汶川震害中的结构混凝土问题  

Several problems about structure concrete of Wenchuan earthquake

作　　者：徐有邻[1] 巩耀娜[2] 

机构地区：[1]中国建筑科学研究院,北京100013 [2]建研凯勃建设工程咨询有限公司,北京100013

出　　处：《混凝土》2009年第10期1-4,9,共5页Concrete

摘　　要：通过对汶川震害调查分析,讨论了"豆腐渣"混凝土及其他结构混凝土质量问题;砖混结构中配筋混凝土的作用;围箍作用对提高柱子约束混凝土抗力的巨大潜力;以及结构混凝土实体强度的检测与验收问题。肯定了结构混凝土对结构安全的积极作用;指出围箍-约束作用可以大幅提高混凝土的抗力(强度及延性);对采用同条件养护强度进行施工质量验收进行讨论;并对今后结构混凝土的科研提出了建议。Based on the analysis of the collapse of Wenchuan earthquake, some quality problems about jerry-built concrete and other structural concrete, the effect of armored concrete about masonry structure, the great potential of increasing the confined concrete resistance of cohumns by constraint effect, and the check and acceptance of structure solid strength are discussed.In addition,it is indicated concrete plays an active part in the safety of the structure as well as the concrete resistance, such as strength and ductility, is improved a lot by constraint-restricts effect.Further- more,it is discussed the acceptance of construction quality by the curing strength under the same condition.Finally, some advice about scientific of structural concrete is proposed.

关 键 词：“豆腐渣”混凝土 围箍-约束作用 结构实体强度 

分 类 号：TU528.01[建筑科学—建筑技术科学]