螺栓灌胶节点对螺栓钢板加固钢筋混凝土连梁抗震能力影响的试验-《建筑科学与工程学报》

文章信息/Info

Title:: Experiment on Effects of Adhesive Bolt Connections on Seismic Performance of Reinforced Concrete Coupling Beams Strengthened by Bolt Steel Plate

Author(s):: CHENG Bei, SHI Cong, LEI Ting-wei; School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture

Keywords:: coupling beam; adhesive bolt connection; seismic performance; deformability

摘要:: 为了提高小跨高比既有连梁的抗震性能，提出了一种新型的螺栓钢板加固法和一种新型的钢板屈曲控制装置。按照1∶2比例制作3个钢筋混凝土连梁试件，通过低周往复荷载试验研究了螺栓灌胶节点对钢板加固钢筋混凝土连梁的影响。结果表明：未采用螺栓钢板法加固的连梁呈现出脆性剪切破坏；采用螺栓钢板法进行普通高强螺栓加固的连梁，其强度和延性并没有提高；采用螺栓钢板法进行螺栓灌胶节点加固的连梁，其强度、延性和耗能能力得到大幅度提高。

Abstract:: To improve the seismic performance of reinforced concrete(RC) coupling beams with low shear span ratio, a new bolt steel plate reinforcement method and a new steel plate buckling controlled device were proposed.Three RC coupling beams with the ratio of 1∶2 were made and low cyclic loading test was done to study the effects of adhesive bolt connections on the seismic performance of RC coupling beams. The results show that the RC coupling beam without being strengthened by bolt steel plate reinforcement method presents brittle shear failure. When the RC coupling beam is strengthened by bolt steel plate reinforcement method with common highstrength bolt connections, the ductility and strength of the beam is not increased obviously.When the RC coupling beam is strengthened by bolt steel plate reinforcement method with adhesive bolt connections, the strength, deformability and energy dissipation can be increased greatly.