1<span style="line-height:150%;font-family:宋体;font-size:16px;">⑴</span><span style="line-height:150%;font-family:宋体;font-size:16px;">冷却管与其下方的钢筋网片<strong><span style="font-size:24px;">15233770008李俊强0317-3175508</span></strong>和竖向的支撑钢筋绑扎或点焊牢固，冷却管如与墩身钢筋发生干扰可适当调整冷却管位置，如与承台钢筋发生干扰可适当调整钢筋位置。<span></span></span>
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<span style="line-height:150%;font-family:宋体;font-size:16px;">⑵</span><span style="line-height:150%;font-family:宋体;font-size:16px;">为减少施工期温度应力，在承台内埋设冷却水管，降低混凝土最高温升，同时设置测温孔。冷却管采用具有一定强度的内径为<span>50MM</span>，厚为<span>3MM</span>的铁皮管，两端攻丝，采用短节连接，隔一层生胶带以确保其密封性良好。<span><br />
<span> </span></span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑶</span><span style="line-height:150%;font-family:宋体;font-size:16px;"> </span><span style="line-height:150%;font-family:宋体;font-size:16px;">冷却管分两层设置，要求位置准确，安放稳固，<span><a href="http://wiki.zhulong.com/baike/detail.asp?t=接头" target="_blank"><span style="color:windowtext;text-decoration:none;"><span>接头</span></span></a></span>连接牢靠。每层冷却管进出水口均需引至承台顶以上<span>50CM</span>，当冷却管与钢筋相碰时，冷却管可适当调整位置。注意每层与钢筋牢固绑扎，管道畅通，丝口<span><a href="http://wiki.zhulong.com/baike/detail.asp?t=接头" target="_blank"><span style="color:windowtext;text-decoration:none;"><span>接头</span></span></a></span>牢靠，并通过通水试验，防止砼在浇注过程中出现冷却管漏水或堵塞现象；<span><br />
</span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑷</span><span style="line-height:150%;font-family:宋体;font-size:16px;">设置冷却管的该层混凝土自浇注开始，冷却管内须立即通入冷水，连续通水<span>6</span>天，流量应为<span>1.2m3/h</span>；<span><br />
<span> </span></span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑸</span><span style="line-height:150%;font-family:宋体;font-size:16px;"> </span><span style="line-height:150%;font-family:宋体;font-size:16px;">通水过程中对管道流量，进出水温度及混凝土内部温度均需隔<span>1</span>～<span>2</span>小时进行一次测量记录；<span><br />
<span> </span></span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑹</span><span style="line-height:150%;font-family:宋体;font-size:16px;">派专人测量混凝土温度，及时采取措施，控制混凝土表面温度与内部温度的差值小于<span>20°C</span>，以确保混凝土质量。经监理认可后，将冷却管<span><a href="http://wiki.zhulong.com/baike/detail.asp?t=灌浆" target="_blank"><span style="color:windowtext;text-decoration:none;"><span>灌浆</span></span></a></span>封孔，并将伸出承台顶面的管道截除。<span></span></span>
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<p style="text-indent:32px;">
<span style="line-height:150%;font-family:宋体;font-size:16px;">⑵</span><span style="line-height:150%;font-family:宋体;font-size:16px;">为减少施工期温度应力，在承台内埋设冷却水管，降低混凝土最高温升，同时设置测温孔。冷却管采用具有一定强度的内径为<span>50MM</span>，厚为<span>3MM</span>的铁皮管，两端攻丝，采用短节连接，隔一层生胶带以确保其密封性良好。<span><br />
<span> </span></span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑶</span><span style="line-height:150%;font-family:宋体;font-size:16px;"> </span><span style="line-height:150%;font-family:宋体;font-size:16px;">冷却管分两层设置，要求位置准确，安放稳固，<span><a href="http://wiki.zhulong.com/baike/detail.asp?t=接头" target="_blank"><span style="color:windowtext;text-decoration:none;"><span>接头</span></span></a></span>连接牢靠。每层冷却管进出水口均需引至承台顶以上<span>50CM</span>，当冷却管与钢筋相碰时，冷却管可适当调整位置。注意每层与钢筋牢固绑扎，管道畅通，丝口<span><a href="http://wiki.zhulong.com/baike/detail.asp?t=接头" target="_blank"><span style="color:windowtext;text-decoration:none;"><span>接头</span></span></a></span>牢靠，并通过通水试验，防止砼在浇注过程中出现冷却管漏水或堵塞现象；<span><br />
</span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑷</span><span style="line-height:150%;font-family:宋体;font-size:16px;">设置冷却管的该层混凝土自浇注开始，冷却管内须立即通入冷水，连续通水<span>6</span>天，流量应为<span>1.2m3/h</span>；<span><br />
<span> </span></span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑸</span><span style="line-height:150%;font-family:宋体;font-size:16px;"> </span><span style="line-height:150%;font-family:宋体;font-size:16px;">通水过程中对管道流量，进出水温度及混凝土内部温度均需隔<span>1</span>～<span>2</span>小时进行一次测量记录；<span><br />
<span> </span></span></span><span style="line-height:150%;font-family:宋体;font-size:16px;">⑹</span><span style="line-height:150%;font-family:宋体;font-size:16px;">派专人测量混凝土温度，及时采取措施，控制混凝土表面温度与内部温度的差值小于<span>20°C</span>，以确保混凝土质量。经监理认可后，将冷却管<span><a href="http://wiki.zhulong.com/baike/detail.asp?t=灌浆" target="_blank"><span style="color:windowtext;text-decoration:none;"><span>灌浆</span></span></a></span>封孔，并将伸出承台顶面的管道截除。<span></span></span>
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