摘要
北京某小区地下停车库顶板为350mm厚无梁楼盖,使用荷载为29.5kN/m2。该顶板施工完成几个月后,出现由于温度收缩和干缩变形引起的裂缝。通过选取带裂缝楼板进行现场荷载试验,分析裂缝对楼板受力性能的影响,并结合理论计算,对开裂楼板的安全性进行论证。
The top floor of an underground parking garage in Beijing is flat slab,whose depth is 350mm and service load is 29.5kN/m^2.Cracks appear in some slabs after several months,which are caused by temperature and shrinkage of concrete.The field loading test of a slab with cracks is used for analyzing the influence of cracks on the slab mechanical property.In addition,the test proves safety of the slab by combining theoretical calculation with the test result.
出处
《工业建筑》
CSCD
北大核心
2008年第z1期1043-1044,1059,共3页
Industrial Construction
