温塘河特大桥主拱拱座基础裂缝成因及防止措施

重庆交通大学学报（自然科学版） ›› 2007, Vol. 26 ›› Issue (3): 20-23.

温塘河特大桥主拱拱座基础裂缝成因及防止措施

胡继龙¹，王春梅²

1.重庆交通大学，重庆 400074；2.重庆高速公路发展公司垫利分公司，重庆 400060

收稿日期:2006-03-24 修回日期:2006-04-11 出版日期:2007-06-15 发布日期:2015-05-18
作者简介:胡继龙(1972—)，男，湖北阳山人，工程师，从事道路与铁道工程工作

Causes and Precaution for Concrete Cracks in Skewback Foundation of the Wentanghe Bridge

HU Ji-long ¹，WANG Chun-mei²

1.Chongqing Jiaotong University，Chongqing 400074，China；2.Chongqing Yulin Expressway Co.hd，Chongqing 4O0O6O，China

Received:2006-03-24 Revised:2006-04-11 Online:2007-06-15 Published:2015-05-18

摘要/Abstract

摘要： 大跨径拱桥拱座基础属于大体积砼结构工程，在浇筑过程中产生大量水化热，使砼体内与表面形成较大温差，产生热应力，从而导致砼体产生深度不等的裂缝．笔者以重庆渝邻高速公路温塘河特大桥拱座基础的施工技术为例，对大体积砼体内的温度应力进行了分析计算，并提出了防裂措施．

关键词: 大体积砼, 特大跨拱桥拱座基础, 温度裂缝, 防裂措施

Abstract: The skewback foundation of super large span arch bridge belongs to voluminous concrete structures，and a great deal of hydrated heat is generated during constructing，and a biggish diference in temperature between inside and outside of the concrete constructure is formed.Consequently，the diference intemperatures may lead to cracks due to thermal stress with diferent depths．Taking the construction techniques of skewback foundation of Wentanghe Bridge，a super large span arch bridge of Yulin Expressway in Chongqing，for example，the therm al stress and presented preventive measures and construction methods for the thermal cracks of mass concrete were analyzed and figured out.

Key words: voluminous concrete, skewback foundaion of super large span arch bridge, concrete cracks due to thermal stress, preventive measures for cracks

中图分类号:

U445.57

胡继龙，王春梅. 温塘河特大桥主拱拱座基础裂缝成因及防止措施[J]. 重庆交通大学学报（自然科学版）, 2007, 26(3): 20-23.

HU Ji-long ，WANG Chun-mei. Causes and Precaution for Concrete Cracks in Skewback Foundation of the Wentanghe Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(3): 20-23.

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