CN207331424U - Steel skeleton prestressed concrete beam - Google Patents
Steel skeleton prestressed concrete beam Download PDFInfo
- Publication number
- CN207331424U CN207331424U CN201720344053.4U CN201720344053U CN207331424U CN 207331424 U CN207331424 U CN 207331424U CN 201720344053 U CN201720344053 U CN 201720344053U CN 207331424 U CN207331424 U CN 207331424U
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- steel skeleton
- prestressed
- concrete beam
- prestressed anchor
- concrete
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Abstract
The utility model discloses a kind of novel steel skeleton prestressed concrete beam, including high-strength concrete, prestressed anchor, reinforcing bar system and concrete beam body in steel skeleton, prestress pipe, prestressed cable, prestress pipe, steel skeleton forms a stress system for being similar to English truss with prestress system, enhance the bending resistance of beam, increase the bearing capacity of beam body, applied to bridge, building and other field, the design bearing capacity of beam body can strengthen can further increase with across footpath.The purpose of this utility model be to provide it is a kind of it is simple and practicable, bending resistance is strong, high capacity, span are big, cost-effective novel prefabricated concrete beam.
Description
Technical field
A kind of bridge structure is the utility model is related to, relates in particular to a kind of steel skeleton prestressed concrete beam.
Background technology
Prestressed concrete beam：Beam, which is previously applied, makes it produce the power of hogging moment in span centre, is made with partial offset beam
Sagging moment in.
Prestressed reinforced concrete construction avoids concrete structure crack from occurring too early, makes full use of high strength cast iron and height
Strength concrete, tries in structural elements before by load action, it is produced precompression to reduce or offset caused by load
Concrete pulling force, makes it be substantially at pressured state.
At present, prestressed concrete is mainly used in：（1）It is required that the structure that classes for cracking control is higher；（2）Large span or
The larger component of stress；（3）The more demanding component of rigidity and Deformation control to structure.
Prestressing force beam action：
1st, using high-strength tensile prestressed material, the weight bearing power of beam can be increased；
2nd, under equal load action, sectional dimension can be reduced using prestressed beam, mitigate dead weight；
3rd, because beam has prestressing force, the crack problem with regular reinforcement beam is substantially overcomed.
Existing prestressed concrete beam is the technology of comparative maturity, and beam can be improved by adding prestressing force in beam body
Bearing capacity, and reduce volume and the section of beam.Current prestressed concrete beam rarely exceeds 30 meters of across footpaths, to adapt to
The demand of large span, it has to using other designs；And as usage time extends, under load action, prestress steel
Rope can creep, and inverted camber reduces, and the bearing capacity of beam declines, and destruction ramps up.
Utility model content
To solve the above problems, the utility model provides a kind of steel skeleton prestressed concrete beam, including steel skeleton, in advance should
Hydraulic piping, prestressed anchor, anti-push rod, prestressed cable, reinforcing bar system, concrete beam body and high-strength polyester fibers mortar, it is described
Beams of concrete both ends are prestressing force prestressed anchor, it is characterised in that
More Pin steel skeleton constructions are set in the beams of concrete body, at beam body both ends and the prestressing force prestressed anchor phase
It is fixedly connected,
The steel skeleton, can determine Pin numbers, the steel skeleton is formed by connecting by more Pin, can basis according to the length of beam
The length independent assortment of beam；
Within 45 degree to 90 degree, the steel skeleton can use Q235 or Q345 steel, also can root at the steel skeleton top clip angle
Select other steel grades according to actual conditions, it is described per Pin steel skeletons by welding forming, it is described per Pin steel skeleton soles on reserve it is pre-
Stress pipe hole and bolt hole；
The every two Pin junctions of steel skeleton are equipped with prestress pipe hole；
The steel skeleton is equipped with anti-push rod at beam both ends and prestressed anchor junction.
Further, the steel skeleton and prestressed anchor,
The steel skeleton is connected with prestressed anchor using high-strength bolt.
Further, the steel skeleton and prestressed anchor,
Steel skeleton and the prestressed anchor junction, equipped with anti-push rod.
Further, the prestressed cable and prestress pipe,
The prestress pipe is after prestressed cable tensioning is completed, pressure injection high-strength mortar.
Preferably, pressure injection high-strength polyester fibers mortar in the prestress pipe.
The utility model has the advantage of：
1st, the steel skeleton prestressed concrete beam of the utility model, because of steel skeleton and prestressed cable composition truss structure, increases
Big beam body rigidity and bearing capacity.
2nd, the steel skeleton prestressed concrete beam of the utility model, can because of steel skeleton and prestressed cable composition truss structure
Further to increase span of bridge.
3rd, the utility model uses high-strength polyester fibers mortar pressure injection prestress pipe, enhances the durability of prestressed cable
And tolerance.
4th, the utility model is using the more Pin independent assortments of steel skeleton, suitable for the beams of concrete of different across footpaths.
5th, more Pin steel skeleton constructions of the utility model can be applicable in various shapes by varying the shapes and sizes of single Pin
With the beams of concrete of type.
Brief description of the drawings
Fig. 1 is the utility model steel skeleton prestressed concrete beam dimensional structure diagram；
Fig. 2 is that the utility model has stable joist steel skeleton system schematic longitudinal section；
Fig. 3 is the utility model without stablizing joist steel skeleton system schematic longitudinal section；
Fig. 4 is the utility model anchored end dimensional structure diagram；
Wherein, 1- steel skeletons, 2- prestress pipes, 3- prestressed anchors, the anti-push rods of 4-, 5- reinforcing bars, 6- beams of concretes,
7- steel skeletons sole, 8- stablize beam, 31- prestressed anchors plate, 32- prestressed cables, 33- connections bolt, 34- pressure-proof springs.
Embodiment
The utility model is described further below in conjunction with attached drawing.
According to the dimensional structure diagram of Fig. 1 the utility model steel skeleton prestressed concrete beams, the utility model provides
A kind of steel skeleton prestressed concrete beam, including it is steel skeleton 1, prestress pipe 2, prestressed anchor 3, anti-push rod 4, reinforcing bar 5, mixed
Solidifying soil beam body 6, the steel skeleton 1 are connected to prestressed anchor 2 in beam bolts at two ends, pass through bolt and other steel per Pin steel skeletons
Skeleton connects.Reinforcing bar 5 is furnished with outside the steel skeleton.Complete steel skeleton, reinforcing bar, prestress pipe, prestressed cable and prestressed anchor
After tool installation, concreting is carried out, after the completion of pouring, carries out prestressed cable tensioning.The 1 top clip angle of steel skeleton should be at 45 degree
To between 90 degree.
Stable joist steel skeleton system schematic longitudinal section is had and without stablizing joist steel skeleton according to Fig. 2 and Fig. 3 the utility model
System schematic longitudinal section, there is provided have stable 7 steel skeleton of beam and without stablizing two kinds of patterns of joist steel skeleton.Without stablizing joist steel skeleton
Fixation can be connected with outer reinforcement 5.
According to Fig. 4 the utility model anchored end dimensional structure diagrams, beam both ends steel skeleton and prestressed anchor phase
Sole 7 even is equipped with two anti-push rods 4.Beam both ends sole is between prestressed anchor plate 31 and pressure-proof spring 34.
After thering is prestressed cable 32, prestressed cable to complete tensioning in the prestress pipe, pressure injection high-strength polyester fibers mortar.
The double-strand height rope suspension bridge of the utility model is divided into:There are stable beam type steel skeleton prestressed concrete beam and nothing
Stablize beam type steel skeleton prestressed concrete beam.
For this steel skeleton prestressed concrete beam scheme preferably with having stable beam type, the holistic resistant behavior of such beam
Can be more preferable, across footpath can be increased in the case of identical prestressed cable, reduce volume, improve bearing capacity.
Steel skeleton prestressed concrete beam solves：1. improve the bearing capacity of prestressed concrete beam；2. increase applicable
Across footpath scope, can break through the limitation of 30 meters of across footpaths of prestressed concrete beam；3. the pressure injection of high-strength polyester fibers mortar, delays
The decay of prestress system, increases durability and durability.
The steel skeleton prestressed concrete beam of the utility model is described in a manner of brief description of the drawings above, this area
It will be appreciated by the skilled person that the present disclosure is not limited to embodiments described above, in the feelings without departing from the scope of the utility model
Under condition, it can make a variety of changes, change and replace.
Claims (5)
1. a kind of novel steel skeleton prestressed concrete beam, including it is steel skeleton, prestress pipe, prestressed anchor, anti-push rod, pre-
Stress rope, reinforcing bar system, concrete beam body and high-strength polyester fibers mortar, the beams of concrete both ends are prestressing force prestressed anchor
Tool, it is characterised in that
More Pin steel skeleton constructions are set in the beams of concrete body, are mutually fixed at beam body both ends and the prestressing force prestressed anchor
Connection,
The steel skeleton, can determine Pin numbers according to the length of beam,
The steel skeleton top clip angle within 45 degree to 90 degree,
The every two Pin junctions of steel skeleton are equipped with prestress pipe hole,
The steel skeleton is equipped with anti-push rod at beam both ends and prestressed anchor junction.
A kind of 2. novel steel skeleton prestressed concrete beam according to claim 1, it is characterised in that bag in the beam body
Steel skeleton, prestressed anchor and anti-push rod are included,
At the prestressed anchor, steel skeleton and prestressed anchor bolt split are employed.
A kind of 3. novel steel skeleton prestressed concrete beam according to claim 1, it is characterised in that bag in the beam body
Steel skeleton, prestressed anchor and anti-push rod are included,
The steel skeleton is equipped with anti-push rod at beam both ends and prestressed anchor junction.
A kind of 4. novel steel skeleton prestressed concrete beam according to claim 1, it is characterised in that the prestressed pipe
In road after tensioning is completed pressure injection high-strength polyester fibers mortar.
5. a kind of novel steel skeleton prestressed concrete beam according to claim 1, it is characterised in that the steel skeleton is adopted
With the mode of split.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720344053.4U CN207331424U (en) | 2017-04-04 | 2017-04-04 | Steel skeleton prestressed concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720344053.4U CN207331424U (en) | 2017-04-04 | 2017-04-04 | Steel skeleton prestressed concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207331424U true CN207331424U (en) | 2018-05-08 |
Family
ID=62375956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720344053.4U Active CN207331424U (en) | 2017-04-04 | 2017-04-04 | Steel skeleton prestressed concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207331424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501532A (en) * | 2020-04-26 | 2020-08-07 | 长安大学 | Assembled box girder bridge and earthquake-resistant structure thereof |
-
2017
- 2017-04-04 CN CN201720344053.4U patent/CN207331424U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501532A (en) * | 2020-04-26 | 2020-08-07 | 长安大学 | Assembled box girder bridge and earthquake-resistant structure thereof |
| CN111501532B (en) * | 2020-04-26 | 2021-09-24 | 长安大学 | Assembled box girder bridge and earthquake-resistant structure thereof |
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