科技创新与生产力
科技創新與生產力
과기창신여생산력
SCI-TECH INNOVATION & PRODUCTIVITY
2014年
2期
77-80,84
,共5页
大体积混凝土%温度控制%施工方案%数值分析
大體積混凝土%溫度控製%施工方案%數值分析
대체적혼응토%온도공제%시공방안%수치분석
mass concrete%temperature control%construction scheme%numerical analysis
渡槽工程为南水北调工程的一个重要环节,由于渡槽薄壁结构的特点,其混凝土裂缝控制变得尤为重要。为了更好地指导生产,避免工程出现质量问题,需要结合实际施工过程,对大体积混凝土及裂缝需要严格控制的渡槽工程进行施工过程的水化热仿真分析,研究裂缝的机理及产生的原因。对采取保温、通水冷却、浇筑时间及拆模时间等防裂措施进行探讨,有针对性地提出行之有效的温控防裂方案和措施,提高工程质量,指导了工程施工,达到渡槽混凝土施工期防裂的目的。
渡槽工程為南水北調工程的一箇重要環節,由于渡槽薄壁結構的特點,其混凝土裂縫控製變得尤為重要。為瞭更好地指導生產,避免工程齣現質量問題,需要結閤實際施工過程,對大體積混凝土及裂縫需要嚴格控製的渡槽工程進行施工過程的水化熱倣真分析,研究裂縫的機理及產生的原因。對採取保溫、通水冷卻、澆築時間及拆模時間等防裂措施進行探討,有針對性地提齣行之有效的溫控防裂方案和措施,提高工程質量,指導瞭工程施工,達到渡槽混凝土施工期防裂的目的。
도조공정위남수북조공정적일개중요배절,유우도조박벽결구적특점,기혼응토렬봉공제변득우위중요。위료경호지지도생산,피면공정출현질량문제,수요결합실제시공과정,대대체적혼응토급렬봉수요엄격공제적도조공정진행시공과정적수화열방진분석,연구렬봉적궤리급산생적원인。대채취보온、통수냉각、요축시간급탁모시간등방렬조시진행탐토,유침대성지제출행지유효적온공방렬방안화조시,제고공정질량,지도료공정시공,체도도조혼응토시공기방렬적목적。
Aqueduct engineering is an important link in the south-north water diversion project. The concrete crack control is particularly important because of the characteristic of the aqueduct thin-wall structure. In order to better preferably guide pro-duction and avoid quality problems of engineering, it was needed to analyze and research the mechanism of cracks and rea-sons by combining with the actual construction process strictly control the cracks in mass concrete and aqueduct project con-struction process of hydration heat simulation. Then, the paper was discussed taking heat preservation, water cooling, pouring and dismantles time and anti-cracking measures. Finally, the paper was purposefully put forward effective crack control scheme and measures, which improved the quality of engineering, guiding the project construction and achieved the an-ti-cracking goal of during the construction.