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A platform for research: civil engineering, architecture and urbanism
Transformation method for improving anti-seismic property of reinforced concrete frame structure
The invention relates to the technical field of reinforced concrete frame construction, in particular to a transformation method for improving the anti-seismic property of a reinforced concrete frame structure, which comprises the following steps of: S1, slotting a web region, close to a reinforced concrete frame column, of a reinforced concrete frame beam, and reinforcing by using a fiber reinforced composite material; and S2, hoops are additionally arranged at the contact positions of the exposed longitudinal bars left after grooving and the concrete, so that the hoops wrap the exposed longitudinal bars and make contact with the concrete. The bending bearing capacity of the beam end is weakened in the mode that a groove is formed in the beam bottom to remove concrete of a beam web part, the fiber reinforced composite material is adopted for shear resistance reinforcement on the concrete weakening area, finally, the anchoring performance of the steel bars is improved through the additional hoops, and then the anti-seismic performance of the frame under the earthquake action is improved; and structural damage is changed from a column hinge damage mechanism to a beam hinge damage mechanism.
本发明涉及钢筋混凝土框架施工的技术领域，具体涉及一种提升钢筋混凝土框架结构抗震性能的改造方法，包括如下步骤：S1：对钢筋混凝土框架梁靠近钢筋混凝土框架柱的腹板区域进行开槽，并使用纤维增强复合材料加固；S2：在开槽后剩余的裸露纵筋与混凝土的接触位置附加环箍，使得环箍包裹裸露纵筋并与混凝土接触。本发明通过梁底开槽去掉梁腹板部分混凝土的方式来削弱梁端的抗弯承载力，并采用纤维增强复合材料对混凝土削弱区域进行抗剪加固，最后通过附加环箍增大钢筋的锚固性能，进而改进地震作用下框架的抗震性能，使结构的破坏从柱铰破坏机制转变为梁铰破坏机制。
Transformation method for improving anti-seismic property of reinforced concrete frame structure
The invention relates to the technical field of reinforced concrete frame construction, in particular to a transformation method for improving the anti-seismic property of a reinforced concrete frame structure, which comprises the following steps of: S1, slotting a web region, close to a reinforced concrete frame column, of a reinforced concrete frame beam, and reinforcing by using a fiber reinforced composite material; and S2, hoops are additionally arranged at the contact positions of the exposed longitudinal bars left after grooving and the concrete, so that the hoops wrap the exposed longitudinal bars and make contact with the concrete. The bending bearing capacity of the beam end is weakened in the mode that a groove is formed in the beam bottom to remove concrete of a beam web part, the fiber reinforced composite material is adopted for shear resistance reinforcement on the concrete weakening area, finally, the anchoring performance of the steel bars is improved through the additional hoops, and then the anti-seismic performance of the frame under the earthquake action is improved; and structural damage is changed from a column hinge damage mechanism to a beam hinge damage mechanism.
本发明涉及钢筋混凝土框架施工的技术领域，具体涉及一种提升钢筋混凝土框架结构抗震性能的改造方法，包括如下步骤：S1：对钢筋混凝土框架梁靠近钢筋混凝土框架柱的腹板区域进行开槽，并使用纤维增强复合材料加固；S2：在开槽后剩余的裸露纵筋与混凝土的接触位置附加环箍，使得环箍包裹裸露纵筋并与混凝土接触。本发明通过梁底开槽去掉梁腹板部分混凝土的方式来削弱梁端的抗弯承载力，并采用纤维增强复合材料对混凝土削弱区域进行抗剪加固，最后通过附加环箍增大钢筋的锚固性能，进而改进地震作用下框架的抗震性能，使结构的破坏从柱铰破坏机制转变为梁铰破坏机制。
Transformation method for improving anti-seismic property of reinforced concrete frame structure
一种提升钢筋混凝土框架结构抗震性能的改造方法
NIE XUEFEI (author) / ZHANG DONGDONG (author) / ZHANG SHISHUN (author)
2024-04-16
Patent
Electronic Resource
Chinese
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