【作者】 贺正全；

【导师】 白国良； 李斌；

【作者基本信息】 西安建筑科技大学 ， 建筑与土木工程， 2003， 硕士

【摘要】 本文首先回顾了国内外关于钢筋网水泥砂浆抗震加固的研究和发展现状。通过三片砖墙加固前后的试验，探讨了多层砖房墙体在循环水平荷载和垂直荷载共同作用下受力、变形及破坏形态。并通过砖墙加固前后的实验对比，分析了钢筋网水泥砂浆对墙体强度特性和变形特性的影响，阐述了该种加固措施对墙体抗弯强度和抗剪强度提高的不同效果。试验表明，经钢筋网水泥砂浆面层加固的墙体；在发生弯剪破坏时，极限水平荷载可以达到原墙抗剪强度的1.5倍以上，抗侧刚度可以达到原墙体的2倍以上，刚度的提高大于强度的提高。另外，一定高宽比的砖墙在竖向与水平荷载联合作用下，当弯剪破坏与剪切破坏的极限荷载比较接近时，其破坏形式具有不定性不能简单地以裂缝形式确定加固方案。最后，根据试验结果，结合工程实例，对某砌体结构的墙体进行了加固。更多还原

【Abstract】 In this paper , the researching and developing situation at home and abroad on cement mortar reinforced with steel mesh used in aseismic reinforcement are firstly reviewed .Based on experiments on three brick walls unstrengthened and strengthened , the forces , deformations and damaged patterns of walls bearing vertical and cyclic horizontal loads of multi-storey brick buildings are discussed . The effect of cement mortar reinforced with steel mesh upon the strength and deformation characters of walls are analyzed through comparing strengthened walls’ experiments with unstrengthened walls’ . It is set forth that the measure has different results on enhancing walls’ bend and shear strength . the test study of the brick wall cement mortar reinforced with steel mesh indicates : when the consolidated brick wall fail in bending-shear , its ultimatehorizontal load and drift stiffness respectively is 1.5 and 2 times bigger than that of brick wall. Besides , with stated heightand brendth ratio , acted on by horizontal and vertical load , the ultimateloads of wall failed in bending-shear is similar to one failed in shear. The walls crack form is indefinite . we can’t define consolidate menthod only by the crack from. In the end, based on test results and practice project, cracks of Masonry wall are strengthened .更多还原