A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Retard-bonded prestress construction method for main tower inhaul cable anchoring area
The invention provides a retard-bonded prestressed construction method for a main tower stay cable anchoring area, which is characterized by sequentially comprising the following steps of: S1, cutting a retard-bonded prestressed steel strand with a preset length by using cutting equipment to meet the operation requirement of subsequent prestressed tension, and cutting the retard-bonded prestressed steel strand with the preset length to obtain a retard-bonded prestressed steel strand with the preset length; the cross section of the tensioning notch is small in size, the influence on the main tower is small, cutting of steel bars of the main tower is reduced, especially in a thin-wall high tower, large tensioning notches do not exist, therefore, the main bars of the main tower do not need to be broken, and the influence is extremely small; and the exposed part of the retard-bonded prestressed steel strand is short, so that the prestressed tensioning construction can be carried out in a limited prestressed tensioning space during high-altitude operation, the creeping formwork template does not need to be cut or dismantled during prestressed tensioning, the creeping formwork and the prestressed tensioning construction are not influenced, and the construction period is shortened.
本发明提供一种用于主塔拉索锚固区的缓粘结预应力施工方法，其特征在于：依次包括如下步骤：S1、通过切割设备切割预定长度的缓粘结预应力钢绞线，切割预定长度的缓粘结预应力钢绞线以满足后续预应力张拉的操作需求，张拉槽口的截面所需大小较小，对主塔的影响小，减少对主塔钢筋的切割，尤其在薄壁高塔中，不存在较大的张拉槽口，从而无需较多的打断主塔的主筋，造成的影响极小；且缓粘结预应力钢绞线外露较短，能够在高空作业期间且在有限的预应力张拉空间中进行预应力张拉施工，预应力张拉时无需切割或拆除爬模模板，不会影响爬模及预应力张拉施工，节约施工工期。
Retard-bonded prestress construction method for main tower inhaul cable anchoring area
The invention provides a retard-bonded prestressed construction method for a main tower stay cable anchoring area, which is characterized by sequentially comprising the following steps of: S1, cutting a retard-bonded prestressed steel strand with a preset length by using cutting equipment to meet the operation requirement of subsequent prestressed tension, and cutting the retard-bonded prestressed steel strand with the preset length to obtain a retard-bonded prestressed steel strand with the preset length; the cross section of the tensioning notch is small in size, the influence on the main tower is small, cutting of steel bars of the main tower is reduced, especially in a thin-wall high tower, large tensioning notches do not exist, therefore, the main bars of the main tower do not need to be broken, and the influence is extremely small; and the exposed part of the retard-bonded prestressed steel strand is short, so that the prestressed tensioning construction can be carried out in a limited prestressed tensioning space during high-altitude operation, the creeping formwork template does not need to be cut or dismantled during prestressed tensioning, the creeping formwork and the prestressed tensioning construction are not influenced, and the construction period is shortened.
本发明提供一种用于主塔拉索锚固区的缓粘结预应力施工方法，其特征在于：依次包括如下步骤：S1、通过切割设备切割预定长度的缓粘结预应力钢绞线，切割预定长度的缓粘结预应力钢绞线以满足后续预应力张拉的操作需求，张拉槽口的截面所需大小较小，对主塔的影响小，减少对主塔钢筋的切割，尤其在薄壁高塔中，不存在较大的张拉槽口，从而无需较多的打断主塔的主筋，造成的影响极小；且缓粘结预应力钢绞线外露较短，能够在高空作业期间且在有限的预应力张拉空间中进行预应力张拉施工，预应力张拉时无需切割或拆除爬模模板，不会影响爬模及预应力张拉施工，节约施工工期。
Retard-bonded prestress construction method for main tower inhaul cable anchoring area
一种用于主塔拉索锚固区的缓粘结预应力施工方法
MEI HUIHAO (author) / ZENG LIFEI (author) / GUO JINYONG (author) / ZHANG DECHANG (author) / PENG HAO (author) / LIU ZONGLE (author) / WANG FENGPEI (author) / ZHOU WENBIN (author)
2022-12-13
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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