CN205474784U - Prefabricated T roof beam - Google Patents
Prefabricated T roof beam Download PDFInfo
- Publication number
- CN205474784U CN205474784U CN201620129039.8U CN201620129039U CN205474784U CN 205474784 U CN205474784 U CN 205474784U CN 201620129039 U CN201620129039 U CN 201620129039U CN 205474784 U CN205474784 U CN 205474784U
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- longeron
- floorings
- precast
- prefabricated
- bridge
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Abstract
The utility model discloses a prefabricated T roof beam, it includes decking, longeron and steel cross slab, decking, longeron be prefabricated component, the gomphosis is connected between the adjacent decking, the upper end position equipartition that lies in the longeron at the decking has the preformed hole, the roof beam of longeron is internal to be provided with pre -buried spiral, is provided with pre -buried steel sheet in the longeron side, and reason on the decking after assembling need be stretched out to the length of pre -buried spiral, steel cross slab and longeron on pre -buried steel sheet fixed connection. The construction method: prefabricated decking, longeron, hoist on the bridge pier back with the longeron, carry out being connected of steel cross slab and longeron, place the decking above the longeron, the gomphosis is connected between the adjacent decking, to filling the epoxy mortar concrete in the preformed hole. It is separately prefabricated through decking with the T roof beam and longeron part, effectively overcome concrete T roof beam and assembled the wet seam problem that meets.
Description
Technical field
This utility model relates to Highway bridge technique field, more particularly, to be a kind of novel Precast T-Beam.
Background technology
T-shaped beam be in Highway Assembling Type bridge through frequently with a kind of upper structure type.Compared with the prefabricated structure that cored slab, small box girder both are commonly used, the section efficiency index of T-shaped beam is the highest, and economic span is maximum；Compared with cast-in-situ continuous beam, Precast T-Beam uses " simple-supported thencontinuous construction " method, the batch Prefabrication of simply supported beam and the superior function of continuous beam are combined, the mode realizing batch Prefabrication accelerates the construction of continuous beam, reduce difficulty of construction, ensure that construction quality, accelerate construction speed, reduce construction costs.
But, existing Fabricated T-beam still suffers from some shortcomings in construction with during using:
The wettest seam is the narrowest, and working space is little, and the reinforcing bar binding of wet seam crossing is wasted time and energy, and top board wet seam root edge needs support shuttering, and field operation difficulty of construction is big.
2. beam body is from great, requires higher to transporting equipment and hanging device.
It is poor to there is the age of concrete in the bond between fresh and hardened concretes position of the wettest seam, causes New-old concrete to produce shrinkage and creep poor, easily causes rear pouring concrete and ftractures at pre-erection interface, and then affects into the structure stress of bridge operational phase bridge.
4. increasing along with traffic flow, existing highway bridge is when facing overload condition, and wet seam is more prone to destroy, and causes the situation of single slab bearing, affect the bearing capacity of bridge, and the safety generation to structure is unfavorable, is greatly shortened the service life of bridge.
Summary of the invention
The purpose of this utility model is the deficiency existed for existing Fabricated T-beam, it is proposed that a kind of novel Precast T-Beam.By the floorings of T beam are the most prefabricated with rail portion, solve concrete T-shaped beam transport and the problem such as wet seam disease during construction equipment requirement joint work face high, wet little causes construction quality to be difficult to ensure, pouring concrete causes shrinkage and creep internal force poor because of age difference and runs afterwards after wet seam crossing, reach to be readily transported and install, reduce difficulty of construction, reduce construction period, improve construction quality, the purpose of enhancing bridge useful life longevity.
It is as follows that this utility model realizes the technical scheme that above-mentioned purpose takes:
Novel Precast T-Beam of the present utility model includes floorings, longeron and steel diaphragm plate, and described floorings, longeron are prefabricated components, is fitting to connection between described adjacent bridge panel, and the upper-end part of driving being positioned at longeron at floorings is evenly equipped with preformed hole；Being provided with pre-buried spiral in the beam body of described longeron, be provided with pre-embedded steel slab in longeron side, the length of pre-buried spiral need to stretch out the floorings upper limb after assembly, and described steel diaphragm plate is fixing with pre-embedded steel slab on longeron to be connected.
The horizontal width prefabricated of floorings described in the utility model is bridge deck width, and longitudinal width prefabricated is one to two meter.
Longitudinal precast length of longeron described in the utility model is bridge single span length, and horizontal width prefabricated is Precast T-Beam web width.
Pre-buried spiral described in the utility model comprises two groups, often organize and all comprise multiple pre-buried spiral, symmetry is embedded in beam body in advance, and two rows organize pre-buried spiral spacing and are not less than 20cm, can stretch out floorings upper limb 1-2 centimetre after a length of assembly of pre-buried spiral.
Preformed hole described in the utility model is through-hole structure, and aperture is more than pre-buried spiral diameter 2-3 centimetre.
Prefabricated bridge one end described in the utility model is provided with tongue, and other end arranges groove, is connected by tongue and groove fit between adjacent bridge panel.
When longeron described in the utility model is side bar component, pre-embedded steel slab inside longitudinal-beam web plate；When longeron is middle beam, pre-embedded steel slab, the equal pre-embedded steel slab in middle longitudinal-beam web plate both sides inside described steel diaphragm plate and limit longitudinal-beam web plate, vertical bridge arranges steel diaphragm plate to every 5-10m.
This utility model is by the most prefabricated with rail portion by the floorings of T beam, and floorings part can be according to bridge width, prefabricated in bulk, longitudinally can be made as every linear meter(lin.m.) one piece in advance, arranges preformed hole, and by longeron embedded bar, is connected with longeron by floorings；Floorings vertical bridge to, docked by reserved tongue and groove；Vertical bridge arranges steel diaphragm plate to every a segment distance, strengthens beam body rigidity；It had both had general T girder construction in aspect advantages such as stress performance, stock utilization, construction safety, economic benefit, durability, achieves again the most prefabricated of beam body, effectively overcomes the wet seam problems that concrete T-shaped beam assembly runs into.At construction technology, later stage bridge maintaining, there is clear superiority simultaneously.
This utility model, owing to using above technical scheme, has a following significant beneficial effect:
1. each combined member of this T beam all uses precast construction, and prefabricated components are from heavy and light, and volume is little, it is simple to transport and install.
2. achieve the most prefabricated of beam body, it is to avoid the shrinkage and creep difference problem that wet seam causes because of the age difference of New-old concrete.
3. in work progress, it is not necessary to carry out cast in situs, reduce difficulty of construction, decrease construction period, it is ensured that construction quality.
4. overcome the deficiency of the wet seam crossing of Fabricated T-beam, solve single slab bearing problem, make floorings form an entirety, effectively solve wet seam Problems of Longitudinal Cracks, strengthen the durability that bridge uses.
5. top flange plate is connected by embedded bar with web, and at preformed hole concrete perfusion, structural integrity is preferable.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is this utility model standard section schematic diagram.
Fig. 3 is the horizontal schematic diagram of this utility model longeron.
Fig. 4 is the horizontal schematic diagrams of this utility model floorings.
Fig. 5 is this utility model floorings schematic top plan view.
Fig. 6 is this utility model floorings longitudinal direction sectional schematic diagram.
Fig. 7 is this utility model shear connector schematic diagram.
1 floorings, 2 longerons, 3 steel diaphragm plates, 4 pre-buried spirals, 5 preformed holes, 6 epoxy resin mortar concrete, 7 tongues, 8 grooves, 9 pre-embedded steel slabs in figure.
Detailed description of the invention
This utility model is further described below with reference to embodiment (accompanying drawing).
In this utility model, in the case of illustrating on the contrary, the noun of locality of use such as " longitudinally " refers to the length direction of bridge, and " laterally " refers to the width of bridge.
As shown in Figure 1, 2, the Precast T-Beam described in the present embodiment includes floorings 1, longeron 2, shear connector and steel diaphragm plate 3, and described floorings, longeron are prefabricated components；The horizontal width prefabricated of floorings is that bridge deck width, longitudinal width prefabricated can determine according to traffic condition, it is proposed that between 1-2 rice, longitudinal width prefabricated takes one meter, is to transport for convenience, it is possible to increases according to traffic condition or reduces.Chamfering is set at the T web of floorings 1, to solve problem of stress concentration.Floorings 1 keep level with the interface of longeron 2, and the interface width of floorings is not less than longeron width.
Described floorings 1 are indulged bridge and are provided with tongue 7 to one end, other end be groove 8(as seen in figs. 5-6), mutually embedding by concave, convex groove of adjacent two pieces of floorings, it is achieved floorings vertical bridge to compact siro spinning technology.Other connected mode can also be used, as long as making can be fitting to connection between adjacent bridge panel (1).The upper-end part of driving being positioned at longeron 2 at floorings is distributed with preformed hole 5(as illustrated in figures 4-5), described preformed hole 5 is through-hole structure, and its vertical and horizontal setting space is consistent with pre-buried spiral.The aperture of preformed hole 5 is more than pre-buried spiral diameter 2-3 centimetre.
Longitudinal precast length of described longeron 2 be bridge single span length, horizontal width prefabricated be Precast T-Beam web width.It is provided with pre-buried spiral 4 in the beam body of described longeron 2, is provided with pre-embedded steel slab 9(in longeron side as Figure 2-3), substructure of described longeron is the shape of a hoof, or is rectangle.Longeron size (deck-molding, deck-siding, top board thickness, web thickness, chamfer dimesion etc.) calculates according to external force and determines.
Described pre-buried spiral 4 is arranged in beam body web, and pre-buried spiral 4 comprises two groups, often organizes and all comprises multiple pre-buried spiral 4, and symmetry is embedded in beam body in advance, and two rows organize pre-buried spiral spacing not less than 20cm.Floorings upper limb can be stretched out after a length of assembly of pre-buried spiral 4, need after the assembly of the most pre-buried spiral 4 to stretch out floorings 1 upper limb 1-2 centimetre.Described pre-embedded steel slab 9 is embedded in beam body one or both sides (the web one or both sides of longeron 2) in advance, is connected for fixing with steel diaphragm plate 3.Arranging number and need to determine according to floorings width and Force Calculation due to longeron 2, girder space is between 2.2-2.7 rice.When longeron 2 is as side bar component, pre-embedded steel slab inside longitudinal-beam web plate.When longeron 2 is middle beam, the equal pre-embedded steel slab in web both sides of longeron 2.Described steel diaphragm plate welds with pre-embedded steel slab, middle longitudinal-beam web plate both sides pre-embedded steel slab inside the longitudinal-beam web plate of limit, and vertical bridge arranges steel diaphragm plate to every a segment distance.
After the described pre-buried spiral of longeron 24 passes the preformed hole 5 of floorings 1, in preformed hole, irrigate epoxy resin mortar concrete 6, form shear connector (as shown in Figure 7).Floorings upper limb 1-2 centimetre can be stretched out after the described pre-spiral assembly being embedded in longeron.
The Specific construction step of above-mentioned novel T beam construction method is as follows:
First, according to Bridge Design requirement, factory or prefabricated place prefabricated bridge, longeron.
Secondly, by longeron transporting and hoisting in Bridge Pier after, carry out being welded to connect of steel diaphragm plate.When longeron 2 is as side bar component, pre-embedded steel slab inside longitudinal-beam web plate.When longeron 2 is middle beam, described steel diaphragm plate welds with pre-embedded steel slab, middle longitudinal-beam web plate both sides pre-embedded steel slab inside the longitudinal-beam web plate of limit, and vertical bridge arranges steel diaphragm plate to every 5-10m.
Then, according still further to preformed hole and pre-buried spiral correspondence position, floorings are positioned over tram, it is ensured that longeron is reserved screw-thread steel and passed upper floorings preformed hole, can stretch out floorings upper limb 1-2 centimetre after the described pre-spiral assembly being embedded in longeron.Vertical bridge is mutually the most embedding with groove by tongue to every piece of prefabricated bridge.
Finally, to longeron pre-buried spiral assembly insert floorings preformed hole in irrigate epoxy resin mortar concrete 6, then carry out routine limit guardrail, mat formation, waterproof layer and construction, make bridge meet use requirement.
Claims (7)
1. a Precast T-Beam, including floorings (1), longeron (2) and steel diaphragm plate (3), it is characterized in that: described floorings, longeron are prefabricated components, being fitting to connection between adjacent bridge panel, the upper-end part of driving being positioned at longeron at floorings is evenly equipped with preformed hole (5)；Pre-buried spiral (4) it is provided with in the beam body of described longeron, pre-embedded steel slab (9) it is provided with in longeron side, the length of pre-buried spiral need to stretch out the floorings upper limb after assembly, and described steel diaphragm plate (3) is fixing with pre-embedded steel slab on longeron (9) to be connected.
Precast T-Beam the most according to claim 1, it is characterised in that: the horizontal width prefabricated of described floorings (1) is bridge deck width, and longitudinal width prefabricated is one to two meter.
Precast T-Beam the most according to claim 1, it is characterised in that: longitudinal precast length of described longeron (2) is bridge single span length, and horizontal width prefabricated is Precast T-Beam web width.
Precast T-Beam the most according to claim 1, it is characterized in that: described pre-buried spiral (4) comprises two groups, often organize and all comprise multiple pre-buried spiral (4), symmetry is embedded in beam body in advance, two rows organize pre-buried spiral spacing and are not less than 20cm, can stretch out floorings (1) upper limb 1-2 centimetre after a length of assembly of pre-buried spiral.
Precast T-Beam the most according to claim 1, it is characterised in that: described preformed hole (5) is through-hole structure, and aperture is more than pre-buried spiral (4) diameter 2-3 centimetre.
Precast T-Beam the most according to claim 1, it is characterised in that: described prefabricated bridge (1) one end is provided with tongue (7), and other end arranges groove (8), is connected by tongue (7) and groove (8) between adjacent bridge panel.
Precast T-Beam the most according to claim 1, it is characterised in that: when described longeron (2) is side bar component, pre-embedded steel slab inside longitudinal-beam web plate；When longeron (2) is middle beam, pre-embedded steel slab, the equal pre-embedded steel slab in middle longitudinal-beam web plate both sides inside described steel diaphragm plate and limit longitudinal-beam web plate, vertical bridge arranges steel diaphragm plate to every 5-10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620129039.8U CN205474784U (en) | 2016-02-19 | 2016-02-19 | Prefabricated T roof beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620129039.8U CN205474784U (en) | 2016-02-19 | 2016-02-19 | Prefabricated T roof beam |
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| Publication Number | Publication Date |
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| CN205474784U true CN205474784U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620129039.8U Withdrawn - After Issue CN205474784U (en) | 2016-02-19 | 2016-02-19 | Prefabricated T roof beam |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603860A (en) * | 2016-02-19 | 2016-05-25 | 河南省交通规划设计研究院股份有限公司 | Prefabricated T beam and construction method |
| CN107217601A (en) * | 2017-07-18 | 2017-09-29 | 中交第二航务工程局有限公司 | A kind of I beam bridges panel construction method |
| CN107542039A (en) * | 2017-10-10 | 2018-01-05 | 储君 | A kind of bridge floor laying method |
| CN109797661A (en) * | 2019-03-25 | 2019-05-24 | 东南大学 | Assembled FRP arrangement of reinforcement seawater marine sand concrete-UHPC composite girder bridge structure and method of construction |
| CN111622105A (en) * | 2020-06-10 | 2020-09-04 | 中南大学 | Manufacturing method of shear key mold and bridge deck pavement structure |
| CN111636286A (en) * | 2020-05-12 | 2020-09-08 | 济南市市政工程设计研究院（集团）有限责任公司 | Pretensioned broken line prestressed I-beam bridge and construction method |
| CN113832849A (en) * | 2021-08-31 | 2021-12-24 | 任小强 | Bridge structure of continuous rigid frame steel truss combination |
-
2016
- 2016-02-19 CN CN201620129039.8U patent/CN205474784U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603860A (en) * | 2016-02-19 | 2016-05-25 | 河南省交通规划设计研究院股份有限公司 | Prefabricated T beam and construction method |
| CN107217601A (en) * | 2017-07-18 | 2017-09-29 | 中交第二航务工程局有限公司 | A kind of I beam bridges panel construction method |
| CN107542039A (en) * | 2017-10-10 | 2018-01-05 | 储君 | A kind of bridge floor laying method |
| CN109797661A (en) * | 2019-03-25 | 2019-05-24 | 东南大学 | Assembled FRP arrangement of reinforcement seawater marine sand concrete-UHPC composite girder bridge structure and method of construction |
| CN109797661B (en) * | 2019-03-25 | 2020-08-11 | 东南大学 | Fabricated FRP reinforcement seawater sea sand concrete-UHPC superposed beam bridge structure and construction method |
| CN111636286A (en) * | 2020-05-12 | 2020-09-08 | 济南市市政工程设计研究院（集团）有限责任公司 | Pretensioned broken line prestressed I-beam bridge and construction method |
| CN111622105A (en) * | 2020-06-10 | 2020-09-04 | 中南大学 | Manufacturing method of shear key mold and bridge deck pavement structure |
| CN111622105B (en) * | 2020-06-10 | 2021-12-07 | 中南大学 | Manufacturing method of shear key mold and bridge deck pavement structure |
| CN113832849A (en) * | 2021-08-31 | 2021-12-24 | 任小强 | Bridge structure of continuous rigid frame steel truss combination |
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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 |
Granted publication date: 20160817 Effective date of abandoning: 20170503 |
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| AV01 | Patent right actively abandoned |