横向张拉预应力技术加固混凝土悬挑楼梯

为了研究横向预应力张拉技术在工程加固中的应用,通过在某住宅悬挑楼梯加固工程中的应用,研究了对被加固结构采用横向张拉施加预应力的原理,以及实现加固目标的施工工艺和质量控制方法。研究与实践结果表明,采用横向张拉预应力加固技术,锚固和节点处理简单,设备要求低,施工方法简便,便于在加固现场应用,特别适用于一些中小构件的加固。加固后结构能够满足安全性和耐久性要求,效果良好。

Vertical Tension Prestress-reinforcing Concrete Cantilevered Stairs

To study the vertical tension prestressing reinforcement in engineering applications,we probed into the practical application of reinforcement in cantilevered stairs of a residential project.The principles of vertical tension prestressing,and the construction technology and quality control methods therein are obtained.Researches and practice show that the vertical prestressing reinforcement technology,for its simpler anchor and node,lower equipment requirements and more convenient construction methods,is easier to apply at the spots of reinforcement,especially in small or medium-member reinforcement.The reinforced structure can meet the requirements of safety and durability with a good effect.