Abstract
Lining cracks are one of the most common diseases in highway tunnels, and the existence of lining cracks directly affects the overall stability and durability of tunnels, which has an important impact on the safe operation of tunnels, and it is necessary to analyze and study the characteristics of tunnel lining cracks. Combining with the detection data of multiple highway tunnels in the field, the different types of tunnel cracks are divided, and the classification numerical statistics method is used to obtain that the number and length of annular cracks in highway tunnel cracks are significantly higher than those of the other two kinds of cracks, and the longitudinal cracks in tunnel crack cracking degree are greater than the circumferential cracks and the inclinded cracks. The influence degree of cracks on the safety of tunnel structure longitudinal cracks are relatively the largest, the inclinded cracks are second only to longitudinal cracks, and the influence of cyclic cracks is relatively small. It provides reference for tunnel engineering design, construction, operation management and comprehensive improvement work.
Highlights
With the rapid development of expressway and more and more highway tunnel construction, tunnel diseases have become an important problem in tunnel engineering at present, and tunnel lining cracks, as a common disease phenomenon, will have adverse effects on the stress, waterproofing, appearance and so on of tunnel structures
Taking the highway tunnel detection of lining cracks in 13 provinces of Hangzhou city as the research object, the general law of Highway Tunnel cracks is analyzed by using the method of classification numerical statistics
This paper introduces the main causes of highway tunnel cracks and the classification of highway tunnel cracks
Summary
With the rapid development of expressway and more and more highway tunnel construction, tunnel diseases have become an important problem in tunnel engineering at present, and tunnel lining cracks, as a common disease phenomenon, will have adverse effects on the stress, waterproofing, appearance and so on of tunnel structures. In order to ensure the durability of the tunnel in operation and the safety and comfort during the driving process, it is an important problem to be solved to study the tunnel crack characteristics. Taking the highway tunnel detection of lining cracks in 13 provinces of Hangzhou city as the research object, the general law of Highway Tunnel cracks is analyzed by using the method of classification numerical statistics. The research focuses on the law of fracture distribution of different kinds of lining and its influence on the safety of tunnel structure
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