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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。
Diagonal trussed pipe truss structure has the advantages of lateral stability and torsional torsion of pipe trusses, but also has the advantages of small sagittal and long cantilever structure, which is widely used in large structures. After optimizing the supporting mast support to the hinge support, the mast-based component can be self-adaptive and the component material performance can be better utilized. The core of this type of structure prestressed construction technology lies in the application of prestressing control and structural deformation control. Through the simulation calculation, the construction control parameters were extracted, several prestressed construction schemes were optimized, the construction scheme with high safety, high construction accuracy and short construction period was selected, and the construction control parameters were reversely analyzed according to the monitoring data. Judge the construction accuracy.