（1 国家林业局管理干部学院， 北京 102600； 2 中钢集团有限责任公司， 北京 100080；

3 中铁六局集团呼和浩特铁路建设有限公司， 呼和浩特 010050）

［摘要］大体积混凝土裂缝出现有多方面原因，主要原因是水泥水化热控制不当导致的。本文通过对北京市某住宅楼筏板式基础大体积混凝土施工实例分析，对大体积混凝土施工中水泥水化热、外界气温变化、混凝土的收缩等因素导致的混凝土出现裂缝有针对性地进行系统分析并提出了解决方案，在实际实施工程中得到较好应用，取得良好效果。

［关键词］大体积混凝土； 裂缝； 水化热； 温差； 配合比

中图分类号： TU471+.15 文献标识码： A文章编号：  1002-848X(2016)S1-0810-03

Discussion on construction crack control of mass concrete of the raft foundation

Zhao Xiaohuang1, Cheng Yuxia2, Cheng Yulin3

(1 State Academy of Forestry Administration, Beijing 102600, China; 2 Sinosteel Corporation, Beijing 100080, China;

3 China Railway Group Six Hohhot Railway Bureau Construction Co., Ltd.， Hohhot 010050, China )

Abstract： Mass concrete crack appeared has many reasons, main reasons for cement hydration hot control improper led to of, paper through on Beijing a engineering construction of residential floor raft plate based mass concrete construction instance, on mass concrete construction in the cement hydration hot, and outside temperatures changes, and concrete of contraction, factors led to of concrete appeared crack has targeted for system analysis and proposed has solution programme, in actual implementation engineering in the get better application, made good effect.

Keywords: mass concrete； crack； hydrated heat； range of temperature； combining scale