陶粒叠合层叠合板的承载能力研究  

Bearing Capacities of Ceramsite Concrete Composite Slabs with Trough Bottom Plate

作　　者：姜忻良[1] 岳建伟[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《四川大学学报（工程科学版）》2006年第6期6-12,共7页Journal of Sichuan University (Engineering Science Edition)

基　　金：建设部研究开发项目(02-2-511);天津市建委重大科技项目(2002-06)

摘　　要：不加支撑底板的受力性能及叠合面的抗剪切能力为无支撑叠合板应用的关键因素,为研究槽形底板和陶粒混凝土叠合层叠合板的受力性能及凹槽形叠合面的抗剪切能力,对3块底板和3块叠合板进行了的试验和理论分析,研究了底板和叠合板的抗弯承载力、抗裂性能、弹性恢复特性及叠合面的抗剪切能力。理论分析及试验结果表明:无支撑槽形底板和叠合板的实测抗弯承载力、抗裂性能均高于理论计算值,具有较好的弹性恢复特性;陶粒叠合层减轻了自重,凹槽形底板能够保证施工中不加支撑的要求;凹槽形叠合面比矩形叠合面具有更好的抗剪切性能和较好的抗弯刚度。最后,工程应用表明无支撑叠合板能够满足钢结构工程施工周期短的特点,具有较好的经济指标。The key points of ceramslte Concrete composite slabs without middle brace in construction are bearing capacities of trough bottom plates and shear strength of trough contact plane, which are important design parameters. To study bearing capacities of trough bottom plates and composite slabs and evaluate the shear strength of trough contact plane, three bottom plates and three composite slabs are tested and load-bearing capacities, crack resistance, elastic restoring capacities of bottom plates and composite slabs are analyzed. The test results and theoretical analysis show that the trough bottom plates and composite slabs have higher resistance to bending, crack resistance and elastic restoring capacities, and application of ceramsite concrete reduces dead load and ensure the feasibility of the trough bottom without brace in construction, in addition trough contact plane has higher shear strength than that of rectangle contact planes. Finally, the application of composite slabs without brace in steel construction has shorter period of construction and better economic indicator compared with cast-in-place concrete slab.

关 键 词：陶粒混凝土 槽形底板 叠合面 无支撑 抗裂性能 

分 类 号：TU378.8[建筑科学—结构工程]