Abstract
Applying prestress is the key technique of the cable dome. However, it is difficult to ensure that designed prestress of cables have been exactly applied to the structure in the site due to the fact that various kinds of errors will be introduced during construction. Thus it is necessary to present an effective method to guide construction to avoid construction team regulate the real prestress of cables repeatedly. In the paper, sensitivity analysis method based on spearman rank-order correlation is presented and the random errors are simulated by Monte Carlo method to solve the manufacture error. The sensitivity of effect of bearing and cable length manufacture errors on structural performance is analyzed in a numerical model of cable dome with the diameter of 62m. A cable dome model with diameter of 6m is designed and experimented. The experiential results are mostly consistent with the theoretical ones, which prove that the analysis theory is correct and the control method is effective. At last, some suggestions are made for manufacture errors of cable dome.
Highlights
Cable dome, proposed by Geiger after extending Fuller’s ideas of tensegrity [1, 2], is a kind of prestressed space structure
The objective of this paper is to study the sensitivity of bars regulated on structural behaviors to determine the feasible bar to improve construction efficiency and maximum allowable manufacture errors
Manufacture errors analysis for cable dome are carried out using sensitivity analysis method based on spearman rank-order correlation
Summary
Cable dome, proposed by Geiger after extending Fuller’s ideas of tensegrity [1, 2], is a kind of prestressed space structure. The successful applications of cable dome in designing in the circular roof structures of the Gymnastics Arena (diameter 119.8 m) and the Fencing Arena (diameter 89.9 m) constructed for Seoul Olympics in 1988 [3]. It is the key issue to control the force of cables and induce designed value of prestress to the structure accurately. 1874-1495/11 distribution and the designed value due to existed construction errors. There is still a great difference between the real prestress and the designed value due to existing construction errors. The objective of this paper is to study the sensitivity of bars regulated on structural behaviors to determine the feasible bar to improve construction efficiency and maximum allowable manufacture errors. Some suggestions on construction errors are given out, which provide a reference for cable dome design and construction
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