Year: 2025
Type: article
Abstract: Clamp repair is a primary method for defective pipe rehabilitation, but the application of repair clamps can conversely affect the safety of the defective pipe. This study presents an optimized repair clamp structure for a defective pipe with diameter of 219 mm through finite element analysis and experimental validation, with a consideration of the sealing performance of clamp. The sealing capability is first verified by contact pressure analysis. When the medium pressure increased from 5 MPa to 20 MPa, the sealing contact pressure correspondingly rose from 11.6 MPa to 27.2 MPa, consistently exceeding the medium pressure. A sensitivity analysis of the maximum safe pressure of defective pipe is then conducted, evaluating critical parameters including defect dimensions, clamp installation distance, and applied pressure range. To ensure safe pipe operation, the recommended optimal installation distance is approximately 40 mm. A hydrostatic pressure test is performed for final validation. Results confirmed the clamp’s robust sealing performance, enabling defective pipe to operate normally at 7.5 MPa medium pressure.
Source: Applied Sciences
DOI: 10.3390/app15169019
Authors: Jiajun Feng, Xinjie Suo, Xiaoling Liao, Hong Wang, Linming Xia, Yuxuan Song, Yuebing Li
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
Award: G6381382609
OpenAlex ID: W4413416866