Prefabricated Box Girder with Ultra High Performance Concrete
![Prefabricated Box Girder with Ultra High Performance Concrete](https://files.structurae.net/files/covers/10.2749/kualalumpur.2018.0744.jpg)
Auteur(s): |
Keli Xiao
(Southwest Jiaotong University, Chengdu, China)
Yanjun Jin (Southwest Jiaotong University, Chengdu, China) Lin Li (Southwest Jiaotong University, Chengdu, China) Wei He (Southwest Jiaotong University, Chengdu, China) Duan Xinlong (Southwest Jiaotong University, Chengdu, China) |
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Médium: | papier de conférence |
Langue(s): | anglais |
Conférence: | IABSE Conference: Engineering the Developing World, Kuala Lumpur, Malaysia, 25-27 April 2018 |
Publié dans: | IABSE Conference Kuala Lumpur 2018 |
Page(s): | 744-745 |
DOI: | 10.2749/kualalumpur.2018.0744 |
Abstrait: |
In order to solve traffic difficulty brought by the bridge construction in the city, and difficult transportation of beams, this paper puts forward the prefabricated-box-girder bicycle viaduct with ultra - high performance concrete (UHPC) through which will achieve light and thin beams, easy transportation and rapid construction. Based on the bicycle viaduct with 5.5m in width, this paper not only designs a prefabricated ribbed thin-walled box girder with 30m in span, including the detailed design of prefabricated segment stiffeners, shear connectors and external prestressing but also compares the UHPC box girder with ordinary concrete box girder and steel box girder. The research shows that with the application of UHPC in prefabricated viaduct in city, the ratio of height to span of beams and the slab thickness decrease to 1/30 and 10cm respectively, the dead weight is 50% lower than that of the ordinary concrete beams and the 3m long lifting weight is only 10 tons. Light and thin beams are suitable for transportation in city because of their low requirements for transportation and hoisting equipment. UHPC beams have no steel bars and own the advantages of dense texture, good durability, low maintenance costs, reflecting the concept of low carbon environmental protection and green bridge. |
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10562692 - Publié(e) le:
14.02.2021 - Modifié(e) le:
21.05.2021