摘要
斜拉管桁架结构具备管桁架的侧向稳定和抗扭优点,也具备斜拉结构矢高小、悬挑长度大的优点,在大型结构中得以广泛应用。将提供支撑的桅杆支座优化为铰接支座后,以桅杆为单元的构件可以达到自适应状态,更好地发挥构件材料性能。这种类型结构的预应力施工技术其核心在于施加预应力的控制和结构变形控制。通过仿真计算提取施工控制的参数,对几种预应力施工方案进行优选,选择安全性高、施工精度高、工期短的张拉方案进行施工,并根据监测数据反向对施工控制参数进行分析,判断施工精度。
The advantage of cable stay structure is for large-span cantilever and the advantage of pipe truss structure is anti-twisted ability and lateral stability. Based on both advantages of two kinds of structures, it has been used widely in the field of large span structure. The characteristics of materials were played fully when the mast was optimized to hinge-support. The key of prestress construction technology was force controlling and deformation controlling. According to the data from calculating, the reasonable scheme was chosen by security, accuracy and efficiency. On the other hand, the monitoring data could verify the calculating data.
出处
《工业建筑》
CSCD
北大核心
2016年第2期107-112,共6页
Industrial Construction
关键词
斜拉结构
预应力拉索
铰支桅杆
施工技术
cable-stayed structure
prestress cable
mast with hinge support
construction tenchnology
