CN110387805A - A kind of novel pre-stressed stayed structure based on marmem - Google Patents
A kind of novel pre-stressed stayed structure based on marmem Download PDFInfo
- Publication number
- CN110387805A CN110387805A CN201910747987.6A CN201910747987A CN110387805A CN 110387805 A CN110387805 A CN 110387805A CN 201910747987 A CN201910747987 A CN 201910747987A CN 110387805 A CN110387805 A CN 110387805A
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- China
- Prior art keywords
- marmem
- shape memory
- line
- reinforcing steel
- drag
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
The invention discloses a kind of novel pre-stressed stayed structure based on marmem, including marmem intelligence anchor cable, the marmem intelligence anchor mainly includes shape memory alloy spiral shape drag-line, marmem pipe joint, presstressed reinforcing steel, marmem fixture and spiral bar, the marmem fixture is mainly made of shape memory metal anchoring clamping plate, and shape memory metal anchoring clamping plate is inserted in anchor hole, the presstressed reinforcing steel runs through from shape memory alloy spiral shape drag-line, and presstressed reinforcing steel is connect with memorial alloy helical form drag-line by marmem pipe joint, the present invention uses marmem fixture, marmem pipe joint and shape memory alloy spiral shape drag-line, reduce prestressed loss, improve the span ability of structure, improve the mechanical property of structure, Cracking resistance and durability, the maintenance during making prestressing with bond reinforcing bar then be conducive to structure operation, improve the service life of structure.
Description
Technical field
The present invention relates to technical field of bridge engineering, specially a kind of novel pre-stressed drag-line based on marmem
Structure.
Background technique
Stress loss is the main problem in prestressed structure and stayed structure.
External prestressing elder generation placing component, then directly applies prestressed method on component.Common practices is mostly first
Post-tensioned prestressing muscle and pore-forming bellows, distributing bar and part are disposed, then installation template and concreting.Presstressed reinforcing steel
Can first threading also wear later.After equal concrete reach intensity, with jack by tension of prestressed tendon to the stress of requirement,
Then with anchor clamp anchor in the both ends of beam, compressive pre-stress is transmitted to concrete members by both ends anchor clamp.
One of the cable-stayed bridge Major Diseases of suspension cable relaxation.Cable slack, it is impossible to which the internal force for bearing original length is bound to
The redistribution for causing structural internal force makes structural internal force offset design internal force, accelerates the destruction of suspension cable, influences normally making for bridge
With.And bridge serviceability limit stage leads to mainly being influenced by the temperature difference so that suspension cable be made to produce due to suspension cable for cable-stayed bridge relaxation
Raw stress relaxation phenomenon.
The above engineering method and equipment its defect are mainly stress loss.Wherein there is mainly the deformation for having stretching end anchorage and answers in advance
Loss caused by power muscle retraction；The temperature difference causes the loss of presstressed reinforcing steel and drag-line；Damage caused by deformed bar and cable slack
It loses；Loss caused by concrete shrinkage and creep；Loss caused by presstressed reinforcing steel extruded concrete.
Marmem (Shape Memory Alloy, abbreviation SMA) is a kind of to have perception and driving function concurrently
Metal material has the unexistent many specific physical mechanical properties of common metal material, mainly has shape memory effect, surpasses
Buoyancy effect, damping effect, resistance characteristic also have the excellent characteristics such as intensity is high, plasticity is good, anticorrosive, fatigue life is long.
So-called shape memory effect is that the peculiar function of one kind possessed by the alloy of thermoelastic martensitic transformation is presented, that is, at alloy
Give plastic deformation when low-temperature phase, is heated to the phenomenon that critical-temperature restores its original-shape above by reverse transformation, referred to as
For shape memory effect.
In view of the property of loss of prestress caused by zipper structure and presstressed reinforcing steel and anchor clamp and shape memory alloy material
Energy advantage, present patent application propose a kind of novel pre-stressed muscle structure based on marmem.
Summary of the invention
The purpose of the present invention is to provide a kind of novel pre-stressed stayed structure based on marmem, by using
Marmem fixture, marmem pipe joint and shape memory alloy spiral shape drag-line, reduce prestressed loss,
The span ability for improving structure improves mechanical property, cracking resistance and the durability of structure, makes prestressing with bond reinforcing bar then
Be conducive to the maintenance during structure operation, improve the service life of structure.
To achieve the above object, the invention provides the following technical scheme: a kind of novel based on marmem pre- answers
Power stayed structure, including marmem intelligence anchor cable, the marmem intelligence anchor mainly include that shape memory closes
Golden helical form drag-line, marmem pipe joint, presstressed reinforcing steel, marmem fixture and spiral bar, the shape note
Recall alloy fixture to be mainly made of shape memory metal anchoring clamping plate, and shape memory metal anchoring clamping plate is inserted in anchor hole
In, the presstressed reinforcing steel runs through from shape memory alloy spiral shape drag-line, and presstressed reinforcing steel and memorial alloy helical form drag-line
It is connected by marmem pipe joint, the presstressed reinforcing steel side is equipped with bellows, and the spiral bar is remembered by multiple groups shape
Recall alloy helical form drag-line composition, the marmem fixture is used cooperatively with anchor slab in prestressed anchor with anchor plate,
The marmem pipe joint is used cooperatively with presstressed reinforcing steel and shape memory alloy spiral shape drag-line.
Marmem intelligence anchor is mainly used shape memory alloy spiral shape drag-line, marmem by the present invention
Pipe fitting composition, effectively reduce prestressed loss, improve the span ability of structure, improve structure mechanical property,
Cracking resistance and durability improve the service life of structure.
Preferably, the shape memory metal anchoring clamping plate is prepared with -150 DEG C of transformation temperature of TiNiFe alloy, In
Tension of prestressed tendon is completed before carrying out tightening operation, by shape memory metal anchoring clamping plate by way of dry ice or immersing in liquid nitrogen
Be fully cooled causes intermediate plate to reach normal anchoring clamping plate size, immediately intermediate plate is inserted into anchor hole, temperature recovery
After generate irreversible deformation, intermediate plate fastens presstressed reinforcing steel.
Preferably, the marmem pipe joint is prepared with -150 DEG C of transformation temperature of TiNiFe alloy, shape memory
Alloy pipe joint internal diameter ratio is small by 4% ~ 5% by adapter tube outer diameter, and marmem pipe joint makes marmem by low temperature raising
Helical form drag-line is closely connect with presstressed reinforcing steel.
The present invention prepares marmem pipe joint by using TiNiFe alloy preparation and shape memory metal anchors
Intermediate plate makes it have good memory performance, can have good resilience in long-term weighing process.
Preferably, the shape memory alloy spiral shape drag-line is made of CuZnAl alloy wire, the CuZnAl alloy wire
Equipped with 6 groups, and CuZnAl alloy wire diameter is 2.5mm, and the shape memory alloy spiral shape drag-line both ends are equipped with crotch, institute
Crotch is stated for being connected with marmem pipe joint, the CuZnAl alloy wire is equipped with 7 groups, increases robustness and resists
Fragility energy.
Preferably, the shape memory alloy spiral shape drag-line diameter is greater than presstressed reinforcing steel outer diameter, and presstressed reinforcing steel is from shape
It is passed through in shape memory alloys helical form drag-line and passes through marmem pipe joint for presstressed reinforcing steel and marmem spiral shell
It revolves shape drag-line to be connected, presstressed reinforcing steel and shape memory alloy spiral shape drag-line is condensed.
Preferably, the shape memory alloy spiral shape drag-line original state be a compressive state, when presstressed reinforcing steel due to
When there is loss of prestress, its elongation can be caused to have supplemented by way of leading to specific direct current to presstressed reinforcing steel and lost
Prestressing force, what the prestressing force of supplement can be effectively protected whole structure uses and provides the service life.
The present invention provides a kind of novel pre-stressed stayed structure based on marmem has following beneficial to effect
Fruit:
(1) present invention uses marmem fixture, marmem pipe joint and shape memory alloy spiral shape drag-line,
Prestressed loss is reduced, the span ability of structure is improved, improves mechanical property, cracking resistance and the durability of structure,
Maintenance during making prestressing with bond reinforcing bar then be conducive to structure operation, improves the service life of structure.
(2) present invention proposes its specific implementation method according to the characteristics of this new structure, i.e., by the later period to SMA anchor
Rope member temperature changes to reduce the loss of prestress problem of anchor cable structure, and anchor cable structure can be greatly reduced in this method
Loss of prestress problem, and then can realize concrete pre-stress bridge and Cable-Stayed Bridge Structure performance, structure design and construction mode
On comprehensive optimization.
Detailed description of the invention
Fig. 1 is marmem intelligence anchor cable structure schematic diagram of the invention；
Fig. 2 is shape memory alloy spiral shape stayed structure schematic diagram of the invention；
Fig. 3 is marmem pipe joint condition of high temperature structural schematic diagram of the invention；
Fig. 4 is marmem pipe joint low-temperature condition structural schematic diagram of the invention.
In figure: 100, shape memory alloy spiral shape drag-line；101, crotch；102, CuZnAl alloy wire；200, shape is remembered
Recall alloy pipe joint；300, presstressed reinforcing steel；400, marmem fixture；500, bellows；600, spiral bar；700, anchor pad
Plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
Embodiment 1:
As shown in Figs 1-4, the present invention provides a kind of technical solution: a kind of novel pre-stressed drag-line knot based on marmem
Structure, including marmem intelligence anchor cable, the marmem intelligence anchor mainly includes shape memory alloy spiral shape
Drag-line 100, marmem pipe joint 200, presstressed reinforcing steel 300, marmem fixture 400 and spiral bar 600, it is described
Marmem fixture 400 is mainly made of shape memory metal anchoring clamping plate, and shape memory metal anchoring clamping plate is inserted into
In anchor hole, the presstressed reinforcing steel 300 runs through from shape memory alloy spiral shape drag-line 100, and presstressed reinforcing steel 300 and note
Recall alloy helical form drag-line 100 to connect by marmem pipe joint 200,300 side of presstressed reinforcing steel is equipped with ripple
Pipe 500, the spiral bar 600 are made of multiple groups shape memory alloy spiral shape drag-line 100, the marmem fixture
400 are used cooperatively with anchor slab in prestressed anchor and anchor plate 700, the marmem pipe joint 200 and presstressed reinforcing steel
300 and shape memory alloy spiral shape drag-line 100 be used cooperatively.
Implementation method: shape memory metal anchoring clamping plate is prepared with -150 DEG C of transformation temperature of TiNiFe alloy, In
300 tensioning of presstressed reinforcing steel is completed before carrying out tightening operation, and shape memory metal anchoring clamping plate is passed through dry ice or immersing in liquid nitrogen
Mode, which be fully cooled, causes intermediate plate to reach normal anchoring clamping plate size, immediately intermediate plate is inserted into anchor hole, temperature
Irreversible deformation is generated after rise, intermediate plate fastens presstressed reinforcing steel 300, the transformation temperature-of marmem pipe joint 200
150 DEG C of TiNiFe alloy preparation, 200 internal diameter ratio of marmem pipe joint is small by 4% ~ 5% by adapter tube outer diameter, and inside pipe wall is simultaneously carved
There is screw thread, marmem pipe joint 200 makes shape memory alloy spiral shape drag-line 100 and presstressed reinforcing steel by low temperature raising
300 close connections, shape memory alloy spiral shape drag-line 100 be made of the CuZnAl alloy wire 102 of 6 groups of 2.5mm it is a branch of, in turn
It is processed as a shape memory alloy spiral shape drag-line 100,100 both ends of shape memory alloy spiral shape drag-line have crotch
101, for being connected with marmem pipe joint 200,100 diameter of shape memory alloy spiral shape drag-line is greater than crotch 101
300 outer diameter of presstressed reinforcing steel, and presstressed reinforcing steel 300 is passed through from shape memory alloy spiral shape drag-line 100, and passes through shape memory
Presstressed reinforcing steel 300 is connected by alloy pipe joint 200 with shape memory alloy spiral shape drag-line 100, shape memory alloy spiral shape
100 original state of drag-line is that a compressive state can be by prestressing force when presstressed reinforcing steel 300 is due to there is loss of prestress
The mode that muscle 300 leads to specific direct current causes its elongation to supplement the prestressing force lost.
It should be noted that a kind of novel pre-stressed stayed structure based on marmem, at work, using-
150 DEG C of TiNiFe alloy prepares marmem fixture 400, marmem pipe joint 200 and marmem
Helical form drag-line 100 can effectively reduce prestressed loss, improve the span ability of structure, improve the mechanical property of structure
Energy, cracking resistance and durability, the maintenance during making prestressing with bond reinforcing bar then be conducive to structure operation, improve making for structure
With the service life, the loss of prestress problem of anchor cable structure is reduced to the variation of SMA anchor cable member temperature by the later period, this method can
The loss of prestress problem of anchor cable structure can be greatly reduced, and then it can realize concrete pre-stress bridge and Cable-Stayed Bridge Structure
Comprehensive optimization on energy, structure design and construction mode.
Embodiment 2:
As shown in Figs 1-4, the present invention provides a kind of technical solution: a kind of novel pre-stressed drag-line knot based on marmem
Structure, including marmem intelligence anchor cable, the marmem intelligence anchor mainly includes shape memory alloy spiral shape
Drag-line 100, marmem pipe joint 200, presstressed reinforcing steel 300, marmem fixture 400 and spiral bar 600, it is described
Marmem fixture 400 is mainly made of shape memory metal anchoring clamping plate, and shape memory metal anchoring clamping plate is inserted into
In anchor hole, the presstressed reinforcing steel 300 runs through from shape memory alloy spiral shape drag-line 100, and presstressed reinforcing steel 300 and note
Recall alloy helical form drag-line 100 to connect by marmem pipe joint 200,300 side of presstressed reinforcing steel is equipped with ripple
Pipe 500, the spiral bar 600 are made of multiple groups shape memory alloy spiral shape drag-line 100, the marmem fixture
400 are used cooperatively with anchor slab in prestressed anchor and anchor plate 700, the marmem pipe joint 200 and presstressed reinforcing steel
300 and shape memory alloy spiral shape drag-line 100 be used cooperatively.
Implementation method: shape memory metal anchoring clamping plate is prepared with -150 DEG C of transformation temperature of TiNiFe alloy, In
300 tensioning of presstressed reinforcing steel is completed before carrying out tightening operation, and shape memory metal anchoring clamping plate is passed through dry ice or immersing in liquid nitrogen
Mode, which be fully cooled, causes intermediate plate to reach normal anchoring clamping plate size, immediately intermediate plate is inserted into anchor hole, temperature
Irreversible deformation is generated after rise, intermediate plate fastens presstressed reinforcing steel 300, the transformation temperature-of marmem pipe joint 200
150 DEG C of TiNiFe alloy preparation, 200 internal diameter ratio of marmem pipe joint is small by 4% ~ 5% by adapter tube outer diameter, and inside pipe wall is simultaneously carved
There is screw thread, marmem pipe joint 200 makes shape memory alloy spiral shape drag-line 100 and presstressed reinforcing steel by low temperature raising
300 close connections, shape memory alloy spiral shape drag-line 100 be made of the CuZnAl alloy wire 102 of 7 groups of 2.5mm it is a branch of, in turn
It is processed as a shape memory alloy spiral shape drag-line 100,100 both ends of shape memory alloy spiral shape drag-line have crotch
101, for being connected with marmem pipe joint 200,100 diameter of shape memory alloy spiral shape drag-line is greater than crotch 101
300 outer diameter of presstressed reinforcing steel, and presstressed reinforcing steel 300 is passed through from shape memory alloy spiral shape drag-line 100, and passes through shape memory
Presstressed reinforcing steel 300 is connected by alloy pipe joint 200 with shape memory alloy spiral shape drag-line 100, shape memory alloy spiral shape
100 original state of drag-line is that a compressive state can be by prestressing force when presstressed reinforcing steel 300 is due to there is loss of prestress
The mode that muscle 300 leads to specific direct current causes its elongation to supplement the prestressing force lost.
It should be noted that a kind of novel pre-stressed stayed structure based on marmem, at work, using-
150 DEG C of TiNiFe alloy prepares marmem fixture 400, marmem pipe joint 200 and marmem
Helical form drag-line 100 can effectively reduce prestressed loss, improve the span ability of structure, improve the mechanical property of structure
Energy, cracking resistance and durability, the maintenance during making prestressing with bond reinforcing bar then be conducive to structure operation, improve making for structure
With the service life, the loss of prestress problem of anchor cable structure is reduced to the variation of SMA anchor cable member temperature by the later period, this method can
The loss of prestress problem of anchor cable structure can be greatly reduced, and then it can realize concrete pre-stress bridge and Cable-Stayed Bridge Structure
Comprehensive optimization on energy, structure design and construction mode.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of novel pre-stressed stayed structure based on marmem, including marmem intelligence anchor cable, special
Sign is that the marmem intelligence anchor mainly includes shape memory alloy spiral shape drag-line (100), marmem
Pipe fitting (200), presstressed reinforcing steel (300), marmem fixture (400) and spiral bar (600), the marmem
Fixture (400) is mainly made of shape memory metal anchoring clamping plate, and shape memory metal anchoring clamping plate is inserted in anchor hole,
The presstressed reinforcing steel (300) is run through from shape memory alloy spiral shape drag-line (100), and presstressed reinforcing steel (300) and memory are closed
Golden helical form drag-line (100) is connected by marmem pipe joint (200), and presstressed reinforcing steel (300) side is equipped with wave
Line pipe (500), the spiral bar (600) are made of multiple groups shape memory alloy spiral shape drag-line (100), and the shape memory closes
Golden fixture (400) is used cooperatively with anchor slab in prestressed anchor and anchor plate (700), the marmem pipe joint
(200) it is used cooperatively with presstressed reinforcing steel (300) and shape memory alloy spiral shape drag-line (100).
2. a kind of novel pre-stressed stayed structure based on marmem according to claim 1, it is characterised in that:
The shape memory metal anchoring clamping plate is prepared with -150 DEG C of transformation temperature of TiNiFe alloy, in presstressed reinforcing steel (300)
It pulls into before carrying out tightening operation, shape memory metal anchoring clamping plate is carried out by way of dry ice or immersing in liquid nitrogen sufficiently cold
But cause intermediate plate to reach normal anchoring clamping plate size, immediately intermediate plate is inserted into anchor hole, generating after temperature recovery can not
The deformation of reverse, intermediate plate fasten presstressed reinforcing steel (300).
3. a kind of novel pre-stressed stayed structure based on marmem according to claim 1, it is characterised in that:
The marmem pipe joint (200) is prepared with -150 DEG C of transformation temperature of TiNiFe alloy, marmem pipe joint
(200) internal diameter ratio is small by 4% ~ 5% by adapter tube outer diameter, and marmem pipe joint (200) makes marmem by low temperature raising
Helical form drag-line (100) is closely connect with presstressed reinforcing steel (300).
4. a kind of novel pre-stressed stayed structure based on marmem according to claim 1, it is characterised in that:
The shape memory alloy spiral shape drag-line (100) is made of CuZnAl alloy wire (102), the CuZnAl alloy wire (102)
Equipped with 6 groups, and CuZnAl alloy wire (102) diameter is 2.5mm, and shape memory alloy spiral shape drag-line (100) both ends are equal
Equipped with crotch (101), the crotch (101) with marmem pipe joint (200) for being connected.
5. a kind of novel pre-stressed stayed structure based on marmem according to claim 4, it is characterised in that:
The CuZnAl alloy wire (102) is equipped with 7 groups.
6. a kind of novel pre-stressed stayed structure based on marmem according to claim 1, it is characterised in that:
Shape memory alloy spiral shape drag-line (100) diameter is greater than presstressed reinforcing steel (300) outer diameter, and presstressed reinforcing steel (300) is from shape
Passed through in shape memory alloys helical form drag-line (100) and by marmem pipe joint (200) by presstressed reinforcing steel (300) and
Shape memory alloy spiral shape drag-line (100) is connected.
7. a kind of novel pre-stressed stayed structure based on marmem according to claim 1, it is characterised in that:
Shape memory alloy spiral shape drag-line (100) original state is a compressive state, when presstressed reinforcing steel (300) is pre- due to occurring
When stress loss, its elongation can be caused to have supplemented by way of leading to specific direct current to presstressed reinforcing steel (300) and lost
Prestressing force.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910747987.6A CN110387805A (en) | 2019-08-14 | 2019-08-14 | A kind of novel pre-stressed stayed structure based on marmem |
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| CN201910747987.6A CN110387805A (en) | 2019-08-14 | 2019-08-14 | A kind of novel pre-stressed stayed structure based on marmem |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112223012A (en) * | 2020-11-04 | 2021-01-15 | 江苏汇鼎光学眼镜有限公司 | Grinding device is used in lens processing |
| CN113770949A (en) * | 2021-09-29 | 2021-12-10 | 江苏罡阳股份有限公司 | Hole part clamping fixture based on shape memory effect and positioning method |
| CN115064068A (en) * | 2022-06-09 | 2022-09-16 | 武汉华星光电半导体显示技术有限公司 | Flexible display module and preparation method thereof |
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| US20130102190A1 (en) * | 2011-10-25 | 2013-04-25 | Robert J. Chastain | Coaxial Barrel Fittings and couplings with Ground Establishing Traveling Sleeves |
| CN204418002U (en) * | 2015-01-21 | 2015-06-24 | 杨玉芝 | The permanent prestressed anchor device of prefabricated units |
| CN209703305U (en) * | 2019-01-28 | 2019-11-29 | 广西宏梧高速公路有限公司 | Traction cable based on marmem |
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| CN2595512Y (en) * | 2002-12-31 | 2003-12-31 | 北京海能海特石油科技发展有限公司 | Super hard material and metal substrate material composite body |
| US20130102190A1 (en) * | 2011-10-25 | 2013-04-25 | Robert J. Chastain | Coaxial Barrel Fittings and couplings with Ground Establishing Traveling Sleeves |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112223012A (en) * | 2020-11-04 | 2021-01-15 | 江苏汇鼎光学眼镜有限公司 | Grinding device is used in lens processing |
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| CN115064068A (en) * | 2022-06-09 | 2022-09-16 | 武汉华星光电半导体显示技术有限公司 | Flexible display module and preparation method thereof |
| CN115064068B (en) * | 2022-06-09 | 2024-03-19 | 武汉华星光电半导体显示技术有限公司 | Flexible display module and preparation method thereof |
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Application publication date: 20191029 |