CN205474782U - External prestress wave form steel web T roof beam - Google Patents
External prestress wave form steel web T roof beam Download PDFInfo
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- CN205474782U CN205474782U CN201521024177.1U CN201521024177U CN205474782U CN 205474782 U CN205474782 U CN 205474782U CN 201521024177 U CN201521024177 U CN 201521024177U CN 205474782 U CN205474782 U CN 205474782U
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- concrete
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- wavelike steel
- steel webplate
- external prestressing
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Abstract
The utility model discloses an external prestress wave form steel web T roof beam, including concrete roof, concrete floor, end crossbeam, wave form steel web and shear connector and external prestress cable, concrete roof and concrete floor pass through shear connector and are connected formation T roof beam section with wave form steel web, the end crossbeam set up at T roof beam both ends tip, is connected with concrete roof, concrete floor, wave form steel web respectively, the external prestress cable through turn to the device dog -ear department turn to and the anchor on holding the crossbeam. The utility model discloses the structure atress has been optimized again to aspect advantages such as existing ordinary wave form steel web T roof beam atress performance, material utilization rate, durability, has simplified the member structure, has reduced prestressing steel's quantity, has reduced the cost, avoided that stretch -draw pore among the internal prestress construction is blockked up, after the stretch -draw unreal scheduling problem of mud jacking, guaranteed construction quality to easily the later stage is consolidated bridge structures's maintenance.
Description
Technical field
This utility model belongs to the bridge technology field of highway and railway, is primarily related to a kind of external prestressing waveform
Steel web T beam.
Background technology
Wavelike steel webplate PC T beam structure is a kind of novel steel concrete combinative structure, by cough up by
Steel, concrete bi-material are used in combination, and make full use of the feature that concrete crushing strength is high, corrugated sheet steel shearing strength is high,
Improve the service efficiency of bi-material, and alleviate dead load, decrease web and make template, assembling reinforcement, pour
The operational procedure of concrete, reduces construction costs, it is to avoid Web cracks disease, is a kind of economy, reasonable, practical structure
Form.
Present stage, web has been had to use Wavelike steel webplate construction pre-stress concrete T-shaped beam.Such as Chinese patent
(ZL201420647729.3) disclosed " a kind of Wavelike steel webplate PC T beam structure ", this Wavelike steel webplate is pre-
Prestressed concrete T girder construction is compared with common PC T beam, and Wavelike steel webplate combination T girder construction decreases web steel
The working procedures such as muscle colligation, concreting, accelerate construction speed；Wavelike steel webplate batch production is processed, it is ensured that construction matter
Amount；Dead load is light, reduces the tonnage demand to hanging device, improves anti-seismic performance；Also there is handsome in appearance, stress
Can rationally, the advantage such as energy-conserving and environment-protective, economic performance be good.Therefore, Wavelike steel webplate combination T beam will become the bridge of most competitiveness
One of girder construction.But, existing Wavelike steel webplate combination T beam uses prestressing with bond reinforcing bar, finds in construction and use
Yet suffer from following deficiency:
1. use prestressing with bond steel bar arrangement mode, by corrugated tube pre-buried in shape of a hoof concrete block at the bottom of beam, in advance
Stay deformed bar pipeline, in construction, often occur that pipeline plug-hole, mud jacking leakiness etc. affect the quality of structure durability and ask
Topic, result in many prestressed concrete continuous beam degree of prestressing not enough, and beam body occurs to continue the problems such as downwarp, and disease occurs
Carry out after evil reinforcing difficulty greatly, become a kind of potential safety hazard.
2. in Wavelike steel webplate combination T beam body, deformed bar can only be arranged in bottom beam rib in shape of a hoof concrete, horse
It is disposed with Wavelike steel webplate shear connector, intensive reinforcing bar and deformed bar pipeline in ungulate concrete block, often occurs mixed
Solidifying soil pours uncompacted situation, affects structural safety.
3., according to structure stress, prestressing force configuration shape should adapt with the moment of flexure under beam External Force Acting, but waveform steel abdomen
In plate T beam body, deformed bar can only be arranged in horseshoe type concrete block at the bottom of beam, it is impossible to bends up neutral axis of the beam in beam end
Above, therefore, the configuration of prestressing with bond reinforcing bar is unreasonable, and causing deformed bar can not effectively utilize.Deformed bar
Being concentrated by pressure acts on shape of a hoof concrete block so that this part stress is excessively concentrated, and is unfavorable for structure entirety stress.
Summary of the invention
The purpose of this utility model is the deficiency existed for prestressing with bond concrete T-shaped beam, propose a kind of external pre-should
Power Wavelike steel webplate T beam, on the basis of common Wavelike steel webplate structure, by arranging external prestressing so that it both had
Common Wavelike steel webplate T girder construction is excellent at aspects such as stress performance, stock utilization, construction safety, economic benefit, durability
Point, the problem that can effectively overcome again above-mentioned precast concrete T-beam to run into, optimize structure stress, simplify component structure, subtract
Lack the consumption of deformed bar, reduce cost；Avoid the stretch-draw duct blocking in prestressing with bond work progress, stretch-draw
The problems such as post jacking is unreal, reduce difficulty of construction, it is ensured that construction quality, accelerate construction speed；And it is prone to the later stage pair
The maintenance and reinforcement of bridge structure.
It is as follows that this utility model realizes the technical scheme that above-mentioned purpose takes: a kind of external prestressing Wavelike steel webplate T beam,
Including concrete roof, concrete floor, end floor beam, Wavelike steel webplate and shear connector, described concrete roof and coagulation
Soil base plate is connected formation T beam section by shear connector with Wavelike steel webplate, and described end floor beam is arranged on T beam two ends end
Portion, is connected with concrete roof, concrete floor, Wavelike steel webplate respectively, it is characterised in that: also include external prestressing tendon and
Transfer, described external prestressing tendon carries out turning at knuckle and being anchored on described end floor beam by transfer.
Transfer described in the utility model includes steering linkage member, the axis of rolling, scroll wheel, described steering linkage member
It is a bending U-shape structure, is symmetrical arranged in the described Wavelike steel webplate left and right sides, and is embedded in T beam concrete floor
Or be connected with lower flange steel plate；The described axis of rolling is supported on steering linkage member, and is connected with steering linkage member, described rolling
Driving wheel is placed on the axis of rolling, limits its displacement by both sides steering linkage member；The described axis of rolling by Wavelike steel webplate and with
Wavelike steel webplate is fixing to be connected.
Wavelike steel webplate described in the utility model is two-sided connection with described top flange steel plate, lower flange slab plate,
Described top flange steel plate is spaced connection and has peg, described lower flange steel plate connects Double Opening steel plate.
End floor beam described in the utility model uses edge of a wing shape open pore steel plate to be connected with Wavelike steel webplate.
This utility model is described end floor beam embedded set prestressed cable anchor, the one of described external prestressing tendon
End is fixed in this prestressed cable anchor.
External prestressing tendon described in the utility model includes external prestressing reinforcing bar and oversheath thereof, and at prestress steel
Anti-corrosion material is irrigated between muscle and oversheath.
This utility model is spaced between described top flange steel plate, lower flange slab plate and arranges diaphragm plate, described horizontal stroke
Dividing plate is horseshoe-shaped structure, is provided with steering gear in the lower end of each diaphragm plate.
Steering gear described in the utility model can be Integral steering device, it is also possible to for separate type steering gear.
This utility model is on the basis of common Wavelike steel webplate structure, by arranging external prestressing so that it both had
There is common Wavelike steel webplate T girder construction excellent at aspects such as stress performance, stock utilization, construction safety, economic benefit, durability
Point, can effectively overcome again the problem that above-mentioned precast concrete T-beam runs into, and has at construction technology, later stage bridge maintaining simultaneously
Clear superiority.There is following significant technique effect:
1.T girder construction form uses Wavelike steel webplate combination, has given full play to concrete and the advantage of waveform Steel material, fall
Low concrete usage amount, decreases Precast T-Beam deadweight, energy-conserving and environment-protective, and economic performance is good, convenient construction and transport, is suitable for scale
Change prefabricated.
2. T girder pre-stressed employing external prestressing tendon, it is easy to occurring after bridge life-time service that disease carries out structural adding
Gu, and the reasonability of structure entirety stress can be effectively ensured.
3. using transfer to achieve folding prestressed rolling to turn to, the frictional resistance that turns to reducing prestressed stretch-draw damages
Losing, device is simple, and cost is low, and effect is obvious.
4. can adjust deformed bar configuration shape according to structure stress, optimize structure stress, decrease prestress steel
The consumption of muscle, reduces construction costs.
5. prestressing with bond reinforcing bar is separated from shape of a hoof concrete block at the bottom of the beam of Wavelike steel webplate T beam, executing
Avoid the problems such as the stretch-draw duct in prestressing with bond work progress blocks, stretch-draw post jacking is unreal during work, reduce
Difficulty of construction, it is ensured that construction quality, accelerates construction speed.
Accompanying drawing explanation
Fig. 1 is that this utility model T beam indulges bridge to cross-sectional view.
Fig. 2 is this utility model T beam top view.
Fig. 3 is this utility model T beam cross-sectional configuration schematic diagram.
Fig. 4 is this utility model steering linkage member U-shaped bar construction schematic diagram.
Fig. 5 is that this utility model end floor beam is connected vertical structure schematic diagram with corrugated steel web.
Fig. 6 is the top view of Fig. 4.
Fig. 7 is longitudinal schematic diagram that this utility model T beam arranges diaphragm plate.
Fig. 8 is steel bundle steering gear longitudinal direction schematic diagram in this utility model diaphragm plate.
In figure: 1 top flange steel plate, 2 Wavelike steel webplates, 3 lower flange steel plates, 4 end floor beams, 5-1 concrete
Top board, 5-2 concrete floor, 6 external prestressing tendons, 7 steering linkage members, 8 axis of rolling, 9 scroll wheels, 10 bolts
Nail, 11 Double Opening steel plates, 12 prestressed cable anchors, 13 diaphragm plates, 14 steering gears.14a inner tube, 14b
Outer tube, 15-transfer, 16-edge of a wing shape open pore steel plate.
Detailed description of the invention
In conjunction with accompanying drawing, provide embodiment of the present utility model as follows, but this utility model does not limit to following example.
As Figure 1-3, the external prestressing Wavelike steel webplate combination T beam described in the present embodiment, described T beam is prefabricated
T-shaped section beam, including concrete roof 5-1, concrete floor 5-2, end floor beam 4, Wavelike steel webplate 2, external prestressing tendon 6 and
Transfer 15.Described concrete roof 5-1 and concrete floor 5-2 is connected to waveform steel abdomen by shear connector respectively
The two ends of plate 2, form T-shaped section beam.Wherein: the shear connector of the opposing horizontal shear that concrete roof 5-1 lower edge is arranged
Including top flange steel plate 1 and peg 10；The shear connector that concrete floor 5-2 upper limb is arranged includes that lower flange steel plate 3 is with double
Open pore steel plate 11.Described Wavelike steel webplate 2 uses double welded joint to be welded to connect, along box beam with described top flange steel plate 1
The peg 10 of longitudinally spaced distribution is welded to connect with described top flange steel plate 1；Described Wavelike steel webplate 2 and described bottom wing
Listrium steel plate 3 uses double welded joint to be welded to connect, Double Opening steel plate 11 and the bottom wing balsh of opposing horizontal shear and transverse bending moment
Plate 3 connects.
Described end floor beam 4 is arranged on end, T beam two ends, respectively with concrete roof 5-1, concrete floor 5-2 and ripple
Shape steel web 2 connects, and is connected, i.e. at end floor beam 4 for employing edge of a wing shape open pore steel plate (16) with the connected mode of Wavelike steel webplate 2
On edge of a wing shape open pore steel plate (as shown in Figure 5, Figure 6) is set.External prestressing tendon 6 is by being embedded in the built-in pipe in end floor beam 4
Through end floor beam, and being anchored on end floor beam, the quantity that arranges of external prestressing tendon 6 determines according to structure stress, can be one
Individual or multiple.In end floor beam 4, the most embedding prestressed cable anchor 12(is as shown in Figure 7), prestressed cable anchor 12 is adopted
Be known products.One end of external prestressing tendon 6 is fixed in prestressed cable anchor 12.Described external prestressing
Rope 6 includes external prestressing reinforcing bar and oversheath thereof, and deformed bar uses epoxy spraying or zinc-plated process, and oversheath uses
High density polyethylene pipe or steel pipe.And anti-corrosion material can be irrigated between deformed bar and oversheath as required.External
Prestressed cable 6 carries out turning at knuckle by transfer 15, and is anchored on end floor beam by prestressed cable.It is subject to according to structure
Power, configuration and the beam bending moment diagram of prestressed cable line style should coincide, and therefore external prestressing arranges position at beam-ends and is: set at beam-ends
Putting in back portion, be arranged on bottom beam at span centre, external prestressing can only realize this configuration by transfer.Described turns
Steering linkage member 7, the axis of rolling 8 and scroll wheel 9 is included to device 15.Steering linkage member 7 be one bend to U-shaped reinforcing bar (as
Shown in Fig. 4), it is symmetrical arranged in the described Wavelike steel webplate left and right sides, is embedded in T beam concrete floor, or and lower flange
Steel plate 3 fixing (welding) connects, and steering linkage member 7 need to arrange two at a turning point, be arranged on the web left and right sides.Described
The axis of rolling 8 be supported on steering linkage member 7, i.e. the axis of rolling passes Wavelike steel webplate, and is welded and fixed with Wavelike steel webplate, rolling
Moving axis 8 two ends are fixed (welding) with the top of steering linkage member 7 and are connected, and are cased with passing for external prestressing tendon 6 on the axis of rolling 8
Scroll wheel 9, limit its displacement by both sides U-shaped reinforcing bar steering linkage member 7.
As shown in Figure 8: when Wavelike steel webplate combination T girder span footpath is bigger, general when girder span is more than 20m, need to be at beam
Midfeather arranges diaphragm plate 13, to strengthen lateral rigidity and the stability of T beam, strengthens the combination horizontal overall performance of T beam.Tabula
Plate 13 is typically arranged at one every 10m.Diaphragm plate is reinforced concrete structure, and during construction, diaphragm plate reinforcing bar is tied up with roof and floor reinforcing bar
Prick together, prefabricated with beam body.The upper flange 5-1 of the adjacent two or more T beams of direction across bridge, diaphragm plate 13, crossbeam are logical
Cross bar connecting, pour cast-in-place concrete and be connected with each other, with satisfied different bridge width requirements.Described diaphragm plate 13 is tied for the shape of a hoof
Structure, being provided with steering gear 14(steering gear in the shape of a hoof lower end of each diaphragm plate 13 is known products).Described steering gear
14 include inner tube 14a and outer tube 14b, and inner tube 14a is HDPE pipe, and outer tube 14b is steel pipe, and inner tube 14a is socketed in outer tube 14b,
Steering gear end is horn mouth, it is therefore an objective to when external prestressing tendon is through steering gear, the protective layer of external prestressing tendon will not be because of
Vibrations for structure are swiped with steel steering gear, destroy protective layer.External prestressing tendon passes through steering gear, cable body and pipeline
Inside face contacts, and both do not fix.Steering gear 14 can be designed as Integral steering device, it is also possible to is designed as separate type and turns to
Device, separate type steering gear is by the pre-stressing tendon of prestressed cable separately, is each passed through steering gear.
The Specific construction step of above-mentioned external prestressing Wavelike steel webplate T beam construction method is as follows:
First, factory or prefabricated place prefabricated Wavelike steel webplate prestressed T beam.Precasting Pedestal Construction is complete, mounting base template,
Colligation baseplate reinforcing bar, in factory by Wavelike steel webplate 2 and top flange steel plate 1, peg 10 and lower flange steel plate 3, Double Opening steel plate
11 are welded as a whole, and put smooth by Wavelike steel webplate structure, install flange template, colligation, colligation roof steel bar, pre-buried turn
To device steering linkage member 7, pour upper plate and lower shoe concrete, and maintenance.
Secondly, transfer is installed in beam rib both sides, is i.e. symmetrical arranged steering linkage member in the Wavelike steel webplate left and right sides
7, it is embedded in T beam concrete floor, or is connected with lower flange steel plate 3 fixing (welding), scroll wheel 9 is installed to roller shaft 8
On, roller shaft 8 is welded on steering linkage member 7 and Wavelike steel webplate 2.External prestressing tendon is installed and passes through transfer,
Draw external prestressing tendon 6 and be anchored in end floor beam 4.
Then, T beam transportation is lifted in Bridge Pier, the concrete roof of adjacent two the T beams of direction across bridge, tabula
Plate and crossbeam are connected with each other by splicing or part cast-in-place concrete；Direction across bridge can be made up of multiple T beams, adjusts concrete top
Plate, diaphragm plate and crossbeam size, meet different bridge deck width.
Finally, vertical bridge connects two across to multispan T beam, formation continuous T structure to cast-in-place concrete.
The construction method of this utility model diaphragm plate is executed with widely used assembled small box girder, Diaphragm of Fabricated T-beam Bridges
Work is the same.Do not repeat them here.
In a word, the foregoing is only preferred embodiment of the present utility model, all according to this utility model claim institute
Impartial change and the modification made, all should belong to the covering scope of this utility model patent.
Claims (8)
1. an external prestressing Wavelike steel webplate T beam, including concrete roof (5-1), concrete floor (5-2), end floor beam
(4), Wavelike steel webplate (2) and shear connector, described concrete roof and concrete floor are by shear connector and waveform
Steel web connects formation T beam section, and described end floor beam is arranged on end, T beam two ends, respectively with concrete roof, concrete bottom
Plate, Wavelike steel webplate connect, it is characterised in that: also include external prestressing tendon (6) and transfer (15), described external pre-should
Power rope carries out turning at knuckle and being anchored on described end floor beam (4) by transfer.
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 1, it is characterised in that: described turns to dress
Putting (15) and include steering linkage member (7), the axis of rolling (8), scroll wheel (9), described steering linkage member is one and bends U-shaped knot
Structure, is symmetrical arranged in the described Wavelike steel webplate left and right sides, and be embedded in T beam concrete floor or with lower flange steel plate
(3) connect；The described axis of rolling is supported on steering linkage member, and is connected with steering linkage member, and described scroll wheel is placed on rolling
On moving axis, limit its displacement by both sides steering linkage member；The described axis of rolling is by Wavelike steel webplate and Wavelike steel webplate
Fixing connection.
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 1, it is characterised in that: described concrete
The shear connector of opposing horizontal shear that top board (5-1) lower edge is arranged includes top flange steel plate (1) and peg (10), described
The shear connector that concrete floor (5-2) upper limb is arranged includes lower flange steel plate (3) and Double Opening steel plate (11), described ripple
Shape steel web (2) is two-sided connection with described top flange steel plate (1), lower flange slab plate (3), at described top flange steel plate
(1) upper interval connection has peg (10), at described lower flange steel plate (3) upper connection Double Opening steel plate (11).
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 1, it is characterised in that: described end floor beam
(4) edge of a wing shape open pore steel plate is used to be connected with Wavelike steel webplate (2).
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 1, it is characterised in that: horizontal at described end
Beam (4) embedded set prestressed cable anchor (12), one end of described external prestressing tendon (6) is fixed on this prestressed cable anchor
It is fixedly mounted with in putting.
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 1, it is characterised in that: described is external pre-
Stress rope (6) includes external prestressing reinforcing bar and oversheath thereof, and irrigates anti-corrosion material between deformed bar and oversheath.
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 3, it is characterised in that: at described upper limb
Between balsh plate (1), lower flange slab plate (3), interval arranges diaphragm plate (13), and described diaphragm plate is horseshoe-shaped structure, often
The lower end of individual diaphragm plate is provided with steering gear (14).
A kind of external prestressing Wavelike steel webplate T beam the most according to claim 7, it is characterised in that: described steering gear
(14) can be Integral steering device, it is also possible to for separate type steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024177.1U CN205474782U (en) | 2015-12-11 | 2015-12-11 | External prestress wave form steel web T roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024177.1U CN205474782U (en) | 2015-12-11 | 2015-12-11 | External prestress wave form steel web T roof beam |
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| Publication Number | Publication Date |
|---|---|
| CN205474782U true CN205474782U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521024177.1U Active CN205474782U (en) | 2015-12-11 | 2015-12-11 | External prestress wave form steel web T roof beam |
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| Country | Link |
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| CN (1) | CN205474782U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086591A (en) * | 2018-02-08 | 2018-05-29 | 湖南工业大学 | Shaped steel-ultra-high performance concrete prestress combined beam |
| CN108842591A (en) * | 2018-06-29 | 2018-11-20 | 东南大学 | Configure the precast segment T beam bridge construction and construction method of internal external pre-stress bundle |
| BE1025239B1 (en) * | 2017-06-26 | 2018-12-18 | Shandong University | A box beam with grid cores |
| CN111676841A (en) * | 2020-06-23 | 2020-09-18 | 华中科技大学 | Anti-cable-falling external prestressed cable steering gear |
-
2015
- 2015-12-11 CN CN201521024177.1U patent/CN205474782U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1025239B1 (en) * | 2017-06-26 | 2018-12-18 | Shandong University | A box beam with grid cores |
| CN108086591A (en) * | 2018-02-08 | 2018-05-29 | 湖南工业大学 | Shaped steel-ultra-high performance concrete prestress combined beam |
| CN108842591A (en) * | 2018-06-29 | 2018-11-20 | 东南大学 | Configure the precast segment T beam bridge construction and construction method of internal external pre-stress bundle |
| CN111676841A (en) * | 2020-06-23 | 2020-09-18 | 华中科技大学 | Anti-cable-falling external prestressed cable steering gear |
| CN111676841B (en) * | 2020-06-23 | 2021-03-09 | 华中科技大学 | Anti-cable-falling external prestressed cable steering gear |
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