JP4155976B2 - Deterioration diagnosis method for concrete structures - Google Patents
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- 239000004567 concrete Substances 0.000 title claims description 86
- 230000006866 deterioration Effects 0.000 title claims description 33
- 238000000034 method Methods 0.000 title claims description 23
- 238000003745 diagnosis Methods 0.000 title claims description 17
- 239000004570 mortar (masonry) Substances 0.000 claims description 35
- 239000002131 composite material Substances 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 7
- 238000006731 degradation reaction Methods 0.000 claims description 7
- 238000012937 correction Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 3
- 239000003550 marker Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000002405 diagnostic procedure Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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Description
本発明は、コンクリート構造物の劣化診断方法に関するものである。 The present invention relates to a method for diagnosing deterioration of a concrete structure.
モルタルコンクリート法面の劣化診断は、作業者が急峻なモルタルコンクリート法面に昇って、目視や打撃により劣化箇所や劣化状態を確認し、その位置を特定しながら図面に記入し、欠陥個所を表示した図面を作成していた。しかしながら、道路脇の急峻なモルタルコンクリート法面に昇って作業するため、危険な作業であり、その安全対策を十分に確保する必要がある上、極めて作業性が悪く、その診断コストが高くなり、また作業期間が長期化する問題があった。 Deterioration diagnosis of the mortar concrete slope is done by the operator climbing the steep mortar concrete slope, checking the degradation part and degradation state by visual inspection and hammering, filling in the drawing while identifying the position, and displaying the defective part Had created a drawing. However, because the work climbs to the steep mortar concrete slope beside the road, it is a dangerous work, and it is necessary to ensure its safety measures sufficiently, the workability is extremely poor, and the diagnostic cost becomes high, In addition, there was a problem that the working period was prolonged.
このため、近年はモルタルコンクリート法面や橋梁地覆、ビルの外壁などを赤外線カメラで撮影し、放射温度データが周辺の温度より高いことや、低温度時に撮影した画像と、高温度時に撮影した画像との差から得られる高温度差の部分に、コンクリート表面やモルタル表面に浮きや剥離が存在し、また背面に空洞があることを推定して劣化診断する方法が行なわれている（特許文献１、特許文献２）。 For this reason, in recent years, mortar concrete slopes, bridge covers, building outer walls, etc. were photographed with an infrared camera, and the radiation temperature data was higher than the surrounding temperature, images taken at low temperatures, and images taken at high temperatures. There is a method of diagnosing deterioration by estimating that there is floating or peeling on the concrete surface or mortar surface in the high temperature difference part obtained from the difference from the image, and there is a cavity on the back (Patent Document) 1, Patent Document 2).
しかしながらモルタル吹き付けの法面や橋梁地覆は、表面に凹凸や隅角部などがある三次元の立体であり、特に凸部は温度上昇が大きく、また凹部は温度上昇が低いため、この表面形状を正しく評価しないと、表面の浮きや剥離、また背面の空洞化の部分を判断できず正確な診断が行なえない問題があった
本発明は上記問題を改善し、三次元写真画像と赤外線温度差画像とを合成することにより、劣化部分を判定して、その位置や大きさを正確に表示した正面図と断面図を容易に作成することができるコンクリート構造物の劣化診断方法を提供するものである。 The present invention improves the above problems, and by combining a three-dimensional photographic image and an infrared temperature difference image, it is possible to determine a deteriorated portion and easily display a front view and a cross-sectional view that accurately display the position and size. The present invention provides a method for diagnosing deterioration of a concrete structure that can be created.
本発明の請求項１記載のコンクリート構造物の劣化診断方法は、（１）少なくとも異なる２地点以上から、被検査面となる基準点を設けたコンクリート構造物の表面をデジタルカメラで撮影し、このデジタル写真画像から三次元写真画像を作成する三次元写真画像作成手段と、（２）前記撮影地点からコンクリート構造物の表面を赤外線カメラで撮影し、これを異なる時間に複数回繰り返して撮影し、この赤外線画像から複数枚の三次元赤外線画像を作成する三次元赤外線画像作成手段と、（３）異なる時間で撮影した複数枚の三次元赤外線画像を、その低い温度状態で撮影した画像と、高い温度状態で撮影した画像と比較して、その温度差に対応する色に表示した赤外線温度差画像を作成する赤外線温度差画像作成手段と、
（４）この赤外線温度差画像と前記三次元写真画像とを合成する合成三次元写真画像作成手段と、（５）この合成三次元写真画像からコンクリート表面の温度差データを用いて劣化部分を表示する劣化診断手段と、（６）補正した合成三次元写真画像から劣化部分を表示した正面図および断面図を作成する設計図作成手段と、からなることを特徴とするものである。
The deterioration diagnosis method for a concrete structure according to claim 1 of the present invention includes (1) photographing a surface of a concrete structure provided with a reference point serving as a surface to be inspected from at least two different points with a digital camera. 3D photographic image creation means for creating a 3D photographic image from a digital photographic image; (2) The surface of the concrete structure is photographed with an infrared camera from the photographing point, and this is repeated several times at different times; A three-dimensional infrared image creation means for creating a plurality of three-dimensional infrared images from the infrared image; and (3) an image obtained by photographing a plurality of three-dimensional infrared images taken at different times in the low temperature state, and a high Infrared temperature difference image creating means for creating an infrared temperature difference image displayed in a color corresponding to the temperature difference compared to an image taken in a temperature state;
(4) a synthetic three-dimensional photographic image creating means for synthesizing the infrared temperature difference image and the three-dimensional photographic image; and (5) displaying a deteriorated portion from the synthetic three-dimensional photographic image using temperature difference data on the concrete surface. And (6) a design drawing creation means for creating a front view and a cross-sectional view in which a deteriorated portion is displayed from the corrected composite three-dimensional photographic image.
本発明の請求項２記載のコンクリート構造物の劣化診断方法は、被検査面となるコンクリート構造物の表面を縦または横方向に複数に分割し、この分割された境界を基準点として、デジタルカメラまたは赤外線カメラで撮影し、分割された画像を縦または横方向に組み合わせることを特徴とするものである。 According to a second aspect of the present invention, there is provided a method for diagnosing deterioration of a concrete structure, wherein the surface of the concrete structure to be inspected is divided into a plurality of parts in the vertical or horizontal direction, and the divided boundary is used as a reference point. Alternatively, the image is captured by an infrared camera, and the divided images are combined in the vertical or horizontal direction.
本発明の請求項３記載のコンクリート構造物の劣化診断方法は、被検査面となるコンクリート構造物の基準点に標識を設置して、ここから所定の間隔で標識を設置してデジタルカメラと赤外線カメラで撮影することを特徴とするものである。 According to a third aspect of the present invention, there is provided a method for diagnosing deterioration of a concrete structure in which a sign is placed at a reference point of the concrete structure to be inspected, and a sign is placed at a predetermined interval from the digital camera and an infrared ray. It is characterized by shooting with a camera.
本発明の請求項４記載のコンクリート構造物の劣化診断方法は、請求項１のコンクリート構造物の劣化診断方法において、更にレーザー距離計で撮影地点から被検査面となるコンクリート構造物の表面までの距離を測定し、この距離データを劣化診断手段の補正データとして使用することを特徴とするものである。 The deterioration diagnosis method for a concrete structure according to claim 4 of the present invention is the deterioration diagnosis method for a concrete structure according to claim 1, wherein the distance from the photographing point to the surface of the concrete structure to be inspected with a laser rangefinder is further measured. The distance is measured, and this distance data is used as correction data for the deterioration diagnosis means.
本発明の請求項５記載のコンクリート構造物の劣化診断方法は、被検査面となるコンクリート構造物が、モルタルコンクリート法面、トンネルのコンクリート内壁、コンクリート橋梁またはビルのコンクリート外壁やタイル張り外壁であることを特徴とするものである。 In the method for diagnosing deterioration of a concrete structure according to claim 5 of the present invention, the concrete structure to be inspected is a mortar concrete slope, a concrete inner wall of a tunnel, a concrete bridge, a concrete outer wall of a building, or a tiled outer wall. It is characterized by this.
請求項１のコンクリート構造物の劣化診断方法によれば、少なくとも異なる２地点以上から撮影したデジタル写真画像から三次元写真画像を作成し、前記撮影地点からコンクリート構造物の表面を赤外線カメラで撮影し、これを異なる時間に複数回繰り返して撮影し、異なる時間で撮影した複数枚の三次元赤外線画像の低い温度状態と、高い温度状態で撮影した画像と比較して、その温度差に対応する色に表示した三次元の赤外線温度差画像を作成し、前記三次元写真画像と三次元の赤外線温度差画像とを合成して、これから劣化部分を判定し、この劣化部分の位置や大きさ、深さなどを正確に表示した正面図と断面図を作成することにより、劣化部分を正確に判定して、補修用の対策を取ることができる。
つまり三次元写真画像により被検査面となるコンクリート構造物を三次元の立体的なデータとして表示すると共に、これに三次元の赤外線温度差画像を三次元の立体的なデータとして組合せて表示することにより、任意の断面における、劣化部分の形状や深さ正確に表示した断面図を作成することができる。この劣化部分の深さを正確に表示した断面図により、劣化部分の状態を正確に判定できると共に、必要となる補修用の対策を取ることができる。
According to the degradation diagnostic method of the concrete structure of the 請 Motomeko 1, at least different three-dimensional image from a digital photograph images taken from two points or more to create a shooting the surface of the concrete structure with an infrared camera from the shooting point This is repeated several times at different times, and the temperature difference is compared with the images taken at low and high temperatures of multiple 3D infrared images taken at different times. Create a three-dimensional infrared temperature difference image displayed in color, synthesize the three-dimensional photographic image and the three-dimensional infrared temperature difference image, determine the deteriorated portion from this, the position and size of this deteriorated portion, By creating a front view and a cross-sectional view that accurately display the depth and the like, it is possible to accurately determine the deteriorated portion and take a repair measure.
In other words, the concrete structure that will be the surface to be inspected is displayed as three-dimensional three-dimensional data using a three-dimensional photographic image, and a three-dimensional infrared temperature difference image is displayed in combination with this as three-dimensional three-dimensional data. Thus, it is possible to create a sectional view accurately displaying the shape and depth of the deteriorated portion in an arbitrary section. The sectional view accurately displaying the depth of the deteriorated portion can accurately determine the state of the deteriorated portion and take necessary repair measures.
また請求項２記載のコンクリート構造物の劣化診断方法によれば、被検査面となるコンクリート構造物の表面を縦または横方向に複数に分割し、この分割された境界を基準点として、デジタルカメラまたは赤外線カメラで撮影し、分割された画像を縦または横方向に組み合わせて、劣化部分のより正確な正面図と断面図を作成することができる。 According to the method for diagnosing deterioration of a concrete structure according to claim 2, the surface of the concrete structure to be inspected is divided into a plurality of parts in the vertical or horizontal direction, and the divided boundary is used as a reference point. Alternatively, a more accurate front view and cross-sectional view of the deteriorated portion can be created by shooting with an infrared camera and combining the divided images in the vertical or horizontal direction.
また請求項３記載のコンクリート構造物の劣化診断方法によれば、被検査面となるコンクリート構造物の基準点に標識を設置し、ここから所定の間隔で標識を設置してデジタルカメラと赤外線カメラで撮影することにより正確な画像合成と距離測定を行なうことができる。 Further, according to the method for diagnosing deterioration of a concrete structure according to claim 3, a sign is placed at a reference point of the concrete structure to be a surface to be inspected, and the sign is placed at a predetermined interval from the digital camera and the infrared camera. By photographing with, accurate image composition and distance measurement can be performed.
また請求項４記載のコンクリート構造物の劣化診断方法によれば、レーザー距離計で撮影地点から被検査面となるコンクリート構造物の表面までの距離を測定し、この距離データを基に、赤外線カメラの最小検知寸法やデジタルカメラの分解能を補正データとして使用することにより精度良く劣化診断を行なうことができる。 According to the method for diagnosing deterioration of a concrete structure according to claim 4, the distance from the photographing point to the surface of the concrete structure as the surface to be inspected is measured with a laser distance meter, and the infrared camera is based on the distance data. By using the minimum detection dimension and the resolution of the digital camera as correction data, it is possible to perform deterioration diagnosis with high accuracy.
また請求項５記載のコンクリート構造物の劣化診断方法によれば、被検査面となるコンクリート構造物が、モルタルコンクリート法面、トンネルのコンクリート内壁、コンクリート橋梁またはビルのコンクリート外壁やタイル張り外壁など種々の劣化診断に適用することができる。 According to the method for diagnosing deterioration of a concrete structure according to claim 5, there are various concrete structures to be inspected, such as a mortar concrete slope, a concrete inner wall of a tunnel, a concrete bridge or a concrete outer wall of a building, and a tiled outer wall. It can be applied to the deterioration diagnosis.
以下、モルタルコンクリート吹付け法面に適用した場合の、本発明の実施の一形態を図１ないし図１１を参照して詳細に説明する。図１は本発明の工程を示すもので、図２は道路脇の斜面にモルタル吹付けしたコンクリート法面１の劣化診断する箇所である。このモルタルコンクリート法面１の道路側に基準点２を決め、ここに標識３を設け、ここから道路４に沿って所定の間隔で複数個の標識３を設置しておく。この標識３は、例えばアルミニウム箔の中央に黒いマークを付したものを用いる。 Hereinafter, an embodiment of the present invention when applied to a mortar concrete spray slope will be described in detail with reference to FIGS. FIG. 1 shows the process of the present invention, and FIG. 2 is a location for diagnosing deterioration of a concrete slope 1 sprayed with mortar on a roadside slope. A reference point 2 is determined on the road side of the mortar concrete slope 1, a sign 3 is provided here, and a plurality of signs 3 are installed along the road 4 at predetermined intervals. As the marker 3, for example, an aluminum foil with a black mark in the center is used.
次に、早朝の気温の最も低い時間に図３に示すように被検査面となるモルタルコンクリート法面１の全体が見渡せるＡ地点に移動し、ここにデジタルカメラ６をセットして、図２に示すようにモルタルコンクリート法面１を撮影する。また同時にレーザー距離計８で、各標識３までの距離を測定しておく。また赤外線カメラ７でモルタルコンクリート法面１を撮影して、この表面からの放射熱による熱分布状態を記録する。 Next, as shown in FIG. 3, the mortar concrete slope 1 as a surface to be inspected is moved to the point A where the entire surface can be seen as shown in FIG. 3, and the digital camera 6 is set here. Photograph the mortar concrete slope 1 as shown. At the same time, the distance to each marker 3 is measured with a laser distance meter 8. Further, the mortar concrete slope 1 is photographed by the infrared camera 7 and the heat distribution state due to the radiant heat from the surface is recorded.
次にＢ地点に移動し、ここにデジタルカメラ６をセットして、モルタルコンクリート法面１を撮影する。またレーザー距離計８で、各標識３までの距離を測定しておく。また赤外線カメラ７でモルタルコンクリート法面１を撮影して、この表面からの放射熱による熱分布状態を記録する。この気温の低い時間に赤外線カメラ７で撮影した赤外線画像は図５に示すようにモルタルコンクリート法面１の全体がクロス斜線で示した青色に表示される。 Next, it moves to B point, the digital camera 6 is set here, and the mortar concrete slope 1 is image | photographed. Further, the distance to each marker 3 is measured with a laser distance meter 8. Further, the mortar concrete slope 1 is photographed by the infrared camera 7 and the heat distribution state due to the radiant heat from the surface is recorded. As shown in FIG. 5, the infrared image taken by the infrared camera 7 at the time when the temperature is low is displayed in blue in which the entire mortar concrete slope 1 is indicated by cross diagonal lines.
例えば最初に、午前６時にＡ地点で赤外線カメラ７で撮影したとすると、この後、直ちにＢ地点に移動し、ここで赤外線カメラ７で撮影する。以下２時間ごとにＡ地点とＢ地点で赤外線カメラ７をセットして、モルタルコンクリート法面１を撮影し、午後２時まで５回繰り返して撮影する。 For example, if the image is first shot with the infrared camera 7 at point A at 6 am, then the camera immediately moves to point B, where it is shot with the infrared camera 7. After that, the infrared camera 7 is set at the points A and B every 2 hours, and the mortar concrete slope 1 is photographed, and is photographed five times until 2 pm.
この後、Ａ地点とＢ地点でデジタルカメラ６で撮影したデジタル写真画像をコンピュータの三次元写真画像作成手段で三次元解析して、図４に示すように三次元写真画像１０を作成する。また同様に、Ａ地点とＢ地点で赤外線カメラ７で撮影した赤外線画像をコンピュータの三次元赤外線画像作成手段で画像処理して三次元赤外線画像１１を作成する。 After that, the digital photographic images taken by the digital camera 6 at the points A and B are three-dimensionally analyzed by the three-dimensional photographic image creating means of the computer to create a three-dimensional photographic image 10 as shown in FIG. Similarly, a three-dimensional infrared image 11 is created by image processing of infrared images taken by the infrared camera 7 at points A and B by means of a three-dimensional infrared image creation means of a computer.
この後、図５に示すように全体が青い、気温の低い午前６時に撮影した三次元赤外線画像１１と、その後、２時間毎に撮影した三次元赤外線画像１１とのモルタルコンクリート法面部分の画像データを赤外線温度差画像作成手段で比較し、その温度差が最も大きい場合の、その温度差に対応する色に着色した赤外線温度差画像１２を作成する。 After that, as shown in FIG. 5, the image of the mortar concrete slope part is composed of a three-dimensional infrared image 11 taken at 6:00 am, which is entirely blue and the temperature is low, and a three-dimensional infrared image 11 taken every two hours thereafter. The data is compared by the infrared temperature difference image creating means, and an infrared temperature difference image 12 colored in a color corresponding to the temperature difference when the temperature difference is the largest is created.
例えば午前６時が最も気温が低く、午後２時の気温が高かったとすると、午後２時に赤外線カメラ７で撮影した三次元赤外線画像１１はモルタルコンクリート法面１の全体が図６に黒丸で示すように赤くなる。赤外線温度差画像作成手段で、この最も気温が低い午前６時の三次元赤外線画像１１と、最も気温が高い午後２時の三次元赤外線画像１１と、その画像データを比較し、その温度差を求めて、その温度差に対応する色に着色した図７に示す赤外線温度差画像１２を作成する。 For example, if the temperature is the lowest at 6:00 am and the temperature at 2:00 pm is high, the three-dimensional infrared image 11 taken by the infrared camera 7 at 2:00 pm shows the entire mortar concrete slope 1 as a black circle in FIG. It turns red. The infrared temperature difference image creation means compares the image data of the three-dimensional infrared image 11 at 6 am with the lowest temperature and the three-dimensional infrared image 11 at 2 pm with the highest temperature, and calculates the temperature difference. The infrared temperature difference image 12 shown in FIG. 7 that is obtained and colored in a color corresponding to the temperature difference is created.
次にこのようにして得られた赤外線温度差画像１２と三次元写真画像１０とを、基準点２を合わせて合成三次元写真画像作成手段で合成すると、図８に示すような合成三次元写真画像１３が形成される。 Next, when the infrared temperature difference image 12 and the three-dimensional photographic image 10 obtained in this way are combined by the combined three-dimensional photographic image creating means with the reference point 2 aligned, a combined three-dimensional photograph as shown in FIG. An image 13 is formed.
次に劣化診断手段で、この合成三次元写真画像１３から、レーザー距離計８で測定した被検査面までの距離データを勘案して、赤外線温度差画像部分からコンクリート表面の温度差データを用いて、モルタルコンクリート法面１の正常な凹凸部、つまり温度の高い凸部の黄色の部分を除去し、剥離や、空洞、クラックなどを判定する。このように正常な部分の温度上昇は温度差データから劣化と判断せず、異常な温度上昇部分は劣化と判断して、その劣化状況に対応した着色部分を残して、図９に示す補正した合成三次元写真画像１４を作成する。 Next, the deterioration diagnosis means takes into consideration the distance data from the composite three-dimensional photographic image 13 to the surface to be inspected measured by the laser distance meter 8, and uses the temperature difference data on the concrete surface from the infrared temperature difference image portion. The normal uneven part of the mortar concrete slope 1, that is, the yellow part of the convex part having a high temperature is removed, and peeling, cavities, cracks and the like are determined. In this way, the temperature rise in the normal part is not judged as degradation from the temperature difference data, the abnormal temperature rise part is judged as degradation, and the correction shown in FIG. 9 is made while leaving the colored part corresponding to the degradation state. A composite three-dimensional photographic image 14 is created.
この場合、レーザー距離計８で測定した被検査面までの距離データは、カメラの最小検知寸法や分解能を考慮して、その範囲の大きさを判定するデーターとなる。つまり画像上で、同じ長さの欠陥でも、距離によりその大きさが異なるので、距離データを勘案することにより正確な欠陥や劣化部分の大きさや範囲を判定することができる。 In this case, the distance data to the surface to be inspected measured by the laser distance meter 8 is data for determining the size of the range in consideration of the minimum detection size and resolution of the camera. That is, even if the defect has the same length on the image, the size differs depending on the distance. Therefore, the exact size and range of the defect or the deteriorated portion can be determined by considering the distance data.
次に補正した合成三次元写真画像１４からＣＡＤなどの設計図作成手段で、測量計算、面積計算を行ない、劣化個所だけを表示した図１０に示す正面図１５と、図１１に示す断面図１６を作成する。このように作成された正面図１５と断面図１６から、劣化個所の位置と、その内部の状況を確認して、補修対策を採ることができる。例えば図１０において、クロス斜線部分はモルタルの表面の浮きや剥離部分１８、黒丸部分はモルタルの密着不良で裏面に空洞がある部分１９、点部分はモルタルの剥落部分２０である。 Next, the front view 15 shown in FIG. 10 and the cross-sectional view 16 shown in FIG. Create From the front view 15 and the cross-sectional view 16 created in this way, the position of the deteriorated part and the internal situation can be confirmed, and repair measures can be taken. For example, in FIG. 10, the cross hatched portion is a mortar surface floating or peeling portion 18, the black circle portion is a mortar adhesion defect 19 having a cavity on the back surface, and the dot portion is a mortar peeling portion 20.
また上記説明では被検査面となるモルタルコンクリート法面１をＡ地点とＢ地点の２か所から撮影して、２枚の写真を合成する場合について説明したが、モルタルコンクリート法面１を道路４に沿って複数に分割し、この分割された境界を２地点として、デジタルカメラ６または赤外線カメラ７で撮影し、分割された画像を横方向に組み合わせることにより更に精度を向上させることができる。また縦方向または、縦および横方向に格子状に分割してから組み合わせても良い。また撮影地点は２地点に限らず３地点以上でも良い。 In the above description, the case where the mortar concrete slope 1 as the surface to be inspected is photographed from two places, point A and point B, and two photographs are combined, the mortar concrete slope 1 is road 4 Can be divided into a plurality of areas along the boundary, taken by the digital camera 6 or the infrared camera 7 with the divided boundaries as two points, and the divided images can be combined in the horizontal direction to further improve the accuracy. Further, they may be combined after being divided into a lattice shape in the vertical direction or in the vertical and horizontal directions. Also, the number of shooting points is not limited to two, but may be three or more.
なお上記説明ではモルタルコンクリート法面１の劣化診断に適用した場合について説明したが、トンネルのコンクリート内壁、コンクリート橋梁、ビルのコンクリート外壁やタイル張り外壁などのコンクリート構造物の劣化診断に広く適用することができる。 In the above explanation, the case of applying to the deterioration diagnosis of the mortar concrete slope 1 was explained, but it should be widely applied to the deterioration diagnosis of concrete structures such as tunnel concrete inner walls, concrete bridges, building concrete outer walls and tiled outer walls. Can do.
１ モルタルコンクリート法面
２ 基準点
３ 標識
４ 道路
６ デジタルカメラ
７ 赤外線カメラ
８ レーザー距離計
１０ 三次元写真画像
１１ 三次元赤外線画像
１２ 赤外線温度差画像
１３ 合成三次元写真画像
１４ 補正した合成三次元写真画像
１５ 正面図
１６ 断面図
１８ 浮きや剥離部分
１９ 密着不良で裏面に空洞がある部分
２０ 剥落部分
1 Mortar concrete slope
2 reference points
3 signs
4 roads
6 Digital camera
7 Infrared camera
8 Laser distance meter
10 3D photographic images
11 Three-dimensional infrared image
12 Infrared temperature difference image
13 Composite 3D photographic images
14 Corrected composite 3D photographic image
15 Front view
16 Cross section
18 Floating and peeling parts
19 The part where there is a cavity on the back due to poor adhesion
20 Stripped part
Claims (5)
（２）前記撮影地点からコンクリート構造物の表面を赤外線カメラで撮影し、これを異なる時間に複数回繰り返して撮影し、この赤外線画像から複数枚の三次元赤外線画像を作成する三次元赤外線画像作成手段と、
（３）異なる時間で撮影した複数枚の三次元赤外線画像を、その低い温度状態で撮影した画像と、高い温度状態で撮影した画像と比較して、その温度差に対応する色に表示した赤外線温度差画像を作成する赤外線温度差画像作成手段と、
（４）この赤外線温度差画像と前記三次元写真画像とを合成する合成三次元写真画像作成手段と、
（５）この合成三次元写真画像からコンクリート表面の温度差データを用いて劣化部分を表示する劣化診断手段と、
（６）補正した合成三次元写真画像から劣化部分を表示した正面図および断面図を作成する設計図作成手段と、
からなることを特徴とするコンクリート構造物の劣化診断方法。 (1) Three-dimensional photographic image creation means for photographing a surface of a concrete structure provided with a reference point serving as a surface to be inspected from at least two different points with a digital camera and creating a three-dimensional photographic image from the digital photographic image When,
(2) Three-dimensional infrared image creation, where the surface of a concrete structure is photographed with an infrared camera from the photographing point, and this is repeated several times at different times, and a plurality of three-dimensional infrared images are created from this infrared image. Means,
(3) An infrared image displayed in a color corresponding to the temperature difference between a plurality of three-dimensional infrared images taken at different times and an image taken at the low temperature state and an image taken at the high temperature state. An infrared temperature difference image creating means for creating a temperature difference image;
(4) a combined three-dimensional photographic image creating means for synthesizing the infrared temperature difference image and the three-dimensional photographic image;
(5) a deterioration diagnosis means for displaying a deteriorated portion from the composite three-dimensional photographic image using temperature difference data on the concrete surface;
(6) a design drawing creation means for creating a front view and a sectional view displaying a deteriorated portion from the corrected composite 3D photographic image;
A method for diagnosing deterioration of a concrete structure, comprising:
The deterioration of a concrete structure according to claim 1 or 4, wherein the concrete structure to be inspected is a mortar concrete slope, a concrete inner wall of a tunnel, a concrete bridge, a concrete outer wall of a building, or a tiled outer wall. Diagnosis method.
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