CN104807883A - Detection method of grouting compactness entity of wall - Google Patents
Detection method of grouting compactness entity of wall Download PDFInfo
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- CN104807883A CN104807883A CN201510174881.3A CN201510174881A CN104807883A CN 104807883 A CN104807883 A CN 104807883A CN 201510174881 A CN201510174881 A CN 201510174881A CN 104807883 A CN104807883 A CN 104807883A
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Abstract
The invention relates to a detection method of a grouting compactness entity of a wall. A sensor of an elastic wave receiver is attached to the to-be-detected wall, the to-be-detected wall is knocked, the sensor receives a reflected signal, the reflected signal is transmitted to the elastic wave receiver, signal data are recorded in an instrument, and the pipeline grouting compactness of the wall is obtained through wave spectral analysis. With the adoption of the method, defects that the wall is destructed due to coring detection and required to be repaired, the process is tedious and complex and the like in the prior art are overcome. Non-destruction, that is, the structure of the building wall is not destructed, is realized, the condition that a piece of wall grouted material is taken down from the wall and the compactness of the material is detected with naked eyes is avoided, so that the building wall is not destructed, the whole building structure meets the design standard, and quantitative detection can be realized.
Description
Technical field
Originally divert from one use to another invention and relate to a kind of detection method, particularly a kind of wall grouting, the detection method of packing entity.
Technical background
Before the present invention makes, wall grouting material entity detection adopts usually gets this method of core to verify the compaction rate of grouting material.So-called core detection, exactly on shaping building masonry wall by the method drilled through, take off one piece of body of wall, with the naked eye go to check that whether the wall grouting material taken off closely knit.The compaction rate although this method can visually see, but it causes the destruction of body of wall, indelible hidden danger is played to the weakening of fabric structure, body of wall after breakage, later stage needs again to repair, process very complicated, simultaneously, quantitative words naked eyes detect by an unaided eye merely or have circumscribed, because if cannot specifically be determined and weigh.
Summary of the invention
Object of the present invention is just to overcome above-mentioned defect, develops a kind of detection method of wall grouting material packing entity.
Technical scheme of the present invention is:
A detection method for wall grouting packing entity, its technical characteristics is that step is as follows:
(1) sensor of elastic wave receiver is sticked on detected body of wall;
(2) knocking to detected body of wall;
(3) sensor receives reflected signal;
(4) reflected signal is transported to elastic wave receiver, and is recorded in instrument by signal data;
(5) analyzed by wave spectrum, draw the duct grouting packing of this body of wall.
Described detected body of wall is grouting wall.
In described step (1), sensor to be placed on around impacting point within the scope of 5cm.
In described step (5), elastic wave data are collected to elastic wave receiver and carry out frequency spectrum dissection process, and convert color contour to.
Advantage of the present invention and effect are not destroy building wall body structure, namely can't harm, not be used in and body of wall takes off one block of wall grouting material with the naked eye detect packing, this ensure that not being destroyed of building masonry wall, make whole fabric structure meet design standards, and quantitative detection can be accomplished.
Accompanying drawing explanation
Fig. 1---Grouted density of the present invention detects schematic diagram, and wherein A is testing profile figure, B is test planimetric map.In figure, star represents: impacting point; Circular expression: sensor; Arrow represents: line direction.
Fig. 2---elastic wave reflex schematic diagram of the present invention, wherein C is the closely knit elastic wave reflex schematic diagram of grouting, and D is grouting defectiveness elastic wave reflex schematic diagram, and E is the elastic wave reflex schematic diagram that is not in the milk.
Fig. 3---the present invention scans isoline schematic diagram.
Specific implementation method
Technical thought of the present invention is:
The know-why that the present invention is applied to carries out elastic wave scanning along the grouting top in duct or side, with the form follow-on test scanned (exciting and trusted), judged the closely knit situation of being in the milk in duct by the characteristic of reflected signal.According in the presence or absence of corrugated tube position, duct reflected signal and the length of reflection interval, the presence or absence of the defect that can judge to be in the milk in duct.
Concrete steps are as follows:
(1) along the side of pipeline, with the form follow-on test scanned (exciting and trusted), by the situation of being in the milk in the characteristic test pipeline of reflected signal.
(2) according to design drawing, shear wall draws the center line in Bellows Length direction.
(3) along center line, equidistantly (1-5mm) marks scale, as measuring point from bottom to top.Measuring point, along corrugated tube direction, is arranged on shear wall.
(4) knock from bottom to top along measuring point with exciting hammer, exciting hammer can be iron hammer or rubber mallet, and when knocking, dynamics is moderate, and the dynamics of knocking of each measuring point is even; When knocking, sensor is placed on side and carries out collection signal at every turn.
(5) analyzing and processing is carried out to the reflection wave signal gathered, thus judge position and the size of the defect that grouting is empty.
1, impacting point: carry out the point knocked in shear wall corrugated tube side with exciting hammer, position is equidistantly arranged along Bellows Length direction.When each exciting, sensor to be placed on around impacting point within the scope of 5cm.
2, existing detection method:
(1) Electromagnetic Wave Method: by metallic shield, is not suitable for metallic bellows;
(2) supersonic testing method: need from two sides to survey, workability is poor, and efficiency is low;
(3) radiation technique: have radioactivity, equipment is complicated and cost is higher.
Impact echo for detecting medium with impact elasticity ripple, can carry out defect location fast, improve testing efficiency and precision.
3, the type of harmless detection method grasp defect, scale and size is passed through, so that control defect in time and process.
Illustrate the present invention below.
As shown in Figure 1:
Body of wall duct grouting, treats that grouting material setting and harden intensity at least reaches 75% of design strength.The sensor of elastic wave receiver is sticked on detected body of wall, by making it to produce elastic wave to knocking of body of wall outside grout lines, sensor is delivered to elastic wave receiver after receiving this signal, and signal data is recorded in instrument, by the spectral analysis of instrument elastic wave, draw the duct grouting packing of this body of wall.
As shown in Figure 2,3:
When be in the milk existing defects time, the elastic wave of exciting can produce prior reflection at fault location, and simultaneously elastic wave is walked around defect reflection and returned also can produce delayed reflection, and the delayed reflection time used of elastic wave, equivalent velocity of wave seemed slower than the closely knit director of grouting.
Such as: shear wall's thickness 0.2m, concrete strength C30 is 3.8km/s through demarcating elastic wave velocity of propagation in this concrete.Impact echo is adopted to test, be in the milk closely knit region, reflection interval should about 0.2*2/3.8=0.108 millisecond, and in the defective region of grouting, because of diffraction and prior reflection, be obviously greater than the reflection interval that sensor collects and be less than 0.108 millisecond.In Fig. 3 color comparatively deep divide namely reflection interval region.
Elastic wave data are collected by detecting instrument elastic wave receiver, frequency spectrum dissection process is carried out to the data gathered, and convert color contour to, in isogram, ordinate represents test height, horizontal ordinate represents reflection interval, black vertical line represents bottom reflection position, shear wall's thickness direction, and box indicating those suspected defects region, shade represents the power of reflected signal.Isogram shows, and along short transverse, has everywhere significantly prior reflection and delayed reflex, these position existing defects are described, basically identical with the defective locations pre-set.Model test shows, Impact echo checks the closely knit situation of grouting of slurry anchor node and defective locations to be feasible in this engineering.
Whole process do not have completely conventional grout material usual damage detection, to body of wall agent structure without any destruction.Without the need to again because getting core, body of wall being produced damaged, eliminating the loaded down with trivial details technique that the later stage makes up breakage.
The present invention enormously simplify testing process under guarantee testing result accurately situation, is highly suitable for building now grouting material packing Site Detection.
Claims (4)
1. a lossless detection method for wall grouting packing entity, is characterized in that step is as follows:
(1) sensor of elastic wave receiver is sticked on detected body of wall;
(2) detected body of wall is knocked;
(3) sensor receives reflected signal;
(4) reflected signal is transported to elastic wave receiver, and is recorded in instrument by signal data;
(5) analyzed by wave spectrum, draw the duct grouting packing of this body of wall.
2. the detection method of a kind of wall grouting packing entity according to claim 1, is characterized in that described detected body of wall is grouting wall.
3. the detection method of a kind of wall grouting packing entity according to claim 1, to is characterized in that being placed on by sensor in described step (1) around impacting point within the scope of 5cm.
4. the detection method of a kind of wall grouting packing entity according to claim 1, is characterized in that collecting elastic wave data to elastic wave receiver in described step (5) carries out frequency spectrum dissection process, and converts color contour to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510174881.3A CN104807883A (en) | 2015-04-10 | 2015-04-10 | Detection method of grouting compactness entity of wall |
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| CN201510174881.3A CN104807883A (en) | 2015-04-10 | 2015-04-10 | Detection method of grouting compactness entity of wall |
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| CN201510174881.3A Pending CN104807883A (en) | 2015-04-10 | 2015-04-10 | Detection method of grouting compactness entity of wall |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153727A (en) * | 2016-08-19 | 2016-11-23 | 中建七局(上海)有限公司 | A kind of building grouting plumpness detection device and detection method |
| CN106596298A (en) * | 2015-11-10 | 2017-04-26 | 安徽建筑大学 | Sleeve grouting compactness detection device and detection method |
| CN106645407A (en) * | 2016-12-21 | 2017-05-10 | 安徽省建筑工程质量监督检测站 | Detection method of grouting compactness for assembly-type shear wall pipeline |
| CN107167520A (en) * | 2017-05-20 | 2017-09-15 | 浙江交科工程检测有限公司 | Grouting compactness detection method |
| CN107179351A (en) * | 2017-06-06 | 2017-09-19 | 四川升拓检测技术股份有限公司 | A kind of prestressed pore passage grouting compactness method of testing |
| CN107741381A (en) * | 2017-09-28 | 2018-02-27 | 江苏省建筑科学研究院有限公司 | Apparatus and method for detecting slurry anchor overlap joint connecting node Grouted density |
| CN108693250A (en) * | 2018-05-14 | 2018-10-23 | 贵州省建材产品质量监督检验院 | A kind of method of impact echo detection wallboard splicing seams quality |
| CN108872379A (en) * | 2018-05-14 | 2018-11-23 | 贵州省建材产品质量监督检验院 | A kind of method of ultrasound examination wallboard splicing seams quality |
| CN111189926A (en) * | 2020-01-08 | 2020-05-22 | 中南大学 | Method and system for identifying structure hole position based on global search |
| CN111257421A (en) * | 2020-02-21 | 2020-06-09 | 河南科技大学 | Visual imaging system for composite material knocking detection result |
| CN112229915A (en) * | 2020-12-11 | 2021-01-15 | 四川升拓检测技术股份有限公司 | Device and method for measuring grouting compactness of prestressed duct |
| CN113899819A (en) * | 2021-10-29 | 2022-01-07 | 福建工程学院 | Device, system and method for measuring grouting compactness of prestressed duct |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596298A (en) * | 2015-11-10 | 2017-04-26 | 安徽建筑大学 | Sleeve grouting compactness detection device and detection method |
| CN106153727A (en) * | 2016-08-19 | 2016-11-23 | 中建七局(上海)有限公司 | A kind of building grouting plumpness detection device and detection method |
| CN106645407A (en) * | 2016-12-21 | 2017-05-10 | 安徽省建筑工程质量监督检测站 | Detection method of grouting compactness for assembly-type shear wall pipeline |
| CN107167520B (en) * | 2017-05-20 | 2020-10-09 | 浙江交科工程检测有限公司 | Grouting compactness detection method |
| CN107167520A (en) * | 2017-05-20 | 2017-09-15 | 浙江交科工程检测有限公司 | Grouting compactness detection method |
| CN107179351A (en) * | 2017-06-06 | 2017-09-19 | 四川升拓检测技术股份有限公司 | A kind of prestressed pore passage grouting compactness method of testing |
| CN107741381A (en) * | 2017-09-28 | 2018-02-27 | 江苏省建筑科学研究院有限公司 | Apparatus and method for detecting slurry anchor overlap joint connecting node Grouted density |
| CN107741381B (en) * | 2017-09-28 | 2023-10-27 | 江苏省建筑科学研究院有限公司 | Device and method for detecting grouting compactness of slurry anchor lap joint connection node |
| CN108693250A (en) * | 2018-05-14 | 2018-10-23 | 贵州省建材产品质量监督检验院 | A kind of method of impact echo detection wallboard splicing seams quality |
| CN108872379A (en) * | 2018-05-14 | 2018-11-23 | 贵州省建材产品质量监督检验院 | A kind of method of ultrasound examination wallboard splicing seams quality |
| CN111189926A (en) * | 2020-01-08 | 2020-05-22 | 中南大学 | Method and system for identifying structure hole position based on global search |
| WO2021139006A1 (en) * | 2020-01-08 | 2021-07-15 | 中南大学 | Method and system for identifying position of structural cavity on basis of global search |
| CN111257421A (en) * | 2020-02-21 | 2020-06-09 | 河南科技大学 | Visual imaging system for composite material knocking detection result |
| CN112229915A (en) * | 2020-12-11 | 2021-01-15 | 四川升拓检测技术股份有限公司 | Device and method for measuring grouting compactness of prestressed duct |
| CN112229915B (en) * | 2020-12-11 | 2021-03-09 | 四川升拓检测技术股份有限公司 | Device and method for measuring grouting compactness of prestressed duct |
| CN113899819A (en) * | 2021-10-29 | 2022-01-07 | 福建工程学院 | Device, system and method for measuring grouting compactness of prestressed duct |
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Application publication date: 20150729 |