中文摘要：

钢绞线（丝）网-聚合砂浆加固技术是一项新型加固工艺，具有耐火、耐腐蚀、耐老化等优点．在以往试验研究的基础上，采用换算截面法计算加固梁的等效刚度，推导出加固梁正常使用阶段在集中荷载作用下跨中挠度的计算公式，并通过46根加固梁的80组试验数据对其验证，吻合良好，结果可为实际工程加固设计提供参考，同时也为进一步研究加固梁的力学性能建立理论基础．

英文摘要：

Rehabilitation of reinforced concrete members with steel wire mesh and polymer mortar is a new method of structural strengthening with the advantages of resistance to fire, corrosion and ageing. Based on the existing test results, a theoretical expression of equivalent stiffness was put forward by using transformed section approach. Furthermore, a theoretical formula of mid-span deflection of strengthened beams in their serviceability limit states was proposed in this study. The formula was verified using 80 experimental test data of 46 strengthened beams, and good agreement was obtained. The results can be used as a basis for further study on mechanical properties of RC beams strengthened with steel wire mesh and polymer mortar.