无粘结预应力混凝土开洞板的ANSYS分析.pdfVIP

* 无粘结预应力混凝土开洞板的 ANSYS 分析 陈 敏 金凌志 万晓明 曹 霞 付 强 （桂林理工大学 土木与建筑工程学院 广西 桂林 541004） 摘 要：由于无粘结预应力技术的突出优点，已经广泛地应用于高层建筑楼板。但随着建筑物使用功能要求的不断 提高，楼板开洞无论在新建筑工程还是已有建筑的改造工程中越来越多见，这些洞口的存在往往会改变楼板原来的 力学性能，并且洞口的周围很容易出现应力集中。本文通过后张无粘结预应力混凝土开洞板在均布荷载作用下的静 载实验，进行其受力性能及破坏机理的研究分析，并根据洞口位置的不同，运用 ANSYS9.0 软件对实验模型的张拉 阶段及加载阶段的挠度、裂缝、极限荷载等进行了模拟分析，将模拟分析结果与实验结果进行比较，表明 ANSYS9.0 能较好地模拟无粘结预应力混凝土开洞板的受力全过程，为这种结构在实际工程中的应用和推广提供理论依据。 关键词：无粘结预应力；开洞板；受力性能；ANSYS ；模拟分析 UNBONDED POST-TENSIONED PRESTRESSED CONCRETE OPEN HOLE SLABS ANSYS ANALYSIS Chen Min Jin Lingzhi Wan Xiaoming Cao Xia Fu Qiang Abstract: Owing to the outstanding advantages of unbonded prestressed technology,it has been widely used in high-rise building floor. However, with the functional requirements of the building to use the continuous improvement. No matter what new construction or renovation project, the slab openings become more and more common. The existence of these holes will often change the mechanical properties of the original floor, and around the hole it is very vulnerable to stress concentration.In this paper,through unbonded post-tensioned prestressed concrete open hole slabs under uniform load static test,carry on mechanical behavior and failure mechanism analysis.According to the different location of the hole, using ANSYS9.0 software to unbonded post-tensioned prestressed concrete open hole slabs in tensioning and loading stage of deflection,cracks, ultimate load carry on simulation analysis. Compared the simulated results with the experimental results, the results show that ANSYS9.0 can better simulate the whole process of the force,and its applicatio