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The application of steel-concrete-steel composite structures in immersed tunnels

The application of steel-concrete-steel composite structures in immersed tunnels
Autor(en): , , , ,
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Beitrag für IABSE Conference: Engineering the Developing World, Kuala Lumpur, Malaysia, 25-27 April 2018, veröffentlicht in , S. 845-852
DOI: 10.2749/kualalumpur.2018.0845
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The compartment steel-concrete-steel (CSCS) composite structures with longitudinal and transverse diaphragms and ribs own superiorities over traditional structural types and becomes a trend for meg...
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Bibliografische Angaben

Autor(en): (Key Lab. of Civil Engineering Safety and Durability of China Education Ministry, Dept. of Civil Engineering, Tsinghua University, Beijing, China 100084)
(Key Lab. of Civil Engineering Safety and Durability of China Education Ministry, Dept. of Civil Engineering, Tsinghua University, Beijing, China 100084)
(Key Lab. of Civil Engineering Safety and Durability of China Education Ministry, Dept. of Civil Engineering, Tsinghua University, Beijing, China 100084)
(Highway Bridges National Engineering Research Centre, CCCC Highway Consultants Co., Ltd., Beijing, China 100088)
(Highway Bridges National Engineering Research Centre, CCCC Highway Consultants Co., Ltd., Beijing, China 100088)
(Administration of Shenzhen-Zhongshan Passage, Guangzhou, China, 510600)
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Conference: Engineering the Developing World, Kuala Lumpur, Malaysia, 25-27 April 2018
Veröffentlicht in:
Seite(n): 845-852 Anzahl der Seiten (im PDF): 8
Seite(n): 845-852
Anzahl der Seiten (im PDF): 8
DOI: 10.2749/kualalumpur.2018.0845
Abstrakt:

The compartment steel-concrete-steel (CSCS) composite structures with longitudinal and transverse diaphragms and ribs own superiorities over traditional structural types and becomes a trend for mega immersed tunnels in the future. However, the investigations on the mechanisms of the out- of-plane performances of CSCS composite structures are rather limited. 3 bending tests and 3 shear tests were conducted and it is found that the current design method of bending has enough accuracy but the restrictions of rib spacing due to local buckling could be further relaxed. However, the current design method of shear cannot predict the shear resistance satisfactorily. Through theoretical analysis, a shear design method considering the combination of steel-concrete composite anti-shear mechanism and steel web anti-shear mechanism is proposed and verified, this method agrees well with the test and is suggested to be used in application.
Stichwörter:
Schubtragfähigkeit Absenktunnel