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对某钢筋混凝土框架核心筒结构体系的楼盖进行了研究.该楼盖采用石膏为模盒的钢筋混凝土密肋空腔井字大板楼盖体系,取该楼盖跨度为8.4m,宽度为8.4m的部分现场进行了均布竖向荷载下的加载试验.以百分表为位移测量工具共布置了27个测点,采用红砖和水泥砖分四级对该楼盖部分进行了加荷,考察了其在最大使用荷载下的挠度,并与有限元法和等代井字梁法的计算挠度进行了对比分析.试验结果表明:以石膏为填充的密肋空腔井字大板具有较强的空间作用;实测挠度值和Ansys分析结果基本一致,且远小于等代井字梁法的计算挠度值;有限元法和等代井字梁法计算的板的挠度变化趋势和试验结果比较吻合.该试验结果可为今后该类大板体系的设计、研究和应用提供参考.
The floor of a reinforced concrete frame core tube structure system was researched.The gypsum was used as the mold box reinforced concrete dense rib hollow well plate floor system with the span of 8.4m and the width of 8.4m part of the site were loaded under uniform vertical load test with a dial indicator for the displacement measurement tools were arranged a total of 27 measuring points, the use of red brick and cement brick in four parts of the floor was added The deflection under the maximum service load was investigated and compared with the calculated deflection of the finite element method and the equivalent beam method.The test results show that the gypsum-filled, And the results of Ansys analysis are basically the same, which are far less than the calculated deflection values of the equivalent beam method. The trend and experiment of the deflection of the plate calculated by the finite element method and the equivalent well beam method The results are in good agreement.The results of this test can provide references for the design, research and application of such slab systems in the future.