Experimental monitoring of the strengthening construction of a segmental box girder bridge and field testing of external prestressing tendons anchorage

doi:10.1007/s11709-012-0140-3

Front Struc Civil Eng

2012, Vol. 6

Issue (3) : 308-320 https://doi.org/10.1007/s11709-012-0140-3

RESEARCH ARTICLE

Experimental monitoring of the strengthening construction of a segmental box girder bridge and field testing of external prestressing tendons anchorage

Ali Fadhil NASER(

), Zonglin WANG

School of Transportation Science and Engineering, Bridge and Tunnel Engineering, Harbin Institute of Technology, Harbin 150090, China

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Abstract

Prestressed concrete segmental box girder bridges are composed of short concrete segments that are either precast or cast in situ and then joined together by longitudinally post-tensioning internal, external, or mixed tendons. The objectives of this study are to monitor the construction process of the external prestressing tendons to strengthen the bridge structure and perform a field load test to measure the strain and the deflection of the anchorage devices of the external prestressing tendons to determine the state of these devices after tension forces are applied. The monitoring process of the external prestressing tendons construction includes inspecting the cracks in the diaphragm anchorage and the deviation block devices before the tension forces are applied to the external tendons; measuring the deformation of the steel deviation cross beam during the tension process; measuring the deformation of the box girder after different levels of tension forces are applied; measuring the elongation of the external tendons in each level of the tension; and measuring the natural frequency of the external tendons after the tension process is complete. The results of the monitoring process show that the measured values of the deformation, the elongation, and the natural frequency meet the requirements. Therefore, there is no damage during the construction and the tensioning of the external prestressing tendons. A field load test is performed to the anchorage beam, the steel deviation block devices, and the steel deviation cross beam. The field load test results of the anchorage devices show that the values of the strains, the stresses, and the deflection are less than the respective allowable limit values in the requirements. Therefore, the anchorage devices have sufficient strength, and the working state is good after the tension forces are applied to the external prestressing tendons.

Keywords prestressed concrete box girder monitoring external tendons strain deflection

Corresponding Author(s): NASER Ali Fadhil,Email:ali_hu73@yahoo.com

Issue Date: 05 September 2012

Cite this article:

Ali Fadhil NASER,Zonglin WANG. Experimental monitoring of the strengthening construction of a segmental box girder bridge and field testing of external prestressing tendons anchorage[J]. Front Struc Civil Eng, 2012, 6(3): 308-320.

URL:

https://academic.hep.com.cn/fsce/EN/10.1007/s11709-012-0140-3
https://academic.hep.com.cn/fsce/EN/Y2012/V6/I3/308

Fig.1 Longitudinal layout of the Sanguxian Bridge

Fig.2 View of the Sanguxian Bridge

Fig.3 Transverse section. (a) The span box girder; (b) the pier box girder/mm

Fig.4 External prestressing tendons near the pier box girder/mm

Fig.5 Steel deviation devices in the box girder/mm

Tab.1 Measured deformations of the steel deviation cross beam/mm

Tab.2 Measured deformations of the end anchorage of the steel deviation cross beam/mm

Fig.6 Locations of the deformation dial gauges on the cross beam. (a) At mid-span; (b) at end-span

Fig.7 Deformation of the end anchorage of the steel deviation cross beam. (a) Front view; (b) side view; (c) sketch of the end anchorage

Fig.8 Vertical deflections along the length of the bridge after the external prestressing tendons are tensioned

Tab.3 Measured elongation values of the external tendons/mm

Tab.4 Designed elongation values of the external tendons

Tab.5 Theoretical and measured frequencies of the external tendons

Fig.9 DH5922 dynamic data collection system

Fig.10 Measured frequency and acceleration of the external tendons

Fig.11 Sketch of the anchorage beam

Fig.12 Load test devices, including the strain and the deflection dial gauges/mm. (a) Isometric view; (b) side view

Fig.13 Dimensions of the steel I-shaped beam

Tab.6 Strains of the anchorage beam/μ?

Tab.7 Vertical deflections of the anchorage beam/mm

Fig.14 Steel deviation block structure/mm

Fig.15 Load test system. (a) Front view; (b) top view/mm

Fig.16 Dial gauge location

Tab.8 Strains of the steel deviation block structure

Tab.9 Deflection values of steel deviation block structure

Tab.10 Strains of the steel deviation cross bea/μ?

Tab.11 Deflections of the steel deviation cross beam (mm)

1	Rombach G. Precast segmental box girder bridges with external prestressing-design and construction. INSA Rennes, Hamburg-Harburg Technical University , 2002, 1–15
2	Jose A. Instrumentation system for post-tensioned segmental box girder bridges. Master dissertation , Austin: University of Texas, 1991
3	Guenter A. Dry joint behavior of hollow box girder segmental bridges. In: Fib Symposium, Segmental Construction in Concrete . New Delhi, 2004, 1–8
4	Vladimir K, Zdenek P, Milos Z, and Alena K. Box girder bridge deflections. ACI concrete international , 2006, 28 (1): 55–63
5	Naser E. Repair and strengthening of reinforced concrete structure. Toronto, Canada , 2005
6	Daly A. Strengthening of bridges using external post-tensioning. In: The 2nd Conference of Eastern Asia Society for Transportation Studies. Transport Research Laboratory, Seoul, Korea , 1997, 29–31
7	Wang H, Jin W, Cleland D J, Zhang A. Strengthening an in-service reinforcement concrete bridge with prestressed CFRP bar. Journal of Zhejiang University SCIENCE A , 2009, 10(5): 635–644 doi: 10.1631/jzus.A0820836
8	Dariusz F. Experimental investigation concerning strengthening of reinforced concrete bridge by mean of prestressed unbounded tendons. Warszawska, Cracow University of Technology, Civil Engineering Faculty, Institute of Building Materials and Structures , 2008, 31–155
9	Ali F, Wang Z. Damage Investigation, Strengthening, and Repair of Jilin Highway Double-Curved Arch Concrete Bridge in China. In: The 12th East Asia-Pacific Conference on Structural Engineering and Construction. Hong Kong , 2011, 2294–2300
10	Ali F, Wang Z. Monitoring of external prestressing tendons construction process of Jiamusi highway prestressed concrete bridge during strengthening in China. Advanced Materials Research, 2011, 163–167: 2873–2879
11	Thiru A, Tim H. Strengthening of bridge headstocks with external post-tensioning: design issues and strengthening techniques. In: Road System and Engineering Technology Forum . Queensland, Toowoomba, 2005, 1–9
12	Ahmed E, Sherif Y. Use of external pre-stressing to improve load capacity of continuous composite steel girders. In: Structure Congress, Structural Engineering and Public safety. ASCE, USA, 2006, 1–5
13	Sunthararadivel G, Thiru A. Overview of External Post-Tensioning in Bridges. In: Southern Engineering Conference, Toowooba QLD, Southern University , 2005, 1–10
14	Moravcik M, Dreveny I. Strengthening and verification of the prestressed road bridge using external prestressing. In: Alexander MG, Beushausen H D, Dehn F, et al, eds. Concrete Repair, Rehabilitation and Retrofitting II. London: Taylor & Francis Group , 2009, 1077–1080
15	Ng C, Tan K. Flexural behavior of externally prestressed beams. Part I: analytical model. Engineering Structures , 2006, 28(4): 609–621 doi: 10.1016/j.engstruct.2005.09.015
16	JTJ023–85. Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts. People’s Republic of China , 1985 (in Chinese)
17	Daly A. External post-tensioning. Concrete Engineering International , 1998, 2(3): 27–29

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