A common phenomenon in trenchless technology is the occurrence of voids in grouting. We investigate the impact of such voids on buckling of an encased liner under external pressure using a numerical solution of the nonlinear contact analysis method. The buckling behavior is clarified and the critical pressure is tested theoretically. An encased liner always fails in single-lobe buckling if there are no voids. Voids greatly change the behavior of the encased liner; as the void size increases, the buckling mode may switch from singlelobe buckling to free buckling of an arch even at an infinitely long pipe, and the buckling strength decreases sharply in stages.
|ホスト出版物のタイトル||Shell Structures: Theory and Applications - Proceedings of the 10th SSTA 2013 Conference|
|出版ステータス||Published - 2014|
|イベント||10th Jubilee Conference on "Shell Structures: Theory and Applications", SSTA 2013 - Gdansk|
継続期間: 2013 10月 16 → 2013 10月 18
|Other||10th Jubilee Conference on "Shell Structures: Theory and Applications", SSTA 2013|
|Period||13/10/16 → 13/10/18|
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