CN206956521U - A kind of non-uniform beam and suspension cable combined bridge structural system - Google Patents
A kind of non-uniform beam and suspension cable combined bridge structural system Download PDFInfo
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- CN206956521U CN206956521U CN201720437980.0U CN201720437980U CN206956521U CN 206956521 U CN206956521 U CN 206956521U CN 201720437980 U CN201720437980 U CN 201720437980U CN 206956521 U CN206956521 U CN 206956521U
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- suspension cable
- bridge
- section girder
- suspension
- towing rope
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Abstract
The utility model discloses a kind of non-uniform beam and suspension cable combined bridge structural system, it is characterized in that：Bridge is the setting variable cross-section girder on the bridge pier of both ends, and between the variable cross-section girder of both ends, uiform section girder is set in the middle part of main span；Bridge tower is set in the pier top of variable cross-section girder, saddle is set on tower top on low clearance bridge tower, suspension cable main push-towing rope is set up using saddle and both ends anchor structure, in the stage casing of suspension cable main push-towing rope, suspension rod is set, uiform section girder is sling by suspension rod, Cable system is formed by saddle, suspension cable main push-towing rope and suspension rod, realizes large span main span.The utility model bridge reasonable stress, economy, difficulty of construction are low, handsome in appearance, can be applied to all kinds of 500m across footpath bridges of cross a river or cross-line main span 150.
Description
Technical field
It the utility model is related to the bridge design of main span 150~500m across footpaths.
Background technology
Nonprismatic continuous beam or continuous rigid frame bridge are the winner of Bridge type scheme comparison in 50-120m spans, but as master
When across footpath further increases, it is easy to the problems such as diseases such as middle span deflexion, cracking in webs occur, and Bridges are simple, bridge
Landscape effect is general.
Suspension bridge span ability is big, and the bridge of super more than 1000m across footpaths is substantially suspension bridge, and Bridges are attractive in appearance,
In recent years favored by urban district Urban Bridge conceptual design, but girder of suspension bridge uses steel box girder more；Girder steel box-girder, main push-towing rope
High tensile steel wire and the casting of large scale saddle are costly；Guide cable crosses the river difficulty；Main push-towing rope and hanger erection need to arrange that cat road etc. faces
When facility, working measure is expensive, and Construction control difficulty is big.Although suspended-cable structure is handsome in appearance, due to cost, difficulty of construction
Etc. factor, in Medium Span bridge, the not popularization and application of Suspension bridge structure bridge.
Utility model content
The utility model avoids the above-mentioned bridge weak points of 150~500m of main span, its comprehensive advantage, there is provided one
Kind of non-uniform beam and suspension cable combined bridge structural system, for Bridge Design in the range of 150~500m across footpaths provide one kind more have it is competing
Strive the bridge structure form of power.
The utility model adopts the following technical scheme that to solve technical problem：
The utility model non-uniform beam is with the characteristics of suspension cable combined bridge structural system：The bridge be
Variable cross-section girder is set on the bridge pier of both ends, between the variable cross-section girder of both ends, uiform section girder is set in the middle part of main span；Institute
State and bridge tower is set in the pier top of variable cross-section girder, saddle is set on the tower top on the bridge tower, utilize the saddle and two
Hold anchorage anchor structure to set up suspension cable main push-towing rope, suspension rod is set in the stage casing of the suspension cable main push-towing rope, the uiform section girder is by suspension rod
Sling, Cable system is formed by the saddle, suspension cable main push-towing rope and suspension rod, realizes large span main span.
The utility model non-uniform beam is lain also in the characteristics of suspension cable combined bridge structural system：The variable cross-section girder
Structure setting is used to undertake itself dead load and mobile load, does not consider the load of span centre portion uiform section girder.
The utility model non-uniform beam is lain also in the characteristics of suspension cable combined bridge structural system：Both ends anchorage and suspension cable system
The setting of system only considers the dead load and mobile load of uiform section girder.
The utility model non-uniform beam is lain also in the characteristics of suspension cable combined bridge structural system：The uiform section girder with
Both ends variable cross-section girder uses and is rigidly connected or is articulated and connected.
The utility model non-uniform beam is lain also in the characteristics of suspension cable combined bridge structural system：The height of the bridge tower takes
For 1/6~1/8 bridge main across across footpath.
The utility model non-uniform beam is lain also in the characteristics of suspension cable combined bridge structural system：The suspension cable main push-towing rope uses
Steel strand wires or parallel steel wire composition strand；The both ends anchor structure of the suspension cable main push-towing rope is to be anchored in both ends anchorage using ground anchor type
It is interior, or be anchored in for self-anchored type in bridge main beam, the suspension rod is connected by cord clip with suspension cable main push-towing rope.
The utility model non-uniform beam is lain also in the characteristics of suspension cable combined bridge structural system：The frame of the suspension cable main push-towing rope
If it is to use the variable cross-section girder that Hanging Basket cantilever completes construction to install each strand of suspension cable main push-towing rope by root as platform.
Compared with the prior art, the utility model has the beneficial effect that：
1st, the utility model makes full use of concrete And of Varying Depth beam root depth of beam big, bending resistance, the big advantage of shear stiffness, hair
Concrete structure section advantage is waved, and utilizes concrete variable cross-section beam economic advantages；Using the suspension cable with compared with high-tensile
The Cable system that main push-towing rope and suspension rod are formed undertakes the deadweight of middle part uiform section girder, effectively reduces span centre beam section due to apart from bridge
Pier distance is big, the arm of force is big, moment of flexure is big and causes girder pier top stress larger, evades that beams of concrete span ability is limited, easily goes out
Around, rift defect under existing span centre, increase bridge span.
3rd, the utility model centre suspension cord system only assume responsibility for the load of span centre part beam section, and bridge tower is highly small, its suspension cable
Main push-towing rope, the material property of saddle and anchor system and dimensions are small compared with same span routine suspension bridge；Suspension cable main push-towing rope and hang
Bar can use conventional steel strand wires material, and suspension cable main push-towing rope and saddle specification are small, and manufacture difficulty is small, have effectively evaded conventional suspension bridge master
The defects of cable system cost is high.
4th, in the utility model bridge tower and main push-towing rope system construction, using having completed the variable cross-section girder of construction to apply
Work platform, the interim cat road construction system of conventional suspension bridge is evaded, has substantially reduced construction cost, reduces difficulty of construction.
5th, the utility model Bridge structural system reasonable stress, variable cross-section beam bridge is combined, suspension bridge bridge appearance is made
Type advantage, it is a kind of more competitive bridge alternatives of main span 150-500m across footpaths.
Brief description of the drawings
Fig. 1 is ground anchor type non-uniform beam and suspension cable combined bridge structural system schematic diagram in the utility model；
Fig. 2 is self-anchored type non-uniform beam and suspension cable combined bridge structural system schematic diagram in the utility model；
Fig. 3 is variable cross-section main beam stress sketch in the utility model；
Fig. 4 is main span middle part uiform section main beam stress sketch in the utility model；
Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 5 d, Fig. 5 e, Fig. 5 f and Fig. 5 g are the utility model non-uniform beam and suspension cable combined bridge
Structural system construction process figure；
Label in figure：Bridge 1 pier, 2 anchorages, 3 variable cross-section girders, 4 uiform section girders, 5 bridge towers, 6 suspension cable main push-towing ropes, 7 suspension rods, 8
Saddle.
Embodiment
Referring to Fig. 1, Fig. 2, non-uniform beam and the structure type of suspension cable combined bridge structural system are in the present embodiment：Bridge
Structural system is that variable cross-section girder 3 is set on both ends bridge pier 1, is set between both ends variable cross-section girder 3, in the middle part of main span
Uiform section girder 4；Bridge tower 5 is set in the pier top of variable cross-section girder 3, saddle 8 is set on the tower top of bridge tower 5, utilizes saddle 8
And the anchor structure of both ends anchorage 2 sets suspension cable main push-towing rope 6, suspension cable main push-towing rope 6 stage casing set suspension rod 7, uiform section girder 4 by
Suspension rod 7 is sling, and is formed Cable system by saddle 8, suspension cable main push-towing rope 6 and suspension rod 7, is realized large span main span.
For the structure type of non-uniform beam in the present embodiment and suspension cable combined bridge structural system, its variable cross-section girder by
Power is as shown in figure 3, uiform section main beam stress is as shown in figure 4, reasonable stress, economy, difficulty of construction be small, moulding in the middle part of its main span
It is attractive in appearance, it can be applied to all kinds of cross a river or cross-line main span 150-500m across footpath bridges.In Fig. 3 and Fig. 4, F1 is transition pier counter-force, F2
For main pier counter-force, F3 is side steeve tension, and F4 is tension of main cable, and F5 is steeve tension, and F6 is king-post support force.
In specific implementation, corresponding structure setting also includes：
The structure setting of variable cross-section girder 3 predominantly undertakes dead load and mobile load in own range, does not consider that span centre portion etc. is cut
The load of face girder 4, its design refers to uprise section continuous beam or T-shaped just structure determines root deck-molding, section and prestressing force cloth
Put.
The setting of both ends anchorage 2 and Cable system only considers the dead load and mobile load of uiform section girder 4, waits and cuts in the middle part of main span
Dead load and mobile load are mainly transferred to suspension cable main push-towing rope 6 by suspension rod 7 in the own range of face girder 4, and then are transferred to bridge tower and anchor
Heavy stone used as an anchor；The design of uiform section girder and funicular system in the middle part of main span, can be according to the outstanding of the span for only considering middle part uiform section girder
Cable bridge carries out relevant design.Middle part uiform section girder is undertaken by funicular system, reduces transmission of its load to variable cross-section girder section.
Uiform section girder 4 uses with both ends variable cross-section girder 3 and is rigidly connected or is articulated and connected, uiform section girder and variable cross-section
Axle power is mainly transmitted in girder joint, and shears smaller with moment of flexure.
The height of bridge tower 5 is taken as 1/8~1/10 bridge main across across footpath；Suspension cable main push-towing rope 6 uses galvanized strand wires or epoxy
Steel strand wires, or strand is formed with parallel zinc-coated wire；Because suspension cable main push-towing rope 6 only undertakes the load of uiform section girder 4 so that
The load that suspension cable main push-towing rope 6 is undertaken is relatively small, thus its section specification is relatively small；Simultaneously as suspension cable main push-towing rope
Specification is relatively small, and the saddle in Cable system is also smaller.
Because the specification of suspension cable main push-towing rope 6 is relatively small, suspension cable main push-towing rope can use Zheng Shu factories to make, whole main push-towing rope integral hoisting
Installation, set up to have completed the variable cross-section girder 3 of construction as platform, it is not necessary to which conventional suspension bridge construction scene Strand Erection faces
When facility, that is, do not need cat road facility.
The both ends anchor structure of suspension cable main push-towing rope 6 can be anchored in anchorage 2 using ground anchor type as shown in Figure 1, or is adopted
It is anchored in self-anchored type as shown in Figure 2 in bridge main beam, suspension rod 7 is connected by cord clip with suspension cable main push-towing rope 6, for transmitting bridge
Load, suspension rod are in the range of uiform section girder.
The utility model combines the stress advantage of variable cross-section concrete beam bridge and suspension bridge, its variable cross-section main beam profile
Grace, it is thick and heavy not lose merrily and lightheartedly；Main push-towing rope is unfolded naturally, is had a graceful figure, and suspension cable main push-towing rope and suspension rod aligned orderly, curve are taken with straight line
Match somebody with somebody, be easy to get integrated into environment；The sag vertical curve of the convex curve of variable cross-section girder and suspension cable main push-towing rope mutually echoes in main span, overall succinct, bright
It hurry up, show the structure lines of grace.
Construction method is carried out as follows：
Step 1：As shown in Figure 5 a, construction bridges basis, bridge pier 1 and anchorage 2；
Step 2：As shown in Figure 5 b, constructed paragraph by paragraph by the way of Hanging Basket variable cross-section girder part, and tensioning is pre- accordingly
Stress system；
Step 3：As shown in Figure 5 c, end bay closes up, and completes the construction of variable cross-section girder 3；
Step 4：As fig 5d, construction bridge tower 5, and saddle 8 is installed；
Step 5：As depicted in fig. 5e, it is platform with variable cross-section girder 3, sets up suspension cable main push-towing rope 6, the end anchor of suspension cable main push-towing rope 6
It is fixed in anchorage and realizes earth anchor；
Step 6：As shown in figure 5f, uiform section girder 4 in the middle part of lifting construction main span, uiform section girder 4 is steel main longitudinal grider, and
Piecemeal erection suspension rod 7 simultaneously；
Step 7：As shown in fig. 5g, mid-span main longitudinal grider closes up, and installs crossbeam and bridge deck, completes non-uniform beam and suspension cable group
Close the construction of bridge structure.
Claims (7)
1. a kind of non-uniform beam and suspension cable combined bridge structural system, it is characterized in that：The bridge is in both ends bridge
Variable cross-section girder (3) is set on pier (1), between both ends variable cross-section girder (3), uiform section girder is set in the middle part of main span
(4)；Bridge tower (5) is set in the pier top of the variable cross-section girder (3), saddle (8) is set on the tower top of the bridge tower (5),
Suspension cable main push-towing rope (6) is set up using the saddle (8) and both ends anchorage (2) anchor structure, in the stage casing of the suspension cable main push-towing rope (6)
Suspension rod (7) is set, and the uiform section girder (4) is sling by suspension rod (7), by the saddle (8), suspension cable main push-towing rope (6) and suspension rod
(7) Cable system is formed, realizes large span main span.
2. non-uniform beam and suspension cable combined bridge structural system described in claim 1, it is characterized in that：The variable cross-section girder
(3) structure setting is used to undertake itself dead load and mobile load, does not consider the load of span centre portion uiform section girder (4).
3. non-uniform beam and suspension cable combined bridge structural system described in claim 1, it is characterized in that：Both ends anchorage (2) and outstanding
The setting of cable system only considers the dead load and mobile load of uiform section girder (4).
4. non-uniform beam and suspension cable combined bridge structural system described in claim 1, it is characterized in that：The uiform section girder
(4) used with both ends variable cross-section girder (3) and be rigidly connected or be articulated and connected.
5. non-uniform beam and suspension cable combined bridge structural system described in claim 1, it is characterized in that：The height of the bridge tower (5)
The bridge main for being taken as 1/6~1/8 is spent across across footpath.
6. non-uniform beam and suspension cable combined bridge structural system described in claim 1, it is characterized in that：The suspension cable main push-towing rope (6)
Using steel strand wires or parallel steel wire composition strand；The both ends anchor structure of the suspension cable main push-towing rope (6) is anchored in using ground anchor type
In both ends anchorage (2), or it is that self-anchored type is anchored in bridge main beam, the suspension rod (7) is connected by cord clip and suspension cable main push-towing rope (6)
Connect.
7. non-uniform beam according to claim 1 and suspension cable combined bridge structural system, it is characterized in that：The suspension cable main push-towing rope
(6) erection is to use the variable cross-section girder (3) that Hanging Basket cantilever completes construction to install each rope of suspension cable main push-towing rope by root for platform
Stock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720437980.0U CN206956521U (en) | 2017-04-25 | 2017-04-25 | A kind of non-uniform beam and suspension cable combined bridge structural system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720437980.0U CN206956521U (en) | 2017-04-25 | 2017-04-25 | A kind of non-uniform beam and suspension cable combined bridge structural system |
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| Publication Number | Publication Date |
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| CN206956521U true CN206956521U (en) | 2018-02-02 |
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| CN201720437980.0U Active CN206956521U (en) | 2017-04-25 | 2017-04-25 | A kind of non-uniform beam and suspension cable combined bridge structural system |
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