【作者】 张丽伟；

【导师】 郭乐工；

【作者基本信息】 郑州大学 ， 结构工程， 2012， 硕士

【摘要】 预应力混凝土空心叠合楼板结合了现浇楼板和预制楼板的双重优点,具有良好的整体性,抗震性能优越,并且可以缩短工期、节约材料。叠合结构的研究是当前国际的一个重大趋势。混凝土叠合楼板的主要受力构件是在工厂预制,机械化程度高,专业技术熟练,构件质量好。而且预制构件的模板可重复使用,节约三材,并可以缩短工期。预制构件可采用预应力技术,减少钢材用量,并且可配合各截面受力情况,采用不同强度的材料。考虑到这种构件的优点,我们相信这种构件的使用必将会成为国际上一个大的趋势。本文在预应力叠合构件基础上,对预应力混凝土空心叠合楼板做了深入研究。通过预应力混凝土空心叠合板的简支试验,在对预应力混凝土空心板和预应力混凝土空心叠合板正常使用极限状态、承载能力极限状态、破坏标志及破坏特征进行全面的研究的基础上,深入研究叠合板叠合面的抗剪性能。本文对6块130mm厚的螺旋肋预应力混凝土空心楼板进行静力加载试验。通过对这6块130mm厚的螺旋肋预应力混凝土空心楼板的结构性能检验,论证了此种类型板做叠合板底板的可行性。对180mm厚预应力螺旋肋预应力混凝土叠合楼板进行静力加载试验,并对其进行结构性能检验。和130mm厚预应力螺旋肋钢筋混凝土空心板结构性能检验进行对比分析,发现叠合板的开裂荷载、极限荷载都较其底板有较大提高,结构性能合格,说明此种叠合板可用于工程实际中。采用有限元分析软件对预应力混凝土空心叠合板的试验模型进行模拟,并与试验结果进行对比分析。本文利用ANSYS分别分析了考虑叠合面滑移和不考虑叠合面滑移这两种情况下的试验模型。重点分析了螺旋肋预应力钢筋混凝土空心叠合板的受力性能、变形性能、裂缝开展、叠合面受力工作特性和抗剪承载力及影响因素,为进一步深入探讨其结构性能和用于实际工程中提供重要依据。对比两种模型的分析结果,论证了叠合面滑移对板承载力有不利影响。本文在螺旋肋预应力混凝土叠合板试验基础上,分析了叠合板叠合面的抗剪强度。叠合面裂缝的形成与发展和斜裂缝有直接关系,如果构件不出现斜裂缝,一般不会出现叠合面开裂破坏的情况。参照试验现象,提出一个和板跨度有关的叠合面抗剪强度计算公式。在工程中,应根据叠合板各项参数选取不同的叠合面处理方式。更多还原

【Abstract】 Prestressed concrete hollow composite floor slab combined with cast-in-situ floor and precast floor slab double merit, has the good team, the seismic performance is superior, and can shorten the construction period, saving material. The composite structure is the current international is a tendency. Concrete composite floor slab are the main stress components in factory prefabrication, high mechanization degree, specialized technical skill, good quality components. And prefabricated components template can be. duplicated, save three material, and can shorten the construction period. Prefabricated components can adopt prestressed technique, reduce the dosage of steel, and can be used with the force of each section, using different strength of the material. Considering the advantages of this component, we believe that this component will be the use of international a big trend. This paper in prestressed composite component basis, the prestressed concrete hollow slab do a thorough study superimposed.Through the analysis on these six pieces of130mm thick spiral ribs prestressed concrete hollow slab structure performance inspection, demonstrates this type superimposed slab floor boards of feasibility. For180mm thick prestressed spiral ribs prestressed concrete composite floor slab static loading test, and carries on the structure performance inspection. And130mm thick prestressed concrete hollow slab spiral ribs structure testing performance analysis, found the craze of laminated board load, limit load of the floor is increased greatly and the structure performance qualified, explain this composite plate can be used in engineering practice.Using the finite element analysis software for prestressed concrete hollow superimposed slab of simulated test model, and compared with the results of comparative analysis. In this paper are analyzed by using ANSYS consider composite surface sliding and don’t consider composite surface sliding the two cases of the experiment model. Analyses the spiral ribs prestressed concrete hollow composite board the mechanical properties, deformation performance, crack development, composite surface force working characteristic and the shear capacity and the influencing factors, and to further explore the structure performance, used in practical projects to provide important basis. Comparing the two kinds of model analysis results, demonstrates the composite surface slip on board bearing capacity have adverse impact.This paper in a spiral ribs prestressed concrete composite board test, based on the analysis of the composite superimposed slab shear strength. Composite surface crack formation and development and inclined cracks have immediate concern, if members do not appear inclined cracks, general won’t appear superimposed surface cracking destruction. With reference to test phenomenon, this paper puts forward a and the composite face plate span shear strength calculation formula. In engineering, according to the parameters should be superimposed slab choosing different of laminated face processing mode.更多还原