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A Full-Scale Experimental Study on the Performance of Jacking Prestressed Concrete Cylinder Pipe with Misalignment Angle

Conference paper

Abstract

The full-scale test of Jacking Prestressed Concrete Cylinder Pipe (JPCCP), a novel jacking pipe to be used in practical engineering, is conducted in this paper. The purpose of this work is to investigate the structural performance of JPCCP under axial jacking force without misalignment angle and eccentric jacking force with different misalignment angles, respectively. The experimental results indicate that misalignment of the pipeline is the major factor causing tensile strain which usually appears on the exterior reinforced concrete surface. In addition, both the maximum tensile and compressive axial strain increase with the misalignment angle. When the misalignment angle reaches 0.461°, the axial maximum strain is 106με which exceeds the tensile strain limit (100με), which indicates that the increase of section stiffness is required to resist the generation and propagation of the possible crack and protect the prestressed wire from potential erosion. Moreover, larger misalignment angle can not only reduce contact area between pipes ends, but also lead to a more serious stress concentration. As a result, the prestress near the concentrated region increases. The experimental results can provide a reliable reference for pipe design and construction.

Keywords

Full-scale test Misalignment angle Eccentric jacking force Prestressed wire JPCCP 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Disaster Reduction in Civil EngineeringTongji UniversityShanghaiChina
  2. 2.Department of Geotechnical EngineeringTongji UniversityShanghaiChina

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