Investigation on Construction Quality Indices for Concrete Box Girders
|
|
|||||||||||
Bibliografische Angaben
| Autor(en): |
Wen-Qing Wu
Feng Lin Jia-Jia Fu |
||||
|---|---|---|---|---|---|
| Medium: | Tagungsbeitrag | ||||
| Sprache(n): | Englisch | ||||
| Tagung: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Veröffentlicht in: | IABSE Symposium Venice 2010 | ||||
|
|||||
| Seite(n): | 606-607 | ||||
| Anzahl der Seiten (im PDF): | 7 | ||||
| Jahr: | 2010 | ||||
| DOI: | 10.2749/222137810796062923 | ||||
| Abstrakt: |
Based on three bridge dismantlement, two construction quality indices were investigated in-situ, which consisted of duct grouting compaction of prestressing tendons, excess concrete rate in box girder. The result indicated that the excess concrete rate in box-girders, varied between 10% to 20% and the concrete excess centred at the top slab and bottom slab. The duct for prestressing tendons were only partially grouted, with over 50% ungrouted for longitudinal tendons and over 70% ungrouted for transverse tendons. Obviously, this would increased the prestress loss in the tendons,and increased the possibility of structure cracking. It was helpful for realising the true performance of box-girders. |
||||
| Stichwörter: |
Brücke
|
||||