CN205954469U - Interior earth anchor suspension bridge - Google Patents
Interior earth anchor suspension bridge Download PDFInfo
- Publication number
- CN205954469U CN205954469U CN201620807202.1U CN201620807202U CN205954469U CN 205954469 U CN205954469 U CN 205954469U CN 201620807202 U CN201620807202 U CN 201620807202U CN 205954469 U CN205954469 U CN 205954469U
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- sarasota
- horizon bar
- suspension bridge
- main push
- towing rope
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Abstract
The utility model discloses an interior earth anchor suspension bridge mainly comprises main push -towing rope, hoist cable, cable tower, batter post, horizon bar and girder, batter post and horizon bar set up the both sides at cable tower respectively to have a common extreme point, on tip and the horizon bar of batter post were in same water flat line promptly, the mid point at cable tower was established to the extreme point, tip at the horizon bar is equipped with steering block I, be equipped with the cable saddle at cable tower's top, cable tower's bottom has pour basic II and be equipped with steering block II, pour basis I in the bottom of batter post, the tip of main push -towing rope II fixed mounting of steering block that walk around steering block I, the cable tower bottom of cable saddle, the horizon bar tip at cable tower top in proper order on basis I. The utility model discloses saved bulky anchorage, reduced the calculated length of the main push -towing rope of connecting the anchorage, made main push -towing rope stress and amplitude under the dead load reduce, with compare from the anchor suspension bridge, the interior earth anchor suspension bridge span is greater than far away from the anchor suspension bridge.
Description
Technical field
This utility model belongs to a kind of suspension bridge and in particular to a kind of interior earth anchor suspension bridge.
Background technology
Suspension bridge structure has that stress performance is good, span ability big, lightly attractive in appearance, shock resistance is strong, version is various
And good to landform adaptability the features such as, many cross over the hindrance to traffics such as great rivers, high mountain gorge, bay harbour when,
Often as first-selected bridge type.Therefore, people also have devised multiple Suspension bridge structure.As Chinese Patent Application No. is
201510012845.7 disclose a kind of suspension bridge of high torsional rigidity, and including girder, Sarasota, main push-towing rope and suspension rod, main push-towing rope is one
Bar and be located at girder longitudinal center facade, suspension rod be distributed in girder both lateral sides for by main push-towing rope suspend in midair girder so that main push-towing rope,
Suspension rod and girder form the structure that cross section is spatial triangle；This utility model utilizes the stability of triangle, forms one
Similar to triangle box-beam structure, fundamentally improve the overall torsional rigidity of suspension bridge and reverse shake frequency, directly improve quiet wind
The critical wind velocity of lower torsional buckling, it is also possible to increase reverse shake frequency and the vertical ratio shaking frequency, thus improve electric shock
Critical wind velocity, also ensure that compared with large span suspension bridge safety；And, do not increase existing suspension bridge material and
Cost, and in fact, main push-towing rope is one, cross-sectional area can be increased, and increase suspension rod quantity and cross-sectional area, increase further and turn round
Turn rigidity.And for example Chinese Patent Application No. discloses a kind of self-anchored suspension bridge for 200920043292.1, including Sarasota basis,
Sarasota, cable saddle, stiff girder, main push-towing rope and suspension rod, the steel pipe being provided with concrete perfusion in empty steel pipe in described stiff girder and being formed
Concrete combined component.Using concrete filled steel tube stiff girder, cost not only can be reduced, and easy construction, can substantially add
Fast construction speed.For another example Chinese Patent Application No. discloses a kind of bridge structure for 201120102496.5, includes runway
Beam, bridge tower, anchorage, weight cable, is characterized in that, weight cable is combined by a main rope and Duo Gen rope, opens from Sarasota
Begin, keep at a certain distance away and several ropes are separated from weight cable, be connected with track beam, the secondary rope on weight cable separates
Place is provided with a point cable device.Weight cable is made up of secondary rope and main rope, and with fixture combination together；Cable utensil is divided to have secondary rope from load-bearing
The inner chamber of main push-towing rope separation shape, and have clamp device, can be fixed on weight cable；Structure of the present utility model can optimize
The stress of suspension bridge weight cable, saves material.
But the earth anchored suspension bridge in generally conventional formula, needs to build bulky anchorage to anchor main push-towing rope, this is just
Cause the place in geological condition difference, the foundation engineering amount of anchorage structures is very big, often becomes the difficult point of engineering；Ground anchor type hangs
Cable bridge anchorage and Anchor Foundation occupy the considerable part of construction costs, become the important side of impact Suspension bridge structure economy
Face；In urban area or tourist district, build bulky anchorage, environmental beauty also can be had a negative impact.
Utility model content
For the problems referred to above, this utility model provides a kind of interior earth anchor suspension bridge, by setting up water at Sarasota two ends
Flat bar and batter post, make that main push-towing rope bypasses Sarasota top cable saddle successively, horizontal boom end steering block, Sarasota bottom steering block are anchored to
Basis.Act on the load on girder and follow following Path of Force Transfer：Girder → hoist cable → main push-towing rope → bridge tower → basis.By cable anchor
Gu on the basis of Sarasota, reducing the axle power of Sarasota, simultaneously because setting up batter post thus increasing the lateral rigidity of tower.With earth anchor
Suspension bridge is compared, and eliminates bulky anchorage, decreases the computational length of the main push-towing rope connecting anchorage, so that main push-towing rope is made in dead load
Reduced with lower stress and amplitude；Compared with from anchor suspension bridge, interior earth anchor suspended span is far longer than from anchor suspension bridge, can reach
With earth anchor suspension bridge identical span.
This utility model takes technical scheme below to realize above-mentioned purpose：
A kind of interior earth anchor suspension bridge, is mainly made up of main push-towing rope, hoist cable, Sarasota, batter post, horizon bar and girder；Described hangs
Rope is evenly arranged between main push-towing rope and girder；Described Sarasota is located at the two ends of girder；Described batter post and horizon bar set respectively
Put the both sides in Sarasota, and have a common end points, that is, the end of batter post and horizon bar are in same horizontal line, end points
It is located at the midpoint of Sarasota；It is provided with steering block I in the end of horizon bar；It is provided with cable saddle at the top of Sarasota, the bottom of Sarasota pours
There is basis II and be provided with steering block II；Pour basis I in the bottom of batter post；The end of described main push-towing rope bypasses Sarasota top successively
The cable saddle in portion, the steering block I of horizontal boom end, the steering block II of Sarasota bottom are fixedly mounted on basis I.
Further illustrate, the end of described main push-towing rope is provided with scattered cable saddle around at basic I.
Further illustrate, about described Sarasota top, main push-towing rope within angle α become with Sarasota in two ends is equal and is less than 180 °.
Further illustrate, described horizon bar upper and lower ends main push-towing rope is equal with the inner clip angle beta that horizon bar is formed and is less than
180°.
Further illustrate, described batter post and horizon bar are all made using steel construction lattice column form.Using steel construction lattice
Structure cylindricality formula, can effectively reduce horizon bar and batter post deadweight.Described batter post and/or horizon bar can also using steel case or
Person's concrete box type is made.
In this utility model, for limit levels boom end amount of deflection, technology of the present utility model can be optimized further
Scheme：It is provided with auxiliary pier in the end of horizon bar.
In this utility model, when geological state is preferable, can directly adopt shallow foundation；When geological state is general, in batter post
Bottom batter piling；When geological state is poor, the stake being squeezed into or sunk to by many roots in soil and the cushion cap institute of connection stake top need to be made
The basis constituting.
In this utility model, main push-towing rope is the main supporting member of this system, is primarily subjected to pulling force；Hoist cable plays connection master
Beam and the effect of main push-towing rope, only transmit the component of load, and the load such as girder, bridge deck and mobile load passes to main push-towing rope by hoist cable；Rope
Tower acts the effect supporting main push-towing rope, is primarily subjected to pressure.Interior earth anchor suspension bridge disclosed in this utility model pass through arrange horizon bar and
Batter post, on the basis of cable is anchored at Sarasota, reduces the axle power of Sarasota, simultaneously because setting up batter post thus increasing the side of tower
To rigidity.Compared with earth anchor suspension bridge, eliminate bulky anchorage, decrease the computational length of the main push-towing rope connecting anchorage,
Main push-towing rope stress and amplitude under dead load is made to reduce；Compared with from anchor suspension bridge, interior earth anchor suspended span is far longer than certainly
Anchor suspension bridge.
Advantage of the present utility model：
1. by setting up horizon bar and batter post, and main push-towing rope is anchored to Sarasota basis, eliminates anchorage and reduce Sarasota
Axle power.
2., by the supporting role of batter post, increase the lateral rigidity of Sarasota.
3., because main push-towing rope is divided into upper and lower two parts by horizon bar, compared with earth anchor suspension bridge, decrease connection anchorage section master
The computational length of cable, thus reduce the stress of main push-towing rope and amplitude under dead load.
Brief description
Fig. 1 is the elevation of interior earth anchor suspension bridge.
Fig. 2 is the force analysis figure of interior earth anchor suspension bridge.
Fig. 3 is the elevation removing earth anchor suspension bridge in auxiliary pier.
In figure：1- main push-towing rope；2- hoist cable；3- Sarasota；4- batter post；5- horizon bar；6- cable saddle；7- steering block I；8- dissipates cable saddle；
9- basis I；10- girder；11- basis II；12- steering block II；13- auxiliary pier.
Specific embodiment
In conjunction with Fig. 1-2, Force principle of the present utility model is illustrated：
Force principle：
Interior earth anchor suspension bridge stress is as shown in Fig. 2 G1、G2For two basic gravity, S is cable tension, X1、X2Based on water
Square to institute's stress, Y1、Y2Based on power suffered by vertical direction, f is sliding frictional force, and α is the angle of cable and Sarasota, and H is
Sarasota height, β is the angle of batter post and ground level, and N is batter post axle power, wherein：
1. Foundation pressure：
By O1Make a concerted effort knowable to balance in knee level direction：
∑Fx=0, f1+X1+ S sin α-S=0 (1)
Can be released by (1) formula：
X1=S-S sin α-f1(2)
Make a concerted effort to balance by integral level direction：
∑Fx=0, X1+X2+ f=S sin α (3)
Can be released by (3) formula：
X2=2 Ssin α-S-f2(4)
To O2Point equalising torque：
∑MO2=0, G1·L-Y1L-S sin α H+S cos α L=0 (5)
Can be released by (5) formula：
To O1Point equalising torque：
Can be released by (7) formula：
The Foundation pressure of interior earth anchor suspension bridge can be obtained by (2) formula, (4) formula, (6) formula, (8) formula.
2.G1The determination of marginal value
Take Foundation pressure Y1>=0, to ensure that basis is not pulled up, according to (7) formula：
Can be released by (11) formula：
Can be with G by (10) formula1Marginal value.
3.O3Knee level dynamic balance
Equation can be balanced by Fig. 2, that is,：
N cos β=2S sin α (11)
In formula：
(11) formula is brought into by (12) formula：
Axle power N can be obtained by (13).
In sum, ignore king-post, horizon bar, batter post deadweight in the case of, structural member only be subject to axial compressive force.This knot
There are seven fundamental unknown variables in the computation model of structure, including：X1、Y1、X2、Y2、f、L、N；Total formula (1), formula (3), formula (5), formula
(7), (11) five relational expressions of formula；Fundamental unknown variables f, L, N are three undetermined parameters, set f, L, N according to actual design demand
Two parameters in three parameter values, can extrapolate remaining parameter value according to relational expression.
Compared with conventional suspension bridge, Foundation pressure greatly reduces, and therefore basic requirement is reduced, can make shallow foundation shape
Formula.
With reference to the accompanying drawings and examples structure design of the present utility model is further described.
Embodiment 1：
It is identical that the span arrangement of the interior earth anchor suspension bridge of the present embodiment all raises the Yangtze Bridge with profit.As shown in figure 1, in a kind of
Earth anchor suspension bridge, is mainly made up of main push-towing rope 1, hoist cable 2, Sarasota 3, batter post 4, horizon bar 5 and girder 10；Described hoist cable 2 is uniform
It is arranged between main push-towing rope 1 and girder 10；Described Sarasota 3 is located at the two ends of girder 10；Described batter post 4 and horizon bar 5 are respectively
It is arranged on the both sides of Sarasota 3, and has a common end points, that is, the end of batter post 4 and horizon bar 5 are in same horizontal line
On, end points is located at the midpoint of Sarasota 3；It is provided with steering block I 7 in the end of horizon bar 5；It is provided with cable saddle 6, rope at the top of Sarasota 3
The bottom of tower 3 has poured basis II 11 and has been provided with steering block II 12；Pour basis I 9 in the bottom of batter post 4；Described main push-towing rope 1
End bypass successively the cable saddle 6 at Sarasota 3 top, the steering block I 7 of horizon bar 5 end, Sarasota 3 bottom steering block II 12 solid
Dingan County is contained on basis I 9.
The end of described main push-towing rope 1 is provided with scattered cable saddle 8 around at basis I 9.Two ends main push-towing rope 1 about described Sarasota 3 top
Equal with become within angle α of Sarasota 3 and be less than 180 °.Described horizon bar 5 upper and lower ends main push-towing rope 1 and horizon bar 5 are formed
Inner clip angle beta is equal and is less than 180 °.Described batter post 4 and horizon bar 5 are all made using steel construction lattice column form.In horizon bar
5 end is provided with auxiliary pier 13.
According to conventional design, huge anchorage and deep foundation need to be set, be computed, raise the Yangtze Bridge with profit compared with, by
In eliminating anchorage, this expense saves 2.9 hundred million yuan, and Sarasota axle power reduces 51.8%, and Sarasota lateral rigidity improves 21.3%, work
Phase reduces 10 months.
Embodiment 2：
The span arrangement of the interior earth anchor suspension bridge of the present embodiment is all identical with the Wufeng Mount Yangtze Bridge.As shown in figure 3, it is a kind of
Interior earth anchor suspension bridge, is mainly made up of main push-towing rope 1, hoist cable 2, Sarasota 3, batter post 4, horizon bar 5 and girder 10；Described hoist cable 2 is equal
Even it is arranged between main push-towing rope 1 and girder 10；Described Sarasota 3 is located at the two ends of girder 10；Described batter post 4 and 5 points of horizon bar
It is not arranged on the both sides of Sarasota 3, and has a common end points, that is, the end of batter post 4 and horizon bar 5 are in same horizontal line
On, end points is located at the midpoint of Sarasota 3；It is provided with steering block I 7 in the end of horizon bar 5；It is provided with cable saddle 6, rope at the top of Sarasota 3
The bottom of tower 3 has poured basis II 11 and has been provided with steering block II 12；Pour basis I 9 in the bottom of batter post 4；Described main push-towing rope 1
End bypass successively the cable saddle 6 at Sarasota 3 top, the steering block I 7 of horizon bar 5 end, Sarasota 3 bottom steering block II 12 solid
Dingan County is contained on basis I 9.
The end of described main push-towing rope 1 is provided with scattered cable saddle 8 around at basis I 9.Two ends main push-towing rope 1 about described Sarasota 3 top
Equal with become within angle α of Sarasota 3 and be less than 180 °.Described horizon bar 5 upper and lower ends main push-towing rope 1 and horizon bar 5 are formed
Inner clip angle beta is equal and is less than 180 °.Described batter post 4 and horizon bar 5 are all made using steel case.
According to conventional design, huge anchorage and deep foundation need to be set, be computed, compared with the Yangtze Bridge of Wufeng Mount,
Due to eliminating anchorage, this expense saves 20%, and Sarasota axle power reduces 48.8%, and Sarasota lateral rigidity improves 20.1%, base
Hole cutting depth reduces 20m, and the duration reduces 9 months.
Embodiment 3：
The span arrangement of the interior earth anchor suspension bridge of the present embodiment is all identical with yangtze river in nanjing four bridge.As shown in figure 1, in a kind of
Earth anchor suspension bridge, is mainly made up of main push-towing rope 1, hoist cable 2, Sarasota 3, batter post 4, horizon bar 5 and girder 10；Described hoist cable 2 is uniform
It is arranged between main push-towing rope 1 and girder 10；Described Sarasota 3 is located at the two ends of girder 10；Described batter post 4 and horizon bar 5 are respectively
It is arranged on the both sides of Sarasota 3, and has a common end points, that is, the end of batter post 4 and horizon bar 5 are in same horizontal line
On, end points is located at the midpoint of Sarasota 3；It is provided with steering block I 7 in the end of horizon bar 5；It is provided with cable saddle 6, rope at the top of Sarasota 3
The bottom of tower 3 has poured basis II 11 and has been provided with steering block II 12；Pour basis I 9 in the bottom of batter post 4；Described main push-towing rope 1
End bypass successively the cable saddle 6 at Sarasota 3 top, the steering block I 7 of horizon bar 5 end, Sarasota 3 bottom steering block II 12 solid
Dingan County is contained on basis I 9.
The end of described main push-towing rope 1 is provided with scattered cable saddle 8 around at basis I 9.Two ends main push-towing rope 1 about described Sarasota 3 top
Equal with become within angle α of Sarasota 3 and be less than 180 °.Described horizon bar 5 upper and lower ends main push-towing rope 1 and horizon bar 5 are formed
Inner clip angle beta is equal and is less than 180 °.Described batter post 4 and horizon bar 5 are all made using steel construction lattice column form.In horizon bar
5 end is provided with auxiliary pier 13.
According to conventional design, huge anchorage and deep foundation need to be set, be computed, compared with yangtze river in nanjing four bridge, by
In eliminating anchorage, this expense saves 4.3 hundred million, and Sarasota axle power reduces 52.3%, and Sarasota lateral rigidity improves 30.2%, foundation ditch
Cutting depth reduces 20m, and the duration reduces 12 months.
Embodiment 1～3 technical parameter contrast table
| Expense saves (hundred million yuan) | Sarasota axle power subtracts (%) | Sarasota lateral rigidity (%) | Duration shortens (moon) | |
| Embodiment 1 | 2.9 | 51.8 | 21.3 | 10 |
| Embodiment 2 | 3.2 | 48.8 | 20.1 | 9 |
| Embodiment 3 | 4.3 | 52.3 | 30.2 | 12 |
Claims (6)
1. a kind of interior earth anchor suspension bridge it is characterised in that：Mainly by main push-towing rope（1）, hoist cable（2）, Sarasota（3）, batter post（4）, level
Bar（5）And girder（10）Composition；Described hoist cable（2）It is evenly arranged in main push-towing rope（1）And girder（10）Between；Described Sarasota
（3）It is located at girder（10）Two ends；Described batter post（4）And horizon bar（5）It is separately positioned on Sarasota（3）Both sides, and have
One common end points, i.e. batter post（4）End and horizon bar（5）It is in same horizontal line, end points is located at Sarasota（3）In
Point；In horizon bar（5）End be provided with steering block I（7）；In Sarasota（3）Top be provided with cable saddle（6）, Sarasota（3）Bottom
Pour basis II（11）And it is provided with steering block II（12）；In batter post（4）Bottom pour basis I（9）；Described main push-towing rope
（1）End bypass Sarasota successively（3）The cable saddle at top（6）, horizon bar（5）The steering block I of end（7）, Sarasota（3）Bottom
Steering block II（12）It is fixedly mounted on basis I（9）On.
2. interior earth anchor suspension bridge according to claim 1 it is characterised in that：Described main push-towing rope（1）End around to basis I
（9）Place is provided with scattered cable saddle（8）.
3. interior earth anchor suspension bridge according to claim 1 it is characterised in that：Described Sarasota（3）Two ends master about top
Cable（1）With Sarasota（3）Become within angle α is equal and is less than 180 °.
4. interior earth anchor suspension bridge according to claim 1 it is characterised in that：Described horizon bar（5）Upper and lower ends main push-towing rope
（1）With horizon bar（5）The inner clip angle beta being formed is equal and is less than 180 °.
5. interior earth anchor suspension bridge according to claim 1 it is characterised in that：Described batter post（4）And horizon bar（5）All adopt
Made with steel construction lattice column form or steel case or concrete box type.
6. interior earth anchor suspension bridge according to claim 1 it is characterised in that：In horizon bar（5）End be provided with auxiliary pier
（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620807202.1U CN205954469U (en) | 2016-07-28 | 2016-07-28 | Interior earth anchor suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620807202.1U CN205954469U (en) | 2016-07-28 | 2016-07-28 | Interior earth anchor suspension bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205954469U true CN205954469U (en) | 2017-02-15 |
Family
ID=57974022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620807202.1U Withdrawn - After Issue CN205954469U (en) | 2016-07-28 | 2016-07-28 | Interior earth anchor suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205954469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120534A (en) * | 2016-07-28 | 2016-11-16 | 广西大学 | Interior earth anchor suspension bridge |
| CN111535146A (en) * | 2020-04-30 | 2020-08-14 | 中交二公局第二工程有限公司 | Method for installing steel truss girder of suspension bridge |
-
2016
- 2016-07-28 CN CN201620807202.1U patent/CN205954469U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120534A (en) * | 2016-07-28 | 2016-11-16 | 广西大学 | Interior earth anchor suspension bridge |
| CN106120534B (en) * | 2016-07-28 | 2018-01-23 | 广西大学 | Interior earth anchor suspension bridge |
| CN111535146A (en) * | 2020-04-30 | 2020-08-14 | 中交二公局第二工程有限公司 | Method for installing steel truss girder of suspension bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170215 Effective date of abandoning: 20180123 |