Causes Analysis, Reinforcement and Repair Technology of Segment Crack and Damage During Shield Tunnelling Process: A Case Study

Autor:	Tang Qianlong, Cao Haorong, Peng Limin, Lei Mingfeng, Chen Fudong
Rok vydání:	2018
Předmět:	Computer simulation Computer science business.industry Process (computing) Soil Science Geology Structural engineering Geotechnical Engineering and Engineering Geology Water leakage Process safety Shield tunnelling Shield Architecture Reinforcement business Stress concentration
Zdroj:	Geotechnical and Geological Engineering. 37:765-773
ISSN:	1573-1529 0960-3182
DOI:	10.1007/s10706-018-0648-y
Popis:	Segment crack and damage is one of the most common diseases in shield construction. Based on a practical project, the cause of crack damage, the safety of the damaged segment structure and its relative repairing technology were studied concretely by means of field investigation, numerical simulation and construction monitoring. The results show that the soil erosion, caused by water leakage in the project, is the main reason for the stress concentration and local crack of shield segments. At the same time, after grouting reinforcement inside and outside the tunnel and local segments repairing, there are no new cracks appear and develop, the monitoring indicators also tends to be stable, the segment structure is safe, and can meet the needs of subsequent process safety construction. It can be seen that the reinforcement and repair measures taken are effective and can be referenced for similar situations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98e6b06be5eaaca55e428e38e04a2475 https://doi.org/10.1007/s10706-018-0648-y Zobrazit plný text záznamu Full text from SpringerLink