RESEARCH ON CONNECTION TECHNIQUE FOR BIDIRECTIONAL COMPOSITE FLOOR SLABS WITHOUT GAP
-
摘要: 提出一种双向受力叠合楼板新型密拼连接技术,并对相关节点构造进行足尺试验,与现浇楼板进行对比,研究新型连接构造的受力性能,包括破坏模式、承载力、刚度以及楼板的裂缝分布等。在此基础上,利用有限元计算的精细化分析,深入研究连接部位处钢筋与混凝土之间的传力机理。研究结果表明:新型密拼构造的受力性能基本等同现浇结构,数值计算与试验结果吻合较好,拼缝位置的封闭环形钢筋能有效传递结构内力。Abstract: A new type of connection technique for bidirectional composite floor slabs without gap was proposed. Full-scale tests on the construction of slabs' joints were carried out, and compared with cast-in-place slab. The mechanical properties of the new type of joint structure were studied, including the failure mode, bearing capacity, stiffness and crack distribution of floor slab. On the basis of the tests, a refined finite element analysis was performed, then the mechanism of force transfer between steel bar and concrete at the joint was deeply studied. The results showed that the mechanical properties of the new joint connected without gap was basically the same as that of the cast-in-place structure. The numerical calculation agreed well with the experimental results. The reinforcement at joint could effectively transfer structural internal force.
-
颜锋,高杰,田春雨,等.带接缝的混凝土叠合楼板足尺试验研究[J].建筑结构,2016,46(10):56-60. 叶献国, 华和贵, 徐天爽, 等. 叠合板拼接构造的试验研究[J]. 工业建筑, 2010, 40(1):59-63. 刘运林, 丁克伟, 叶献国,等. 叠合板增强型拼缝传力性能的试验研究[J]. 工业建筑, 2014, 44(5):43-46. 崔士起, 刘传卿, 刘文政,等. 分离式接缝叠合板垂直接缝方向抗弯刚度的试验及计算方法研究[J]. 建筑结构学报, 2018, 39(9):75-84. 蔡斌, 李波, 赵良龙. 钢筋混凝土叠合板受剪承载力可靠度分析[J]. 混凝土, 2017, 337(11):166-172. 中华人民共和国住房和城乡建设部.装配式混凝土结构技术规程:JGJ 1-2014[S]. 北京:中国建筑工业出版社, 2014. 中华人民共和国住房和城乡建设部.装配式混凝土结构连接节点构造:G310-1~2[S]. 北京:中国计划出版社, 2015. 翟伟, 张伟林, 沈小璞. 拼接叠合楼板抗弯性能研究[J]. 安徽建筑大学学报, 2015, 23(1):6-12. 王宏. 叠合式楼板钢筋应变的试验研究与分析[D].合肥:安徽建筑大学,2014. 姜海锋. 叠合式双向板抗裂性的试验[D]. 合肥:安徽建筑大学, 2014:26-27. 钱永梅, 邹超英, 尹新生.混凝土单向薄板叠合矩形板的双向受力效应试验研究[J]. 哈尔滨建筑大学学报, 2002, 35(3):30-34. 钱永梅, 邹超英, 尹新生. 混凝土单向薄板叠合成矩形板的双向受力性能分析[J]. 哈尔滨建筑大学学报, 2002, 35(1):38-42. YE X G, YANG K N, CHONG X. Experimental Study on Properties of Side Joint Between Superimposed Slabs with Lattice Steel Bars[J]. Advanced Materials Research, 2014, 638:109-114. JEONG Y J. Simplified Model to Predictpartial Interactive Structural Performance of Steel-Concrete Composite Slabs[J]. Journal of Construction Research, 2007, 64(2):238-246. 恽燕春, 陈鹏, 王柏生, 等. 密拼叠合楼板受力性能研究[J].施工技术, 2018, 47(12):75-79.
点击查看大图
计量
- 文章访问数: 164
- HTML全文浏览量: 4
- PDF下载量: 6
- 被引次数: 0