双面叠合装配式管廊侧墙面外抗震性能试验

Out-of-Plane Pseudo-Static Test on Double-Sided Laminated Side Wall of Utility Tunnel

摘要:

为研究采用螺旋箍筋套筒底节点连接的预制双面叠合式管廊侧墙在面外荷载作用下的受力变形性能，对2个采用该节点连接的足尺侧墙试件进行了不同轴压比下低周往复加载试验，并与对应2个现浇试件作对比，初步揭示了螺旋箍筋套筒底节点和竖向轴压比对管廊侧墙面外抗震受力变形性能的影响。试验结果表明：两种试件滞回曲线均较为饱满，具有良好的抗震耗能能力，满足装配式结构抗震变形设计要求；叠合装配试件上部区域剪切变形均高于现浇试件，且裂缝遍布整个墙体高度范围，具有良好的面外变形能力。

Abstract:

In order to study the mechanical deformation performance of prefabricated double-sided superimposed utility tunnel side wall connected by spiral stirrup sleeve bottom joint under out of plane load， two full-scale side wall specimens connected by this joint were tested under low cyclic reciprocating loading at different axial compression ratios， and compared with two cast-in-situ specimens， The effects of the bottom joint of the spiral stirrup sleeve and the vertical axial compression ratio on the seismic deformation performance of the side wall of the utility tunnel were preliminarily revealed. The test results show that the hysteretic curves of composite precast specimens and cast-in-situ specimens are relatively full， and have a good seismic energy dissipation capacity； which meet the seismic deformation design requirements of the fabricated structure； The shear deformation of the upper area of the composite assembly specimens are higher than that of the cast-in-situ specimens， and the cracks are all over the whole height range of the wall， which has good out of plane deformation ability