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| Analysis of the parameters infulencing the main-cable state of self-anchored suspension bridge |
| Received:September 13, 2013 Revised:November 09, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201406010 |
| KeyWord:bridge engineering self-arched suspension bridge main cable state parameter analysis |
| Author | Institution |
| 孙永明 |
哈尔滨工业大学 交通科学与工程学院, 哈尔滨 |
| 张连振 |
哈尔滨工业大学 交通科学与工程学院, 哈尔滨 |
| 李忠龙 |
哈尔滨工业大学 交通科学与工程学院, 哈尔滨 |
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| Abstract: |
| This paper makes a thorough affecting parameter analysis on the initial construction state and completion state of the self-anchored suspension bridge.Make the main cable curve,the horizontal component force and the action point of the resultant force of the main cable to the main saddle as the controlling target,the rational completion state of the main cable is defined;take the Wusong's bridge in the Jilin city as an example,the finite element mode of the main cable is created.Changing the model parameters,the initial construction state and the completion state of the main cable under different parameters are calculated,which are compared with the reference state,the affections of each parameter to the state of the cable are studied:main cable self-weight and the initial construction temperature have little effect on the state of the main cable;the length of the mid-span main cable mainly affects itself line-shape,while the length of the side-span main cable has big effect on each controlling target;make the initial construction line-shape as the controlling condition,the location deviation of the main saddle and back anchorage face,happens before constructing the main cable,has little effect on the completion state,but which will have great effect on the completion state if happens on the completion stage.Engineering example analysis results show that,the tensile stiffness of the main cable and the tensile force of the rod will have some effect on the completion state of the main cable,proposed that the tensile stiffness of the main cable and the weight of the normal beam should be tested before constructing the main cable,and the deviation should be control within the rational limits;recommended that the initial construction line-shape of the main cable should have pre-elevation,which could cancelate the deformation of the main saddle and the back anchorage face on the completion stage,this conclusion has a strong guiding significance and reference value on the work of constructing the main cable of the self-anchored suspension bridge. |
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