高层房屋现浇钢纤维混凝土梁柱节点抗震设计

摘要

梁柱节点梁端塑性铰范围是抗震设计的关键,将钢纤维加入该区域后,以普通混凝土梁柱节点为对照进行破坏过程、抗裂强度、抗剪强度及剪切延性的研究,结果表明钢纤维掺入梁柱节点塑性铰区域后,能提高梁柱节点的刚度、抗裂强度、抗剪强度及剪切延性,并提高整个梁柱节点的抗震性能.%Compared with the common concrete beam column joints,the steel fiber is incorporated into the plastic hinge at the end of the beam column joints,and the failure process,the crack strength,the shear strength and the shear ductility were researched.Results show that:After the steel fiber is incorporated into the plastic hinge region of the beam column joint,stiffness,crack resistance,shear strength and shear ductility are greatly improved.Finally,the seismic performance of beam column joints is improved effectively.