CN110205914A - A kind of anti-selection structure for arch bridge base - Google Patents
A kind of anti-selection structure for arch bridge base Download PDFInfo
- Publication number
- CN110205914A CN110205914A CN201910497477.8A CN201910497477A CN110205914A CN 110205914 A CN110205914 A CN 110205914A CN 201910497477 A CN201910497477 A CN 201910497477A CN 110205914 A CN110205914 A CN 110205914A
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- China
- Prior art keywords
- straining
- arch bridge
- selection structure
- skewback
- stake
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Classifications
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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
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
- Foundations (AREA)
Abstract
The present invention provides a kind of anti-selection structures for arch bridge base, it is mounted on arch bridge, the arch bridge includes multiple skewbacks, and the anti-selection structure includes multiple straining beams, the straining beam is equipped with one or more and squeezes into the stake of soil body depths, and multiple straining beams are fixed on the inside of at least one skewback.Anti- selection structure of the invention provides a kind of new mode for arch bridge resistance to horizontal thrust, it is not by the influence of topography, in combination with the position of landform flexible arrangement straining beam and stake, by changing the structure of straining beam and the quantity of adjustment stake, the larger range of soil body together resistance to horizontal thrust can more fully be utilized, the case where additionally stress being concentrated to avoid the part soil body for being located at skewback side, the risk of soil body creep is reduced, improves the anti-safety reliability pushed away of skewback.
Description
Technical field
The invention belongs to technical field of bridge engineering, and in particular to a kind of anti-selection structure for arch bridge base.
Background technique
Arch bridge is usually that one kind has thrust structure, is flat because of the Lack of support of ground when building arch bridge in soft base
Weigh horizontal thrust suffered by skewback, and generally multi-column pier foundation, anti-skid plate etc. are anti-to push away measure to the prior art using installing on skewback, or
Elongated straining beam is set between the skewback of span of arch two sides, forms straining beam self equilibrium systems to bear horizontal thrust.In the straining beam
In self equilibrium systems, straining beam can bear all or part of horizontal force.
It is above-mentioned the prior art has the following problems: anti-skid plate arrangement is restricted vulnerable to site condition, and its anti-principle that pushes away is benefit
It is resisted strenuously and is pushed away with the frictional resistance between shallow layer foundation soil and anti-skid plate, so the application in Soft Soil Layer is limited.In addition, when arch bridge is crossed over
When the special geomorphologies such as valley, zanjon, for single hole arch bridge, elongated straining beam can not be set between the skewback of two sides；For porous
Arch bridge also can not can not just be formed in this way in main arch across or elongated straining beam is continuously arranged between every two adjacent skewback
Straining beam self equilibrium systems.Therefore, it when multi-column pier foundation is still not enough to provide rationally reliable anti-thrust, is bound to find new arch
Bridge is anti-to push away solution.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of anti-selection structure for arch bridge base, which is enough to resist arch
The horizontal thrust of bridge, and can adapt to the arrangement demand in special place.
The present invention provides a kind of anti-selection structures for arch bridge base, are mounted on arch bridge, the arch bridge includes multiple
Skewback, the anti-selection structure include multiple straining beams, and the straining beam is equipped with one or more and squeezes into the stake of soil body depths, Duo Gesuo
State the inside that straining beam is fixed at least one skewback.
Preferably, one end of the straining beam is fixed on the inside of the skewback, and the other end extends to the middle part of the arch bridge.
Preferably, multiple straining beams are arranged symmetrically about the center line of the arch bridge.
Preferably, the top of the more stakes is fixed on the straining beam along the axis compartment of terrain of the straining beam.
Preferably, the straining beam be hierarchical structure, the hierarchical structure include multilevel by sequence from low to high according to
The secondary beam body being fixedly connected, in two adjacent levels, one or more advanced secondary beam bodies from the end of rudimentary secondary beam body by
Proximad far extend.
Preferably, axisymmetrical of the hierarchical structure about level-one beam body.
Preferably, in two adjacent levels, the area of section of advanced secondary beam body is less than the section face of rudimentary secondary beam body
Product.
Preferably, the straining beam is made of concrete, and internal equipped with reinforcing bar, fashioned iron or drag-line.
Preferably, the stake is prefabricated pile, cast-in-situ bored pile or caisson.
Anti- selection structure of the invention mainly includes straining beam and stake, and straining beam is fixed on skewback, and straining beam is fixed at the top of stake
On.When skewback is by horizontal thrust, straining beam by pulling force and drives stake therewith, and the soil body being tightly distributed in around stake at this time can be right
Stake applies reversed anti-thrust, and stake quantity is more, will have the more large-scale soil body to provide anti-thrust.This anti-selection structure is
Arch bridge resistance to horizontal thrust provides a kind of new mode, not by the influence of topography, in combination with landform flexible arrangement straining beam and stake
Position, by change straining beam structure and adjustment stake quantity, can more fully using the larger range of soil body together
Resistance to horizontal thrust, additionally can to avoid be located at skewback side the part soil body concentrate stress the case where, it is compacted to reduce the soil body
The risk of change improves the anti-safety reliability pushed away of skewback.
Detailed description of the invention
Fig. 1 is that the present invention applies the main view on single hole arch bridge；
Fig. 2 is the top view (removal arch ring) of Fig. 1；
Fig. 3 is that the present invention applies the main view on multiarch bridge；
Fig. 4 is the top view (removal arch ring) of Fig. 3；
Component label instructions:
1 skewback
11 first skewbacks
12 second skewbacks
2 straining beams
21 first straining beams
211 level-one beam bodies
212 second level beam bodies
213 three-level beam bodies
22 second straining beams
31 first arch rings
32 second arch rings
4
5 ground lines
A is parallel to the center line of x-axis direction
B is parallel to the center line in y-axis direction
C is parallel to the center line in z-axis direction
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.These embodiments are only used for
Illustrate the present invention, and not limitation of the present invention.
In the description of the present invention, it should be noted that term "vertical", "horizontal", "top", "bottom" "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
Fig. 1 show the present invention and applies the main view on single hole arch bridge, in the following description, with the attached drawing in Fig. 1
It is outwardly front direction perpendicular to view paper in Fig. 1, after being inwardly perpendicular to view paper as the reference basis in direction
Direction is upper direction along view paper upwards, is downwards lower direction along view paper, along view paper towards right for right direction, edge
View paper is towards left for left direction, wherein definition up and down direction is z-axis, and left and right directions is x-axis, and front-rear direction is y-axis.Right
When other view descriptions, based on the direction determined by Fig. 1.
The present invention provides a kind of anti-selection structure for arch bridge base, which can be applied in single hole or multiarch bridge
On.As shown in Figure 1, single hole arch bridge includes the first arch ring 31 and one group of symmetrically arranged skewback 1, the both ends of the first arch ring 31
It is separately fixed on the two skewbacks 1.The anti-selection structure includes multiple straining beams 2 for being fixed on 1 inside of skewback, and inside here refers to
Be side of the skewback 1 in the middle part of arch bridge, i.e., straining beam 2 is arranged in the opposite direction of horizontal thrust suffered by skewback 1.Each drawing
Beam 2 is equipped with one or more and squeezes into the stake 4 of soil body depths.When skewback 1 is by horizontal thrust, the drawing that is fixed on skewback 1
2 under tension of beam simultaneously drives stake 4, and the soil body around stake at this time 4 can apply reversed anti-thrust to stake 4, and the quantity of stake 4 is more,
Distribution area is bigger, will have the more large-scale soil body to provide anti-thrust.Entire anti-selection structure can be symmetrical structure, about
The center line A of x-axis direction, the center line B for being parallel to y-axis direction and the center line C for being parallel to z-axis direction are parallel in arch bridge
Symmetrically, guarantee the stress balance of arch bridge；It when the place situation locating for two skewbacks 1 is inconsistent, for example is soft soil at one, separately
It is solid rock at one, entire anti-selection structure may be unsymmetric structure, only fixed on the skewback 1 being set in soft soil
Multiple straining beams 2, therefore the quantity of straining beam 2, tilt angle, length and arrangement position on skewback 1 can be according to installations
The soil pattern at scene, soil property, needs etc. of constructing are adjusted.
In one particular embodiment of the present invention, straining beam 2 is made of concrete, and it is internal be equipped with reinforcing bar, fashioned iron or
Drag-line.Stake 4 is born based on horizontal force, and type is unrestricted, and prefabricated pile, cast-in-situ bored pile or caisson etc., and top can be used
It is fixedly connected with straining beam 2.Straining beam 2 can be used conventional member structure, and one end is fixed on the inside of skewback 1, and the other end is to arch bridge
Middle part extend, variable section structure is preferably used, wherein the area of section for being fixed on one end of the inside of skewback 1 is greater than the other end
Area of section, the design of variable cross-section be conducive to save material, mitigate self weight.Multiple stakes 4 are fixed along the axis compartment of terrain of straining beam 2
On straining beam 2.
In view of the stress characteristic of straining beam, straining beam 2 can also further be set as hierarchical structure as shown in Figure 2, should
Hierarchical structure includes the beam body of multilevel being fixedly connected sequentially by sequence from low to high, such as sequentially connected level-one beam body
211, second level beam body 212 and three-level beam body 213.In two adjacent levels, one or more advanced secondary beam bodies are from rudimentary time
The end of beam body is by proximad far extending.As shown in Fig. 2, straining beam 2 includes a level-one beam body 211, the end of level-one beam body 211
One or more second level beam bodies 212 are extended in portion, continue to extend one or more three-levels in the end of each second level beam body 212
Beam body 213, axisymmetrical of the entire hierarchical structure about level-one beam body 211.It is respectively equipped in the beam body of two neighboring level
Stake 4, and the area of section of advanced secondary beam body is less than the area of section of rudimentary secondary beam body.Using hierarchical structure, those skilled in the art
Member is according to condition and needs to determine grade sub-quantity, while in order to obtain enough anti-thrust, by determining in each level beam body
The quantity of the advanced secondary beam body of connection, can reasonably improve 4 quantity of stake connected on every straining beam 2 and distribution area, thus
Substantially effectively thrust suffered by skewback 1 is resisted together using the larger range of soil body.
As shown in Figure 3 and Figure 4, anti-selection structure of the invention is applied on multiarch bridge, and multiarch bridge includes from inside to outside
One group of first skewback 11 and one group of second skewback 12 of arrangement, being arranged on the first skewback 11 is the first straining beam 21, is fixed on
It is the first arch ring 31 (i.e. main arch ring) on two the first skewbacks 11；Being arranged in is the second straining beam 22 on the second skewback 12, Gu
Being scheduled on the first skewback 11 and the second skewback 12 is the second arch ring 32.Before first straining beam 21 and the second straining beam 22 specifically use
The member structure stated, naturally it is also possible to use hierarchical structure above-mentioned.Similarly, apply the anti-arch bridge that pushes away on multiarch bridge can
Think symmetrical structure, unsymmetric structure can also be adjusted to according to the different place situations that multiarch bridge is crossed over.
Anti- selection structure of the invention provides a kind of new mode for arch bridge resistance to horizontal thrust, can both apply flat
Smooth area can also apply in the special geomorphology with zanjon or valley.As shown in figure 3, the first arch ring 31 spans recess
Place, the second arch ring 32 are then located on flat terrain, and those skilled in the art can according to need to be increased and the first skewback with condition
11 4 quantity of stake being connected and distribution area, even if the relatively close recess of the first skewback 11, can also have enough soil bodys to mention
For anti-thrust.And horizontal thrust suffered by the second skewback 12 is relatively small, surrounding soil distribution also it is closer uniformly, therefore with second
4 quantity of stake that skewback 12 is connected can pass through the number of stake 4 on the quantity of the second straining beam 22 of reduction and each second straining beam 22
Amount is accordingly reduced.It can be seen that this anti-selection structure is not by the influence of topography, the position of combinable landform flexible arrangement straining beam and stake
It sets, by changing the structure of straining beam and the quantity of adjustment stake, more fully resists level together using the larger range of soil body
Furthermore thrust can avoid the part soil body positioned at skewback side from concentrating stress by the distributing position and area of change straining beam
The case where, the risk of soil body creep is reduced, the anti-safety reliability pushed away of skewback is improved.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of anti-selection structure for arch bridge base, is mounted on arch bridge, the arch bridge includes multiple skewbacks (1), feature
It is, the anti-selection structure includes multiple straining beams (2), and the straining beam (2) is equipped with one or more and squeezes into the stake of soil body depths
(4), multiple straining beams (2) are fixed on the inside of at least one skewback (1).
2. anti-selection structure according to claim 1, which is characterized in that one end of the straining beam (2) is fixed on the skewback
(1) inside, the other end extend to the middle part of the arch bridge.
3. anti-selection structure according to claim 2, which is characterized in that multiple straining beams (2) are about in the arch bridge
Heart line is arranged symmetrically.
4. anti-selection structure according to claim 2, which is characterized in that the top of the more stakes (4) is along the straining beam (2)
Axis compartment of terrain be fixed on the straining beam (2).
5. anti-selection structure according to claim 1, which is characterized in that the straining beam (2) is hierarchical structure, the classification knot
Structure includes the beam body of multilevel being fixedly connected sequentially by sequence from low to high, in two adjacent levels, one or more
A advanced secondary beam body is from the end of rudimentary secondary beam body by proximad far extending.
6. anti-selection structure according to claim 5, which is characterized in that axis pair of the hierarchical structure about level-one beam body
Claim.
7. anti-selection structure according to claim 5, which is characterized in that in two adjacent levels, advanced secondary beam body
Area of section is less than the area of section of rudimentary secondary beam body.
8. anti-selection structure according to claim 1, which is characterized in that the straining beam (2) is made of concrete, and internal
Equipped with reinforcing bar, fashioned iron or drag-line.
9. anti-selection structure according to claim 1, which is characterized in that the stake (4) is prefabricated pile, cast-in-situ bored pile or digging
Hole stake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497477.8A CN110205914B (en) | 2019-06-10 | 2019-06-10 | Anti-pushing structure for arch bridge foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910497477.8A CN110205914B (en) | 2019-06-10 | 2019-06-10 | Anti-pushing structure for arch bridge foundation |
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| CN110205914A true CN110205914A (en) | 2019-09-06 |
| CN110205914B CN110205914B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910497477.8A Active CN110205914B (en) | 2019-06-10 | 2019-06-10 | Anti-pushing structure for arch bridge foundation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681105A (en) * | 2020-12-25 | 2021-04-20 | 河海大学 | Steel frame concrete combined arch bridge suitable for heavy equipment transportation |
| CN114875767A (en) * | 2022-05-18 | 2022-08-09 | 中铁工程设计咨询集团有限公司 | Supporting rod type thrust arch bridge and construction method thereof |
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| CN108951650A (en) * | 2018-07-28 | 2018-12-07 | 江苏地基工程有限公司 | Without support system of deep foundation pit support |
| CN109778893A (en) * | 2019-03-07 | 2019-05-21 | 上海勘测设计研究院有限公司 | Arch bridge combined type base configuration and its construction method |
| CN210481998U (en) * | 2019-06-10 | 2020-05-08 | 上海勘测设计研究院有限公司 | Anti-pushing structure for arch bridge foundation |
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| JP2000328519A (en) * | 1999-05-20 | 2000-11-28 | Taisei Corp | Arch bridge foundation structure |
| CN201395763Y (en) * | 2009-04-27 | 2010-02-03 | 桂林工学院 | An anti-sliding arch bridge foundation |
| CN203270438U (en) * | 2013-04-24 | 2013-11-06 | 中铁工程设计咨询集团有限公司 | Arch bridge foundation used for poor geological conditions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681105A (en) * | 2020-12-25 | 2021-04-20 | 河海大学 | Steel frame concrete combined arch bridge suitable for heavy equipment transportation |
| CN112681105B (en) * | 2020-12-25 | 2021-12-14 | 河海大学 | Steel frame concrete combined arch bridge suitable for heavy equipment transportation |
| CN114875767A (en) * | 2022-05-18 | 2022-08-09 | 中铁工程设计咨询集团有限公司 | Supporting rod type thrust arch bridge and construction method thereof |
| CN114875767B (en) * | 2022-05-18 | 2023-09-15 | 中铁工程设计咨询集团有限公司 | Brace rod type thrust arch bridge and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN110205914B (en) | 2024-07-02 |
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