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对使用“直接增层法”进行加层改造的3层钢筋混凝土框架进行拟静力试验,在植筋过程中使用水泥基无机锚固材料。同时在相同试验条件下对整浇钢筋混凝土框架进行拟静力试验研究,并对试验结果进行对比分析。结果表明:使用无机锚固材料进行植筋加层的钢筋混凝土框架具有与整浇钢筋混凝土框架相近的承载能力,其延性要略低于整浇钢筋混凝土框架,但依然可以基本满足工程的抗震要求,在框架达到极限位移时,植筋加层钢筋混凝土框架在植筋节点区域上出现较为密集的交叉斜裂缝,需采用一定的加固方法对其进行补强处理,使其满足“强节点弱构件”的抗震要求。
Quasi-static tests were carried out on the three-story reinforced concrete frame reinforced by the method of “direct build-up method”, and cement-based inorganic anchoring materials were used in the planting of steel bars. At the same time, the pseudo-static test of the cast-in-situ reinforced concrete frame under the same test conditions is carried out, and the test results are compared and analyzed. The results show that the reinforced concrete frame with anchorage reinforcement is similar to the cast-in-place reinforced concrete frame, the ductility is slightly lower than the cast-in-place reinforced concrete frame, but can still meet the seismic requirements of the project, When the frame reaches the limit displacement, the tendon reinforced reinforced concrete frame appears more intensive cross diagonal cracks in the anchorage node area, and it must be strengthened by some reinforcement method to make it meet the weak member "Earthquake resistance requirements.