河北奥体中心体育场铰支桅杆式斜拉桁架结构的预应力张拉技术  

PRESTRESS TENSION TECHNOLOGY OF PIPE TRUSS STRUCTURE CABLE-STAYED BY HINGE-SUPPORT MAST IN HEBEI OLYMPIC SPORTS CENTER STADIUM

作　　者：吕品[1] 王洪洲[2] 徐瑞龙[1] 

机构地区：[1]北京市建筑工程研究院有限责任公司,北京100039 [2]金环建设集团有限公司,石家庄050000

出　　处：《工业建筑》2016年第2期107-112,共6页Industrial Construction

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.

关 键 词：斜拉结构 预应力拉索 铰支桅杆 施工技术 

分 类 号：TU758.11[建筑科学—建筑技术科学]