WO2008142087A1 - Dispositif pour détecter des mouvements dans des composants sensibles au tassement - Google Patents

Dispositif pour détecter des mouvements dans des composants sensibles au tassement Download PDF

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Publication number
WO2008142087A1
WO2008142087A1 PCT/EP2008/056212 EP2008056212W WO2008142087A1 WO 2008142087 A1 WO2008142087 A1 WO 2008142087A1 EP 2008056212 W EP2008056212 W EP 2008056212W WO 2008142087 A1 WO2008142087 A1 WO 2008142087A1
Authority
WO
WIPO (PCT)
Prior art keywords
settlement
transducer
data
sensitive components
monitored
Prior art date
Application number
PCT/EP2008/056212
Other languages
German (de)
English (en)
Inventor
Matthias Braun
Detlef Lumma
Eckhard Voltmann
Original Assignee
Knorz, Siegfried
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP08102288A external-priority patent/EP2025819A1/fr
Application filed by Knorz, Siegfried filed Critical Knorz, Siegfried
Publication of WO2008142087A1 publication Critical patent/WO2008142087A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures

Definitions

  • the invention relates to a device for detecting movements of settlement-sensitive components.
  • JP 2000171203 A only a moving object is monitored with a laser.
  • the laser is installed on the moving object and aligned with a rigid target board.
  • the target board (reflector) is attached to two tension wires, which in turn are attached to two fixed points.
  • the tension wires are only an auxiliary construction for fixing the reflectors.
  • This prior art device has the disadvantage that it operates relatively inaccurately, since it is theoretically and practically possible that the laser beam does not migrate out of the target plate, although the movable object lowers and simultaneously rotates, so that the deflection by the settlement and by the rotation is canceled and thus no alarm message is issued.
  • the device is sensitive to environmental influences such as soiling. For example, if the lens of the laser beam generating device is dirty, a malfunction occurs.
  • the technical problem underlying the invention is to provide a device for detecting movements of settlement-sensitive components, which works very accurately and is also insensitive to environmental influences.
  • Settlement-sensitive components are understood to mean buildings, in particular halls, widely tensioned supporting systems, roof structures and stadium roofs. Also construction helpers, which are provided for example with the Baugrubenverbau, armaments and so on, fall under this.
  • the inventive device for detecting movements of settlement-sensitive components is characterized in that a tensioned wire or tensioning cable provided is, which is fixedly arranged, that is, on a settlement insensitive component.
  • a pickup is arranged, which can accommodate vertical and / or horizontal movements.
  • one or two grinders are arranged in the pickup via which a movement of the tension wire is detected.
  • the inventively provided potentiometric transducer works in principle as a linear variable resistance, that is, in each case a slider is pushed over a respective resistance path. If a voltage is connected to the transducer, the output voltage at the wiper is proportional to the position of the wiper on the resistor track.
  • the resistance track is advantageously made of high-quality Leitplastik. As a result, a very high resolution is achieved and it can at high feed rates, for example, up to 10 meters per second, recorded paths of, for example, 10 millimeters to 2,000 millimeters and further processed analogously.
  • the device according to the invention is characterized in that all horizontal and vertical movements can be measured.
  • the measurement accuracy is in the tenth of a millimeter range.
  • climate data such as temperature, wind speed, humidity, rainfall, air pressure and component temperatures can be measured and stored simultaneously with the deformation data.
  • a remote transmission of the stored data by a disk exchange, radio or data cable
  • a disk exchange radio or data cable
  • Different receivers possible Particular preference is given to data exchange via satellite.
  • Applications of the device according to the invention are hall constructions, bridge structures, retaining walls, banks, dams, construction aid, excavations and the like.
  • the maximum permissible deformations in the relevant and critical cross-sections are calculated if one starts from an existing structure. Taking into account a given residual safety factor, new deformation limits are defined. With a proposed residual safety factor of 2.0, the limits are set at 50% of the calculated maximum values. With a residual safety factor of 1.67, the limits are set accordingly to 60% of the maximum values. In the device according to the invention, the specified limit values minus the measured pre-deformation are then set as admissible residual deformation.
  • a tensioning cable or a tensioning strand in the measuring axis forms a reference beam at a predetermined distance from the supporting structure.
  • transducers are installed which continuously record the relative vertical displacements of the structure to the tensioning cable.
  • the pre-deformation of the structure can be taken into account during assembly of the sensors or entered as a correction value in the evaluation.
  • an alarm is triggered when the specified limit value is exceeded. A new hiring of a new one Increased limit in the evaluation is possible at any time.
  • the device according to the invention has the advantage that it is very cost-effective and can be used quickly and effectively on previously damaged structures.
  • Continuous monitoring permanent monitoring
  • Changes in the deformations are recognizable and can serve to assess the remaining service life of the bridge structure.
  • the emission of an alarm when predetermined limit deformations are reached is possible.
  • a coupling of the measured values with climate data can optionally be added.
  • the continuous monitoring ensures a high level of safety for the bridge operator and the number of local checks can be minimized.
  • volume detection makes it possible to determine, for example, whether and how many vehicles are on the settlement-sensitive component, such as a bridge.
  • the transmission of the data of the transducer and / or the climate data is advantageously carried out via satellite.
  • a photovoltaic system with accumulator is advantageously provided, so that the device can also work independently and, for example, is supplied with electricity for several days.
  • a heating device such as a heating tube is provided so that the device of snow and ice can be kept free.
  • a further advantageous embodiment of the invention provides that virtual values can be simply applied to measured data as well as values calculated in the device by means of a powerful processor in the devices and in the device, such as, for example, vibration monitoring and temperature differences.
  • Switching outputs can be used to actively set a signal or protectively intervene in the process.
  • the device can be operated in addition to an Ethernet interface via serial ports.
  • the transmission of an alarm can via SMS (Short Message Service), e-mail or fax or a digital output.
  • alarms occurring with a software are recorded, archived and listed.
  • Each alarm message and acknowledgment is recorded and archived with time stamp and date stamp.
  • the device according to the invention offers the possibility of archiving the measurement data in addition to the direct transmission to a PC or server, this also in the device's internal ring memory.
  • the measurement data with pre- and post-history around the alarm time are available for further evaluation by means of the software.
  • a remote monitoring by the device according to the invention provides that measured values are recorded and stored locally and queried by means of a remote inquiry, which takes place via modem, Internet or GSM. In remote areas, it is possible to remotely control or alarm through a satellite phone.
  • warnings can be automatically sent to the service personnel via SMS or e-mail. This makes it possible to gain longer-term information about the condition of a building.
  • the measured values are read out regularly and, in some cases, automatically evaluated. Changes in status are detected in good time.
  • One field of application of the device according to the invention is inter alia in the monitoring of gas turbines or in the vibration monitoring of compressors and compressors.
  • a measurement of the absolute oscillation, the relative shaft vibrations and a measurement of structural vibrations can also be carried out.
  • the device according to the invention can also be used to detect absolute deformations at predetermined measuring points.
  • the device according to the invention can be combined with a video surveillance system for traffic monitoring. The monitoring of the traffic area can be switched on and off via the measuring sensors. If a predefined deformation limit value is exceeded on a sensor, video monitoring is activated and deactivated only when the limit value is not reached. On the video recording, the traffic situation with all vehicles is recorded and can be assigned to the respective deformations at the measuring point. An unambiguous identification of vehicles with increased total weight is possible when a vehicle is alone in the load influencing area of the deformation sensor. However, the predetermined deformation limit value can also be exceeded by a load combination of several vehicles in the load influence range, although no vehicle exceeds the permissible total weight.
  • the determination of the deformation limit has a direct influence on the number of monitoring operations.
  • the limit value taking into account the permissible bridge load, it can be assumed that that in certain traffic situations, for example, when only one vehicle is on the bridge, even a vehicle with excessive total weight does not trigger a monitoring process yet.
  • FIG. 1 shows a device according to the invention in longitudinal section.
  • 3a shows an illustration of the potentiometric displacement transducer for vertical deformations
  • Fig. 3b shows a representation of the potentiometric transducer for horizontal deformations.
  • Fig. 1 shows a device 1, which is arranged on settlement-sensitive components 2, such as rafters.
  • the device 1 has a tensioning cable 9, which is secured by means of holding plates 6 to insensitive to settlement components 3, for example masonry walls, by means of screws 5.
  • potentiometric displacement sensor 7 are arranged at the settlement sensitive components 2 .
  • the wire rope 9 is guided, which, as already stated, to the set- insensitive components 3 is attached and has a certain bias.
  • the tensioning cable 9 can be tensioned via a tensioning device 4, such that the tensioning cable 9 has a predetermined pretension.
  • Fig. 2 shows the potentiometric transducer 7.
  • the transducer 7 operates like a linear variable resistance, that is, a wiper 10 is pushed over a resistor track 11. If a voltage is applied to the transducer 7, the output voltage is at the wiper
  • Fig. 3a illustrates the grinder 10 for the horizontal displacement of the wire 9.
  • Fig. 3b illustrates the grinder 12 for the vertical displacement of the wire 9.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

L'invention concerne un dispositif pour détecter les mouvements dans des composants sensibles au tassement, comprenant un fil de précontrainte ou un câble de tension, disposés sur un composant sensible au tassement, un collecteur étant placé sur le composant à surveiller, ce dernier étant conçu pour détecter des mouvements verticaux et/ou horizontaux.
PCT/EP2008/056212 2007-05-23 2008-05-20 Dispositif pour détecter des mouvements dans des composants sensibles au tassement WO2008142087A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007024302 2007-05-23
DE102007024302.4 2007-05-23
EP08102288A EP2025819A1 (fr) 2007-05-23 2008-03-05 Dispositif destiné à l'enregistrement de mouvements de composants sensibles au tassement
EP08102288.1 2008-03-05

Publications (1)

Publication Number Publication Date
WO2008142087A1 true WO2008142087A1 (fr) 2008-11-27

Family

ID=39639234

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/056212 WO2008142087A1 (fr) 2007-05-23 2008-05-20 Dispositif pour détecter des mouvements dans des composants sensibles au tassement

Country Status (1)

Country Link
WO (1) WO2008142087A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109629612A (zh) * 2018-12-15 2019-04-16 浙江工业大学 一种附着潜入式桥梁桩基冲刷监测系统安装方法
US20210241546A1 (en) * 2020-02-04 2021-08-05 XL Hybrids Data extraction apparatuses, systems, and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023167A1 (fr) * 1979-07-09 1981-01-28 Société Anonyme FRANCE-ATLAS Procédé et dispositif d'essais dynamiques de pieux
GB2152121A (en) * 1983-12-27 1985-07-31 Vyzk Ustav Inzhenerskikh A compacting deep foundation structure
DE3424776A1 (de) * 1984-07-05 1986-01-16 Karl Bauer Spezialtiefbau GmbH & Co KG, 8898 Schrobenhausen Verfahren und vorrichtung zum ermitteln der tragfaehigkeit von pfaehlen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023167A1 (fr) * 1979-07-09 1981-01-28 Société Anonyme FRANCE-ATLAS Procédé et dispositif d'essais dynamiques de pieux
GB2152121A (en) * 1983-12-27 1985-07-31 Vyzk Ustav Inzhenerskikh A compacting deep foundation structure
DE3424776A1 (de) * 1984-07-05 1986-01-16 Karl Bauer Spezialtiefbau GmbH & Co KG, 8898 Schrobenhausen Verfahren und vorrichtung zum ermitteln der tragfaehigkeit von pfaehlen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109629612A (zh) * 2018-12-15 2019-04-16 浙江工业大学 一种附着潜入式桥梁桩基冲刷监测系统安装方法
US20210241546A1 (en) * 2020-02-04 2021-08-05 XL Hybrids Data extraction apparatuses, systems, and methods

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