无黏结预应力混凝土开洞板的ANSYS分析  

ANSYS analysis of post-tensioned unbonded prestressed concrete board with opsen-hole

作　　者：金凌志[1] 陈敏[1] 曹霞[1] 万晓明[1] 

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004

出　　处：《混凝土》2011年第4期110-112,共3页Concrete

基　　金：广西自然科学基金项目(桂科自0832255);广西建筑工程检测与试验重点实验室基金项目(桂科能07109005-16)

摘　　要：由于无黏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。运用ANSYS软件对后张无黏结预应力混凝土开洞板试验模型在均布荷载作用下的挠度、裂缝、极限荷载等进行了模拟分析,并根据洞口位置的不同,对其进行受力性能及破坏机理的研究分析,将模拟分析结果与试验结果进行比较,表明ANSYS能较好地模拟无黏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。Owing to the outstanding advantages of unbonded prestressed technology,it has been widely used in high-rise building floor.However,with the continuous improvement of the function requirements of the building,the boards with openings become more and more common,not only in new constructions but also in renovation projects.These holes will change the mechanical properties of the original floor,and cause stress concentration around the holes easily.This article carries on the simulation analysis by modeling the experimental model using ANSYS software,focuses on the deflection,crack and ultimate load of unbonded post-tensioned prestressed concrete board with open-hole.After making the comparative analyses to the mechanical behavior and failure mechanism under the different locations of the holes,the simulation results are compared with experimental results,and then,shows that ANSYS can simulate the whole process of loading better,provides theoretical basis for its application and promotion in practical engineering.

关 键 词：无黏结预应力 开洞板 受力性能 ANSYS 模拟分析 

分 类 号：TU528.01[建筑科学—建筑技术科学]