CASE STUDY
Solution of inclinometer data processing for horizontal displacement: A case study of basement diaphragm wall monitoring in Vietnam
,
 
,
 
VU Ngoc Quang 2, B-C
 
 
 
More details
Hide details
1
Department of Geodesy and Geomatics Engineering, Hanoi University of Civil Engineering, 55 Giai Phong Road, 10000, Hanoi, Vietnam
 
2
Department of Planning and Urban Transport, University of Transport Technology, 54 Trieu Khuc Road, 10000, Hanoi, Vietnam
 
 
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
 
 
Submission date: 2023-09-15
 
 
Final revision date: 2023-12-12
 
 
Acceptance date: 2023-12-12
 
 
Publication date: 2023-12-29
 
 
Corresponding author
LUONG Ngoc Dung   

Department of Geodesy and Geomatics Engineering, Hanoi university of Civil Engineering, 55 Giai Phong, Hai Ba Trung, 10000, Hanoi, Viet Nam
 
 
Reports on Geodesy and Geoinformatics 2023;116:69-76
 
KEYWORDS
TOPICS
ABSTRACT
In the recent decade, Digitilt DataMate II and GK-604D inclinometer systems have commonly been used to evaluate horizontal displacement as well as to test the calculation models of basement diaphragm walls in Vietnam. The difference in the equipment constants as well as the calculation principle has confused the surveyors and even led to erroneous monitoring results. Furthermore, the use of commercial programs DigiPro2 and SiteMater, which are expensive, in inclinometer data processing requires a thorough understanding. Differences in calculation results between software occur due to the choice of the instrument constant, the rounding principle, or the choice of the reference point at the bottom of the monitoring pipe. In this paper, we summarize the calculation principles of Digitilt DataMate II and GK-604D inclinometer systems. To respond well to the data processing of inclinometer systems for basement diaphragm walls in Vietnam, we have developed the ICTool program that can efficiently calculate the observed data of the GK-604D system. The results of inclinometer data processing by the ICTool program are homogeneous in comparison with DigiPro2 and SiteMater software. In addition, the ICTool program was established to provide, free of charge, the communication of the monitoring of basement diaphragm wall displacement in Vietnam.
REFERENCES (23)
1.
Allil, R. C., Lima, L. A., Allil, A. S., and Werneck, M. M. (2021). FBG-based inclinometer for landslide monitoring in tailings dams. IEEE Sensors Journal, 21(15):16670–16680, doi:10.1109/JSEN.2021.3081025.
 
2.
Arroyo, M., Di Mariano, A., Monaco, P., Devincenzi, M., and Pérez, N. (2008). SDMT-based deep excavation design. In Huang, A. B. and Mayne, P. W., editors, Geotechnical and Geophysical Site Characterization, pages 967–973.
 
3.
ASTM D6230-13 (2013). Standard test method for monitoring ground movement using probe-type inclinometers – ASTM D6230-13. doi:10.1520/D6230-13.
 
4.
Deep Excavation (2021). Model GK-604D inclinometer readout – instruction manual. https://www.geokon.com/content....
 
5.
Deep Excavation (2023). SiteMaster – inclinometer data reduction software. www.geokon.com.
 
6.
Dung, L. N., Quynh, B. D., and Nghiem, N. D. J. (2020). Assessment of monitoring work of diaphgram wall by inclinometer in Viet-Nam. Tap chí Khoa hoc Công nghe Xây dung (KHCNXD)-ÐHXDHN, 14(2V):152–161, doi:10.31814/stce.nuce2020-14(2V)-14.
 
7.
Grodecki, M., Toś, C., and Pomierny, M. (2018). Excavation supported by diaphragm walls – inclinometric monitoring and numerical simulations. Technical Transactions, 115(5):129–140, doi:10.4467/2353737XCT.18.079.8561.
 
8.
Hsiung, B. and Hwang, R. (2009). Correction of inclinometer readings for movements at tips. Geotechnical Engineering, 40(2):39–48.
 
9.
Hwang, R. N. and Wong, L.-W. (2018). Effects of preloading of struts on retaining structures in deep excavations. Geotechnical Engineering, 49(2):104–114.
 
10.
ICTool (2023). ICTool program download link. doi:10.17605/OSF.IO/WPQCF.
 
11.
Liu, G. B., Jiang, R. J., Ng, C. W., and Hong, Y. (2011). Deformation characteristics of a 38 m deep excavation in soft clay. Canadian Geotechnical Journal, 48(12):1817–1828, doi:10.1139/t11-075.
 
12.
Mikkelsen, P. E. (2003). Advances in inclinometer data analysis. In Symposium on Field Measurements in Geomechanics, FMGM 2003, Oslo, Norway, September.
 
13.
Moffat, R., Parra, P., and Carrasco, M. (2019). Monitoring a 28.5 m high anchored pile wall in gravel using various methods. Sensors, 20(1):80, doi:10.3390/s20010080.
 
14.
Nguyen, V. and Luu, T. D. C. (2013). Influence of unloading soil modulus on horizontal deformation of diaphragm wall. In Proc., Int. Symp. on New Technologies for Urban Safety of Mega Cities in Asia, 0ctober 2013, Hanoi, Vietnam, pages 1247–1255.
 
15.
Pei, H., Zhang, F., and Zhang, S. (2021). Development of a novel Hall element inclinometer for slope displacement monitoring. Measurement, 181:109636, doi:10.1016/j.measurement.2021.109636.
 
16.
Pham, Q. K., Tran, N. D., Nguyen, T. K. T., and Pham, V. C. (2021). Research the integration of geodetic and geotechnical methods in monitoring the horizontal displacement of diaphragm walls. Inżynieria Mineralna, 1(2), doi:10.29227/IM-2021-02-30.
 
17.
Slope Indicator (2011). Digitilt inclinometer probe manual. Durham Geo-Enterprises, Inc. https://durhamgeo.com/pdf/manu....
 
18.
Slope Indicator (2013). DigiPro2 Inclinometer Software. DGSI. www.slopeindicator.com.
 
19.
Slope Indicator (2014). Digipro2 Manual. DGSI. https://durhamgeo.com/pdf/manu....
 
20.
Stark, T. D. and Choi, H. (2008). Slope inclinometers for landslides. Landslides, 5:339–350, doi:10.1007/s10346-008-0126-3.
 
21.
Teparaksa, W. and Teparaksa, J. (2019). Comparison of diaphragm wall movement prediction and field performance for different construction techniques. Underground Space, 4(3):225–234, doi:10.1016/j.undsp.2019.01.001.
 
22.
Van Tram, D. T., Oanh, N. C., et al. (2014). A case study of braced excavation using steel sheet pile wall in Thi Vai soft clay. Engineering and Technology, 4(1):48–60.
 
23.
Zhang, Y., Tang, H., Li, C., Lu, G., Cai, Y., Zhang, J., and Tan, F. (2018). Design and testing of a flexible inclinometer probe for model tests of landslide deep displacement measurement. Sensors, 18(1):224, doi:10.3390/s18010224.
 
eISSN:2391-8152
ISSN:2391-8365
Journals System - logo
Scroll to top