拉压不同模拉伸硬化GRC矩形梁弯曲性能研究  

Flexural Property of Tension Strain-hardening GRC Rectangular Beams with Different Moduli in Tension and Compression

作　　者：司国栋 吕锋 孙诗兵[1] 田英良[1] 李欣 金晓冬 SI Guodong;LYU Feng;SUN Shibing;TIAN Yingliang;LI Xin;JIN Xiaodong(College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China;China Building Material Test&Certification Group Co.,Ltd.,Beijing 100024,China;Beijing Urban Construction No.5 Construction Engineering Co.,Ltd.,Beijing 100029,China)

机构地区：[1]北京工业大学材料科学与工程学院,北京100124 [2]中国建材检验认证集团股份有限公司,北京100024 [3]北京城建五建设集团有限公司,北京100029

出　　处：《硅酸盐通报》2020年第7期2092-2098,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家重点研发计划(2018YFD1101004)。

摘　　要：对拉压不同模拉伸硬化(THDM)模型矩形梁进行分析,推导了弯矩方程,其可以退化为弹性(E)、弹塑性(EP)、弹性硬化(EH)、拉压不同模弹性(DM)、拉压同模拉伸硬化(THSM)模型矩形梁弯矩方程。用ABAQUS模拟不同模型的四点弯曲试验,THDM模型挠度与玻璃纤维掺量为5%的GRC试验挠度最接近。相同最大拉应力对应的THDM模型的弯矩大于E模型的弯矩。Based on the flexural analysis of tension strain-hardening rectangular beams with different moduli in tension and compression(THDM),the bending moment equations are derived,which can be deteriorated into the bending moment equations of the rectangular beams with elastic(E),elastic-plastic(EP),elastic hardening(EH),elasticity with different moduli in tension and compression(DM)and tension strain-hardening with same moduli in tension and compression(THSM).ABAQUS is used to simulate the four point bending test of different models.The deflection of THDM is the closest to that of GRC test with 5%glass fiber content.The bending moment of THDM model corresponding to the same maximum tensile stress is larger than that of elastic model.

关 键 词：玻璃纤维增强水泥(GRC) 矩形梁 弯曲性能 拉伸硬化 拉压不同模 

分 类 号：TU528.58[建筑科学—建筑技术科学]