ANALYSIS OF UNBONDED PRESTRESSED TECHNIQUE IN CONTROLLING TEMPERATURE STRESS OF SUPER-LONG STRUCTURE
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摘要: 选取一典型超长结构,利用有限元软件ANSYS对该结构在直线无粘结预应力筋作用下的内力及变形进行分析,比较不同配筋形式的受力效应,并对结构在温度荷载、预应力作用下的内力进行分析,得到由温度应力控制的最优的无粘结筋布筋形式,即在柱上板带集中布筋并分段张拉预应力筋。结果可为类似工程提供参考。Abstract: Based a typical super-long structure, the internal force and deformation of the structure under the function of linear unbonded prestressed tendons are analyzed by ANSYS, and the effect of the distributed unbonded prestress on controlling super-long structure temperature stress is also taken, whose results prove that it is more reasonable to place prestressed tendons in floorslab strip under column which should be partly tensioned, which can provide experience for similar projects.
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Key words:
- super-long structure /
- temperature stress /
- unbonded prestress
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[2] 陈国栋,房贞政.预应力筋布筋形式对板结构性能的影响. 福州大学学报(自然科学版),1997,25(6):80-85 郑文忠.不同预应力筋布筋形式双向板的受力性能及承载力计算.土木工程学报,2002,35(6):48-52 [3] 邴 晓,王清湘.无粘结预应力双向板张拉损失. 大连理工大学学报,2000,40(6):747-751 [4] JGJ 92-2004 无粘结预应力混凝土结构技术规程
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