大体积混凝土施工冷凝管降温方.pdf

高创中心大楼大体积承台混凝土施工降温方案山东正顺建设集团有限公司2012年 7 月 1 日大体积承台混凝土施工降温方案一、工程概况莱芜高新技术产业开发区高创中心大楼工程位于高新区汇源大街以北凤凰路以东，建筑面积 49097m2。冲击成孔混凝土灌注桩基础，桩承台厚度分别为1.2m、1.5m、1.7m。其承台为C40抗渗混凝土，较大承台混凝土浇筑总方量分别为235.01m3、384m3、130.56m3。所施工承台用混凝土强度等级较高，水泥用量较大，会因水泥水化热过大、混凝土内外温差过大而引起的温度裂缝，属大体积混凝土。在施工中除采取掺加高性能减水剂降低水胶比、掺加粉煤灰降低水泥用量等措施减少水化热外，还必须在混凝土内部布设冷凝管，确保大体积混凝土的施工质量。二、水管冷却排布法施工1、施工方法采用 32mm，壁厚2.5mm 钢管作冷凝水管，端头攻丝，并以弯管接头和直管接头连接。连接时应牢固，并缠好冷胶带防漏水，将冷凝管与钢筋固定牢固以防止混凝土灌注、捣固时影响造成失效。在冷凝管的进出水口各设置一道阀门，以控制进水的方向和流量。2、水管冷却的排列方式文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8水管冷却法的排列方式一般采用矩形和梅花型两种，本项目承台高度为1.7m 时采用两层矩形排列方式，详细尺寸见下图。冷凝管的间距层间0.7m，水平间距为1.2m，见附图。水管冷却方式通水示意图当承台厚度小于1.5m 以及当承台为三棵桩及以下时不安装冷凝水管，承台厚度为1.5m 时，冷凝水管按单层排列详细尺寸见下图：水管冷却的通水方式：冷凝管通水必须选派专人负责。混凝土灌注完毕表面初凝后即开始通冷却水，保证从进水口进入的水是冷水(常温水)，进出水口每8 小时交换一次，使得大体积混凝土内部温度比较均一，降低温度裂缝出现的可能性。出水口进水口文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L83.保温养护目的和作用保温养护是大体积混凝土施工又一重要环节，主要作用是：保证混凝土表面水份充足，避免出现塑性收缩裂缝；降低大体积混凝土浇筑块体的里外温差值以降低混凝土块体的自约束应力；降低大体积混凝土的降温速度，充分利用混凝土的抗拉强度，以提高混凝土块体承受外约束应力时的抗裂能力，达到防止或控制温度裂缝的目的。保温养护所用保温材料和方法塑料薄膜、草袋、棉毡等具有隔热保温的材料均可用作保温材料，但在实际施工环境中，根据工程需要，采用既经济又隔热保湿效果好的材料。本工程选用棉毡，在混凝土浇筑后即刻覆盖保温保湿，在混凝土初凝后，定时在棉毡上喷水，确保混凝土表面水份充足。冷凝水管继续通水时间为，直至冷凝管出水口的水降至常温后方可停止通水。文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 HM3U3D9J3Y1 ZT2A7K10V9L8文档编码:CZ4O10Q8X8F7 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