Experimental study on oblique cracks of ceramsite aerated concrete block-filled walls under typhoon load in coastal area
In order to study the cracking reason of ceramsite aerated concrete block-filled wall under the condition of low seismic fortification intensity in coastal areas,PKPM software was used to analyze the interlayer displacement of a 13-story frame structure house under typhoon load and 6-degree seismic fortification intensity.The results show that the maximum interlayer displacement angle of the project is basically the same as that of 6-degree seismic fortification intensity under the basic wind pressure in this area.At the same time,a full-scale frame model test was carried out.The results show that when the main structure is still in the elastic stage,the overall stiffness of the model decreases sharply,and the infilled wall has cracked.When the displacement angle of the specimen reaches 1/1 092,the infilled wall cracks seriously,which is equivalent to the performance of the 13-story frame house case under the wind pressure of 1.27kN/m2 after the stiffness correction.Therefore,according to the current structural design parameters and construction measures,the cracking of ceramsite aerated concrete block-filled wall in coastal areas is inevitable.In order to avoid the occurrence of oblique cracks,new design methods and structural measures should be adopted in the design and construction stages.
NETL
NSTL
万方数据
维普
