CN106703224A - Overlength concrete wall crack control design method based on hidden-type crack induction inserts - Google Patents
Overlength concrete wall crack control design method based on hidden-type crack induction inserts Download PDFInfo
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- CN106703224A CN106703224A CN201710006429.5A CN201710006429A CN106703224A CN 106703224 A CN106703224 A CN 106703224A CN 201710006429 A CN201710006429 A CN 201710006429A CN 106703224 A CN106703224 A CN 106703224A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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Abstract
The invention discloses an overlength concrete wall crack control design method based on hidden-type crack induction inserts. A crack control device comprises concrete reinforcement bars in a concrete wall. A first reinforcement bar fixing frame and a second reinforcement bar fixing frame are arranged in a wall body between the concrete reinforcement bars. A first cross-shaped insert and a second cross-shaped insert, both formed by bending of steel plates, are arranged at the bottoms of the first reinforcement bar fixing frame and the second reinforcement bar fixing frame. The overlength concrete wall crack control design method has the advantages that the hidden-type crack induction inserts have low tensile strength and can deform greatly under the action of horizontal force, and accordingly, good temperature stress release effect can be achieved; the steel plates are free from leakage risks under tension, so that wall cracks can be controlled well, and the water stop effect can be achieved.
Description
Technical field
It is specially a kind of using implicit crack-induced plate the present invention relates to concrete wall Crack Control Technology field
Ultra-long concrete wall body slit control design case method.
Background technology
Ultra-long concrete wall body structure refers to that construction unit length has exceeded the reinforced concrete structure of specification defined and stretches
The concrete wall structure of the maximum spacing of contracting seam, although or expansion joint spacing not less than Criterion restriction structure difference variation compared with
Greatly, the larger reinforced concrete wall structure of concrete shrinkage.《Code for design of concrete structures》GB50010-2010 specifies：Typically
Reinforced concrete structure expansion joint maximum spacing, for class formations such as cast-type retaining wall, basement side walls, be in indoor or soil
30m, outdoor is 20m.
It is well known that concrete material compression strength is high, tensile strength is but very low, particularly for the concrete for pumping,
Its aggregate diameter is small, and slump is big, itself is more easy to crack caused by Shrinkage and temperature stress occur.Ultra-long concrete wall body structure
Belong to high-order redundant structure, and the thickness of wall compares very little with length, by concrete hydrating heat release, concrete shrinkage, season
The temperature and shrinkage stress that section temperature difference etc. causes are protruded, and engineering experience is proved：Length is more long, and crack is more, and width is bigger.Although
This kind of crack belongs to non-loading cracking, element bearing capacity and structure safety will not be typically influenceed in a short time, but can influence structure
Durability, globality and water proofing property, long-term crack infiltration can cause steel bar corrosion and influence structure long-term safety, while crack
Also sense organ and psychological harmful effect can be brought with infiltration to user.
The representative of ultra-long concrete wall body structure is the outer wall of basement having a large capacity and a wide range, and it receives to use function and basement anti-
The limitation of water requirement, generally can not set movement joint, but in architectural design at present, and most basement length are considerably beyond rule
Model sets the regulation of the maximum spacing (being 30m in indoor or soil) at expansion joint on concrete structure, and splitting occurs in concrete wall
The phenomenon of seam is very important.Investigation shows, 100 basements 95 have a crack, in addition only 50-60 meters of length small basement side
Wall also has crack；Outer wall cracking is particularly pertinent, and its quantity is accounted for by more than the 85% of investigation engineering number.Occur splitting in concrete wall
It is not only expensive, time-consuming, laborious, it is necessary to slip casing by pressure fracture is carried out to it carries out Seal treatment after seam, and differ and surely eradicate
Crack, economic loss is larger.Therefore, the crack Control Measures and method for designing of novel ultralong concrete wall structure are researched and developed
Be of great practical significance.
At present, the general method for controlling crack that ultra-long concrete wall body structure is used has two major classes, and a major class is concrete
Composition and Construction control (conventional method), another major class is to take special construction measure.The former mixes before having concreting
Strengthen concrete moisture retention maintenance etc. when micro-expanding agent (anti-crack fiber), construction after the completion of setting post-cast strip, construction, such measures can
Reduce concrete shrinkage stress in itself or improve its tensile strength but amplitude is very limited, when wall length exceedes to a certain degree
When, its effect is unsatisfactory.The latter is the new method for occurring in recent years, i.e., reduced by taking special construction measure
The crack of concrete wall structure, what is commonly used in engineering is to set crack-induced stitch.The method is in the middle part of concrete wall
It is artificial that straight joint is set, the weak part of wall is made, the random distress in concrete for occurring is guided to the fixed position, it is convenient
Later stage crack searching and repairing treatment, are a big changes of ultra-long concrete wall body slit control thinking：Since crack is difficult to keep away
Exempt from, not as allowing it to concentrate at one, unlikely making a difference everywhere uses.But attractive joint is after all outseam, seam is wide can be bright with temperature
Aobvious change, also set every 100-150 meter one in being typically designed, and stress concentration phenomenon is obvious so that seepage at attractive joint
Seriously, engineer applied experience have shown that some attractive joints maintenance after not timing cracking, it is difficult to repair completely, later maintenance is cumbersome.
In special measure method, the method that segmentation plate is set newly is occurred in that in recent years, i.e., in the middle part of concrete wall
Set sheet metal to split the kernel of concrete wall, be used to discharge non-load (temperature and concrete shrinkage) effect.One
As vertically split with sheet metal (1mm thick) along wall length direction in the kernel concrete of concrete wall, then perpendicular to point
Steel plate for sealing water (3mm is thick) is set every the axial location of steel plate, both form cross plate by vertical weld seam, and typical practice is shown in
Fig. 1, is positioned between the bar-mat reinforcement of the side of wall two.Meanwhile, in order to avoid the surface crack of concrete wall is produced, supplement is set
The deformed bar of soap-free emulsion polymeization, typically sets a branch of every 300mm or so, and length is typically at 30 meters or so.Due to the method
There are some defects in construction and working measure, often do not reach estimated effect, and practical implementation is few.
Typical crack control method is poured after being set when being and micro-expanding agent (anti-crack fiber), construction are mixed before concreting
Band, construction after the completion of strengthen concrete moisture retention maintenance etc., because concreting construction condition, construction technology, environmental condition,
Concrete self performance is different, and to play how many effects still unknowable for these measures in Practical Project, can only based on measure
Generally use, the concrete wall structure for more than 150 meters in Practical Project, such as without special effective measures, its crack
Quantity and size can be in runaway condition.Crack-induced seam is set, and such as setting quantity is few, then setting seepage at seam seriously, can repeatedly
Cracking, it is difficult to repair completely, later maintenance is pretty troublesome.Some engineering experiences teach that, even if there is provided crack-induced outseam,
A large amount of cracks are still had on concrete wall to occur, actual effect with contemplate that larger difference.The master of segmentation poling board method is set
Wanting defect has：A) segmentation steel plate and steel plate for sealing water are relatively thin, easily burn-through pore-forming during welding, it is impossible to sealing and cause wall leakage.
B) concrete of segmentation steel plate both sides exists with steel plate for sealing water and bonds, and field test proves that its cohesive force is very big, causes to split steel
The concrete of plate both sides is actually an entirety, and wall cannot be separated when shrinking, and sealing is possibly even made when lowering the temperature larger
The weld seam of steel plate is broken and loses sealing energy and global failure.C) plate cannot be positioned without fixation before concreting,
Being shocked and steel plate thickness is minimum, during concreting under rod is acted on cannot keep free standing condition, it is difficult to ensure that operational phase can reach
To desired effects.D) plate after-pouring concrete is set and after reaching intensity, concrete wall is to carry out tensioning soap-free emulsion polymeization in advance should
Power reinforcing bar, segmentation steel plate both sides concrete is packed together to complete wall again under prestressing force effect, it is impossible in temperature load
Separated in time under contraction, it is impossible to play predetermined action.
It is newly-built the problems such as to solve parking, equipment machine room, underground civil defense engineering with the fast development in economy and city
The more and more setting basements of building, its planar dimension is also improved constantly, and maximum can not set seam length in existing engineering construction
Degree is up to 500 meters or so.Directly against the effect of underground water and soil, the generation and development in crack can cause concrete wall structure
The generation of seepage, small, the normal of influence basement is used, and safety of structure is then influenceed greatly.
The content of the invention
It is an object of the invention to provide a kind of ultra-long concrete wall body slit control using implicit crack-induced plate
Method for designing, the device of Crack Control is included between the concrete reinforcement body being arranged in concrete walls, the concrete reinforcement body
Wall in be provided with the first reinforcing bar fixed mount and the second reinforcing bar fixed mount, the first reinforcing bar fixed mount and the second reinforcing bar are fixed
Frame bottom be provided with using steel plate bending into the first cross plug board and the second cross plug board.
Preferably, rivet is used between first cross plug board and the second cross plug board.
Preferably, first cross plug board and the second cross plug board and the first reinforcing bar fixed mount and the second reinforcing bar fixed mount
Between fixed using riveting method.
A kind of ultra-long concrete wall body slit control design case method using implicit crack-induced plate, including following step
Suddenly：
S1：Calculation method for stress of the ultra-long concrete wall body structure under the effect of comprehensive equivalent temperature difference preferably uses consideration material
Nonlinear elastic and plastic finite element method, when concrete wall total length L meets L≤[Lmax] andWith
Cx=Cx1+Cx2It is required that, can only carry out the temperature stress calculation of elastic stage.
S2：Finite element method (fem) analysis basic principle,
1) using the finite element analysis software for considering material nonlinearity, the general finite element analysis such as optional ABAQUS, ANSYS
Software；
2) concrete panel preferably use consider in-plane stress two-dimentional film unit or Slab element simulate, beam column bar preferably use with
Beam element or bar unit simulation that two-dimensional cell is coordinated, 3D solid unit simulation is used when stress concentration phenomenon is obvious；
3) material constitutive relation of concrete and reinforcing bar can be pressed《Code for design of concrete structures》(GB50010) appendix C phase
Regulation is closed to select；
4) modeling scope should be chosen by engineering practice, when the stiffness of structural member contribution for considering to be connected with concrete panel
When, overhanging modeling size is not preferably less than 10 times of connecting elements larger thickness；
5) boundary condition of Rational choice FEM model, what is relatively guarded is typically fixed using wall bottom, and top is certainly
By boundary condition, bottom wallboard and the soil body friction rigidity are also contemplated for when having ready conditions, are such as supported in pile foundation and are also contemplated for stake
Horizontal restraint rigidity of the base to wallboard.When considering that base plate and top board scope are modeled by 4 sections, boundary condition can be taken as hold-down support；
6) there is the judgment criterion in crack in wall, and strength indexes of concrete can use its strength standard value when elastic stage is calculated
(fck, ftk), it is desirable when elastic-plastic phase is calculated to allow the corresponding ultimate tensile strength of fracture width (typically desirable 400 μ ε).
S3：Wall length meets L≤[Lmax] andAnd Cx=Cx1+Cx2It is required that wall
Structure can carry out Reinforcement Design by elastic temperature stress calculating results, when being unsatisfactory for, be set using between the bar-mat reinforcement of wall both sides
Segmentation steel plate mode carries out Crack Control Design；
S4：Segmentation steel plate is set between the bar-mat reinforcement of wall both sides, and its design should meet claimed below：
1) the wall body structure computation model that simulation sets segmentation steel plate should be set up, using the elastoplasticity for considering material nonlinearity
Finite element method (fem) analysis, the result of calculation for carrying out spacing by wall vertical crack determines that plate sets spacing L, L and is not preferably greater than 18
Rice；
2) implicit induction plate preferably selects the sheet metal of 2mm, and steel plate side to wall edge should be greater than 2 times of protective layer thickness,
And the segmentation steel plate big value for not being preferably less than 150 and 1/3 wallboard thickness long；
3) reply sets the wall body structure after separating steel plate and calculates comprehensive using the PLASTIC FINITE ELEMENT ANALYSIS for considering material nonlinearity
Close the lower stress of equivalent temperature effect, and be separated steel plate spacing inner wall and separate steel plate set the arrangement of reinforcement of scope wall with
Crack-resisting design；
4) segmentation steel plate set scope wall can using it is local add the horizontal bar dowel of wall by the way of control critical eigenvalue it is wide
Degree, when crack is unsatisfactory for code requirement, should reduce segmentation steel plate and set spacing, reduce fragmenting plate region internal stress and split with meeting
Seam control is required.
Compared with prior art, the beneficial effects of the invention are as follows：Implicit induction plate tension rigidity in the present invention is smaller,
Very large deformation can occur under horizontal force action, more preferable temperature stress releasing effect can be reached, and steel plate is in pulling force effect
Lower ne-leakage risk, therefore wall body slit can be better controled over, more preferable sealing effect can be played.The present invention is pre- using rivet
Connection, final product quality easily ensures, while convenience and reliability when the setting of support also ensure that construction.Proposed in the present invention
Complete implicit induction patch panel design method, is given the wall body slit spacing estimation equation of simplicity and is inserted based on implicit induction
The PLASTIC FINITE ELEMENT ANALYSIS calculation and analysis methods and crack Control Measures of plate.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the apparatus structure schematic diagram of Crack Control of the present invention.
In figure：1 concrete reinforcement body, 2 first reinforcing bar fixed mounts, 3 first cross plug boards, 4 second reinforcing bar fixed mounts, 5
Two cross plug boards, 6 rivets.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment 1
A kind of ultra-long concrete wall body slit control design case method using implicit crack-induced plate, the dress of Crack Control
Put and be provided with the first steel in the wall between the concrete reinforcement body 1 including being arranged in concrete walls, the concrete reinforcement body 1
The reinforcing bar fixed mount 4 of muscle fixed mount 2 and second, the first reinforcing bar fixed mount 2 and the bottom of the second reinforcing bar fixed mount 4 are provided with and use steel
The first cross plug board 3 and the second cross plug board 5 that plate is bent into.
Riveted using rivet 6 between the cross plug board 5 of first cross plug board 3 and second.
Between the cross plug board 5 of first cross plug board 3 and second and the first reinforcing bar fixed mount 2 and the second reinforcing bar fixed mount 4
Fixed using riveting method.
A kind of ultra-long concrete wall body slit control design case method using implicit crack-induced plate, it is characterised in that：
Comprise the following steps：
S1：Calculation method for stress of the ultra-long concrete wall body structure under the effect of comprehensive equivalent temperature difference preferably uses consideration material
Nonlinear elastic and plastic finite element method, when concrete wall total length L meets L≤[Lmax] andAnd Cx=Cx1+Cx2It is required that, can only carry out the temperature stress calculation of elastic stage.
Concrete limit stretching is strained
| ft,r(N/mm2) | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 |
| εtr(10-6) | 65 | 81 | 95 | 107 | 118 | 128 | 137 |
C' under various grounds and basic constraintx1Value table
Note：1. C' in this tablex1Lower limit be used for embedded depth of foundation and be equal to or less than 5m, higher limit is more than for embedded depth of foundation
5m；
2. when on rock, on mass concrete, pouring novel concrete on bulk armored concrete, C'x1Take 100~150
×10-2N/mm3；
When concrete wall is supported in pile foundation,
In formula：N --- 2 are taken when pile crown is hinged, 4 are taken when affixed；
The elastic modelling quantity (MPa) of E --- pile foundation material；
H --- the horizontal force of pile crown unit sidesway；
F --- area of base F=A × B that each is shared；
F1--- area of base F1=F- π × b2/4；
I --- the moment of inertia (mm in single stake plane of bending4)；
Kh--- foundation level endurance and stiffness, take 1 × 10-2N/mm3；
The diameter (mm) of b --- stake.
S2：Finite element method (fem) analysis basic principle,
1) using the finite element analysis software for considering material nonlinearity, the general finite element analysis such as optional ABAQUS, ANSYS
Software；
2) concrete panel preferably use consider in-plane stress two-dimentional film unit or Slab element simulate, beam column bar preferably use with
Beam element or bar unit simulation that two-dimensional cell is coordinated, 3D solid unit simulation is used when stress concentration phenomenon is obvious；
3) material constitutive relation of concrete and reinforcing bar can be pressed《Code for design of concrete structures》(GB50010) appendix C phase
Regulation is closed to select；
4) modeling scope should be chosen by engineering practice, when the stiffness of structural member contribution for considering to be connected with concrete panel
When, overhanging modeling size is not preferably less than 10 times of connecting elements larger thickness；
5) boundary condition of Rational choice FEM model, what is relatively guarded is typically fixed using wall bottom, and top is certainly
By boundary condition, bottom wallboard and the soil body friction rigidity are also contemplated for when having ready conditions, are such as supported in pile foundation and are also contemplated for stake
Horizontal restraint rigidity of the base to wallboard.When considering that base plate and top board scope are modeled by 4 sections, boundary condition can be taken as hold-down support；
6) there is the judgment criterion in crack in wall, and strength indexes of concrete can use its strength standard value when elastic stage is calculated
(fck, ftk), it is desirable when elastic-plastic phase is calculated to allow the corresponding ultimate tensile strength of fracture width (typically desirable 400 μ ε).
S3：Wall length meets L≤[Lmax] andAnd Cx=Cx1+Cx2It is required that wall
Structure can carry out Reinforcement Design by elastic temperature stress calculating results, when being unsatisfactory for, be set using between the bar-mat reinforcement of wall both sides
Segmentation steel plate mode carries out Crack Control Design；
S4：Segmentation steel plate is set between the bar-mat reinforcement of wall both sides, and its design should meet claimed below：
1) the wall body structure computation model that simulation sets segmentation steel plate should be set up, using the elastoplasticity for considering material nonlinearity
Finite element method (fem) analysis, the result of calculation for carrying out spacing by wall vertical crack determines that plate sets spacing L, L and is not preferably greater than 18
Rice；
2) implicit induction plate preferably selects the sheet metal of 2mm, and steel plate side to wall edge should be greater than 2 times of protective layer thickness,
And the segmentation steel plate big value for not being preferably less than 150 and 1/3 wallboard thickness long；
3) reply sets the wall body structure after separating steel plate and calculates comprehensive using the PLASTIC FINITE ELEMENT ANALYSIS for considering material nonlinearity
Close the lower stress of equivalent temperature effect, and be separated steel plate spacing inner wall and separate steel plate set the arrangement of reinforcement of scope wall with
Crack-resisting design；
4) segmentation steel plate set scope wall can using it is local add the horizontal bar dowel of wall by the way of control critical eigenvalue it is wide
Degree, when crack is unsatisfactory for code requirement, should reduce segmentation steel plate and set spacing, reduce fragmenting plate region internal stress and split with meeting
Seam control is required.
Implicit induction plate tension rigidity in the present invention is smaller, and very large deformation, energy can occur under horizontal force action
Reach more preferable temperature stress releasing effect, and steel plate ne-leakage risk under a stretching force, therefore wall can be better controled over
Body crack, can play more preferable sealing effect.The present invention uses rivet pre-connection, final product quality easily ensures, while support sets
Put the convenience and reliability when also ensure that construction.Complete implicit induction patch panel design method is proposed in the present invention, is given
Gone out simplicity wall body slit spacing estimation equation and the PLASTIC FINITE ELEMENT ANALYSIS calculation and analysis methods based on implicit induction plate and
Crack Control Measures.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of ultra-long concrete wall body slit control design case method using implicit crack-induced plate, the device of Crack Control
Including the concrete reinforcement body (1) being arranged in concrete walls, it is characterised in that：Wall between the concrete reinforcement body (1)
In be provided with the first reinforcing bar fixed mount (2) and the second reinforcing bar fixed mount (4), the first reinforcing bar fixed mount (2) and the second reinforcing bar
Fixed mount (4) bottom be provided with using steel plate bending into the first cross plug board (3) and the second cross plug board (5).
2. a kind of ultra-long concrete wall body slit control design case using implicit crack-induced plate according to claim 1
Method, it is characterised in that：Riveted using rivet (6) between first cross plug board (3) and the second cross plug board (5).
3. a kind of ultra-long concrete wall body slit control design case using implicit crack-induced plate according to claim 1
Method, it is characterised in that：First cross plug board (3) and the second cross plug board (5) and the first reinforcing bar fixed mount (2) and second
Reinforcing bar fixed mount is fixed between (4) using riveting method.
4. a kind of ultra-long concrete wall body slit control design case using implicit crack-induced plate according to claim 1
Method, it is characterised in that：Comprise the following steps：
S1：Calculation method for stress of the ultra-long concrete wall body structure under the effect of comprehensive equivalent temperature difference preferably uses consideration material non-thread
The elastic and plastic finite element method of property, when concrete wall total length L meets L≤[Lmax] and
And Cx=Cx1+Cx2It is required that, can only carry out the temperature stress calculation of elastic stage.
S2：Finite element method (fem) analysis basic principle,
1) using the finite element analysis software for considering material nonlinearity, the general finite element analysis such as optional ABAQUS, ANSYS are soft
Part；
2) concrete panel preferably uses the two-dimentional film unit or Slab element that consider in-plane stress to simulate, and beam column bar is preferably used and two dimension
Beam element or bar unit simulation that unit is coordinated, 3D solid unit simulation is used when stress concentration phenomenon is obvious；
3) material constitutive relation of concrete and reinforcing bar can be pressed《Code for design of concrete structures》(GB50010) the related rule of appendix C
It is fixed to select；
4) modeling scope should be chosen by engineering practice, when the stiffness of structural member for considering to be connected with concrete panel is contributed, outward
Stretch 10 times that modeling size is not preferably less than connecting elements larger thickness；
5) boundary condition of Rational choice FEM model, what is relatively guarded is typically fixed using wall bottom, and top is free
Boundary condition, also contemplates for bottom wallboard and the soil body friction rigidity, is such as supported in pile foundation and also contemplates for pile foundation pair when having ready conditions
The horizontal restraint rigidity of wallboard.When considering that base plate and top board scope are modeled by 4 sections, boundary condition can be taken as hold-down support；
6) there is the judgment criterion in crack in wall, and strength indexes of concrete can use its strength standard value (f when elastic stage is calculatedck,
ftk), it is desirable when elastic-plastic phase is calculated to allow the corresponding ultimate tensile strength of fracture width (typically desirable 400 μ ε).
S3：Wall length meets L≤[Lmax] andAnd Cx=Cx1+Cx2It is required that wall body structure can
Reinforcement Design is carried out by elastic temperature stress calculating results, when being unsatisfactory for, steel is split using being set between the bar-mat reinforcement of wall both sides
Plate mode carries out Crack Control Design；
S4：Segmentation steel plate is set between the bar-mat reinforcement of wall both sides, and its design should meet claimed below：
1) the wall body structure computation model that simulation sets segmentation steel plate should be set up, using the elastoplastic finite for considering material nonlinearity
Unit calculates analysis, and the result of calculation for carrying out spacing by wall vertical crack determines that plate sets not preferably greater than 18 meters of spacing L, L；
2) implicit induction plate preferably selects the sheet metal of 2mm, and steel plate side to wall edge should be greater than 2 times of protective layer thickness, and divide
Cut the steel plate big value for not being preferably less than 150 and 1/3 wallboard thickness long；
3) reply sets the wall body structure after separating steel plate and calculates comprehensive etc. using the PLASTIC FINITE ELEMENT ANALYSIS for considering material nonlinearity
Stress under effect temperature action, and be separated steel plate spacing inner wall and separate arrangement of reinforcement and cracking resistance that steel plate sets scope wall
Design；
4) segmentation steel plate set scope wall can using it is local add the horizontal bar dowel of wall by the way of control critical eigenvalue width, when
When crack is unsatisfactory for code requirement, segmentation steel plate should be reduced spacing is set, reduce fragmenting plate region internal stress to meet crack control
System is required.
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Cited By (6)
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| CN108612207A (en) * | 2018-05-15 | 2018-10-02 | 上海东方雨虹防水技术有限责任公司 | Concrete induces crack structure and its construction method |
| CN110864839A (en) * | 2019-12-31 | 2020-03-06 | 福州大学 | Internal stress monitoring device for cement concrete pavement slab and using method thereof |
| CN112267344A (en) * | 2020-10-16 | 2021-01-26 | 长沙理工大学 | Crack-inducing member and crack-inducing structure |
| CN112415175A (en) * | 2020-12-15 | 2021-02-26 | 中国路桥工程有限责任公司 | Physical model test device for ground fissure |
| CN113201990A (en) * | 2021-04-22 | 2021-08-03 | 中冶南方城市建设工程技术有限公司 | Shrinkage joint inducing device suitable for cement concrete pavement and construction method |
| CN113818578A (en) * | 2021-09-18 | 2021-12-21 | 北京市建筑设计研究院有限公司 | Induced seam structure with prefabricated connecting piece |
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