JP2005188101A - Burying method for prestressed concrete sheath and grout filling detector for prestressed concrete sheath - Google Patents
Burying method for prestressed concrete sheath and grout filling detector for prestressed concrete sheath Download PDFInfo
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- JP2005188101A JP2005188101A JP2003429517A JP2003429517A JP2005188101A JP 2005188101 A JP2005188101 A JP 2005188101A JP 2003429517 A JP2003429517 A JP 2003429517A JP 2003429517 A JP2003429517 A JP 2003429517A JP 2005188101 A JP2005188101 A JP 2005188101A
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- 239000011440 grout Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims description 11
- 239000011513 prestressed concrete Substances 0.000 title 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
この発明は、ＰＣ桁橋等のコンクリート構造物内へのＰＣシースの埋設に際して、そのＰＣシース内のグラウトの充填状況を確認することができるようにしたＰＣシースの埋設工法及びこれに用いるＰＣシース用のグラウト充填検知器に関する。 The present invention relates to a PC sheath embedding method capable of confirming the state of filling of grout in a PC sheath when embedding a PC sheath in a concrete structure such as a PC girder bridge, and a PC sheath used for the method. The present invention relates to a grout filling detector.
一般に、ＰＣ桁橋等の構築に際しては、コンクリート床版内にＰＣシースを埋設して、このＰＣシース内に挿通したＰＣ鋼材を緊張させることで、コンクリート床版にプレストレスを導入している。その後、ＰＣシース内には、ポルトランドセメント、水、混和剤等の混合物であるグラウトを充填して硬化させ、ＰＣ鋼材を腐食から守るようにしている。 In general, when a PC girder bridge or the like is constructed, prestress is introduced into the concrete floor slab by embedding a PC sheath in the concrete floor slab and tensioning the PC steel material inserted into the PC sheath. Thereafter, the PC sheath is filled with grout, which is a mixture of Portland cement, water, admixture and the like, and hardened to protect the PC steel from corrosion.
グラウトの充填に際しては、ＰＣシース内に隙間なく密に充填する必要がある。例えばＰＣシース内部にグラウト未充填部分が生じて空気が残留すると、この部分で結露が発生して、これがＰＣ鋼材の錆腐食の原因となり、ケーブル寿命が著しく損なわれたり、コンクリート床版自体の強度が低下するといった不具合が生じることになる。したがって、ＰＣシース内へのグラウト充填作業後に、ＰＣシース内におけるグラウトの充填状況を現場で確認できることが望ましい。 When filling the grout, it is necessary to fill the PC sheath tightly with no gap. For example, if a grout unfilled part is generated inside the PC sheath and air remains, condensation occurs in this part, which causes rust corrosion of the PC steel material, significantly reduces the cable life, and the strength of the concrete slab itself. Inconveniences such as lowering will occur. Therefore, it is desirable that the grout filling state in the PC sheath can be confirmed on site after the grout filling operation in the PC sheath.
従来においては、例えば特許文献１に開示されているように、ＰＣシースの一部を透明にして、コンクリート床版に形成した観察孔を通じてＰＣシースの透明部分を目視することで、ＰＣシース内におけるグラウトの充填状況を確認する方法が提案されている。 Conventionally, for example, as disclosed in Patent Document 1, a part of a PC sheath is made transparent, and a transparent portion of the PC sheath is visually observed through an observation hole formed in a concrete floor slab. A method for confirming the filling state of the grout has been proposed.
また、特許文献２に開示されているように、ＰＣシースにセンサを取り付けて、このセンサによってＰＣシース内のグラウトの充填状況を確認する方法も提案されている。 In addition, as disclosed in Patent Document 2, there is also proposed a method in which a sensor is attached to a PC sheath and the grout filling state in the PC sheath is confirmed by this sensor.
しかしながら、グラウトの充填状況を目視により確認する場合には、コンクリート床版に観察孔を形成する必要があり、ＰＣシース埋設時の作業性が悪くなることがあった。また、観察孔内に異物が侵入すると、グラウトの充填状況が確認し難くなるといった問題もあった。 However, when visually checking the grout filling state, it is necessary to form an observation hole in the concrete slab, and the workability at the time of embedding the PC sheath may be deteriorated. In addition, when foreign matter enters the observation hole, there is also a problem that it is difficult to confirm the grout filling state.
一方、ＰＣシースにセンサを直接取り付ける場合には、ＰＣシースに対して分岐管や開口といったセンサを取り付けるための加工を施す必要があって、既存のＰＣシースをそのまま使用することができず、面倒であった。 On the other hand, when the sensor is directly attached to the PC sheath, it is necessary to perform processing for attaching the sensor such as a branch pipe or an opening to the PC sheath, and the existing PC sheath cannot be used as it is. Met.
また、ＰＣシースに捻れや巻き癖等が生じていると、ＰＣシースの埋設時等において、ＰＣシースに取り付けたセンサの配置位置がずれ易く、グラウトの充填状況の検知に支障をきたす虞もあった。 In addition, if the PC sheath is twisted or wrinkled, the position of the sensor attached to the PC sheath is likely to shift when the PC sheath is embedded, which may hinder the detection of the grout filling status. It was.
この発明は、このような従来の欠点を解消して、ＰＣシース内のグラウトの充填状況を簡単且つ確実に検知することができるようにしたＰＣシースの埋設工法及びＰＣシース用のグラウト充填検知器の提供を目的とする。 The present invention eliminates the above-mentioned conventional drawbacks, and enables a PC sheath embedding method and a PC sheath grout filling detector to easily and reliably detect the grout filling state in the PC sheath. The purpose is to provide.
上記の課題を解決するため、この発明のＰＣシースの埋設工法は、ＰＣシース同士を管状センサ台を介して連結した状態で、コンクリート構造物内に埋設するとともに、これらＰＣシース及び管状センサ台の内部にＰＣ鋼材を挿通した後、グラウトを充填して、このグラウトの充填状況を前記管状センサ台に搭載してあるセンサによって検知するようにしたことを特徴とする。 In order to solve the above problems, the PC sheath embedding method according to the present invention embeds the PC sheaths in a concrete structure in a state where the PC sheaths are connected to each other via a tubular sensor base. After inserting the PC steel material into the inside, the grout is filled, and the filling state of the grout is detected by a sensor mounted on the tubular sensor base.
また、グラウト充填検知器は、ＰＣ鋼材が内包され且つ内部にグラウトが充填されるＰＣシースに連結されて、ＰＣシースと同様にＰＣ鋼材が内包され且つ内部にグラウトが充填される管状センサ台と、この管状センサ台に搭載されて管状センサ台内のグラウトの充填状況を検知するセンサとを備えたことを特徴とする。 The grout filling detector is connected to a PC sheath in which PC steel is contained and filled with grout, and a tubular sensor base in which PC steel is contained and grout is filled in the same manner as the PC sheath. And a sensor that is mounted on the tubular sensor base and detects a grout filling state in the tubular sensor base.
具体的には、前記管状センサ台の管壁に、前記センサを取り付ける開口部が設けられ、前記管壁の開口部周りに、径内方向へ突出する突起が形成されている。 Specifically, an opening for attaching the sensor is provided on the tube wall of the tubular sensor base, and a protrusion protruding in the radially inward direction is formed around the opening of the tube wall.
また、前記管状センサ台の管壁に、その一部を径外方向へ膨出してなる膨出部が設けられ、この膨出部に、前記センサが前記管壁の内周面よりも外側に位置するように収容されている。 In addition, a bulging portion formed by bulging a part of the tubular sensor base in the radially outward direction is provided on the tubular wall of the tubular sensor base, and the sensor is disposed outside the inner peripheral surface of the tubular wall. It is housed to be located.
この発明によれば、センサを搭載した管状センサ台を既存のＰＣシースに連結するだけで、従来のようにコンクリート床版に観察孔を形成したり、ＰＣシースに対してセンサを取り付けるための加工を施すことなく、グラウトの充填状況を簡単に検知することができる。 According to the present invention, a process for forming an observation hole in a concrete floor slab or attaching a sensor to a PC sheath as in the prior art simply by connecting a tubular sensor base equipped with a sensor to an existing PC sheath. It is possible to easily detect the grout filling state without performing the process.
また、管状センサ台にセンサを搭載しているので、捻れや巻き癖等が生じ易いＰＣシースにセンサを取り付けるときと比べて、センサ位置を安定させることができ、グラウトの充填状況を確実に検知することができる。 In addition, since the sensor is mounted on the tubular sensor base, the sensor position can be stabilized and the grout filling status can be detected more reliably than when the sensor is attached to a PC sheath that is prone to twisting or curling. can do.
さらに、センサを取り付ける開口部の周りに、径内方向へ突出する突起を形成することで、緊張したＰＣ鋼材が開口部に取り付けたセンサに接触し難くなり、センサの破損を防止して信頼性を向上することができる。 Furthermore, by forming a protrusion protruding in the radial direction around the opening to which the sensor is attached, it becomes difficult for the strained PC steel material to contact the sensor attached to the opening, preventing damage to the sensor and reliability. Can be improved.
さらにまた、管状センサ台の膨出部に、管壁の内周面よりも外側に位置するようにしてセンサを収容することでも、上記と同様に緊張したＰＣ鋼材がセンサに接触し難くなり、センサの破損を防止して信頼性を向上することができる。 Furthermore, even if the sensor is accommodated in the bulging portion of the tubular sensor base so as to be located outside the inner peripheral surface of the tube wall, the strained PC steel material is difficult to contact the sensor in the same manner as described above. The sensor can be prevented from being damaged and the reliability can be improved.
以下、この発明の実施形態を図面に基づいて詳細に説明する。この発明の一実施形態に係るＰＣシース用のグラウト充填検知器(１)は、例えば合成樹脂製の螺旋波形管からなるＰＣシース(２)(２)同士を連結する管状センサ台 (３)と、この管状センサ台 (３)に搭載されるセンサ(４)(５)とを備えている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A grout filling detector (1) for a PC sheath according to an embodiment of the present invention includes a tubular sensor base (3) for connecting PC sheaths (2) and (2) made of, for example, a synthetic resin spiral corrugated tube, and And (4) and (5) mounted on the tubular sensor base (3).
管状センサ台 (３)は、図１及び図２に示すように、ポリエチレン樹脂等の合成樹脂製であって、その中間部分は、例えば略直筒状の台本体部(10)となっている。また、管状センサ台(３)の両端部分は、ＰＣシース(２)(２)の端部に螺合する例えば螺旋波形状の連結部(11)(11)となっている。そして、台本体部(10)と連結部(11)(11)とが、例えば台本体部(10)から連結部(11)(11)へ向かって拡開したテーパ部(12)(12)を介して一体的に連結されている。 As shown in FIGS. 1 and 2, the tubular sensor base (3) is made of a synthetic resin such as polyethylene resin, and an intermediate portion thereof is, for example, a substantially straight cylindrical base body (10). Further, both end portions of the tubular sensor base (3) are, for example, spiral wave-shaped connecting portions (11) and (11) which are screwed into the end portions of the PC sheaths (2) and (2). Then, the base body part (10) and the connecting parts (11) and (11) are, for example, taper parts (12) and (12) that are expanded from the base body part (10) toward the connecting parts (11) and (11). It is connected integrally through.
この管状センサ台 (３)の内部には、図４及び図５に示すように、ＰＣシース(２)(２)と同様にＰＣ鋼材(６)が内包され且つ内部にグラウト(７)が充填されるようになっている。 As shown in FIGS. 4 and 5, the tubular sensor base (3) contains a PC steel material (6) and is filled with grout (7) as in the case of the PC sheath (2) (2). It has come to be.
台本体部(10)の管壁には、異なる種類のセンサ(４)(５)を選択的に搭載可能とするための２種類の搭載部位(15)(16)が設けられている。 Two types of mounting parts (15) and (16) for selectively mounting different types of sensors (4) and (5) are provided on the tube wall of the base body (10).
第１の搭載部位(15)は、センサ(４)を搭載するために設けられており、図１及び図２に示すように、台本体部(10)の管壁に形成した開口部(20)と、この開口部(20)を囲むように形成した複数の突起(21)(21)…とからなる。 The first mounting portion (15) is provided for mounting the sensor (4). As shown in FIGS. 1 and 2, the opening (20) formed in the tube wall of the base body (10). And a plurality of protrusions (21), (21),... Formed so as to surround the opening (20).
開口部(20)は、例えば管壁の周方向に沿った長孔状となっている。なお、開口部(20)は、センサ(４)を搭載するときにのみ形成され、第２の搭載部位(16)を使用するときには閉塞されている。また、各突起(21)(21)…は、管壁の開口部(20)周りを径内方向に凹入してなり、周方向に沿うように形成されている。 The opening (20) has, for example, a long hole shape along the circumferential direction of the tube wall. The opening (20) is formed only when the sensor (4) is mounted, and is closed when the second mounting portion (16) is used. Further, each of the protrusions (21), (21)... Is recessed in the radially inward direction around the opening (20) of the tube wall, and is formed along the circumferential direction.
第２の搭載部位(16)は、センサ(５)を搭載するために設けられており、図２及び図３に示すように、台本体部(10)の管壁における開口部(20)と管軸を挟んで対向する部分を、径外方向へ膨出して平面視略凸形に形成した膨出部からなる。 The second mounting portion (16) is provided for mounting the sensor (5). As shown in FIGS. 2 and 3, the opening (20) in the tube wall of the base body portion (10) The part which opposes on both sides of a pipe axis consists of the bulging part which bulged in the radial direction and formed in planar view substantially convex shape.
なお、第１及び第２搭載部位(15)(16)は、管軸を挟んで対向して形成するだけでなく、例えば管軸方向に沿って並べるようにして台本体部(10)に形成しても良い。また、台本体部(10)には、センサ(４)(５)の搭載部位(15)(16)だけでなく、例えばグラウト(７)の充填に際して内部空気を排出するための排気筒を突設しても良い。 The first and second mounting portions (15) and (16) are not only formed facing each other across the tube axis, but also formed in the base body portion (10) so as to be arranged, for example, along the tube axis direction. You may do it. In addition to the mounting portions (15) and (16) of the sensors (4) and (5), for example, an exhaust pipe for discharging internal air when filling the grout (7) is projected on the base body portion (10). May be installed.
センサ(４)は、例えばセンサ面(４ａ)にグラウト(７)が接触したときの温度変化等によって、グラウト(７)の充填を検知するようになっている。このセンサ(４)は、図１及び図４に示すように、シート状に形成されていて、開口部(20)に取り付けられるようになっている。 The sensor (4) detects the filling of the grout (7) by, for example, a temperature change when the grout (7) contacts the sensor surface (4a). As shown in FIGS. 1 and 4, the sensor (4) is formed in a sheet shape and is attached to the opening (20).
開口部(20)への取り付けに際しては、金属板(25)等に貼り付けたセンサ(４)を、そのセンサ面(４ａ)が径内方向へ向くようにして開口部(20)に嵌め込んだ状態で、金属板(25)を開口部(20)周りの管壁の外周面に接着するようにしている。 When attaching to the opening (20), the sensor (4) affixed to the metal plate (25) or the like is fitted into the opening (20) so that the sensor surface (4a) faces in the radial direction. In this state, the metal plate (25) is bonded to the outer peripheral surface of the tube wall around the opening (20).
このセンサ(４)の取り付け状態において、センサ(４)の周りには、複数の突起(21)(21)…が径内方向に突出しているので、緊張したＰＣ鋼材(６)がセンサ面(４ａ)に当たってセンサ(４)が破損するといった不具合を防止することができる。 In the attached state of the sensor (4), a plurality of protrusions (21), (21),... Protrude in the radial direction around the sensor (4). It is possible to prevent a problem that the sensor (4) is damaged by hitting 4a).
センサ(５)は、例えばセンサ面(５ａ)にグラウト(７)が接触したときの振動特性の変化等によって、グラウト(７)の充填を検知するようになっている。このセンサ(５)は、図３及び図５に示すように、ある程度の厚みを有するチップ状に形成されていて、そのセンサ面(５ａ)が径内方向へ向くようにして、膨出部(16)に接着剤等で接着した状態で収容される。 The sensor (5) detects the filling of the grout (7) by, for example, a change in vibration characteristics when the grout (7) contacts the sensor surface (5a). As shown in FIGS. 3 and 5, the sensor (5) is formed in a chip shape having a certain thickness. The sensor surface (5a) is directed inwardly in the radial direction so that the bulging portion ( 16) is accommodated in an adhesive state.
このセンサ(５)の取り付け状態において、センサ(５)は管壁の内周面よりも外側に位置しているので、緊張したＰＣ鋼材(６)がセンサ面(５ａ)に当たってセンサ(５)が破損するといった不具合を防止することができる。 In the attached state of the sensor (5), the sensor (5) is located outside the inner peripheral surface of the tube wall, so that the strained PC steel material (6) hits the sensor surface (5a) and the sensor (5) Problems such as breakage can be prevented.
なお、センサ(４)(５)としては、上記のようなタイプに限定されるものではなく、例えばセンサ面(４ａ)(５ａ)にグラウト(７)が接触したときの電極間の電気抵抗値の変化等によって、グラウトの充填を検知するタイプのものであっても良い。また、これらセンサ(４)(５)から延びるリード線(４ｂ)(５ｂ)は、管状センサ台 (３)の外部へ引き出され、図示しない測定装置等に接続されるようになっている。 The sensors (4) and (5) are not limited to the types described above. For example, the electrical resistance value between the electrodes when the grout (7) is in contact with the sensor surfaces (4a) and (5a). It may be of the type that detects the filling of grout by the change of the above. Further, the lead wires (4b) and (5b) extending from these sensors (4) and (5) are drawn out of the tubular sensor base (3) and connected to a measuring device (not shown) or the like.
次に、上記構成のグラウト充填検知器(１)を用いたＰＣシース(２)(２)の埋設工法について説明する。 Next, a method for burying the PC sheaths (2) and (2) using the grout filling detector (1) having the above-described configuration will be described.
まず、センサ(４)(５)のうちのいずれかを選択して、管状センサ台 (３)のいずれかの搭載部位(15)(16)に搭載する。そして、管状センサ台 (３)を介してＰＣシース(２)(２)同士を連結した状態で、コンクリート床版(30)内に埋設し、ＰＣシース(２)(２)及び管状センサ台 (３)の内部にＰＣ鋼材(６)を挿通した後、グラウト(７)を充填する。 First, one of the sensors (4) and (5) is selected and mounted on any mounting part (15) or (16) of the tubular sensor base (3). And in the state which connected PC sheath (2) (2) via the tubular sensor stand (3), it embed | buried in a concrete floor slab (30), PC sheath (2) (2), and a tubular sensor stand ( After inserting the PC steel material (6) into the interior of 3), the grout (7) is filled.
図４は、センサ(４)を搭載したグラウト充填検知器(１)を用いたときの状態を示しており、図５は、センサ(５)を搭載したグラウト充填検知器(１)を用いたときの状態を示している。いずれの場合も、センサ(４)(５)が上部側に位置するように配置している。 FIG. 4 shows a state when the grout filling detector (1) equipped with the sensor (4) is used, and FIG. 5 uses the grout filling detector (1) equipped with the sensor (5). Shows the state. In either case, the sensors (4) and (5) are arranged on the upper side.
グラウト(７)は、ＰＣシース(２)(２)及び管状センサ台 (３)内の空気を外部へ押し出すようにして、ＰＣシース(２)(２)及び管状センサ台 (３)の底部側から順次上部側を満たすように充填される。グラウト(７)がＰＣシース(２)(２)及び管状センサ台 (３)の上部付近に達して、センサ(４)のセンサ面(４ａ)又はセンサ(５)のセンサ面(５ａ)に接触すると、センサ(４)又はセンサ(５)がグラウト(７)の充填を検知し、これによりＰＣシース(２)(２)及び管状センサ台 (３)の内部がグラウトで満たされていることを確認することができる。 The grout (7) pushes out the air in the PC sheath (2) (2) and the tubular sensor base (3) to the outside, and the bottom side of the PC sheath (2) (2) and the tubular sensor base (3). Are sequentially filled to fill the upper side. The grout (7) reaches the upper part of the PC sheath (2) (2) and the tubular sensor base (3) and contacts the sensor surface (4a) of the sensor (4) or the sensor surface (5a) of the sensor (5). Then, the sensor (4) or sensor (5) detects the filling of the grout (7), thereby confirming that the inside of the PC sheath (2) (2) and the tubular sensor base (3) is filled with grout. Can be confirmed.
なお、この発明は、上記実施形態に限定されるものではなく、この発明の範囲内で上記実施形態に多くの修正及び変更を加え得ることは勿論である。 In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of this invention.
(１) グラウト充填検知器
(２) ＰＣシース
(３) 管状センサ台
(４)(５) センサ
(６) ＰＣ鋼材
(７) グラウト
(16) 膨出部
(20) 開口部
(21) 突起
(1) Grout filling detector
(2) PC sheath
(3) Tubular sensor base
(4) (5) Sensor
(6) PC steel
(7) Grout
(16) bulge
(20) Opening
(21) Projection
Claims (4)
The tubular wall of the tubular sensor base is provided with a bulging portion formed by bulging a part of the tubular sensor base in the radially outward direction, and the sensor is positioned outside the inner peripheral surface of the tubular wall in the bulging portion. A grout filling detector for a PC sheath according to claim 2 or 3, wherein the detector is housed as described above.
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| JP2003429517A JP3867859B2 (en) | 2003-12-25 | 2003-12-25 | PC sheath embedding method and grout filling detector for PC sheath |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003429517A JP3867859B2 (en) | 2003-12-25 | 2003-12-25 | PC sheath embedding method and grout filling detector for PC sheath |
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| Publication Number | Publication Date |
|---|---|
| JP2005188101A true JP2005188101A (en) | 2005-07-14 |
| JP3867859B2 JP3867859B2 (en) | 2007-01-17 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007009681A (en) * | 2005-06-01 | 2007-01-18 | Taiheiyo Cement Corp | Filling sensor, sheath tube, and sheath tube joint member |
| JP2007247267A (en) * | 2006-03-16 | 2007-09-27 | Shoki:Kk | Cable protection sheath member to be embedded in bridge road and cable protection sheath to be embedded in bridge road |
| JP2011247005A (en) * | 2010-05-28 | 2011-12-08 | Kajima Corp | Surface layer treatment material for weak ground |
| JP2015151781A (en) * | 2014-02-17 | 2015-08-24 | 株式会社栗本鐵工所 | Prestressing steel protection sheath with sensor, and method of manufacturing the same |
| JP2017096726A (en) * | 2015-11-20 | 2017-06-01 | 太平洋セメント株式会社 | Corrosion sensor and sheath tube joint member |
| JP2018184796A (en) * | 2017-04-27 | 2018-11-22 | 高周波熱錬株式会社 | Filling evaluation method of grout material and filling evaluation member of grout material |
| CN110319879A (en) * | 2019-06-19 | 2019-10-11 | 青岛理工大学 | A kind of safety characteristics intelligent monitoring technology for building life cycle management |
| KR102169300B1 (en) * | 2019-12-19 | 2020-10-23 | 이동호 | Segmented prestressed girder with reinforced concrete and manufacturing method thereof |
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- 2003-12-25 JP JP2003429517A patent/JP3867859B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007009681A (en) * | 2005-06-01 | 2007-01-18 | Taiheiyo Cement Corp | Filling sensor, sheath tube, and sheath tube joint member |
| JP2007247267A (en) * | 2006-03-16 | 2007-09-27 | Shoki:Kk | Cable protection sheath member to be embedded in bridge road and cable protection sheath to be embedded in bridge road |
| JP2011247005A (en) * | 2010-05-28 | 2011-12-08 | Kajima Corp | Surface layer treatment material for weak ground |
| JP2015151781A (en) * | 2014-02-17 | 2015-08-24 | 株式会社栗本鐵工所 | Prestressing steel protection sheath with sensor, and method of manufacturing the same |
| JP2017096726A (en) * | 2015-11-20 | 2017-06-01 | 太平洋セメント株式会社 | Corrosion sensor and sheath tube joint member |
| JP2018184796A (en) * | 2017-04-27 | 2018-11-22 | 高周波熱錬株式会社 | Filling evaluation method of grout material and filling evaluation member of grout material |
| CN110319879A (en) * | 2019-06-19 | 2019-10-11 | 青岛理工大学 | A kind of safety characteristics intelligent monitoring technology for building life cycle management |
| WO2020253409A1 (en) * | 2019-06-19 | 2020-12-24 | 青岛理工大学 | Technique for intelligently monitoring safety state of building throughout life cycle thereof |
| KR102169300B1 (en) * | 2019-12-19 | 2020-10-23 | 이동호 | Segmented prestressed girder with reinforced concrete and manufacturing method thereof |
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