复杂应力状态下混凝土局压特征与强度影响因素分析

为弄清混凝土局部承压特征和强度影响因素规律,通过深入分析大量试验数据与国内外研究成果,对混凝土局部承压及破坏特征进行了归纳总结,并就尺寸效应、载面组合及内力偶臂系数对局压混凝土强度的影响过程进行了深入分析,结合我国桥涵设计规范给出的结果提出了适用范围和条件,同时针对存在问题提出了优化建议。

In order to make clear the characteristics of local bearing pressure of concrete and the law of influencing factors of strength,the characteristics of local bearing pressure and failure of concrete are summarized through deep analysis of a large number of experimental data and research results at home and abroad.The influence process of size effect,loading surface combination and internal force coupling coefficient on the strength of local compressed concrete is analyzed,and the applicable scope and conditions are put forward according to the results given by the design code of bridges and culverts in China.At the same time,in view of the existing problems,the optimization suggestions are put forward.