丁字销键拉结加固干砌条石墙抗震性能试验研究

干砌条石建筑是福建古建筑的重要形式之一，其结构整体性和抗震能力很差。提出了干砌条 石墙的丁字销键拉结抗震加固法。通过干砌条石墙加固试件的低周反复加载试验，研究了单、双面丁字 销键拉结加固法对干砌条石墙的破坏形态、水平极限承载能力、滞回曲线、骨架曲线、耗能性能等抗震性 能的影响。研究结果表明:丁字销键拉结加固方式能有效提高条石墙体的整体性；在水平往复荷载作用 下，墙体不易松散。它利用原有砌缝嵌入丁字销键及拉结钢筋，对墙面外观影响小，且可根据工程加固 升级改造的要求，在必要时进行拆卸而不破坏原有建筑结构。该方法在古建筑石结构抗震加固中具有 良好的推广前景。

The Experimental Study of the Seismic Performance of Embedding Horizontal Reinforcements with T-shape Anchors for Non-mortar Stone Walls

Constructions establishing on non-mortar stone walls are one of the important forms of historic buildings in Fujian Province,which have poor structural integrity and seismic capacity.This paper presents the seismic strengthening method of embedding horizontal reinforcements with T-shape anchors for non-mortar stone walls.The reversed horizontal cyclic loading tests were conducted for both single side and double side reinforced stone wall to research their failure modes,horizontal ultimate bearing capacity,hysteretic curves,skeleton curves,energy dissipation,such as seismic performance.The results show that the strengthening method of embedding horizontal reinforcements with T-shape anchors can effectively improve the integrity of stone walls and the wall is not easy to loose under horizontal reversed loading.This method embeds the T-shape anchors into the original gaps between stones,which has little effects to the appearance.According to reinforcement structure upgrade requirements,the installed reinforcement can be disassembled form the historical buildings without damaging the original structures.Therefore,this method meets the seismic strengthening requirements of historical stone structures and has good promotion prospects.