Bridge scour has always been one of the main threats to bridge safety. Since bridge collapse caused by scour occurs relatively sudden, it is necessary to monitor the scour of bridge piers in real-time and take effective measures in time for the locations where bridge scour is serious. Therefore, a bridge scour monitoring method based on active heating and temperature measurement was proposed in this paper. The method uses heating cables and DS18B20 sensors to make active heating and temperature measurement cables, arranges the cables around the bridge piers, and realizes real-time positioning of bridge scour depth and water level height by analyzing the temperature distributions along the cables. The feasibility of this method for monitoring bridge scour was verified through finite element simulation and experimental testing. The simulation and test results are basically consistent, and the results prove that the method can effectively monitor bridge scour, and has advantages such as low cost, easy installation, and accurate positioning.
ChengLMouX. Local scour protection test of ring-wing pier. Progr Water Conserv Hydropower Technol2012; 32(3): 14–18.
2.
ZhaoWSunZBase on wireless communication of harbor building sediment scour monitoring system. Sens Microsyst2009; 28(11): 98–101.
3.
ParkI. Assessment of bridge scour and riverbed variation by a ground penetrating radar. In: 10th international conference on ground penetrating radar, 2005, pp.411–414. Delft, The Netherlands: Delft University of Technology.
4.
FalcoF. The monitoring of bridges for scour by sonar and sediment. NDT E Int2002; 35(2): 17–123.
5.
HuntB. Scour monitoring programs for bridge health. In: Proceedings of 6th international bridge engineering conference, 2005, pp.531–536. Washington, DC: National Academy Press.
6.
PrendergastLGavinK. A review of bridge scour monitoring techniques. J Rock Mech Geotechn Eng2014; 6(2): 138–149.
7.
HaniNOghuzEJoeD. Evaluation of bridge scour monitoring methods. In: Proceedings of the 10th international conference and exhibition-structural faults and repair conference2002. Edinburgh: Engineering Technics Press.
8.
LuJHongJSuC. Field measurements and simulation of bridge scour depth variation during noods. J Hydraul Eng2008; 134(6): 810–821.
9.
BaglioSFaraciCFotiE, et al. Stereo vision for noninvasive dynamic measurements of the scour process around a circular cylinder in an oscillating flow. Conf Exhib2000; 2: 987–992.
10.
FarooqMAzhariFBanthiaN. Robust capacitance sensors for wireless bridge scour monitoring. J Civil Struct Health Monit2022; 13(2): 399–412.
11.
XiongWCaiCKongX. Instrumentation design for bridge scour monitoring using fiber bragg grating sensors. Appl Optic2012; 51(5): 547–557.
12.
LinYChenJChangK. Real-time monitoring of local scour by using fiber bragg grating sensors. Smart Mater Struct2005; 14(4): 644–670.
13.
LiangTWuPHuangH, et al. Design a bridge scour monitoring system by pressing the fiber Bragg grating with a rolling pulley mechanism. Microsyst Technol Micro Nanosyst Inf Storage Process Syst2021; 27(4): 1211–1216.
14.
YankielunNZabilanskyLLaboratory investigation of time-domain reflectometry system for monitoring bridge scour. J Hydraul Eng1999; 125(12): 1279–1284.
15.
BinZYuX. Design and evaluation of a distributed TDR moisture sensor. Smart Struct Syst2010; 6(9): 1007–1023.
16.
PascalYDaschnerFLiserreM, et al. Condition monitoring of power module using S-parameters, TDR, and TDT. Microelectron Reliab2022; 138: 114615.
17.
TangFChenYLiZ, et al. Characterization and field validation of smart rocks for bridge scour monitoring. Struct Health Monit2019; 18(5–6): 1669–1685.
18.
LinYLeeFChangK, et al. The artificial intelligence of things sensing system of real-time bridge scour monitoring for early warning during floods. Sensors2021; 21(14), 4942.
19.
BelmokhtarMSchmidtFSavadkoohiA, et al. Scour monitoring of a bridge pier through eigenfrequencies analysis. SN Appl Sci2021; 3, 1–14.
20.
SelkerFSelkerJ. Investigating water movement within and near wells using active point heating and fiber optic distributed temperature sensing. Sensors2018; 18(4): 1023.
21.
CampbellGCalissendorffCWilliamsJ. Probe for measuring soil specific heat using a heat-plus method. Soil Sci Soc Am J1991; 55(1): 291–293.
22.
BristowKKluitenbergGHonrtonR. Measurement of soil thermal properties with a dual-probe heat-plus technique. Soil Sci Soc Am J1994; 58(5): 1288–1294.
23.
DornstadterJ. Detection of internal scour in embankment dams. Trans Int Congr Large Dams Paris1997; 2: 1083–1193.
24.
BristowK. Measurement of thermal properties and water content of unsaturated sandy soil using dual-probe heat pulse probes. Agric Forest Meteorol1998; 89(2): 75–84.
25.
KrishnaiahSSinghDJadhavG. A methodology for determining thermal properties of rocks. Int J Rock Mech Mining Sci2004; 41(5): 877–882.
26.
CôtéACarrierBLeducJ. Water leakage detection: using optical fiber at the Peribonka dam. In: Seventh international symposium on field measurements in geomechanics. Boston, MA: American Society of Civil Engineers, 2007, pp.1–12.
27.
FreifeldBFinsterleSOnstottC. Ground surface temperature reconstructions: using in situ estimate for thermal conductivity acquired with a fiber-optic distributed thermal perturbation sensor. Geophys Res Lett2008; 35(14): 1–5.
28.
XiaoHCaiDHeJ. Determination method of thermal conductivity of rock and soil based on distributed optical fiber sensing technology. Chin J Rock Mech Eng2009; 28(4): 819–826.
29.
SaydeCGregoryCGilroguezM. Feasibility of soil moisture monitoring with heated fiber optics. Water Resour Res2010; 46(6): 1–8.
30.
WenM. Study on improvement of thermal probe scheme for measuring soil hydrothermal characteristics. Doctoral Dissertation of China Agricultural University, 2018; pp.49–74.
31.
PatankarSSpaldingD. Calculation procedure for heat, mass and momentum-transfer in 3-dimensional parabolic flows. Int J Heat Mass Transf1972; 15(10): 17–87.
32.
Al-ShammaryAAGCaballero-CalvoAJeburHA. A novel heat-pulse probe for measuring soil thermal conductivity: field test under different tillage practices. Comput Electr Agric2022; 202: 107414.
33.
CarslawHJaegerG. Conduction of heat in solid. Oxford: Oxford.
34.
ZhaoXLiWZhouL, et al. Active thermometry based DS18B20 temperature sensor network for offshore pipeline scour monitoring using K-means clustering algorithm. Int J Distrib Sens Netw2013; 9(6): 852090.
35.
SpanRWagnerW. A new equation of state for carbon dioxide covering the fluid region from the triple-point temperature to 1100 K at pressures up to 800 MPa. J Phys Chem Ref Data1996; 25(6): 1509–1596.
36.
InoueA. Stabilization of metallic supercooled liquid and bulk amorphous alloys. Acta Mater2000; 48(1): 279–306.
37.
CaiJHuaiX. A Lattice Boltzmann Model for fluid-solid coupling heat transfer in fractal porous media. Chin Phys Lett2009; 26(6): 064401.
38.
LiaoQHanBYangW. Temperature measuring instrument based on single bus device DS18B20. J Foreign Electr2008; 2: 24–26.
