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对高性能水泥复合砂浆钢筋网薄层(HPFL)加固的钢筋混凝土(RC)偏压柱在槽型面高温和初始荷载共同作用下进行恒载升温、恒载恒温和恒载降温等高温过程试验。试验结果表明:当初始荷载作用在高温侧时,试验柱跨中挠度凸向低温面;当初始荷载作用在低温侧时,大偏压柱跨中挠度凸向高温面,而小偏压柱的跨中挠度凸向低温面;试验柱在高温过程中均无轴向变形;初始荷载和HPFL加固层能显著提高高温后试验柱的剩余承载力;高温后试验柱的延性明显降低。
High-performance cement composite mortar reinforced concrete (HPFL) reinforced concrete (RC) columns were subjected to high temperature process such as constant load temperature rise, constant load constant temperature and dead load cooling under the joint action of high temperature and initial load of groove surface . The experimental results show that when the initial load acts on the high temperature side, the mid-span deflection of the test column is convex towards the low temperature surface, and when the initial load acts on the low temperature side, the mid-span deflection of the large- The mid-span deflection is convex to the low temperature surface; the test column has no axial deformation during the high temperature process; the initial load and the HPFL reinforcement layer can significantly increase the residual bearing capacity of the test column after high temperature;