CN108798062A - Steel-concrete interface damage monitoring based on marmem and reinforcement means - Google Patents
Steel-concrete interface damage monitoring based on marmem and reinforcement means Download PDFInfo
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- CN108798062A CN108798062A CN201810748827.9A CN201810748827A CN108798062A CN 108798062 A CN108798062 A CN 108798062A CN 201810748827 A CN201810748827 A CN 201810748827A CN 108798062 A CN108798062 A CN 108798062A
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- 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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention belongs to civil engineering composite structure reinforce with health monitoring field, be related to it is a kind of based on marmem steel-concrete interface damage monitoring and reinforcement means.Shape-memory alloy wire is embedded in concrete by the present invention, it connect peg with combination beam inner boundary and section steel beam is connected, or it is fixed on interface connection peg surface, externally measured control system is changed by monitoring shape-memory alloy wire resistance and length, obtains interface Relative sliding and peg deformation damage information.When combination beam interface damage degree is more than certain threshold value, heating control is carried out to shape-memory alloy wire, shape-memory alloy wire slides along combination beam inner boundary or peg deformation negative direction applies restoring force, carries out interface reinforcing.If interface damage degree is more serious, it can be also in the milk, be reinforced to interface by reserved grouting mouth.Embodiment of the present invention is simple, flexible, feasibility is strong and good compatibility, the interface that combination beam in long period may be implemented monitor and are actively adjusted and reinforce.
Description
Technical field
The invention belongs to the reinforcings of civil engineering composite structure and health monitoring field, are related to a kind of based on marmem
Steel-concrete interface damage monitoring and reinforcement means.
Background technology
Steel-concrete composite beam is a kind of emerging structural elements, is had from heavy and light, rigidity is big, bearing capacity is strong, ductility
Many advantages, such as good, easy for construction, is used widely in all kinds of novel buildings and special building structure, as super high rise structure,
Heavy duty industrial building, large bridge and large-span space structure etc..Steel-concrete composite beam mainly by lower part section steel beam and
Shear connector (such as peg, bolt, channel steel, curved muscle) is set between upper reinforcement concrete flange plate, makes one
Whole and works together, steel and concrete are with different material properties, and under load action, there may be lift at the two interface
Rise and Relative sliding.As the crucial supporting member in composite structure, interface sliding will reduce the work such as structural bearing capacity, ductility
Performance, and then structure is caused to be destroyed, cause catastrophic effect.Therefore, interface safety monitoring carried out to combination beam, reinforced, favorably
In ensureing composite structure overall security and durability, there is substantial economics and social benefit.
Marmem (Shape Memory Alloy, abbreviation SMA) is a kind of with shape memory effect, super phase transformation
The new function material of super-elasticity and high-damping.SMA can sense temperature, magnetic field etc. change and convert thermal energy into mechanical energy, it is right
Outer power output, displacement or storage simultaneously release energy.SMA also has that recoverable deformation is big, limited restoring force is big, resistance is quick to straining
Sense, corrosion-resistant, anti-fatigue performance is good, and processability is good, is easy to that the materials such as same concrete, steel are combined, elasticity modulus is with phase
The change of change state and the features such as change, be one of driving element preferred in civil engineering.
The monitoring means of existing composite structure beam is concentrated mainly on deformation, vibration etc.：Such as by monitor combination beam across
In and support displacement, obtain structure overall deformation situation, by monitor the combination beam vibration shape, frequency and curvature variation, identify it
Degree of injury.It is relatively macroscopical although existing method can identify structural damage situation, only when structure occurs compared with macrolesion
When, significant change can just occur for the vibration shape, frequency etc..Existing composite structure reinforcement means also with surface macroscopic view reinforce based on, such as it is right
In-service combination beam applies external prestressing, package FRP composite materials etc..Microscopic damage is constantly sent out when in view of structure macroscopic damage
The prison to composite structure microscopic damage (such as interface sliding, connecting member deformation, concrete cracking) is carried out in the final embodiment of exhibition
It surveys, and takes relevant reinforcement, maintenance measure in time, can prevent trouble before it happens, effectively prevent the generation of structure major injury, in turn
Ensure safety of structure and durability.Research at present about composite structure interface microscopic damage is less, there is no steel-concrete group
Close the effective ways of beam interface damage monitoring.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of steel-concrete based on marmem
Interface damage monitors and reinforcement means, for monitoring Interface of Steel-Concrete Composite Beams faulted condition in real time, and is directed to different damages
Wound level carries out combined interface different degrees of reinforcing.Make full use of the temperature and resistive performance of shape-memory alloy wire SMA
Shape-memory alloy wire SMA is embedded in concrete by feature, and peg is connect with combination beam inner boundary and section steel beam is connected, or
It winds, be fixed on interface connection peg surface, shape-memory alloy wire SMA passes through conducting wire W and externally measured control system MC phases
Even, thus Measurement and Control System MC real time monitoring shape-memory alloy wire SMA resistances and length variation obtain opposite in combination beam
Sliding and peg deformation damage.When combination beam interface damage degree is more than certain threshold value, Measurement and Control System MC is to shape for triggering
Shape memory alloys silk SMA carries out heating control, and shape-memory alloy wire SMA is deformed along combination beam inner boundary Relative sliding or peg
Negative direction applies restoring force, is reinforced to combination beam interface.If interface damage degree is more serious (such as B alloy wire is broken), also
It can be in the milk, be repaired to combination beam interface by reserved hole.Embodiment of the present invention is simple, flexibly, feasibility it is strong and
The interface monitoring and actively adjustable reinforcing of combination beam in long period may be implemented in good compatibility.
Technical scheme of the present invention：
A kind of monitoring of steel-concrete interface damage and reinforcement means based on marmem, are as follows：
Steel-concrete composite beam mainly connects peg by the reinforced concrete plate RCS on the section steel beam SB of lower part, top with interface
HS is formed, and interface connection peg HS is for the section steel beam SB of the reinforced concrete plate RCS on top and lower part to be connected as one；Shape
Memory alloy wire SMA is embedded in concrete, is arranged in around the connection peg HS of interface, is played sensing, and is provided reversed extensive
Multiple power connects peg HS deformations with interface for measuring steel-concrete interface sliding；
Measurement and Control System MC is connected by conducting wire W with the both ends of shape-memory alloy wire SMA, Measurement and Control System MC
The resistance of shape-memory alloy wire SMA and length variation in steel-concrete composite beam are recorded, is obtained in steel-concrete composite beam
Interface Relative sliding and peg deformation damage information；When combination beam interface damage degree is more than threshold value, by measuring control system
Unite MC heated shape memory alloy silk SMA, makes shape-memory alloy wire SMA occur to restore deformation, along steel-concrete composite beam
Relative sliding and deformation negative direction apply restoring force and restraining force, are reinforced to steel-concrete composite beam.
There are four types of the arrangements of shape-memory alloy wire SMA, forms a variety of interface monitorings and reinforcing mode：(1) shape
One end of memory alloy wire SMA is fixed on the connection peg HS of interface, is fixed on after other end oblique pull on section steel beam SB；(2) shape
The both ends of shape memory alloys silk SMA are separately fixed on the connection peg HS of two adjacent interfaces, shape-memory alloy wire SMA with
The upper surfaces section steel beam SB are arranged in parallel；(3) both ends of shape-memory alloy wire SMA connect peg HS with same interface and are connected, edge
Interface connects peg HS arrangements, and the two is fixed as one；(4) shape-memory alloy wire SMA is wrapped in interface connection peg HS tables
Face.
The shape-memory alloy wire SMA, be the compound memorial alloy of Ti-Ni bases, also can be selected it is satisfactory other
Marmem.
The bottom of the reinforced concrete plate RCS is equipped with grouting mouth GH close to interface connection peg HS, is used for steel-coagulation
Slurry is perfused in native combination beam interface, strengthens damage interface.
The interface connection peg HS and shape-memory alloy wire SMA replaces with marmem peg SMHS, shape
Shape memory alloys peg SMHS is directly connect by conducting wire W with Measurement and Control System MC, is made peg damage monitoring and is reinforced more
It is convenient；Marmem peg SMHS is that marmem is dissolved into steel peg, and peg is made to have shape memory work(
Energy.
Section steel beam SB can be the girder steel of various section forms, such as T-type beam, I-beam, U-shaped beam etc., or compound
Section steel beam, such as the compound section steel beam of FRP/ steel；Reinforced concrete plate RCS may be plain concrete, fiber concrete or pitch etc..
Shape-memory alloy wire SMA has lower martensite start temperature Ms and higher austenite start temperature As,
It is not varied with temperature with ensureing to close shape-memory alloy wire SMA shapes under room temperature service state；Shape-memory alloy wire SMA tools
Have from perceptual performance, resistance changes sensitivity with length, and resistance variations can be efficiently transmitted to Measurement and Control System MC.
Shape-memory alloy wire SMA should be wrapped in protective layer, formed shape memory alloy wires, prevented shape memory from closing
Spun gold SMA is in direct contact with concrete.Shape-memory alloy wire SMA should also have big recovery strain, export stress, resistance change greatly
Change it is apparent, accurately control, the overall characteristics such as the good, signal shielding of durability.Shape-memory alloy wire SMA diameters, length etc. can
Specifically to be determined according to actual conditions.
The inclined direction of shape-memory alloy wire SMA arrangements should determine that the overall principle is shape according to combination beam stressing conditions
The restoring force or restraining force that shape memory alloys silk SMA is generated can hinder combination beam interface sliding and peg to deform.In view of group
Conjunction beam is larger in beam-ends interface sliding amount and deformation has symmetry, therefore shape-memory alloy wire SMA answers emphasis to be arranged in beam-ends,
And both ends shape-memory alloy wire SMA inclined directions are opposite.
To ensure to measure accurate and providing enough Reverse recovery power and restraining force, shape-memory alloy wire SMA can be adopted
With using single, more or spiral winding etc., specific angle of inclination, quantity, diameter, the winding number of turns, length and spacing etc. are by real
Border demand.Shape-memory alloy wire SMA connect peg HS and the junctions section steel beam SB with interface, with glue, epoxy resin or its
His adhesive is individually fixed, protects.
The mode of spiral winding may be used in the connection that shape-memory alloy wire SMA connect peg HS with interface, can also
Welding is connected with bonding agent, and the connection of shape-memory alloy wire SMA and section steel beam SB preferably uses welding or bonding agent to connect, and answers
Ensure that B alloy wire stretches and without primary stress and welding residual stress, shape-memory alloy wire SMA and conducting wire W preferably uses welding.
The welding that shape-memory alloy wire SMA connect peg HS, section steel beam SB and conducting wire W with interface preferably uses soldering, or
Other reliable connection types all apply glue or epoxy resin to reduce the energy loss at tie point at all tie points
Equal adhesive materials carry out individually fixed, protection.Shape-memory alloy wire SMA is wound on the connection peg HS of interface or installation is complete
Afterwards, it also needs that the positions shape-memory alloy wire SMA are fixed with glue, and takes safeguard measure.
Interface connection peg HS can select standard peg specified in related specifications, standard, or specific customization
High-strength peg, oval cross section peg etc., be subject to and meet design requirement.Interface connects the distance s of peg HS according to steel-coagulation
Native combination beam design requirement determines.
Conducting wire W can be ordinary copper matter conducting wire, or other types conducting wire, should have durability it is good, convenient for be laid with
With the overall characteristics such as protection, long transmission distance and signal shielding.
The concrete compression side near the connection peg HS of interface should be arranged in grout hole GH, when larger damage occurs for combination beam interface
It, can be by grout hole GH to priming petock at combination beam interface and damaged concrete when hindering (such as shape-memory alloy wire SMA fractures)
Mud or other reinforcing slurries.
Measurement and Control System MC is connected by conducting wire W with shape-memory alloy wire SMA or marmem peg SMHS,
It monitors shape-memory alloy wire SMA or marmem peg SMHS resistance and length variation in real time, thus obtains combination beam
Inner boundary slides and peg deforms equivalent damage information.After combination beam damage reaches a certain level, Measurement and Control System MC is to shape
Shape memory alloys silk SMA or marmem peg SMHS carry out heating control, shape-memory alloy wire SMA or shape memory
Heated generate of alloy peg SMHS shrinks recovery deformation, opposition is caused between peg and section steel beam or between peg, or about
Beam peg deforms, and is reinforced to combination beam interface, and interface damage is prevented further to develop.
The present invention operation principle be：The both ends of shape-memory alloy wire SMA are connect peg HS with section steel beam SB, interface
It is connected, or is fixed on the interface surfaces connection peg HS, shape-memory alloy wire SMA, which is controlled by conducting wire W with external measurement, is
The MC that unites is connected.Under external load effect, interface Relative sliding and peg deformation can occur in combination beam, and then shape memory is caused to close
The variation of spun gold SMA length and resistance, Measurement and Control System MC real time monitoring shape-memory alloy wire SMA resistances and length become
Change, thus obtains the sliding of combination beam inner boundary and peg deformation.
Measurement and Control System MC identifies its degree of injury according to interface sliding and peg deformation etc., when interface damage reaches one
When determining threshold value, triggering Measurement and Control System MC carries out heating control to shape-memory alloy wire SMA, brings it about recovery deformation,
Shape-memory alloy wire SMA applies restoring force or restraining force along combination beam inner boundary Relative sliding or peg deformation negative direction, right
Combination beam interface is reinforced.For different level of damage, heating control in various degree is carried out to shape-memory alloy wire SMA
System applies different degrees of Reverse recovery power and restraining force, realizes to the real-time of combination beam interface sliding, dynamic monitoring and active
It is adjustable to reinforce.In the case of structural damage is more serious, such as interface sliding amount is larger, B alloy wire is pulled off, and can also pass through
Reserved grouting mouth GH is in the milk to combination beam interface, is reinforced.Primary actively heating constraint is often carried out, structural interface need to be damaged
Hinder information to be reset, and again carry out heating constraint heating temperature must be over before control temperature.
Beneficial effects of the present invention：
Compared with prior art, the present invention is partial to the problem of macroscopic view for existing combination beam damage monitoring with reinforcement technique,
From microcosmic angle, it is combined the monitoring of beam interface damage and reinforces.Make full use of the property of New Shape Memory Alloys material
Can advantage, provide it is a kind of based on marmem steel-concrete interface damage monitoring and reinforcement means, filled up steel-
Combined concrete interface monitors and is actively adjusted the blank of reinforce etc..This method also achieves combination beam interface damage prison
The intelligence surveyed and reinforced takes different Scheme of Strengthening with microcosmicization for different interface damages, can effectively prevent structure
The generation of major injury, and then ensure safety of structure and durability.
In the present invention, it has been that sensing is made to make full use of the temperature and resistive performance feature of marmem SMA, B alloy wire
With while being also used as driving element, using the feature that B alloy wire resistance variations are apparent, the sensitivity that interface sliding measures is also significantly
It improves.Embodiment of the present invention is simple, B alloy wire flexible arrangement, feasibility are strong and good compatibility, is suitable for all kinds of civil structures,
It is damage monitoring and actively adjustable reparation that combination beam interface in long period, which may be implemented, has tremendous economic and social benefit.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention one；
Fig. 2 is the schematic diagram of the embodiment of the present invention two；
Fig. 3 is the schematic diagram of the embodiment of the present invention three；
Fig. 4 is the schematic diagram of the embodiment of the present invention four；
Fig. 5 is the schematic diagram of the embodiment of the present invention five
In figure：SB section steel beams；RCS reinforced concrete plates；The interfaces HS connect peg；S peg spacing；SMA marmems
Silk；SMHS marmem pegs；W conducting wires；GH grouting mouths；MC Measurement and Control Systems.
Specific implementation mode
Below in conjunction with attached drawing and technical solution, the specific implementation mode that further illustrates the present invention.
Embodiment one
As shown in Figure 1, the steel-concrete interface monitoring that present embodiment discloses a kind of based on marmem and actively
Adjustable reinforcement means monitors combination beam interface damage state, and is applied controllably to combination beam interface according to degree of impairment in real time
Inverted constraint power.Embodiment includes：Section steel beam SB, reinforced concrete plate RCS, interface connect peg HS, marmem
Silk SMA, the both ends shape-memory alloy wire SMA connect peg HS and section steel beam SB connections with interface, and be in the milk mouth GH, conducting wire W, measures
Control system MC etc..
Shape-memory alloy wire SMA connects peg HS tension sides, one end and interface at the tilted interface that is arranged in of combination beam
Peg HS connections are connected, and the other end is connect with section steel beam SB, and shape-memory alloy wire SMA and measurement is controlled by conducting wire W
System MC is connected.Under load action, Relative sliding occurs between section steel beam SB and concrete slab in combination beam, leads to interface coupling bar
The shape-memory alloy wire SMA stretcher strains of HS and section steel beam SB are followed closely, shape-memory alloy wire SMA resistance changes, and measures
Control system MC monitors the variation of shape-memory alloy wire SMA resistance in real time, and is scaled combination beam interface sliding amount.
Measurement and Control System MC is according to interface sliding situation identification of damage degree, when interface sliding amount reaches certain threshold value
When, triggering Measurement and Control System MC carries out heating control to shape-memory alloy wire SMA, brings it about recovery deformation, shape note
Recall B alloy wire SMA pegs along combination beam and apply restoring force with combination beam tie point relative displacement negative direction, hinders relative deformation
Generation, combination beam interface damage is repaired.For different level of damage, shape-memory alloy wire SMA is carried out not
Heat and control with degree, apply different degrees of Reverse recovery power, realize to the real-time of combination beam interface sliding, dynamic monitoring with
It is actively adjustable to reinforce.
In the present embodiment, use at interface connection peg HS and shape-memory alloy wire SMA tie points shift value as coagulation
Native plate shift value, obtained combination beam interface sliding value is relatively accurate, and marmem SMA arranges quantity and connected at interface
Link position on peg HS can determine as the case may be.In the case of structural damage is more serious, as interface sliding amount compared with
Greatly, B alloy wire is pulled off, and can be also in the milk, be repaired to combination beam interface by reserved grouting mouth GH.
Embodiment two
As shown in Fig. 2, the both ends shape-memory alloy wire SMA are separately connected two adjacent interface coupling bars in the present embodiment
HS is followed closely, is arranged in parallel with the upper surfaces section steel beam SB.In specific implementation process, interface connection peg HS occurs under outer load action
Relative deformation causes shape-memory alloy wire SMA deformations and resistance variations, Measurement and Control System MC to connect by direct measure interface
Relative deformation between peg HS is connect, calculates indirectly and obtains combination beam interface sliding, it is final to determine combination beam interface damage degree.For
Different interface damages is horizontal, and Measurement and Control System MC carries out heating control in various degree to shape-memory alloy wire SMA, makes it
Occur to restore deformation, different degrees of Reverse recovery power is applied to interface connection peg HS, hinders interface connection peg HS opposite
The generation of deformation.In the case of structural damage is more serious, combination beam interface can also be filled by reserved grouting mouth GH
Slurry is repaired.
Embodiment three
As shown in figure 3, present embodiment discloses a kind of, the steel-concrete interface connection peg based on marmem is supervised
Survey and reinforcement means.The embodiment includes：Section steel beam SB, reinforced concrete plate RCS, interface connect peg HS, and shape memory closes
Spun gold SMA, conducting wire W, Measurement and Control System MC etc..
Shape-memory alloy wire SMA is fixed on interface connection peg HS tension sides, the two cooperative transformation, shape in the present embodiment
The shape memory alloys both ends silk SMA connect peg HS with same interface and are connected, and shape-memory alloy wire SMA resistance and length variation are straight
It is reversed to reflect interface connection peg HS deformations.For the different level of damage of interface connection peg HS, Measurement and Control System MC
To shape-memory alloy wire SMA heating controls, different degrees of recovery deformation is brought it about, shape-memory alloy wire SMA restores
Deformation applies restoring force along interface connection peg HS deformation negative side's shapes, realizes the real-time prison that peg HS deformation damages are connected to interface
It surveys and is reinforced with actively adjustable.
Example IV
As shown in figure 4, shape-memory alloy wire SMA is spirally wound on interface connection peg HS surfaces in the present embodiment, two
Person's cooperative transformation, shape-memory alloy wire SMA resistance and length variation directly reflection interface connect peg HS deformations.For
Different interface connection peg HS damages, Measurement and Control System MC heating control B alloy wires generate different degrees of recovery deformation,
Shape-memory alloy wire SMA restores deformation and generates hoop constraint power to interface connection peg HS, hinders the further of peg deformation
Development realizes that the real-time monitoring that peg HS deformation damages are connected to interface is reinforced with actively adjustable.
Embodiment five
As shown in figure 5, shape-memory alloy wire SMA is no longer used alone in the present embodiment, with marmem peg
SMHS replaces common interface connection peg HS, marmem peg SMHS and directly passes through conducting wire W and Measurement and Control System
MC connections.Measurement and Control System MC directly monitors the resistance variations of marmem peg SMHS, thus obtains shape memory
Alloy peg SMHS deformation damages, and difference is generated according to different degree of injury heating control marmem peg SMHS
Recovery deformation, the same real-time monitoring realized to marmem peg SMHS deformation damages and actively adjustable reinforcing.
It should be pointed out that embodiments described above is only the preferred embodiment of the present invention, the present invention is not limited to above-mentioned
Embodiment can also develop diversified embodiment under the premise of not departing from the principle of the invention and thinking, as shape is remembered
Recall the both ends B alloy wire SMA and is separately connected girder steel and concrete.In addition, in practical application, it is not limited to for specific combination beam
A kind of case study on implementation, such as can in combination beam beam-ends interface sliding larger part application scheme one, the relative deformation of span centre peg compared with
General goal is second-class using scheme.For the monitoring and reinforcing of peg damage, kinds of schemes is also can be used simultaneously, or according to actual demand
Select best monitoring and Scheme of Strengthening.
Also only one of the typical case of the present invention, thinking of the present invention are suitable for all steel-to Interface of Steel-Concrete Composite Beams
Combined concrete interface.
Claims (8)
1. a kind of monitoring of steel-concrete interface damage and reinforcement means based on marmem, which is characterized in that specific step
It is rapid as follows：
Steel-concrete composite beam mainly connects peg by the reinforced concrete plate (RCS) on the section steel beam of lower part (SB), top with interface
(HS) it forms, interface connection peg (HS) is for the section steel beam (SB) of the reinforced concrete plate (RCS) on top and lower part to be connected as
One；Shape-memory alloy wire (SMA) is embedded in concrete, is arranged in around interface connection peg (HS), is played sensing,
And Reverse recovery power is provided, peg (HS) deformation is connected with interface for measuring steel-concrete interface sliding；
Measurement and Control System (MC) is connected by conducting wire (W) with the both ends of shape-memory alloy wire (SMA), Measurement and Control System
(MC) resistance of shape-memory alloy wire (SMA) and length variation in steel-concrete composite beam are recorded, steel-concrete group is obtained
Close beam inner boundary Relative sliding and peg deformation damage information；When combination beam interface damage degree is more than threshold value, pass through measurement
Control system (MC) heated shape memory alloy silk (SMA) makes shape-memory alloy wire (SMA) occur to restore deformation, mixed along steel-
Relative sliding and deformation negative direction apply restoring force and restraining force in solidifying soil combination beam, are reinforced to steel-concrete composite beam.
2. the monitoring of steel-concrete interface damage and reinforcement means according to claim 1 based on marmem,
It is characterized in that, there are four types of the arrangements of the shape-memory alloy wire (SMA), forms a variety of interface monitorings and reinforcing side
Formula：(1) one end of shape-memory alloy wire (SMA) is fixed on interface connection peg (HS), and type is fixed on after other end oblique pull
On girder steel (SB)；(2) both ends of shape-memory alloy wire (SMA) are separately fixed at two adjacent interface connection pegs (HS)
On, shape-memory alloy wire (SMA) is arranged in parallel with the upper surface section steel beam (SB)；(3) both ends of shape-memory alloy wire (SMA)
It connect peg (HS) with same interface to be connected, is arranged along interface connection peg (HS), the two is fixed as one；(4) shape memory
B alloy wire (SMA) is wrapped in interface connection surface peg (HS).
3. a kind of monitoring of steel-concrete interface damage and reinforcing based on marmem according to claim 1 or 2
Method, which is characterized in that the shape-memory alloy wire (SMA) is the compound memorial alloy of Ti-Ni bases.
4. a kind of monitoring of steel-concrete interface damage and reinforcing based on marmem according to claim 1 or 2
Method, which is characterized in that the bottom of the reinforced concrete plate (RCS) is equipped with grouting mouth close to interface connection peg (HS)
(GH), it is used to that slurry to be perfused to Interface of Steel-Concrete Composite Beams, strengthens damage interface.
5. a kind of monitoring of steel-concrete interface damage and reinforcing side based on marmem according to claim 3
Method, which is characterized in that the bottom of the reinforced concrete plate (RCS) is equipped with grouting mouth (GH) close to interface connection peg (HS),
For slurry to be perfused to Interface of Steel-Concrete Composite Beams, strengthen damage interface.
6. a kind of steel-concrete interface damage based on marmem according to claim 1,2 or 5 monitors and adds
Solid method, which is characterized in that the interface connection peg (HS) and shape-memory alloy wire (SMA) replace with shape memory conjunction
Golden peg (SMHS), marmem peg (SMHS) are directly connect by conducting wire (W) with Measurement and Control System (MC), and bolt is made
It follows closely damage monitoring and reinforcing is more convenient；Marmem peg (SMHS) is that marmem is dissolved into steel peg
In, make peg that there is shape memory function.
7. a kind of monitoring of steel-concrete interface damage and reinforcing side based on marmem according to claim 3
Method, which is characterized in that the interface connection peg (HS) and shape-memory alloy wire (SMA) replace with marmem bolt
It follows closely (SMHS), marmem peg (SMHS) is directly connect by conducting wire (W) with Measurement and Control System (MC), and peg is made to damage
Wound monitoring and reinforcing are more convenient；Marmem peg (SMHS) is that marmem is dissolved into steel peg, is made
Peg has shape memory function.
8. a kind of monitoring of steel-concrete interface damage and reinforcing side based on marmem according to claim 4
Method, which is characterized in that the interface connection peg (HS) and shape-memory alloy wire (SMA) replace with marmem bolt
It follows closely (SMHS), marmem peg (SMHS) is directly connect by conducting wire (W) with Measurement and Control System (MC), and peg is made to damage
Wound monitoring and reinforcing are more convenient；Marmem peg (SMHS) is that marmem is dissolved into steel peg, is made
Peg has shape memory function.
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| CN111189404A (en) * | 2020-01-10 | 2020-05-22 | 北京交通大学 | Steel-concrete composite structure damage measurement system |
| CN111259469A (en) * | 2020-01-10 | 2020-06-09 | 成都理工大学 | Self-oscillation frequency analysis method, self-oscillation frequency analysis device, electronic equipment and storage medium |
| FR3098909A1 (en) * | 2019-07-19 | 2021-01-22 | Soletanche Freyssinet | Method for measuring the residual prestressing in a reinforcement |
| CN113640217A (en) * | 2021-10-13 | 2021-11-12 | 武汉地震工程研究院有限公司 | System for monitoring bonding state of concrete interface by steel bonding method |
| CN114263126A (en) * | 2021-12-30 | 2022-04-01 | 山东省路桥集团有限公司 | Method for intelligently controlling crack threshold of concrete beam through strain of SMA wire material or reinforcement material |
| CN114319154A (en) * | 2021-12-30 | 2022-04-12 | 山东省路桥集团有限公司 | Method for intelligently controlling deflection threshold of concrete beam through strain of SMA wire material or rib material |
| CN114438907A (en) * | 2021-12-30 | 2022-05-06 | 山东省路桥集团有限公司 | Method for intelligently controlling deflection threshold of concrete beam by resistivity of SMA wire material or rib material |
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| CN110273384A (en) * | 2019-06-27 | 2019-09-24 | 山东大学 | A kind of bridge Smart self-repairing system and method |
| FR3098909A1 (en) * | 2019-07-19 | 2021-01-22 | Soletanche Freyssinet | Method for measuring the residual prestressing in a reinforcement |
| WO2021013765A1 (en) * | 2019-07-19 | 2021-01-28 | Soletanche Freyssinet | Method for measuring the residual prestress in a reinforcement |
| CN111259469B (en) * | 2020-01-10 | 2022-03-08 | 成都理工大学 | Self-oscillation frequency analysis method, self-oscillation frequency analysis device, electronic equipment and storage medium |
| CN111189404A (en) * | 2020-01-10 | 2020-05-22 | 北京交通大学 | Steel-concrete composite structure damage measurement system |
| CN111259469A (en) * | 2020-01-10 | 2020-06-09 | 成都理工大学 | Self-oscillation frequency analysis method, self-oscillation frequency analysis device, electronic equipment and storage medium |
| CN111189404B (en) * | 2020-01-10 | 2020-12-22 | 北京交通大学 | Steel-concrete composite structure damage measurement system |
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| CN111155785B (en) * | 2020-01-20 | 2024-03-26 | 同济大学 | Damaged steel plate reinforcing device and reinforcing method |
| CN113640217B (en) * | 2021-10-13 | 2022-01-21 | 武汉地震工程研究院有限公司 | System for monitoring bonding state of concrete interface by steel bonding method |
| CN113640217A (en) * | 2021-10-13 | 2021-11-12 | 武汉地震工程研究院有限公司 | System for monitoring bonding state of concrete interface by steel bonding method |
| CN114263126A (en) * | 2021-12-30 | 2022-04-01 | 山东省路桥集团有限公司 | Method for intelligently controlling crack threshold of concrete beam through strain of SMA wire material or reinforcement material |
| CN114319154A (en) * | 2021-12-30 | 2022-04-12 | 山东省路桥集团有限公司 | Method for intelligently controlling deflection threshold of concrete beam through strain of SMA wire material or rib material |
| CN114438907A (en) * | 2021-12-30 | 2022-05-06 | 山东省路桥集团有限公司 | Method for intelligently controlling deflection threshold of concrete beam by resistivity of SMA wire material or rib material |
| CN114438907B (en) * | 2021-12-30 | 2024-03-12 | 山东省路桥集团有限公司 | Method for intelligently controlling deflection threshold of concrete beam by using resistivity of SMA wire or rib |
| CN114319154B (en) * | 2021-12-30 | 2024-03-12 | 山东省路桥集团有限公司 | Intelligent control method for deflection threshold of concrete beam by using SMA wire or rib strain |
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