, overcomes big
The major defect that diameter bores pile foundation or well foundation are applied in bridge deepwater foundation field, the utility model soil rigidity
Greatly, the flow force and wave force that water flow adaptability is good, structure is born are small, reduce basic scale, while construction efficiency is high, safety
Property it is good, positioning sinking is simple, operation is easy, construction quality is easy to control, construction risk is low, construction investment is small, and basis is lateral rigid
Degree is big, and horizontal force resistant is strong, and horizontal displacement is small, is very suitable in the depth of water inland river poor compared with deep, coating soil property, marine environment
In the bridge tower deep water foundation built.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of bridge tower composite foundation suitable for deep water soft clay area, it is characterised in that: the bridge tower composite foundation includes: to beat
Enter stake (4), bed course (6), erosion control brush layer (5), precast caisson (3), king-post；
The driven pile (4) is at least partially disposed in Soft Soil Layer, is the pile foundation group being made of several pile foundations；
The bed course (6) is layed on the underpinning of the driven pile (4) top, and the stake top of the driven pile (4) is pierced into institute
It states bed course (6), bed course includes different material layer from bottom to up；
The precast caisson (3) is set on the bed course (6), and the laying range of bed course (6) is greater than the precast caisson (3)
Outside Dimensions；
The erosion control brush layer (5) is set on the bed course (6), the periphery of the precast caisson (3)；
The king-post includes two steel reinforced concrete combinatorial cylinders (2) at a distance of arrangement, passes through cross between the top of steel reinforced concrete combinatorial cylinders (2)
Beam (1) is connected with each other, and the bottom part of the steel reinforced concrete combinatorial cylinders (2) is located in the precast caisson (3) and has jointly
Bottom plate；Bridge pier is used to support at the top of the steel reinforced concrete combinatorial cylinders (2)；The steel reinforced concrete combinatorial cylinders (2) are by outer steel cylinder, interior
Concrete between steel cylinder and inside and outside steel cylinder is constituted.
2. being suitable for the bridge tower composite foundation of deep water soft clay area as described in claim 1, it is characterised in that:
The driven pile (4) uses steel pipe pile foundation or prefabricated tube caisson foudations.
3. being suitable for the bridge tower composite foundation of deep water soft clay area as described in claim 1, it is characterised in that:
The bed course (6) sequentially consists of anti-filter sand bed, pebble layer, metalling.
4. being suitable for the bridge tower composite foundation of deep water soft clay area as claimed in claim 3, it is characterised in that:
The precast caisson (3) uses circular cross-section.
5. being suitable for the bridge tower composite foundation of deep water soft clay area as claimed in claim 4, it is characterised in that:
The laying range of the bed course (6) is the precast caisson diameter of additional prearranged multiple around the precast caisson (3).
6. being suitable for the bridge tower composite foundation of deep water soft clay area as claimed in claim 5, it is characterised in that:
The precast caisson (3) uses reinforced concrete structure, the steel box section of the precast caisson (3) and steel reinforced concrete combination
Outer steel cylinder, the interior steel cylinder of cylinder (2) are integral prefabricated structure.
7. being suitable for the bridge tower composite foundation of deep water soft clay area as described in claim 1, it is characterised in that:
Multiple tracks stiffening ring (7) are vertically equally spaced in the interior steel cylinder of steel reinforced concrete combinatorial cylinders (2).
8. being suitable for the bridge tower composite foundation of deep water soft clay area as described in claim 1, it is characterised in that:
The thickness of the erosion control brush layer (5) be greater than the bed course (6) thickness and be less than the precast caisson (3) height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821711425.3U CN209162870U (en) | 2018-10-22 | 2018-10-22 | A kind of bridge tower composite foundation suitable for deep water soft clay area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821711425.3U CN209162870U (en) | 2018-10-22 | 2018-10-22 | A kind of bridge tower composite foundation suitable for deep water soft clay area |
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| Publication Number | Publication Date |
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| CN209162870U true CN209162870U (en) | 2019-07-26 |
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| CN201821711425.3U Withdrawn - After Issue CN209162870U (en) | 2018-10-22 | 2018-10-22 | A kind of bridge tower composite foundation suitable for deep water soft clay area |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356186A (en) * | 2018-10-22 | 2019-02-19 | 中铁第四勘察设计院集团有限公司 | A kind of bridge tower composite foundation and construction method suitable for deep water soft clay area |
| CN111733799A (en) * | 2020-06-10 | 2020-10-02 | 合肥工业大学 | Forming method for self-wall-protection large-diameter concrete hollow pipe column foundation |
| CN115450244A (en) * | 2022-08-30 | 2022-12-09 | 安徽工业大学 | Novel composite pile bridge anti-seismic foundation for soft soil area and construction method thereof |
-
2018
- 2018-10-22 CN CN201821711425.3U patent/CN209162870U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356186A (en) * | 2018-10-22 | 2019-02-19 | 中铁第四勘察设计院集团有限公司 | A kind of bridge tower composite foundation and construction method suitable for deep water soft clay area |
| CN109356186B (en) * | 2018-10-22 | 2024-03-15 | 中铁第四勘察设计院集团有限公司 | Bridge tower composite foundation applicable to deep water soft soil areas and construction method |
| CN111733799A (en) * | 2020-06-10 | 2020-10-02 | 合肥工业大学 | Forming method for self-wall-protection large-diameter concrete hollow pipe column foundation |
| CN115450244A (en) * | 2022-08-30 | 2022-12-09 | 安徽工业大学 | Novel composite pile bridge anti-seismic foundation for soft soil area and construction method thereof |
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