CN110005130A - A kind of delayed bonding prestressed tendon back has sticked up tensioning component and its construction technology - Google Patents
A kind of delayed bonding prestressed tendon back has sticked up tensioning component and its construction technology Download PDFInfo
- Publication number
- CN110005130A CN110005130A CN201910281289.1A CN201910281289A CN110005130A CN 110005130 A CN110005130 A CN 110005130A CN 201910281289 A CN201910281289 A CN 201910281289A CN 110005130 A CN110005130 A CN 110005130A
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- sticked
- prestressed tendon
- bearing plate
- delayed bonding
- bonding prestressed
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- 210000002435 tendon Anatomy 0.000 title claims abstract description 64
- 230000003111 delayed effect Effects 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 239000011513 prestressed concrete Substances 0.000 claims abstract description 24
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 10
- 239000004567 concrete Substances 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 210000003205 muscle Anatomy 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a kind of delayed bonding prestressed tendon backs to have sticked up tensioning component and its construction technology, when construction, delayed bonding prestressed tendon is arranged or is evenly arranged by beam along longitudinal direction in prestressed concrete beam, it has been sticked up in delayed bonding prestressed tendon and has started uniformly to scatter at stretching end, and parabolically successively sticked up, form multiple rows of stretching end；Then back tensioning is carried out, tensioning component used in stretching process includes beam longitudinal direction regular reinforcement, is vertically set in delayed bonding prestressed tendon and sticked up bearing plate on stretching end, is provided with additional bar between beam longitudinal direction regular reinforcement and bearing plate；It is provided on the inside of bearing plate and is set in spiral bar on delayed bonding prestressed tendon；Bearing plate outside vertical is provided with cave mould in bearing plate.The present invention carries out tensioning to presstressed reinforcing steel in back, does not need to reserve big groove in beam, weaken the influence to beam section small；In addition, operating space is big when back carries out tensioning, construction is flexible and convenient.
Description
Technical field
The invention belongs to technical field of building construction, and in particular to a kind of delayed bonding prestressed tendon back has sticked up tensioning component
And its construction technology.
Background technique
Prestressed concrete beam is beam to be previously applied the power for making it generate hogging moment in span centre, is made with partial offset beam
Sagging moment in, avoids concrete structure crack from occurring too early.It makes full use of high strength cast iron and high-intensitive coagulation
Soil is tried in structural elements before by load action, it is made to generate precompression to reduce or offset concrete pulling caused by load
Power, thus by the tensile stress control of structural elements in smaller range, even in pressured state, to postpone going out for distress in concrete
Now and carry out, to improve the cracking resistance and rigidity of component.
Delayed bonding prestressed tendon is the presstressed reinforcing steel adhesive form for being in unbonded tendon and having one kind between bonding muscle new, i.e.,
It had not only had the advantages that free, easy to use, without duct the setting of the cloth rope of unbonded tendon and mud jacking, but also there is bonding muscle to exist
A kind of new prestressing techniques of feature and safety in later period use.Delayed bonding prestressed tendon be widely used in beams of concrete and
In the construction of plate, the emphasis of current construction industry research and development is become in the advantage that it is protruded.
It is special generally in the end tensioned prestressing bar of prestressed concrete beam in prestressed concrete beam construction work
Due to the limitation of tensioning condition in different situation, the tensioned prestressing bar in prestressed concrete beam is needed, when in prestressed concrete
In native beam when tensioned prestressing bar, tension slot groove is reserved usually in prestressed concrete beam, and tensioning behaviour is carried out in tension slot groove
Make.In order to guarantee that jack has enough tensioning spaces, it is desirable that tension slot groove is bigger, and it is mixed to will lead to prestressing force in this case
The section weakening ratio of solidifying Tu Liang is more serious, needs to take measures to guarantee the stress safety after beam section weakens；On the other hand, it is opening
Tension of prestressed tendon is carried out in kerve, difficulty is big, construction trouble.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of delayed bonding prestressed tendon backs to have sticked up tensioning group
Part and its construction technology.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of delayed bonding prestressed tendon back has sticked up tensioning component, and the beam including being arranged in prestressed concrete beam is longitudinal
Regular reinforcement stretching end and is set in slow cohesion and answers in advance from sticking up the delayed bonding prestressed tendon that prestressed concrete beam back stretches out
Power muscle has sticked up the bearing plate on stretching end, and the bearing plate, which is obliquely installed and has sticked up stretching end with the delayed bonding prestressed tendon, to hang down
Directly；Additional bar is provided between beam longitudinal direction regular reinforcement and bearing plate；It is provided with spiral bar on the inside of the bearing plate, institute
Spiral bar is stated to be set on delayed bonding prestressed tendon；The bearing plate outside vertical is provided with cave mould in bearing plate.
Further scheme, the cave mould include outer rigid housing and flexible inner casing, are offered on the central axis of the cave mould
For passing through the through-hole of delayed bonding prestressed tendon.
Further scheme, the material of the outer rigid housing are steel plate, and the material of the flexibility inner casing is polyethylene.
Further scheme, cave mould be 80x80x180mm cuboid, the outer rigid housing with a thickness of
2.5mm, the size of the flexibility inner casing are 75x75x180mm, and the diameter of the through-hole is 26mm.
Further scheme is welded with cave mould handle on the top surface of the outer rigid housing, facilitates cave mould by cave mould handle
Installation fixation and tick slot.
Further scheme, the cave mould handle are the reinforcing bars that diameter is 6mm.
Further scheme, the bearing plate are fixedly connected with additional bar spot welding, diameter >=16mm of the additional bar.
It is a further object to provide the constructions that tensioning component has been sticked up based on above-mentioned delayed bonding prestressed tendon back
Technique, steps are as follows:
(1) arrange delayed bonding prestressed tendon: delayed bonding prestressed tendon is arranged by beam along longitudinal direction in prestressed concrete beam
Or it is evenly arranged；It is to lay first row at L1 to stick up starting point in the horizontal distance apart from concrete column axis, after first row sticks up starting point
Starting point is sticked up for second row, first row sticks up starting point and second row sticks up the i.e. adjacent two rows of starting point and sticks up the distance between starting point for L2, successively
Analogize, formation is multiple rows of to stick up starting point；Delayed bonding prestressed tendon starts uniformly to scatter and has parabolically successively sticked up in batches sticking up starting point,
Form multiple rows of stretching end；The deck-molding of prestressed concrete beam is h, and delayed bonding prestressed tendon distance at concrete column axis is answered in advance
The distance of power beams of concrete back is h1；Meet between L1, L2, h and h1: L1 > 1.5h, h1/L1≤1/10, L2 >=500mm；
(2) it assembles stretching end component: additional bar is taken, by itself and beam longitudinal direction regular reinforcement binding and fixing；Bearing plate is hung down
It is directly set in delayed bonding prestressed tendon to have sticked up on stretching end, the bearing plate bottom is fixedly connected with additional bar；In bearing plate
Outside vertical is in bearing plate installation hole mould；Spiral bar is installed on the inside of bearing plate, the spiral bar is set in retarded adhesive prestressed
On muscle.
(3) disturbing concrete；
(4) cave mould is removed after concrete initial set；
(5) tensioning is carried out after concrete reaches intensity；
(6) sealing off and covering anchorage.
Compared with prior art, the invention has the benefit that
Delayed bonding prestressed tendon back provided by the invention has sticked up tension construction technology, by delayed bonding prestressed tendon in beam
It is arranged or is evenly arranged by beam along longitudinal direction, started uniformly to scatter sticking up starting point, and successively sticked up, tensioning has been sticked up using back,
It does not need to reserve big groove in beam, weaken the influence to beam section small.To guarantee that concrete vibrating is closely knit, first row sticks up starting point
Position L1 > 1.5h or 2h, i.e., presstressed reinforcing steel sticked up position should be since outside the hoop reinforcement in beam；To prevent presstressed reinforcing steel
It is excessive to have sticked up angle, has guaranteed h1/L1≤1/10；First row sticks up starting point and second row sticks up distance L2 >=500mm between starting point.In beam
Top carries out tensioning, and operating space is big, and construction is flexible and convenient, substantially increases the laying quality of construction efficiency and presstressed reinforcing steel.
Delayed bonding prestressed tendon back provided by the invention has sticked up tensioning component, by bearing plate and beam longitudinal direction ordinary steel
Additional bar is set between muscle, so that bearing plate be welded and fixed by additional bar, bearing plate is enable to be obliquely installed and protect
It holds that have sticked up stretching end with delayed bonding prestressed tendon vertical, and then so that subsequent tension operation is stablized, facilitate progress；In addition,
Compared with plastics cave mould in the prior art or foam cave mould, by the present invention in that with outer rigid housing and flexible inner casing configuration
Cave mould keeps cave mould easy for installation, and the concrete formation effect around the mould of cave is good, and impression quality is good；It can also reuse, at
This is low and environmental-friendly.
Detailed description of the invention
Fig. 1 is that delayed bonding prestressed tendon back has sticked up tensioning component structure diagram；
Fig. 2 is cave mode structure schematic diagram；
Fig. 3 is distribution schematic diagram of the delayed bonding prestressed tendon in prestressed concrete beam；
Fig. 4 is the top view of Fig. 3；
Appended drawing reference: 1- prestressed concrete beam, 10- first row stick up starting point, and 11- second row sticks up starting point, and 2- beam is longitudinally general
Logical reinforcing bar, 3- delayed bonding prestressed tendon, 4- delayed bonding prestressed tendon have sticked up stretching end, 5- bearing plate, 6- additional bar, 7- spiral
Muscle, the cave 8- mould, 81- outer rigid housing, 82- flexibility inner casing, 83- through-hole, the cave 84- mould handle, 9- concrete column, h- prestressed concrete
The deck-molding of Tu Liang, h1- delayed bonding prestressed tendon at concrete column axis apart from the distance of back, L1- first row stick up starting point with
Horizontal distance between concrete column axis, L2- is adjacent, and two rows stick up the distance between starting point.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawings and examples.Obviously, described embodiment is this
Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Tensioning component structure diagram, including setting have been sticked up as shown in Figure 1 for delayed bonding prestressed tendon back of the invention
Beam longitudinal direction regular reinforcement 2 in prestressed concrete beam 1, stretched out from 1 back of prestressed concrete beam it is retarded adhesive prestressed
Muscle, which has sticked up stretching end 4 and has been set in delayed bonding prestressed tendon, has sticked up bearing plate 5 on stretching end 4, and the bearing plate 5 is obliquely installed
And it is vertical with the delayed bonding prestressed tendon to have sticked up stretching end 4；It is provided between beam longitudinal direction regular reinforcement 2 and bearing plate 5
Additional bar 6, the bearing plate 5 are fixedly connected with 6 spot welding of additional bar, diameter >=16mm of the additional bar.By
Additional bar is set between bearing plate and beam longitudinal direction regular reinforcement, so that bearing plate be welded and fixed by additional bar, makes to hold
Pressing plate can be obliquely installed and keep having sticked up stretching end with delayed bonding prestressed tendon vertical, and then enable subsequent tension operation
Stablize, facilitate progress.Spiral bar 7 is provided on the inside of the bearing plate 5, the spiral bar 7 is set in delayed bonding prestressed tendon 3
On；Cave mould 8 is provided on the outside of the bearing plate 5.As shown in Fig. 2, the cave mould 8 includes 81 He of outer rigid housing made of steel plate
Flexibility inner casing 82 made of polyethylene offers on the central axis of the cave mould 8 for passing through the logical of delayed bonding prestressed tendon 3
Hole 83.The cave mould is the cuboid of 80 × 80 × 180mm, the outer rigid housing with a thickness of 2.5mm, the flexibility inner casing
Having a size of 75 × 75 × 180mm, the diameter of the through-hole is 26mm.Compared with plastics cave mould in the prior art or foam cave mould,
By the present invention in that keeping cave mould easy for installation with the cave mould with outer rigid housing and flexible inner casing configuration, and mixed around the mould of cave
Solidifying earth forming effect is good, and impression quality is good；It can also reuse, it is at low cost and environmental-friendly.It is welded on the top surface of outer rigid housing
It is connected to cave mould handle 84, cave mould handle is the reinforcing bar that diameter is 6mm, facilitates the installation fixation of cave mould by cave mould handle and picks
Slot.
As shown in Figure 3 and Figure 4, the construction technology of tensioning component, step have been sticked up based on above-mentioned delayed bonding prestressed tendon back
It is as follows:
(1) arrange delayed bonding prestressed tendon: delayed bonding prestressed tendon 3 presses beam cloth along longitudinal direction in prestressed concrete beam 1
It sets or is evenly arranged；It is to lay first row at L1 to stick up starting point 10 in the horizontal distance apart from 9 axis of concrete column, first row has sticked up
Stick up starting point 11 after point 10 for second row, first row sticks up starting point 10 and second row stick up the i.e. adjacent two rows of starting point 11 stick up between starting point away from
From for L2, and so on, it is formed and multiple rows of sticks up starting point；The deck-molding of prestressed concrete beam 1 is h, and delayed bonding prestressed tendon 3 is in coagulation
Distance at 9 axis of earth pillar apart from 1 back of prestressed concrete beam is h1；Delayed bonding prestressed tendon 3 starts uniformly sticking up starting point
It scatters and has parabolically successively sticked up in batches, form multiple rows of stretching end 4；Meet between L1, L2, h and h1: L1 > 1.5h, h1/L1
≤ 1/10, L2 >=500mm；I.e. presstressed reinforcing steel sticked up position should since outside the hoop reinforcement in beam, with guarantee concrete shake
Puddling is real, in addition excessive to prevent presstressed reinforcing steel from having sticked up angle, should ensure that h1/L1≤1/10, and L2 >=500mm；
(2) it assembles stretching end component: additional bar 6 is taken, by itself and 2 binding and fixing of beam longitudinal direction regular reinforcement；By bearing plate 5
It is vertically set in delayed bonding prestressed tendon to have sticked up on stretching end 4,5 bottom of bearing plate is fixedly connected with additional bar 6；It is holding
5 outside vertical of pressing plate is in 5 installation hole mould 8 of bearing plate；Spiral bar 7 is installed on the inside of bearing plate 5, the spiral bar 7 is set in slow
On binding prestress reinforcement 3.
(3) disturbing concrete；
(4) cave mould 8 is removed after concrete initial set；
(5) tensioning is carried out after concrete reaches intensity；
(6) sealing off and covering anchorage.
Tension construction technology is sticked up by above-mentioned delayed bonding prestressed tendon back, by delayed bonding prestressed tendon along vertical in beam
It arranges or is evenly arranged to by beam, start uniformly to scatter at stretching end, and successively sticked up, tensioning has been sticked up using back, has been not required to
Big groove is reserved in beam, weakened the influence to beam section small.Furthermore back progress tension operation space is big, and construct flexibly side
Just, the laying quality of construction efficiency and presstressed reinforcing steel is substantially increased.
Claims (8)
1. a kind of delayed bonding prestressed tendon back has sticked up tensioning component, it is characterised in that: including being arranged in prestressed concrete beam
(1) the beam longitudinal direction regular reinforcement (2) in, the tensioning from sticking up the delayed bonding prestressed tendon that prestressed concrete beam (1) back stretches out
It end (4) and is set in delayed bonding prestressed tendon and has sticked up bearing plate (5) on stretching end (4), the bearing plate (5) is obliquely installed simultaneously
It is vertical that stretching end (4) have been sticked up with the delayed bonding prestressed tendon；It is set between beam longitudinal direction regular reinforcement (2) and bearing plate (5)
It is equipped with additional bar (6)；It is provided with spiral bar (7) on the inside of the bearing plate (5), it is pre- that the spiral bar (7) is set in slow cohesion
On stress rib (3)；Bearing plate (5) outside vertical is provided with cave mould (8) in bearing plate (5).
2. a kind of delayed bonding prestressed tendon back according to claim 1 has sticked up tensioning component, it is characterised in that: the cave
Mould (8) includes outer rigid housing (81) and flexible inner casing (82), is offered on the central axis of the cave mould (8) for across slow viscous
Tie the through-hole (83) of presstressed reinforcing steel.
3. a kind of delayed bonding prestressed tendon back according to claim 2 has sticked up tensioning component, it is characterised in that: described rigid
Property shell (81) material be steel plate, it is described flexibility inner casing (82) material be polyethylene.
4. a kind of delayed bonding prestressed tendon back according to claim 2 or 3 has sticked up tensioning component, it is characterised in that: institute
State the cuboid that cave mould (8) are 80 × 80 × 180mm, the outer rigid housing (81) with a thickness of 2.5mm, the flexibility inner casing
(82) size is 75 × 75 × 180mm, and the diameter of the through-hole (83) is 26mm.
5. a kind of delayed bonding prestressed tendon back according to claim 2 or 3 has sticked up tensioning component, it is characterised in that: institute
It states and is welded with cave mould handle (84) on the top surface of outer rigid housing (81).
6. a kind of delayed bonding prestressed tendon back according to claim 5 has sticked up tensioning component, it is characterised in that: the cave
Mould handle (84) is the reinforcing bar that diameter is 6mm.
7. a kind of delayed bonding prestressed tendon back according to claim 1 has sticked up tensioning component, it is characterised in that: described to hold
Pressing plate (5) is fixedly connected with additional bar (6) spot welding, diameter >=16mm of the additional bar (6).
8. a kind of construction technology for having sticked up tensioning component based on delayed bonding prestressed tendon back as described in claim 1, special
Sign is: steps are as follows:
(1) arrange delayed bonding prestressed tendon: delayed bonding prestressed tendon (3) presses beam cloth along longitudinal direction in prestressed concrete beam (1)
It sets or is evenly arranged；It is to lay first row at L1 to stick up starting point (10), first row in the horizontal distance apart from concrete column (9) axis
It sticks up starting point (10) to stick up starting point (11) for second row afterwards, first row, which sticks up starting point (10) and sticks up the i.e. adjacent two rows of starting point (11) with second row, to stick up
The distance between starting point is L2, and so on, formation is multiple rows of to stick up starting point；Delayed bonding prestressed tendon (3) starts uniformly sticking up starting point
It scatters and has parabolically successively sticked up in batches, form multiple rows of stretching end (4)；The deck-molding of prestressed concrete beam (1) is h, is delayed viscous
Tying the distance of presstressed reinforcing steel (3) at concrete column (9) axis apart from prestressed concrete beam (1) back is h1；L1, L2, h and
Meet between h1: L1 > 1.5h, h1/L1≤1/10, L2 >=500mm；
(2) it assembles stretching end component: additional bar (6) is taken, by itself and beam longitudinal direction regular reinforcement (2) binding and fixing；By bearing plate
(5) it is vertically set in delayed bonding prestressed tendon to have sticked up on stretching end (4), bearing plate (5) bottom and additional bar (6) are fixed
Connection；In bearing plate (5) outside vertical in bearing plate (5) installation hole mould (8)；Spiral bar (7) are installed on the inside of bearing plate (5),
The spiral bar (7) is set on delayed bonding prestressed tendon (3).
(3) disturbing concrete；
(4) cave mould (8) is removed after concrete initial set；
(5) tensioning is carried out after concrete reaches intensity；
(6) sealing off and covering anchorage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281289.1A CN110005130A (en) | 2019-04-09 | 2019-04-09 | A kind of delayed bonding prestressed tendon back has sticked up tensioning component and its construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910281289.1A CN110005130A (en) | 2019-04-09 | 2019-04-09 | A kind of delayed bonding prestressed tendon back has sticked up tensioning component and its construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005130A true CN110005130A (en) | 2019-07-12 |
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ID=67170564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910281289.1A Pending CN110005130A (en) | 2019-04-09 | 2019-04-09 | A kind of delayed bonding prestressed tendon back has sticked up tensioning component and its construction technology |
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| Country | Link |
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| CN (1) | CN110005130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431260A (en) * | 2021-06-30 | 2021-09-24 | 西藏藏建科技股份有限公司 | Girder construction process based on steel strand |
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|---|---|---|---|---|
| CN101270589A (en) * | 2008-05-04 | 2008-09-24 | 中国建筑第六工程局有限公司 | Ultra-large span three-dimensional pre-stress beamless circular plate construction method |
| CN203160493U (en) * | 2013-03-05 | 2013-08-28 | 杭州建工集团有限责任公司 | Steel reinforcement framework mechanism of large-span prestressed dense ribbed beam floor |
| CN104631836A (en) * | 2014-12-08 | 2015-05-20 | 永升建设集团有限公司 | Post-tensioning-method retard-bonded pre-stress cast-in-place concrete construction method |
| CN204754213U (en) * | 2015-06-25 | 2015-11-11 | 中建八局第三建设有限公司 | Prestressing without bondn steel strand stretching end cave mould |
| CN206313379U (en) * | 2016-12-07 | 2017-07-07 | 重庆浙升科技有限公司 | A kind of optical-fibre communications electric power protection sleeve pipe |
| CN208518212U (en) * | 2018-06-04 | 2019-02-19 | 中国建筑第八工程局有限公司 | Anchor plate and mounting structure for delayed bonding prestressed tendon plate face stretching end |
| CN210032336U (en) * | 2019-04-09 | 2020-02-07 | 中铁四局集团建筑工程有限公司 | Slow-bonding prestressed tendon beam jacking tensioning assembly |
-
2019
- 2019-04-09 CN CN201910281289.1A patent/CN110005130A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270589A (en) * | 2008-05-04 | 2008-09-24 | 中国建筑第六工程局有限公司 | Ultra-large span three-dimensional pre-stress beamless circular plate construction method |
| CN203160493U (en) * | 2013-03-05 | 2013-08-28 | 杭州建工集团有限责任公司 | Steel reinforcement framework mechanism of large-span prestressed dense ribbed beam floor |
| CN104631836A (en) * | 2014-12-08 | 2015-05-20 | 永升建设集团有限公司 | Post-tensioning-method retard-bonded pre-stress cast-in-place concrete construction method |
| CN204754213U (en) * | 2015-06-25 | 2015-11-11 | 中建八局第三建设有限公司 | Prestressing without bondn steel strand stretching end cave mould |
| CN206313379U (en) * | 2016-12-07 | 2017-07-07 | 重庆浙升科技有限公司 | A kind of optical-fibre communications electric power protection sleeve pipe |
| CN208518212U (en) * | 2018-06-04 | 2019-02-19 | 中国建筑第八工程局有限公司 | Anchor plate and mounting structure for delayed bonding prestressed tendon plate face stretching end |
| CN210032336U (en) * | 2019-04-09 | 2020-02-07 | 中铁四局集团建筑工程有限公司 | Slow-bonding prestressed tendon beam jacking tensioning assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431260A (en) * | 2021-06-30 | 2021-09-24 | 西藏藏建科技股份有限公司 | Girder construction process based on steel strand |
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