现浇混凝土楼板荷载试验分析

Load Test of Reinforced Concrete Floor

在钢筋混凝土框架结构中,楼板作为一个受力构件,一旦结构出现贯通裂缝,将给结构的使用安全带来威胁,因此,对损伤楼板进行安全性检测显得尤为重要。以福建省某框架结构为例,采用现场堆沙袋对楼板进行荷载试验,结合相关规范,对损伤楼板安全使用性能进行分析及评估。研究结果表明,损伤楼板正常使用状态及承载力极限状态楼板变形及裂缝均满足规范要求,检验楼板满足结构安全使用性能要求。在实际工程中,楼板出现了贯通裂缝,需对其安全性进行检验时,可采用荷载试验对其进行安全性评估。

In the reinforced concrete frame structure,the floor acts as a force-bearing member.Once the structure has a through-crack,it will pose a threat to the safety of the structure.Therefore,it is particularly important to carry out safety inspection on the damaged floor.Taking a frame structure in Fujian Province as an example,the load test of the floor is carried out by using the sandbags on site,and the safety performance of the damaged floor is analyzed and evaluated in combination with the regulations.The research results show that the deformation and cracks of the damaged floor meet the requirements of the specification under normal use condition and bearing capacity limit state,and the inspection of the floor meets the structural safety performance requirements.In the actual project,it is necessary to test the safety of floor when a through-crack in the floor,the load test can be used to evaluate the safety.