【摘要】 某实验楼的预应力混凝土梁张拉施工中,对预应力梁的反拱、钢绞线的应力和筒体的轴向压缩等进行了现场检测。通过工程实测结果和理论计算值的比较,全面分析了随着预应力的施加,影响钢铰线应力损失的设计和施工因素及筒体柱与预应力梁的相互作用。更多还原

【Abstract】 The reverse cove,the prestressed strand stress of the prestressed beam and the compressed deformation of the tube are tested on the spot.With the field survey result,the effect factors on the loss of the stand stess and the interaction between the prestressed beam and the tubeshaped column of the portal frame are analyzed with the increase of prestress.更多还原