UHPC单面无损加固历史建筑砌体墙技术研究

UHPC-based One-sided Nondestructive Strengthening of Historic Masonry Walls

历史建筑砌体墙的传统加固方法,存在损伤原结构、加固效果有限、加固层厚度较大等不足。基于超高性能混凝土UHPC的优异性能,提出了UHPC单面无损加固历史建筑砌体墙的技术。采用Midas Gen研究和分析了UHPC超薄无损加固历史建筑砌体墙的受力性能。分析表明,UHPC加固的砌体墙具有良好的承载能力和变形能力,在永久使用状态和地下空间开发导致的差异沉降下,均能够保证整体结构的安全,还能够有效减少加固面层的厚度,提高室内空间使用率。

Traditional strengthening methods of historic masonry walls can cause damages to original structures,have limited effects,and require thick layer.This paper proposed an Ultra-High Performance Concrete(UHPC)-based one-sided nondestructive strengthening method of historic masonry walls.The mechanic performance of historic masonry walls strengthened by UHPC is analyzed using Midas Gen.Result indicates that the strengthened historic masonry walls show sufficient bearing and deforming capacity to cope with permanent service loads and construction-induced differential settlements.By reducing the layer thickness,this method also provides a higher utilization rate of indoor space.