红岗新河整治工程中水工混凝土干、湿路径影响下力学劣化效应研究  

Study on the mechanical degradation effect of hydraulic concrete under the influence of drying and wetting paths in the Honggang New River Remediation Project

作　　者：徐衡 XU Heng(Guangdong Provincial Water Resources and Hydropower Third Engineering Bureau Co.,Ltd.,Dongguan Guangdong,523710,China)

机构地区：[1]广东省水利水电第三工程局有限公司,广东东莞523710

出　　处：《江西水利科技》2025年第2期79-83,共5页Jiangxi Hydraulic Science & Technology

摘　　要：为探讨红岗新河整治工程中水工混凝土干、湿作用下力学特性劣化效应,设计了干燥、浸湿不同时间下混凝土试样力学宏、细观试验。试验数据分析表明:干燥时间因素对试样应变特征影响效应高于浸湿时间,而围压对试样应变特征影响作用也高于浸湿时间。干燥时间或浸湿时间愈长,试样应力水平愈低,但干燥时间产生的应力劣化效应高于浸湿时间。干燥时间不同,试样破坏面孔隙聚集于颗粒结构内部,而浸湿时间主要会影响颗粒接触面孔隙特征。论文对探讨干、湿路径作用下类似工程水工混凝土力学试验分析提供参考。To investigate the degradation effect of mechanical properties of hydraulic concrete under dry and wetconditions in the Honggang New River Remediation Project.The macro and micro mechanical tests were designed onconcrete specimens under different drying and wetting times.The experimental results show that the drying time andconfining pressure have greater effects on the strain characteristics of the specimens than those of the wetting time.Thestress of the sample decreases with the longer drying time or soaking time,but the drying time produces a higher stressdegradation effect than that of the wetting time.The pores on the damaged surface of the sample within the particlestructure with different drying time,while the pore characteristics of the particle contact surface are mainly influencedby the wetting time.This study provides a reference for exploring the differences in the effects of drying and wettingpaths on the mechanical testing for the hydraulic concrete.

关 键 词：红岗新河 水工混凝土 力学特性 干、湿路径 

分 类 号：TV8[水利工程—水利水电工程]