CN110359352A - A kind of prefabricated assembled T beam and construction method - Google Patents
A kind of prefabricated assembled T beam and construction method Download PDFInfo
- Publication number
- CN110359352A CN110359352A CN201910710841.4A CN201910710841A CN110359352A CN 110359352 A CN110359352 A CN 110359352A CN 201910710841 A CN201910710841 A CN 201910710841A CN 110359352 A CN110359352 A CN 110359352A
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- wing
- rib
- plate
- lower plate
- prefabricated assembled
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of prefabricated assembled T beam and construction methods, the T beam includes T beam element, the T beam element includes beam rib and wing plate, the wing plate includes wing top plate and two pieces of wing lower plates, two pieces of wing lower plates are respectively arranged at the top two sides of beam rib, and it is made as entirety in advance with the beam rib, the wing top plate laying pours on the top surface of the wing lower plate and beam rib.Prefabricated assembled T beam of the invention have many advantages, such as construction with lift that convenient and efficient, hoisting transportation demand is low, good integrity and span variation range are big；The construction method of the prefabrication and assembly construction of the invention T beam has many advantages, such as that step is simple and convenient to operate and is easy to construct.
Description
Technical field
The present invention relates to bridge construction field more particularly to a kind of prefabricated assembled T beam and construction methods.
Background technique
Packaged type bridges use prefabricated assembled form of construction work, the noise and powder that construction environment does not have general building site often to have
Dirt can be accelerated construction progress significantly without setting up bracket, and construction area area requirements reduce.It is this both to have reduced to big compression ring
The influence in border and road traffic, but the form of construction work for mitigating the interference caused by civil plantation is just gradually led in occupation of bridge construction
Domain.
Packaged type bridges system mainly includes girder and bridge pier, girder frequently with structure be T beam.Existing T is beam prefabricated
Construction is broadly divided into integral prefabricated lifting and segmentation prefabrication and lifting.Integral prefabricated lifting substantially process are as follows: in factory that T beam is whole
Body is prefabricated, after concrete strength reaches design requirement, carries out prestressed stretch-draw using equipment, later by T beam transportation to scene,
Lifting sets up T beam.This mode transports and lifts that weight is larger, higher to the requirement for bearing capacity of transport routes, and big ton
Position Hoisting Security risk is higher, and lifts the span that weight also limits T beam.
It is segmented the substantially process of prefabrication and lifting are as follows: T beam is divided 3~5 sections along longitudinal direction and is prefabricated in the factory respectively, to concrete
It after intensity reaches design requirement, will be segmented near prefabricated T beam transportation to bridge location, after each section of lifting is in place, using internal, external
It is integral that mixing with the mode of beam completes assembled connection, needs dedicated prestress tensioning equipment and grouting equipment in the process, makes
Valence is higher.The concerned process steps such as prestressed stretch-draw are more, and the duration is longer, and since, there are segment, quality is difficult to guarantee on longitudinal direction.
Summary of the invention
Problem to be solved by this invention is, in view of the problems of the existing technology, provides a kind of construction and lifting is convenient
Fast, hoisting transportation demand is low, good integrity and span variation range are big prefabricated assembled T beam and the prefabrication and assembly construction T beam
Construction method.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of prefabricated assembled T beam, including T beam element, the T beam element include beam rib and wing plate, and the wing plate includes
Wing top plate and two pieces of wing lower plates, two pieces of wing lower plates are respectively arranged at the top two sides of beam rib, and are made as in advance with the beam rib
Whole, the wing top plate laying pours on the top surface of the wing lower plate and beam rib.
Further improvement as above-mentioned prefabricated assembled T beam:
The bottom surface of the wing lower plate and the angle α of beam rib side are 90 °~110 °.
It is equipped on the beam rib and wing lower plate from inside and is pierced by the steel stirrup of top surface, the steel stirrup is along T beam
Longitudinal direction it is uniformly distributed.
The diameter of single steel bar is 12~16mm, steel hoop described in two beams longitudinally adjacent along T beam in the steel stirrup
The spacing of muscle is 10~20cm.
The length that the steel stirrup stretches out the top surface of beam rib and wing lower plate is less than the thickness of wing top plate.
The thickness h of the wing top plate is 15~20cm, and the steel stirrup stretches out the length of the top surface of beam rib and wing lower plate
It is 5cm shorter than h.
Form the T beam T beam element be it is multiple, multiple T beam elements transversely splice, two laterally adjacent T
Seam is equipped between beam element, the seam is fixedly connected by the reinforcing bar stretched out from the side of wing lower plate, and is poured and institute
It is integrally fixed to state wing top plate.
The invention also provides a kind of construction method of the prefabrication and assembly construction of above-mentioned prefabricated assembled T beam, step includes:
S1: the beam rib and wing lower plate being prefabricated in the factory in T beam element, in the pre-buried steel hoop in the top surface of beam rib and wing lower plate
Muscle；
S2: the T beam element part of prefabricated completion is transported to construction site, and live bridge pier has been constructed completion at this time, is hung
The T beam element part for filling prefabricated completion is allowed to set up in place；
S3: dabbing and the top surface for cleaning beam rib and wing lower plate are laid with steel mesh, are laid with pour wing top plate later, make wing top
Plate is fixed with beam rib and wing lower plate；
S4: the construction of appurtenant work is completed.
Further improvement as above-mentioned construction method:
The wing plate is equipped with hole for hoist no more than the place 1m in distance T beam symmetry axis, lifting rope across the hole for hoist and
Bundle beam rib bottom.
The concrete grade of the wing top plate is not less than the concrete grade of beam rib and wing lower plate.
Compared with the prior art, the advantages of the present invention are as follows:
The present invention proposes that a kind of prefabricated assembled T beam, wing plate are arranged to the form of overlapping, includes wing top plate and two pieces
Wing lower plate.Wherein, two pieces of wing lower plates are identical as present T beam standard, are set to the top two sides of beam rib and are made as in advance with beam rib
It is whole, and wing top plate is then after beam rib and the prefabricated completion of wing lower plate, laying is poured in wing lower plate and beam rib top surface, later
And together stress fixed with wing lower plate and beam rib.
This setup only can lift beam rib and wing lower plate in lifting, re-lay after setting up in place
Wing top plate.Lifting weight mitigates significantly, low to the requirement for bearing capacity of transport routes, reduces Hoisting Security risk, and will not
Because lifting weight limits span, therefore segment need not be also set in the longitudinal direction, destroy the vertical structure of beam body, globality and quality
It is all higher.Further, since not destroying the part for needing to carry out prestressed stretch-draw and grouting, therefore dedicated prestressing force is not needed
Tensioning equipment and grouting equipment, cost is relatively low.
The present invention further correspondingly provides a kind of construction method of the prefabrication and assembly construction of T beam, passes through simple step and simplicity
Operating process can be realized the prefabricated of above-mentioned T beam and assembly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pre-erection in prefabricated assembled T beam of the invention；
Fig. 2 is the structural schematic diagram of prefabricated assembled T beam of the invention；
Fig. 3 is the horizontally-spliced structural schematic diagram of multiple prefabricated assembled T beams.
Marginal data: 1, beam rib；2, wing plate；21, wing top plate；22, wing lower plate；3, steel stirrup.
Specific embodiment
To facilitate the understanding of the present invention, invention herein is done below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but protection scope of the present invention is not limited to following specific embodiments.
Embodiment:
As depicted in figs. 1 and 2, the prefabricated assembled T beam of the present embodiment, including T beam element, T beam element include 1 He of beam rib
Wing plate 2, wing plate 2 include wing top plate 21 and two pieces of wing lower plates 22, wherein and two pieces of wing lower plates 22 are identical as present T beam standard, if
It is placed in the top two sides of beam rib 1 and is made as entirety in advance with beam rib 1, and wing top plate 21 is then prefabricated complete in beam rib 1 and wing lower plate 22
At later, laying is poured on the top surface of wing lower plate 22 and beam rib 1, fixed with wing lower plate 22 and beam rib 1 later and stress together.
This setup only can lift beam rib 1 and wing lower plate 22 in lifting, after setting up in place again
It is laid with wing top plate 21.Lifting weight mitigates significantly, low to the requirement for bearing capacity of transport routes, reduces Hoisting Security risk, and
And will not limit span because of lifting weight, therefore segment need not be also set in the longitudinal direction, destroy the vertical structure of beam body, globality
It is all higher with quality.Further, since not destroying the part for needing to carry out prestressed stretch-draw and grouting, therefore do not need dedicated
Prestress tensioning equipment and grouting equipment, cost is relatively low.The set-up mode of the present embodiment makes T beam not only and can be adapted for 50 meters
Standard span bridge, it might even be possible to be suitable for the bridge of more Long span beyond the range, can subtract in the case where bridge is long constant
Few bridge pier quantity, has apparent cost advantage.
In the present embodiment, the angle α of the bottom surface of wing lower plate 22 and 1 side of beam rib is 90 °~110 °, and right angle or obtuse angle are set
The mode of setting keeps pre-erection more easy to manufacture, and while lifting is not easily susceptible to destroy.
In the present embodiment, it is equipped on beam rib 1 and wing lower plate 22 from inside and is pierced by the steel stirrup 3, Dang Yiding of top surface
After the completion of plate 21 pours, wing top plate 21 is firmly firmly grasped in the part stretched out in steel stirrup 3, enhances the integraty of T beam and consolidates
Property；Steel stirrup 3 is uniformly distributed along the longitudinal direction of T beam, makes T beam integrally can stress and more stable power transmission more evenly.This reality
It applies in example, the diameter of single steel bar is 12~16mm, the spacing of the two beam steel stirrups 3 longitudinally adjacent along T beam in steel stirrup 3
It can also regard production in other embodiments for 10~20cm and applicable cases carry out appropriate adjustment.
In the present embodiment, the length that steel stirrup 3 stretches out the top surface of beam rib 1 and wing lower plate 22 is less than the thickness of wing top plate 21
Degree prevents steel stirrup 3 from influencing the planarization of top surface of wing top plate 21, avoids the later period from handling the part exceeded, may be used also
To prevent steel stirrup 3 from corroding.In the present embodiment, the thickness h of wing top plate 21 is 15~20cm, and steel stirrup 3 stretches out 1 He of beam rib
The length ratio short 5cm of h of the top surface of wing lower plate 22 can also regard production and applicable cases carry out suitably in other embodiments
Adjustment.
In the present embodiment, as shown in figure 3, when being suitable for the bridge of different in width, it can be common using multiple T beam elements
T beam is formed, multiple T beam elements transversely splice, and seam is equipped between two laterally adjacent T beam elements.Seam is by from the wing
The reinforcing bar that the side of lower plate 22 is stretched out is fixedly connected, and is poured and fixed with 21 one of wing top plate, is strengthened between each unit
Integraty, improve the integral strength of T beam, and Joining Technology is mature, reliable performance is cheap.
The construction method of the above-mentioned T beam of the prefabrication and assembly construction of the present embodiment passes through simple step and easy operating process
The prefabricated of above-mentioned T beam and assembly can be realized, step includes:
S1: the beam rib 1 and wing lower plate 22 being prefabricated in the factory in T beam element, in the top surface pre-buried steel of beam rib 1 and wing lower plate 22
Stirrup 3 processed；
S2: the T beam element part of prefabricated completion is transported to construction site, and live bridge pier has been constructed completion at this time, is hung
The T beam element part for filling prefabricated completion is allowed to set up in place；
S3: dabbing and the top surface for cleaning beam rib 1 and wing lower plate 22 are laid with steel mesh, are laid with pour wing top plate 21 later, make
Wing top plate 21 and beam rib 1 and wing lower plate 22 are fixed；
S4: the construction of appurtenant work is completed.
In the present embodiment, wing plate 2 passes through lifting no more than hole for hoist, lifting rope is equipped at 1m in distance T beam symmetry axis
Hole and binding 1 bottom of beam rib, make to be completely fixed in T beam hoisting process, and each section reasonable stress, avoid being destroyed.
In the present embodiment, the concrete grade of wing top plate 21 is not less than the concrete grade of beam rib 1 and wing lower plate 22, with benefit
In effective combination of wing top plate 21 and beam rib 1 and wing lower plate 22；In the present embodiment, wing top plate 21, beam rib 1 and wing lower plate 22 it is mixed
Solidifying soil label is not less than C40.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.For those skilled in the art, obtained modifications and variations under the premise of not departing from technical concept of the invention
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of prefabricated assembled T beam, including T beam element, the T beam element include beam rib (1) and wing plate (2), feature exists
In: the wing plate (2) includes wing top plate (21) and two pieces of wing lower plates (22), and two pieces of wing lower plates (22) are respectively arranged at beam rib
(1) top two sides, and it is made as entirety in advance with the beam rib (1), the wing top plate (21) is laid with and pours in the wing lower plate
(22) and on the top surface of beam rib (1).
2. prefabricated assembled T beam according to claim 1, it is characterised in that: the bottom surface of the wing lower plate (22) and beam rib
(1) angle α of side is 90 °~110 °.
3. prefabricated assembled T beam according to claim 1, it is characterised in that: on the beam rib (1) and wing lower plate (22)
Equipped with being pierced by from inside to the steel stirrup (3) of top surface, the steel stirrup (3) is uniformly distributed along the longitudinal direction of T beam.
4. prefabricated assembled T beam according to claim 3, it is characterised in that: single steel bar in the steel stirrup (3)
Diameter is 12~16mm, and the spacing of steel stirrup (3) described in two beams longitudinally adjacent along T beam is 10~20cm.
5. prefabricated assembled T beam according to claim 1, it is characterised in that: the steel stirrup (3) stretches out beam rib (1)
It is less than the thickness of wing top plate (21) with the length of the top surface of wing lower plate (22).
6. prefabricated assembled T beam according to claim 5, it is characterised in that: the thickness h of the wing top plate (21) be 15~
20cm, the steel stirrup (3) stretch out the short 5cm of length ratio h of the top surface of beam rib (1) and wing lower plate (22).
7. prefabricated assembled T beam according to claim 1, it is characterised in that: form the T beam T beam element be it is multiple,
Multiple T beam elements transversely splice, and seam are equipped between two laterally adjacent T beam elements, the seam is by from the wing
The reinforcing bar that the side of lower plate (22) is stretched out is fixedly connected, and is poured integrally fixed with the wing top plate (21).
8. a kind of construction method of the prefabrication and assembly construction of the prefabricated assembled T beam as described in any one of claims 1 to 7, step
Suddenly include:
S1: the beam rib (1) and wing lower plate (22) being prefabricated in the factory in T beam element, it is pre- in the top surface of beam rib (1) and wing lower plate (22)
Bury steel stirrup (3)；
S2: the T beam element part of prefabricated completion is transported to construction site, and live bridge pier has been constructed completions at this time, and lifting is in advance
The T beam element part completed is made, is allowed to set up in place；
S3: dabbing and the top surface for cleaning beam rib (1) and wing lower plate (22) are laid with steel mesh, are laid with pour wing top plate (21) later,
Keep wing top plate (21) and beam rib (1) and wing lower plate (22) fixed；
S4: the construction of appurtenant work is completed.
9. construction method according to claim 8, it is characterised in that: the wing plate (2) is not more than in distance T beam symmetry axis
Hole for hoist is equipped at 1m, lifting rope passes through the hole for hoist and binding beam rib (1) bottom.
10. construction method according to claim 8, it is characterised in that: the concrete grade of the wing top plate (21) is not low
In the concrete grade of beam rib (1) and wing lower plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910710841.4A CN110359352A (en) | 2019-08-02 | 2019-08-02 | A kind of prefabricated assembled T beam and construction method |
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| CN201910710841.4A CN110359352A (en) | 2019-08-02 | 2019-08-02 | A kind of prefabricated assembled T beam and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820514A (en) * | 2019-11-25 | 2020-02-21 | 西南交通大学 | T-beam structure for high-speed railway long-span bridge and long-span bridge |
| CN111794074A (en) * | 2020-07-07 | 2020-10-20 | 浙江华东工程咨询有限公司 | Arch bridge concrete beam and beam forming method thereof |
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| CN111794074A (en) * | 2020-07-07 | 2020-10-20 | 浙江华东工程咨询有限公司 | Arch bridge concrete beam and beam forming method thereof |
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Application publication date: 20191022 |