CN105675851B - A kind of sticker method for identifying concrete structure crack and whether persistently extending - Google Patents
A kind of sticker method for identifying concrete structure crack and whether persistently extending Download PDFInfo
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- CN105675851B CN105675851B CN201610063908.6A CN201610063908A CN105675851B CN 105675851 B CN105675851 B CN 105675851B CN 201610063908 A CN201610063908 A CN 201610063908A CN 105675851 B CN105675851 B CN 105675851B
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Abstract
The present invention discloses a kind of sticker method for identifying concrete structure crack and whether persistently extending, paper is pasted on the primary fracture of reinforced concrete structure surface, whether continue to produce whether crack and fracture width further expand by observing on paper, as a kind of preliminary method for judging reinforced concrete structure surface crack and whether persistently extending.The present invention uses a kind of economic, applicable, reliable, easy method, with regard to that can identify that existing R.C. structures surface crack is harmless crack or harmful cracks, the detection technique summary whether concrete structure crack is persistently extended, damaged caused by can effectively preventing reinforced concrete structure from can not be found in time because of the lasting extension of fracture width.
Description
Technical field
The present invention relates to building detection technique field, and in particular to whether one kind identification concrete structure crack is held
The sticker method of continuous extension.
Background technology
The structures such as the beam of reinforced concrete structure such as building construction, plate, post, due to settlement of foundation, use environment change or
The reasons such as the fatigue of load long term, corrosion often make structure produce different degrees of internal injury, and these damages are being tied
Structure can directly show as body structure surface cracking during one's term of military service, form structural surface crack.Structural damage tires out all the year round in process
Month it is accumulative after, necessarily cause structural cracks width to extend, when crack extends to structure tensile region reinforcement yielding, just
Reinforcing bar can be caused to break and cause its destruction.In general, reinforced concrete work once destroys, caused life
Life and property loss will be huge, be even more far-reaching and difficult to the appraisal to national economy and the influence of society.
In use, body structure surface often with cement sand plaster and then drapes over one's shoulders putty brush to reinforced concrete structure
White coating, which there is crack, in this surface such as fruit structure clearly to be displayed.And cause reinforced concrete structure table
The reason for face generation crack, has：1. the caused crack due to the plastic shrinkage of concrete；2. drawn due to the drying shrinkage of concrete
The crack risen；3. concrete crack because of caused by temperature change；4. split caused by the differential settlement of concrete structure gene basis
Seam；5. crack caused by improper load action；6. because of design, material, construction and crack caused by the reason such as using；7. other
Reason, as because of mortar and concrete surface with reference to caused by bad generation hollowing crack etc..
Reinforced concrete structure is multicomponent composite materials, and inconsistent feelings are deformed in the change of various conditions and various materials
Under condition, the generation of micro crack is nearly unavoidable, if this micro-cracks do not extend, it is in general industry and the people
It will not be damaged with the normal use of building.Because micro crack is a kind of intrinsic crack of inside concrete, it is
It is incoherent, it is generally present in inside concrete structure, size is smaller, and fracture width is no more than 0.5mm under normal circumstances.So
For reinforced concrete structure, there is a certain degree of crack, passes through sight in the armored concrete for particularly having abundant constructional reinforcement
Its surface crack width is surveyed, as long as fracture width does not extend or small extension to a certain extent, will not cause structure
Ineffectiveness destruction, this crack should be surface crack routinely., whereas if by observation, armored concrete knot is found
Structure surface crack persistently extends or degree of expansion is larger detailed it is necessary to consider to carry out the reason for reinforced concrete structure generation crack
Subdivision analysis, or even consolidation process is carried out to structure, prevent fracture width from further expanding, this crack should be with destructiveness
Structural crack.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of economic, applicable, simple, reliable reinforced concrete structure
The recognition methods whether surface crack width persistently extends, it is intended to carry out the preliminary sieve of reinforced concrete structure surface crack width
Choosing, dynamic observe the long-run development situation in crack, judge whether crack is harmful cracks, prevents reinforced concrete structure because of crack
Width extends and finds or handle to be damaged not in time.Using this method, reinforced concrete structure can be fast and effeciently identified
Surface crack is surface crack routinely or has destructive structural crack.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of sticker method for identifying concrete structure crack and whether persistently extending, comprises the following steps：
1) reinforced concrete structure is observed by the naked eye, region and position caused by range estimation crack, determines primary fracture area
Domain, and paper is pasted in primary fracture region；
2) after with the method directly estimated daily at least observe a paper, check above paper have free from flaw generation,
And the spread scenarios after the generation of crack；
3) by the observation of at least 28 days, as, without crackle is found, illustrated primary fracture not developing deeply on paper, for routine
Property surface crack, structure will not be damaged in itself, only need to slightly handle or not handle and can ensure armored concrete knot
Structure normal use；
4) as produced new crack on paper, illustrate that primary fracture is also developing, then need further to enter Mobile state observation；
5) in Mobile state observation is entered, by the observation of at least 7 days,
5.1) such as directly find that fracture width is progressively extending by naked eyes can, it is a kind of destruction to illustrate this crack
Property structural cracks, need to ask professional team further to detect or reinforce；
5.2) it such as can not directly find that fracture width is progressively extending by naked eyes, at this moment need on this paper again
1 paper is pasted, a paper is at least observed daily with the method directly estimated afterwards, passes through the observation of at least 28 days；A) such as paper
Upper no discovery crackle is opened, it is also more stable to illustrate this crack, and only need to slightly handle can ensure structure normal use；
B) as produced new crack on paper, show that primary fracture width is continuing to extend, it is a kind of destructive structure to illustrate primary fracture
Crack, professional team need to be asked further to detect or reinforce.
Such scheme is preferable, in step 1), after pasting paper, flattens paper with flatiron or hair dryer, makes paper
It is firm with reinforced concrete structure surface mount.
Such scheme is preferable, and in step 1), before pasting paper, first primary fracture region surface is cleaned.
Such scheme is preferable, and the paper is pure white and inelastic paper.
Such scheme is preferable, and the paper is the moderate paper of hardness.
Such scheme is preferable, 5.2) in b), as produced new crack on paper, 1 can be pasted again on this paper
Paper, a paper is at least observed daily with the method directly estimated afterwards, passes through the observation of 31 days；As do not found on paper
Crackle, it is also more stable to illustrate this crack, and only need to slightly handle can ensure structure normal use；As produced on paper
New crack, show that primary fracture width is continuing to extend, it is a kind of destructive structure crack to illustrate primary fracture, need to ask affinity group
Team's further detection or reinforcing.
Compared with prior art, the present invention has advantages below：
1st, using a kind of economic, applicable, reliable, easy method, with regard to that can identify that existing R.C. structures surface is split
Seam is harmless crack or harmful cracks, and the detection technique summary whether concrete structure crack is persistently extended can
Damaged caused by effectively to prevent reinforced concrete structure from can not be found in time because of the lasting extension of fracture width, ensured people
The safety of life and property of the people.
2nd, it is central compared with prior art to ask specialized company to carry out structure detection, testing cost height, the deficiency that time-consuming are caused,
This programme drastically reduce the area input of the people to reinforced concrete structure conventional detection, more economical to be applicable.
Brief description of the drawings
Fig. 1 is the schematic diagram for the reinforced concrete structure that crack occurs；
Fig. 2 is the schematic diagram for the reinforced concrete structure for pasting paper；
Fig. 3 is the schematic diagram in the paper generation crack on reinforced concrete structure；
The process chart that it is the present invention that Fig. 4, which is,.
Label in figure：1st, reinforced concrete structure；2nd, primary fracture；3rd, paper；4th, new crack.
Embodiment
Embodiment 1
A kind of sticker method for identifying concrete structure crack and whether persistently extending, such as Fig. 4 process chart institute
Show, comprise the following steps：
1) discovery (range estimation finds generation and the region in crack) of the surface primary fracture 2 of reinforced concrete structure 1, it is determined that splitting
The position that paper 3 is pasted in face is sewed on, then carries out pasting the cleaning of the basal plane of paper 3, and selects hardness moderate, it is pure white and nonelastic
Paper 3 apply glue, then the paper 3 for scribbling glue is pasted onto on the crack on the surface of reinforced concrete structure 1, and make paper
3 are more than the area in crack, are flattened paper 3 with flatiron or hair dryer, make paper 3 and the surface mount of reinforced concrete structure 1 jail
Gu such as Fig. 1, shown in 2.
2) paper 3 is at least observed daily with the method for range estimation after, checks that paper 3 has free from flaw generation, and split
Spread scenarios after seam generation.
3) by the observation of 28 days, as, without crackle is found, illustrated the not developing deeply of primary fracture 2, for routinely on paper 3
Surface crack, structure will not be damaged in itself, only need to slightly handle or not handle and can ensure reinforced concrete structure 1
Normal use；
4) as produced new crack 4 on paper 3, as shown in figure 3, explanation primary fracture 2 is also developing, then need further to enter
Mobile state is observed.
5) in Mobile state observation is entered, a paper 3 is at least still observed daily with the method for range estimation, checks paper 3
Whether new crack 4 width is extending, and passes through the observation of long-term 7 days；
5.1) such as directly find that fracture width is progressively extending by naked eyes can, it is a kind of destruction to illustrate this crack
Property structural cracks, need to ask professional team further to detect or reinforce；
5.2) such as it can not directly find that fracture width is progressively extending by naked eyes, at this moment need on this paper again
1 paper is pasted, a paper 3 is at least observed daily with the method directly estimated afterwards, passes through the observation of 28 days；A) such as paper 3
Upper no discovery crackle, it is also more stable to illustrate this crack, and only need to slightly handle can ensure structure normal use；b)
As produced new crack 4 on paper 3, show that the width of primary fracture 2 is continuing to extend, it is a kind of destructive knot to illustrate primary fracture 2
Structure crack, professional team need to be asked further to detect or reinforce.
Embodiment 2
A kind of sticker method for identifying concrete structure crack and whether persistently extending, such as Fig. 4 process chart institute
Show, comprise the following steps：
1) discovery (range estimation finds generation and the region in crack) of the surface primary fracture 2 of reinforced concrete structure 1, it is determined that splitting
The position that paper 3 is pasted in face is sewed on, then carries out pasting the cleaning of the basal plane of paper 3, and selects hardness moderate, it is pure white and nonelastic
Paper 3 apply glue, then the paper 3 for scribbling glue is pasted onto on the crack on the surface of reinforced concrete structure 1, and make paper
3 are more than the area in crack, are flattened paper 3 with flatiron or hair dryer, make paper 3 and the surface mount of reinforced concrete structure 1 jail
Gu such as Fig. 1, shown in 2.
2) paper 3 is at least observed daily with the method for range estimation after, checks that paper 3 has free from flaw generation, and split
Spread scenarios after seam generation.
3) by the observation of 30 days, as, without crackle is found, illustrated the not developing deeply of primary fracture 2, for routinely on paper 3
Surface crack, structure will not be damaged in itself, only need to slightly handle or not handle and can ensure reinforced concrete structure 1
Normal use；
4) as produced new crack 4 on paper 3, as shown in figure 3, explanation primary fracture 2 is also developing, then need further to enter
Mobile state is observed.
5) in Mobile state observation is entered, a paper 3 is at least still observed daily with the method for range estimation, checks paper 3
Whether new crack 4 width is extending, and passes through the observation of long-term 10 days；
5.1) such as directly find that fracture width is progressively extending by naked eyes can, it is a kind of destruction to illustrate this crack
Property structural cracks, need to ask professional team further to detect or reinforce；
5.2) it such as can not directly find that fracture width is progressively extending by naked eyes, at this moment need on this paper again
1 paper is pasted, a paper 3 is at least observed daily with the method directly estimated afterwards, passes through the observation of 32 days；A) such as paper 3
Upper no discovery crackle, it is also more stable to illustrate this crack, and only need to slightly handle can ensure structure normal use；b)
As produced new crack 4 on paper 3, show that the width of primary fracture 2 is continuing to extend, it is a kind of destructive knot to illustrate primary fracture 2
Structure crack, professional team need to be asked further to detect or reinforce.
Embodiment 3
A kind of sticker method for identifying concrete structure crack and whether persistently extending, such as Fig. 4 process chart institute
Show, comprise the following steps：
1) discovery (range estimation finds generation and the region in crack) of the surface primary fracture 2 of reinforced concrete structure 1, it is determined that splitting
The position that paper 3 is pasted in face is sewed on, then carries out pasting the cleaning of the basal plane of paper 3, and selects hardness moderate, it is pure white and nonelastic
Paper 3 apply glue, then the paper 3 for scribbling glue is pasted onto on the crack on the surface of reinforced concrete structure 1, and make paper
3 are more than the area in crack, are flattened paper 3 with flatiron or hair dryer, make paper 3 and the surface mount of reinforced concrete structure 1 jail
Gu such as Fig. 1, shown in 2.
2) paper 3 is at least observed daily with the method for range estimation after, checks that paper 3 has free from flaw generation, and split
Spread scenarios after seam generation.
3) by the observation of 35 days, as, without crackle is found, illustrated the not developing deeply of primary fracture 2, for routinely on paper 3
Surface crack, structure will not be damaged in itself, only need to slightly handle or not handle and can ensure reinforced concrete structure 1
Normal use；
4) as produced new crack 4 on paper 3, as shown in figure 3, explanation primary fracture 2 is also developing, then need further to enter
Mobile state is observed.
5) in Mobile state observation is entered, a paper 3 is at least still observed daily with the method for range estimation, checks paper 3
Whether new crack 4 width is extending, and passes through the observation of long-term 12 days；
5.1) such as directly find that fracture width is progressively extending by naked eyes can, it is a kind of destruction to illustrate this crack
Property structural cracks, need to ask professional team further to detect or reinforce；
5.2) it such as can not directly find that fracture width is progressively extending by naked eyes, at this moment need on this paper again
1 paper is pasted, a paper 3 is at least observed daily with the method directly estimated afterwards, passes through the observation of 31 days；A) such as paper 3
Upper no discovery crackle, it is also more stable to illustrate this crack, and only need to slightly handle can ensure structure normal use；b)
As produced new crack 4 on paper 3,1 paper 3 can be pasted again on this paper 3, it is daily with the method directly estimated afterwards
A paper 3 is at least observed, passes through the observation of 31 days；As, without crackle is found, it is also that comparison is steady to illustrate this crack on paper 3
Fixed, only need to slightly handle can ensure structure normal use；As produced new crack 4 on paper 3, show the width of primary fracture 2
Continuing to extend, it is a kind of destructive structure crack to illustrate primary fracture 2, and professional team need to be asked further to detect or reinforce.
Claims (5)
1. a kind of sticker method for identifying concrete structure crack and whether persistently extending, it is characterised in that including following step
Suddenly：
1) reinforced concrete structure (1) is observed by the naked eye, region and position caused by range estimation crack, determines primary fracture (2)
Region, primary fracture (2) region surface is cleaned, carry out the cleaning of paper (3) basal plane, and in primary fracture (2) region
Paper (3) in stickup；
2) paper (3) is at least observed daily with the method directly estimated after, checks that paper (3) has free from flaw production above
Spread scenarios after the generation of raw and crack；
3) by the observation of at least 28 days, as without crackle is found, illustrated primary fracture (2) not developing deeply on paper (3), being normal
The surface crack of rule property, will not damage in itself to structure, and only need to slightly handle or not handle can ensure armored concrete
Structure (1) normal use；
4) as produced new crack (4) on paper (3), illustrate that primary fracture (2) is also developing, then need further to enter Mobile state sight
Survey；
5) in Mobile state observation is entered, by the observation of at least 7 days,
5.1) such as directly find that fracture width is progressively extending by naked eyes can, it is a kind of destructive knot to illustrate this crack
Structure crack, professional team need to be asked further to detect or reinforce；
5.2) it such as can not directly find that fracture width is progressively extending by naked eyes, at this moment need to paste again on this paper
1 paper, a paper (3) is at least observed daily with the method directly estimated afterwards, passes through the observation of at least 28 days；A) such as paper
(3) without crackle is found on, it is also more stable to illustrate this crack, and only need to slightly handle can ensure that structure normally makes
With；B) as produced new crack (4) on paper (3), show that primary fracture (2) width is continuing to extend, illustrate that primary fracture (2) is
A kind of destructive structure crack, need to ask professional team further to detect or reinforce.
2. the sticker method whether identification concrete structure crack according to claim 1 persistently extends, its feature
It is：In step 1), after pasting paper (3), paper (3) is flattened with flatiron or hair dryer, makes paper (3) and reinforced concrete
Soil structure (1) surface mount is firm.
3. the sticker method whether identification concrete structure crack according to claim 1 persistently extends, its feature
It is：The paper (3) is pure white and inelastic paper (3).
4. the sticker method whether identification concrete structure crack according to claim 3 persistently extends, its feature
It is：The paper (3) is the moderate paper (3) of hardness.
5. according to claim 1-4 any one identification concrete structure crack whether the paster side persistently extended
Method, it is characterised in that：5.2) in b), as produced new crack (4) on paper (3), 1 can be pasted again above in this paper (3)
Paper (3), a paper (3) is at least observed daily with the method directly estimated afterwards, passes through the observation of 31 days；Such as paper (3)
Upper no discovery crackle, it is also more stable to illustrate this crack, and only need to slightly handle can ensure structure normal use；Such as
New crack (4) is produced on paper (3), shows that primary fracture (2) width is continuing to extend, it is a kind of broken to illustrate primary fracture (2)
Bad property structural cracks, need to ask professional team further to detect or reinforce.
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| CN201610063908.6A CN105675851B (en) | 2016-01-29 | 2016-01-29 | A kind of sticker method for identifying concrete structure crack and whether persistently extending |
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| CN108828199A (en) * | 2018-06-13 | 2018-11-16 | 陕西红柠铁路有限责任公司 | A method of concrete cracks are monitored using glass bar |
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| CN201122092Y (en) * | 2007-11-30 | 2008-09-24 | 容赞华 | Slit variation recording label |
| CN101968348A (en) * | 2010-09-07 | 2011-02-09 | 中国石油大学(北京) | Method for visually monitoring fracture crack |
| CN104463888A (en) * | 2014-12-19 | 2015-03-25 | 中国科学院武汉岩土力学研究所 | Crack width change monitoring device and method |
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2016
- 2016-01-29 CN CN201610063908.6A patent/CN105675851B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201122092Y (en) * | 2007-11-30 | 2008-09-24 | 容赞华 | Slit variation recording label |
| CN101968348A (en) * | 2010-09-07 | 2011-02-09 | 中国石油大学(北京) | Method for visually monitoring fracture crack |
| CN104463888A (en) * | 2014-12-19 | 2015-03-25 | 中国科学院武汉岩土力学研究所 | Crack width change monitoring device and method |
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| Title |
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| 某大楼地基不均匀沉降事故分析与处理;邓露明等;《岩土工程》;20040831;第24卷(第8期);参见第2节 * |
| 混凝土结构裂缝分析与处理;罗春生;《中华民居》;20110630(第6期);全文 * |
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