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| Influence of effective prestress on ultimate bearing capacity for large-span prestressed concrete bridge |
| Received:December 27, 2011 Revised:March 16, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201303008 |
| KeyWord:large-span prestressed concrete bridge effective prestress ultimate bearing capacity |
| Author | Institution |
| 吴光宇 |
南昌大学建筑工程学院, 南昌 |
| 林伟 |
南昌大学建筑工程学院, 南昌 |
| 汪劲丰 |
浙江大学建筑工程学院, 杭州 |
| 贾益纲 |
南昌大学建筑工程学院, 南昌 |
| 项贻强 |
浙江大学建筑工程学院, 杭州 |
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| Abstract: |
| Based on degenerated three-dimension solid virtual laminated element theory,the influence of effective prestress on ultimate bearing capacity for large-span prestressed concrete bridge is explored.According to various level of effective prestress,the ultimate bearing capacity for a classical prestressed concrete continuous rigid frame bridge is spatial analyzed and discussed by three-dimension detailed finite element model.Analysis results show the influence of effective prestress on ultimate bearing capacity for large-span prestressed concrete bridge is great.Among them,the ratio of the effective prestress of longitudinal prestressing reinforcement and vertical prestressing reinforcement is the important factor that affect the ultimate bearing capacity of bridge.The structure design of large-span prestressed concrete bridge should think highly of the influence. |