张家界至花垣高速公路第 10 合同段20m 空心板梁后张法预应力张拉方案邵阳公路桥梁建设有限责任公司湖南省张花高速公路第 10 合同段目 录一、工程概述................................................................................................................11、概述..................................................................................................................12、适用范围..........................................................................................................1二、作业内容................................................................................................................1三、预应力张拉施工准备……………………………………………………………1 1、预应力材料、设备准备……………………………………………………12、张拉条件……………………………………………………………………。23、张拉组织机构及人员安排…………………………………………………。2四、质量标准及验收方法............................................................................................2五、后张法空心板梁预应力张拉工艺及质量控制流程图........................................3六、工艺及质量控制流程............................................................................................3（一）张拉操作步骤....................................................................................................4（二）工艺步序说明....................................................................................................41．预应力材料进场检验与保管..........................................................................42．钢绞线下料与编束..........................................................................................63．预应力筋穿束..................................................................................................74. 安装锚具及夹片................................................................................................75．千斤顶的定位.................................................................................................
