Method for constructing precast coping through multi-phase strain

采用多级张拉的预制盖梁部的施工方法

Abstract

本发明涉及一种采用多级张拉的预制盖梁部的施工方法,该施工方法包括:主节块制作步骤,在当作墩组件的节块的上端层叠主节块,在所述主节块的设定位置上形成一排以上的第一横向套管;辅助节块制作步骤,通过以所述主节块的两侧面为模具的匹配制作方式制作辅助节块,在所述辅助节块上形成与所述主节块的第一横向套管对应的第二横向套管;纵向拉力导入步骤,在将所述主节块举起并层叠在当作墩组件的节块的上端后,通过插入在所述主节块的纵向套管内的纵向预应力筋导入纵向拉力;以及横向拉力导入步骤,在导入有纵向拉力的所述主节块的两侧面举起辅助节块并进行结合后,通过插入在所述第一横向套管和第二横向套管内的横向预应力筋导入横向拉力。
The invention relates to a method for constructing a cast coping part through multi-phase strain. The method comprises the steps of: manufacturing a primary segment block by forming more than one row of first lateral casings on a set position of the primary segment block when the primary segment blocks are superposed on the upper end of the blocks as the pier components, manufacturing an auxiliary segment block by matching with the dies on two sides of the primary segment block and forming second lateral casings corresponding to the first lateral casings on the auxiliary segment block, guiding the longitudinal tension through the longitudinal pre-stressed reinforcing steel in the longitudinal casings of the primary segment block after lifting and superposing the primary segment blocks on the upper end of the blocks as the pier components, and guiding the lateral tension through the lateral pre-stressed reinforcing steel in the inserted first and second lateral casings after lifting and combining the auxiliary segment blocks on two sides of the primary segment blocks having the guided longitudinal tension.

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