PRECISION CONTROL METHOD FOR PRE-STRESSING CONSTRUCTION OF SUSPEN-DOME STRUCTURES

A significant pre-stressing deviation from the pre-stressing target force is induced by the temperature change and sliding friction between hoop cables and cable-strut joints during the pre-stressing construction of suspen-dome structures. The deviation not only induces a considerable increase in member stress and nodal displacement but also reduces the load-bearing capacity of suspen-dome structures. To reduce this pre-stressing deviation, construction measures such as the use of a sufficient number of pre-stressing points, over pre-stressing construction, adoption of rolling cable-strut joints, and modification of the pre-stressing control value with temperature change were developed. A suspen-dome specimen with a diameter of 10.8 m was designed to clarify the aforementioned construction measures. Six schemes were designed and implemented based on this specimen. Finite element analysis was then conducted. Experimental and numerical results indicated that the construction measures presented in this paper could effectively reduce pre-stressing force deviation.

[1]  Zhihua Chen,et al.  Research on the Process of Pre-Stressing Construction of Suspen-Dome considering Temperature Effect , 2012 .

[2]  Q. Cao,et al.  STRUCTURAL DESIGN OF A PRACTICAL SUSPENDOME , 2008 .

[3]  Yang Lu-feng.  Construction Parameters and Process Simulation Method of Suspen-domes , 2010 .

[4]  X. Q. Cui,et al.  Influence of Gliding Cable Joint on Mechanical Behavior of Suspen-Dome Structures , 2004 .

[5]  Li Zhaoguang.  Static experimental study on the model of the suspend-dome of the badminton gymnasium for 2008 Olympic Games , 2007 .

[6]  Qing-shuai Cao,et al.  A simplified strategy for force finding analysis of suspendomes , 2010 .

[7]  Dahai Huang,et al.  Static behavior of Kiewitt6 suspendome , 2011 .

[8]  Wu Yingjun.  Design of roll cable-strut joint in suspendome and analysis of its application in whole structure system , 2010 .

[9]  I. Tatemichi,et al.  Design, tests and realization of suspen-dome system , 1999 .

[10]  Zhao Xiao.  Research on sliding cable in construction of suspend-dome structures , 2008 .

[11]  Hongbo Liu,et al.  Structural behavior of the suspen-dome structures and the cable dome structures with sliding cable joints , 2012 .

[12]  Heung-Fai Lam,et al.  Analysis and design of the general and outmost-ring stiffened suspen-dome structures , 2003 .

[13]  Qin Jie.  The prestress loss analysis of cable-strut joint of the badminton gymnasium for 2008 Olympic Games , 2007 .

[14]  Heung-Fai Lam,et al.  Factors affecting the design and construction of Lamella suspen-dome systems , 2005 .