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Analysis Model for the Early Performance of in a Factory Immersed Tunnel Elements
(1 Department of Geotechnical Engineering, Tongji University, Shanghai 200092; 2 School of Materials Science and Engineering, Tongji University, Shanghai 200092; 3 Hong Kong-Zhuhai-Macao Bridge Authority, Zhuhai 519000)
Abstract Due to the effects of material properties, structural design, construction technology, etc., immersed tunnel elements are vulnerable to cracking at the early stage of prefabrication, which may be harmful to their serviceability and durability. In this paper, using the immersed tunnel of the Hong Kong-Zhuhai-Macao Bridge Project that is currently under construction as an example, an analysis model is established regarding the early-stage performance of immersed tunnel elements prefabricated in a factory and is verified by a full-scale test. Based on an analysis of the structural performance under the standard construction process, a development law is obtained for the early-stage performance of immersed tunnel segments, and the rationality of the crack-risk index is studied for controlling the early-stage cracking.
Abstract：
Due to the effects of material properties, structural design, construction technology, etc., immersed tunnel elements are vulnerable to cracking at the early stage of prefabrication, which may be harmful to their serviceability and durability. In this paper, using the immersed tunnel of the Hong Kong-Zhuhai-Macao Bridge Project that is currently under construction as an example, an analysis model is established regarding the early-stage performance of immersed tunnel elements prefabricated in a factory and is verified by a full-scale test. Based on an analysis of the structural performance under the standard construction process, a development law is obtained for the early-stage performance of immersed tunnel segments, and the rationality of the crack-risk index is studied for controlling the early-stage cracking.
LIU Xin-1,
LIU Xian-1,
JIANG Wei-2 etc
.Analysis Model for the Early Performance of in a Factory Immersed Tunnel Elements[J] MODERN TUNNELLING TECHNOLOGY, 2015,V52(1): 105-113
2015, Vol. 52 