轻骨料混凝土叠合板受力性能试验研究
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摘要
设计4种不同形式的叠合板,预制板和现浇部分都采用轻骨料混凝土。通过受弯性能试验,得到轻骨料混凝土预制板和叠合板的变形发展规律及破坏特征。基于试验现象和数据,分析试件在各级荷载下的承载性能、荷载-跨中挠度曲线及裂缝开展情况。结果表明:轻骨料混凝土预制板和叠合板结构性能良好。预制板与现浇混凝土之间有很好的黏结力,叠合面完全满足抗剪要求,为该类型叠合板的深入研究和工程实际应用提供参考。
Four different kinds of lightweight aggregate concrete superimposed slabs were designed. Its precast slab and cast-in-place part ware made of lightweight aggregate concrete. The development rule of deformation and the failure characteristics of lightweight aggregate concrete precast slab and superimposed slab ware are obtained by the bending test. Based on the experimental phenomena and data,the bearing capacity、load-mid span deflection curves and development of cracking were analyzed. Analysis results show that the properties of lightweight aggregate concrete precast slab and superimposed slab are good. The precast slab and cast-in-place part have a good cohesive force,and the composite surface completely meets the requirements of shear resistance,which provided a basis for the further investigation and engineering application of the slab.
Four different kinds of lightweight aggregate concrete superimposed slabs were designed. Its precast slab and cast-in-place part ware made of lightweight aggregate concrete. The development rule of deformation and the failure characteristics of lightweight aggregate concrete precast slab and superimposed slab ware are obtained by the bending test. Based on the experimental phenomena and data,the bearing capacity、load-mid span deflection curves and development of cracking were analyzed. Analysis results show that the properties of lightweight aggregate concrete precast slab and superimposed slab are good. The precast slab and cast-in-place part have a good cohesive force,and the composite surface completely meets the requirements of shear resistance,which provided a basis for the further investigation and engineering application of the slab.
引文
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[2]李杰,黄鹏飞,陈以一,等.无支撑钢筋桁架混凝土叠合板受力性能试验研究[J].结构工程师,2013(4):132-139.Li Jie,Huang Pengfei,Chen Yiyi,et al.Experimental research on mechanical properties of self-sustaining steel bar truss and concrete superposed slab[J].Structual Engineer,2013(4):132-139.(in Chinese)
[3]孙冰,曾晟,石建军.预应力轻骨料混凝土叠合板非线性有限元分析[J].水利与建筑工程学报,2006(2):34-36.Sun Bing,Zeng Sheng,Shi Jianjun.Nonlinear finite element analysis of lightweight concrete combined slab[J].Journal of Water Resources and Architectural Engineering,2006(2):34-36.(in Chinese)
[4]贾非,孙冰.预应力轻骨料混凝土叠合板正截面的力学性能[J].湘潭大学自然科学学报,2011(2):42-44.Jia Fei,Sun Bing.Test study of mechanical properties on pre-stress lightweight concrete composite[J].Natural Science Journal of Xiangtan Univemity,2011(2):42-44.(in Chinese)
[5]石建军,孙冰,周绍清,等.普通混凝土与轻骨料混凝土叠合面的粘结性能试验研究[J].水利与建筑工程学报,2005(1):24-26.Shi Jianjun,Sun Bing,Zhou Shaoqing,et al.Experimental research on bonding property of combined interface formed by common concrete and lightweight aggregate concrete[J].Journal of Water Resources and Architectural Engineering,2005(1):24-26.(in Chinese)
[6]中华人民共和国住房和城乡建设部.GB/T50152—2012混凝土结构试验方法标准[S].北京:中国建筑工业出版社,2012.Ministry of Housing and Urban Development of the People's Republic of China.GB/T50152—2012Standard methods for testing of concrete structures[S].Beijing:China Architecture and Building Press,2012.(in Chinese)
[7]高丹盈,张普,张长辉.纤维增强复合材料加固钢筋混凝土单向板受弯性能研究[J].建筑结构学报,2015(7):51-58.Gao Danying,Zhang Pu,Zhang Changhui.Flexural performance of reinforced concrete one-way slabs strengthened with fiber reinforced polymer sheets[J].Journal of Building Structures,2015(7):51-58.(in Chinese)
[8]朱永明,高歌,肖建庄.再生混凝土叠合板受弯力学性能试验[J].混凝土与水泥制品,2012(6):49-52.Zhu Yongming,Gao Ge,Xiao Jianzhuang.Experimental Study on flexural performance of the recycled concrete superimposed slab[J].China Concrete and Cement Products,2012(6):49-52.(in Chinese)