{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:28:19Z","timestamp":1772252899043,"version":"3.50.1"},"reference-count":47,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,11,23]],"date-time":"2018-11-23T00:00:00Z","timestamp":1542931200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"The Technique Project of Fuzhou","award":["Grant No. 2017-G-74"],"award-info":[{"award-number":["Grant No. 2017-G-74"]}]},{"name":"The Education and Scientific Research Project for Young and Middle-aged Teachers of Fujian Province","award":["Grant No. JAT160044"],"award-info":[{"award-number":["Grant No. JAT160044"]}]},{"name":"The Hebei Province Key Laboratory of Evolution and Control of Mechanical Behavior in Traffic Engineering Structure","award":["Grant No. 201507"],"award-info":[{"award-number":["Grant No. 201507"]}]},{"name":"The Transportation and Communication Science and Technology Project of Fujian Province","award":["Grant No. 201536"],"award-info":[{"award-number":["Grant No. 201536"]}]},{"name":"The Open Fund of Fujian Provincial Key Laboratory of Advanced Technology and Informatization in Civil Engineering","award":["Grant No. 201536"],"award-info":[{"award-number":["Grant No. 201536"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Prestress loss evaluation in prestressed strands is essential for prestressed structures. However, the sensors installed outside the duct can only measure the total prestress loss. The sensors attached on strands inside the duct also have several problems, such as inadequate durability in an aggressive environment and vulnerability to damage during tensioning. This paper proposes a new installation method for long-gauge fiber Bragg grating (LFBG) sensors to prevent accidental damage. Then the itemized prestress losses were determined in each stage of the pre-tensioning and post-tensioning according to the LFBG measurements. We verified the applicability of the LFBG sensors for prestress monitoring and the accuracy of the proposed prestress loss calculation method during pre-tensioning and post-tensioning. In the pre-tensioning case, the calculated prestress losses had less deviation from the true losses than those obtained from foil-strain gauges, and the durability of the LFBG sensors was better than foil-strain gauges, whereas in post-tensioning case, the calculated prestress losses were close to those derived from theoretical predictions. Finally, we monitored prestress variation in the strand for 90 days. The itemized prestress losses at each stages of post-tensioning were obtained by the proposed calculation method to show the prospect of the LFBG sensors in practical evaluation.<\/jats:p>","DOI":"10.3390\/s18124106","type":"journal-article","created":{"date-parts":[[2018,11,23]],"date-time":"2018-11-23T12:20:28Z","timestamp":1542975628000},"page":"4106","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Evaluation of Prestress Loss Distribution during Pre-Tensioning and Post-Tensioning Using Long-Gauge Fiber Bragg Grating Sensors"],"prefix":"10.3390","volume":"18","author":[{"given":"Sheng","family":"Shen","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Fuzhou University, Fuzhou 350108, China"},{"name":"Hebei Province Key Laboratory of Evolution and Control of Mechanical Behavior in Traffic Engineering Structure, Shijiazhuang Tiedao University, Shijiazhuang 050043, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yao","family":"Wang","sequence":"additional","affiliation":[{"name":"CSCEC Strait Construction and Development Co., LTD, Fuzhou 350015, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sheng-Lan","family":"Ma","sequence":"additional","affiliation":[{"name":"Fujian Provincial Key Laboratory of Advanced Technology and Informatization in Civil Engineering, Fujian University of Technology, Fuzhou 350118, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Di","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, Fuzhou University, Fuzhou 350108, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhi-Hong","family":"Wu","sequence":"additional","affiliation":[{"name":"CSCEC Strait Construction and Development Co., LTD, Fuzhou 350015, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiao","family":"Guo","sequence":"additional","affiliation":[{"name":"CSCEC Strait Construction and Development Co., LTD, Fuzhou 350015, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,23]]},"reference":[{"key":"ref_1","unstructured":"Nawy, E. (2006). Prestressed Concrete: A Fundamental Approach, Chongqing University Press. [5th ed.]."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Smith, J. (2001). Capacity of Prestressed Concrete Containment Vessels with Prestressing Loss, Sandia Report.","DOI":"10.2172\/786625"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1013","DOI":"10.1016\/0045-7949(95)00348-7","article-title":"The effect of prestress losses on the seismic response of prestressed concrete frames","volume":"59","author":"Mo","year":"1996","journal-title":"Comput. Struct."},{"key":"ref_4","first-page":"635","article-title":"Collapse of Ynys-y-Gwas Bridge, West Glamorgan","volume":"84","author":"Woodward","year":"1988","journal-title":"Proc. Inst. Civ. Eng."},{"key":"ref_5","unstructured":"Sumitro, S., Jarosevic, A., and Wang, M.L. (2002, January 13\u201319). Elasto-magnetic sensor utilization on steel cable stress measurement. Proceedings of the 1st Fib Congress, Osaka, Japan."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"14079","DOI":"10.3390\/s150614079","article-title":"Estimation of Prestress Force Distribution in the Multi-Strand System of Prestressed Concrete Structures","volume":"15","author":"Cho","year":"2015","journal-title":"Sensors"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Cappello, C., Zonta, D., Laasri, H.A., Glisic, B., and Wang, M. (2018). Calibration of Elasto-Magnetic Sensors on In-Service Cable-Stayed Bridges for Stress Monitoring. Sensors, 18.","DOI":"10.3390\/s18020466"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1206","DOI":"10.1061\/(ASCE)0733-9399(2001)127:6(599)","article-title":"Application of Wigner-Ville Transform to Evaluate Tensile Forces in Seven-Wire Prestressing Strands","volume":"127","author":"Chen","year":"2001","journal-title":"J. Eng. Mech."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1295","DOI":"10.1063\/1.1472945","article-title":"An ultrasonic method for measuring tensile forces in a seven-wire prestressing strand","volume":"615","author":"Chen","year":"2002","journal-title":"AIP Conf. Proc."},{"key":"ref_10","first-page":"78","article-title":"Vertical prestressing loss in the bos girder of long-span PC continuous bridges","volume":"39","author":"Fang","year":"2006","journal-title":"China Civ. Eng. J."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Xiao, Y., Zhang, Y., Lu, J., Liu, Y., and Cheng, W. (2018). Experimental analysis on pre-stress friction loss of crushed limestone sand concrete beams. Appl. Sci., 8.","DOI":"10.3390\/app8050683"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"467","DOI":"10.12989\/sem.2004.17.3_4.467","article-title":"Identification of prestress-loss in PSC beams using modal information","volume":"17","author":"Kim","year":"2004","journal-title":"Struct. Eng. Mech."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"81","DOI":"10.12989\/sss.2009.5.1.081","article-title":"Vibration and impedance monitoring for prestress-loss prediction in PSC girder bridges","volume":"5","author":"Kim","year":"2009","journal-title":"Smart Struct. Syst."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"997","DOI":"10.1260\/1369-4332.15.6.997","article-title":"Prestress-force estimation in PSC girder using modal parameters and system identification","volume":"15","author":"Ho","year":"2012","journal-title":"Adv. Struct. Eng."},{"key":"ref_15","unstructured":"Yang, Y., and Myers, J.J. (2005, January 11\u201313). Prestress loss measurements in Missouri\u2019s first fully instrumented HPC bridge. Proceedings of the 84th Annual Meeting of the Transportation Research Board, Washington, DC, USA."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"3832468","DOI":"10.1155\/2017\/3832468","article-title":"Prestress loss of CFL in a prestressing process for strengthening RC beams","volume":"2017","author":"Guo","year":"2017","journal-title":"Int. J. Polym. Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"324","DOI":"10.1061\/(ASCE)EM.1943-7889.0000227","article-title":"Use of interwire ultrasonic leakage to quantify loss of prestress in multiwire tendons","volume":"137","author":"Bartoli","year":"2011","journal-title":"J. Eng. Mech."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Ye, X.W., Su, Y.H., and Xi, P.S. (2018). Statistical Analysis of Stress Signals from Bridge Monitoring by FBG System. Sensors, 18.","DOI":"10.3390\/s18020491"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Xiao, F., Chen, G.S., and Hulsey, J.L. (2017). Monitoring Bridge Dynamic Responses Using Fiber Bragg Grating Tiltmeters. Sensors, 17.","DOI":"10.3390\/s17102390"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Hu, D.T., Guo, Y.X., Chen, X.F., and Zhang, C.R. (2017). Cable Force Health Monitoring of Tongwamen Bridge Based on Fiber Bragg Grating. Appl. Sci., 7.","DOI":"10.3390\/app7040384"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1490","DOI":"10.3390\/s130201490","article-title":"Scour monitoring system for subsea pipeline based on active thermometry: Numerical and experimental studies","volume":"13","author":"Zhao","year":"2013","journal-title":"Sensors"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"04017029","DOI":"10.1061\/(ASCE)BE.1943-5592.0001062","article-title":"Scour Monitoring System Using Fiber Bragg Grating Sensors and Water-Swellable Polymers","volume":"22","author":"Kong","year":"2017","journal-title":"ASCE J. Bridge Eng."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"045017","DOI":"10.1088\/0964-1726\/25\/4\/045017","article-title":"Corrosion detection of steel reinforced concrete using combined carbon fiber and fiber Bragg grating active thermal probe","volume":"25","author":"Li","year":"2016","journal-title":"Smart Mater. Struct."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Li, W., Xu, C., Ho, S.C.M., Wang, B., and Song, G. (2017). Monitoring concrete deterioration due to reinforcement corrosion by integrating acoustic emission and FBG strain measurements. Sensors, 17.","DOI":"10.3390\/s17030657"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"278794","DOI":"10.1155\/2013\/278794","article-title":"An improved negative pressure wave method for natural gas pipeline leak location using FBG based strain sensor and wavelet transform","volume":"2013","author":"Hou","year":"2013","journal-title":"Math. Probl. Eng."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"055012","DOI":"10.1088\/0964-1726\/22\/5\/055012","article-title":"A fiber Bragg grating sensor for detection of liquid water in concrete structures","volume":"22","author":"Ho","year":"2013","journal-title":"Smart Mater. Struct."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"144","DOI":"10.1016\/j.jlp.2014.08.003","article-title":"Experimental study of leakage detection of natural gas pipeline using FBG based strain sensor and least square support vector machine","volume":"32","author":"Hou","year":"2014","journal-title":"J. Loss Prev. Process. Ind."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"115020","DOI":"10.1088\/0964-1726\/24\/11\/115020","article-title":"Crack detection and leakage monitoring on reinforced concrete pipe","volume":"24","author":"Feng","year":"2015","journal-title":"Smart Mater. Struct."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"907","DOI":"10.1260\/1369-4332.15.6.907","article-title":"FBG sensors encapsulated into 7-wire steel strand for tension monitoring of a prestressing tendon","volume":"15","author":"Kim","year":"2012","journal-title":"Adv. Struct. Eng."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1060","DOI":"10.3390\/s150101060","article-title":"A Sensor-Type PC Strand with an Embedded FBG Sensor for Monitoring Prestress Forces","volume":"15","author":"Kim","year":"2015","journal-title":"Sensors"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Cho, K., Kim, S.T., Cho, J.R., and Park, Y.H. (2017). Estimation of tendon force distribution in prestressed concrete girders using smart strand. Appl. Sci., 7.","DOI":"10.3390\/app7121319"},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Shin, K.J., Lee, S.C., Kim, Y.Y., Kim, J.M., and Park, S. (2017). Construction condition and damage monitoring of post-Tensioned PSC girders using embedded sensors. Sensors, 17.","DOI":"10.3390\/s17081843"},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Kim, J.M., Kim, C.M., Choi, S.Y., and Lee, B.Y. (2017). Enhanced strain measurement range of an FBG sensor embedded in seven-wire steel strands. Sensors, 17.","DOI":"10.3390\/s17071654"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1901","DOI":"10.1177\/1045389X09347021","article-title":"A smart steel strand for the evaluation of prestress loss distribution in post-tensioned concrete structures","volume":"20","author":"Zhou","year":"2009","journal-title":"J. Intell. Mater. Syst. Struct."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"5380","DOI":"10.3390\/s120505380","article-title":"Full-scale prestress loss monitoring of damaged RC structures using distributed optical fiber sensing technology","volume":"12","author":"Lan","year":"2012","journal-title":"Sensors"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1177\/1475921708089745","article-title":"Performance evaluation of BOTDR-based distributed fiber optic sensors for crack monitoring","volume":"7","author":"Zhang","year":"2008","journal-title":"Struct. Health Monit."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"414692","DOI":"10.1155\/2012\/414692","article-title":"Performance Evaluation of PPP-BOTDA-Based Distributed Optical Fiber Sensors","volume":"2012","author":"Zhang","year":"2012","journal-title":"Int. J. Distrib. Sens. Netw."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"095051","DOI":"10.1088\/0964-1726\/25\/9\/095051","article-title":"First-time demonstration of measuring concrete prestress levels with metal packaged fibre optic sensors","volume":"25","author":"Mckeeman","year":"2016","journal-title":"Smart Mater. Struct."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/j.nucengdes.2013.12.038","article-title":"High Stress monitoring of prestressing tendons in nuclear concrete vessels using fiber optic sensors","volume":"268","author":"Perry","year":"2014","journal-title":"Nucl. Eng. Des."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"396","DOI":"10.1016\/j.ijadhadh.2008.07.010","article-title":"A modified creep model of epoxy adhesive at ambient temperature","volume":"29","author":"Majda","year":"2009","journal-title":"Int. J. Adhes. Adhes."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1117\/12.581484","article-title":"The Experimental evaluation of FBG sensor for strain measurement of prestressed steel strand","volume":"Volume 5649","author":"Li","year":"2005","journal-title":"SPIE Smart Structures, Devices, and Systems II"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"133","DOI":"10.1177\/1475921706072078","article-title":"Development of distributed long-gage fiber optic sensing system for structural health monitoring","volume":"6","author":"Li","year":"2007","journal-title":"Struct. Health Monit."},{"key":"ref_43","unstructured":"Wu, Z. (2013). Durability Study of Fiber Bragg Grating Strain Sensor Packaged with Fiber in Structural Health Monitoring. [Master\u2019s Thesis, Southeast University]."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1177\/1045389X11430743","article-title":"Investigation on the damage identification of bridges using distributed long-gauge dynamic macrostrain response under ambient excitation","volume":"23","author":"Hong","year":"2012","journal-title":"J. Intell. Mater. Syst. Struct."},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Wang, T., and Tang, Y.S. (2017). Dynamic displacement monitoring of flexural structures with distributed long-gage macro-strain sensors. Adv. Mech. Eng., 9.","DOI":"10.1177\/1687814017698885"},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Tang, Y.S., and Ren, Z.D. (2017). Dynamic Method of Neutral Axis Position Determination and Damage Identification with Distributed Long-Gauge FBG Sensors. Sensors, 17.","DOI":"10.3390\/s17020411"},{"key":"ref_47","unstructured":"Ministry of Housing and Urban-Rural Development of the People\u2019s Republic of China (2016). Code for Design of Prestressed Concrete Structures."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/12\/4106\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:31:44Z","timestamp":1760196704000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/12\/4106"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,11,23]]},"references-count":47,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2018,12]]}},"alternative-id":["s18124106"],"URL":"https:\/\/doi.org\/10.3390\/s18124106","relation":{"has-preprint":[{"id-type":"doi","id":"10.20944\/preprints201811.0006.v1","asserted-by":"object"}]},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,11,23]]}}}