南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2009年
6期
288-289,293
,共3页
渡槽槽身%混凝土%防裂%研究%南水北调中线工程
渡槽槽身%混凝土%防裂%研究%南水北調中線工程
도조조신%혼응토%방렬%연구%남수북조중선공정
aqueduct%concrete%crack%studies%the Middle Route Project of the South-to-North Water Transfer
分析了南水北调中线干线工程漕河渡槽在工程施工初期槽身产生裂缝的原因,产生裂缝的原因为:混凝土内外温差大;混凝土自身结构约束及自重应力大;施工过程中混凝土养护不到位等.通过优化混凝土配合比、选用高效减水剂、优化骨料级配等技术手段控制渡槽槽身混凝土裂缝的产生.
分析瞭南水北調中線榦線工程漕河渡槽在工程施工初期槽身產生裂縫的原因,產生裂縫的原因為:混凝土內外溫差大;混凝土自身結構約束及自重應力大;施工過程中混凝土養護不到位等.通過優化混凝土配閤比、選用高效減水劑、優化骨料級配等技術手段控製渡槽槽身混凝土裂縫的產生.
분석료남수북조중선간선공정조하도조재공정시공초기조신산생렬봉적원인,산생렬봉적원인위:혼응토내외온차대;혼응토자신결구약속급자중응력대;시공과정중혼응토양호불도위등.통과우화혼응토배합비、선용고효감수제、우화골료급배등기술수단공제도조조신혼응토렬봉적산생.
The Caohe Aqueduct in the Middle Route Project of the South-to-North Water Diversion is the largest water aqueduct in China. In June 2005 on its early phase of construction the aqueduct began producing various degrees of cracks. In this paper,the causes of cracks wereanalyzed, some control measures taken were introduced.
