Prediction Research of Long-term Creep for Bridge Concrete Based on Short-term Test

Journal of Chongqing Jiaotong University(Natural Science) ›› 2010, Vol. 29 ›› Issue (4): 518-520.

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Prediction Research of Long-term Creep for Bridge Concrete Based on Short-term Test

XU Hang¹, PENG Xiao-ming¹ , ZOU Li-qun²

1.CCCC Highway Consultants Co., Ltd., Beijing 100088, China; 2.School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, China

Received:2010-05-19 Revised:2010-06-13 Online:2010-08-15 Published:2015-01-22

基于短期试验的桥梁混凝土长期徐变预测研究

许航¹, 彭小明¹, 邹立群²

1.中交公路规划设计院有限公司, 北京 100088; 2.北京交通大学土木建筑工程学院, 北京 100044

作者简介:许航(1970—),男,四川成都人,高级工程师,主要研究方向:混凝土结构长期变形分析。E-mail:hangshoo@vip.sina.com。
基金资助:
国家高技术研究发展计划(863计划)项目(2008AA11Z102)

Abstract

Abstract: With the concept of BP-KX model for creep, a modified formula for computing creep coefficient of concrete bridge was obtained form short-term test data through linear regression approach. Comparisons among the regression analysis, test results and commonly-used prediction models for concrete creep in specifications showed that the predicted value by regression fitted in well with the test results

Key words: BP-KX model, creep, linear regression

摘要： 结合BP-KX模型徐变思想,给出了从混凝土短期试验值推算相应素混凝土在该桥梁工作环境下长期徐变系数的方法,通过对短期试验数据的线性回归得出桥梁素混凝土徐变系数的BP??KX模型修正公式。回归分析结果及试验数据与各国规范预测模型比较表明,回归曲线预测理论值与实测值吻合良好。

关键词: BP-KX模型, 徐变, 线性回归

CLC Number:

O345

XU Hang, PENG Xiao-ming , ZOU Li-qun. Prediction Research of Long-term Creep for Bridge Concrete Based on Short-term Test[J]. Journal of Chongqing Jiaotong University(Natural Science), 2010, 29(4): 518-520.

许航, 彭小明, 邹立群. 基于短期试验的桥梁混凝土长期徐变预测研究[J]. 重庆交通大学学报（自然科学版）, 2010, 29(4): 518-520.

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Prediction Research of Long-term Creep for Bridge Concrete Based on Short-term Test

基于短期试验的桥梁混凝土长期徐变预测研究

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