- 摘 要
-
（青島理工大學(xué)土木工程學(xué)院， 青島 266033）
［摘要］對12根圓鋼管橡膠混凝土（RCFT）短柱進(jìn)行軸壓試驗(yàn)，研究了橡膠摻量對圓鋼管混凝土短柱力學(xué)性能的影響。結(jié)果表明：圓鋼管橡膠混凝土短柱破壞形態(tài)為鋼管一處或多處出現(xiàn)鼓曲或褶曲破壞；圓鋼管橡膠混凝土短柱在加載過程中具有較好變形能力和后期承載力；圓鋼管橡膠混凝土短柱軸壓承載力隨橡膠摻量的增加而降低。參考韓林海等給出的鋼管混凝土軸壓承載力計(jì)算公式，對試驗(yàn)數(shù)據(jù)進(jìn)行線性回歸，提出了圓鋼管橡膠混凝土短柱軸壓承載力計(jì)算公式。與試驗(yàn)值相比，計(jì)算結(jié)果偏于安全。
［關(guān)鍵詞］圓鋼管橡膠混凝土； 軸壓試驗(yàn)； 橡膠摻量； 破壞模態(tài)； 軸壓承載力
中圖分類號(hào)：TU398-9文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)03-0066-05
Effect of rubber content on mechanical properties of round rubber concrete-filled steel tubular short columns
Xu Peizhen， Li Huiwen， Yan Hongsheng， Zhu Yaguang
(School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China)
Abstract:Axial compressive loading test was carried out on 12 of round rubber concrete-filled steel tubular (RCFT) short columns to study impacts of rubber content on the mechanical properties of the columns. The experimental results show that the failure modes of the columns are one or several ring buckles appeared around columns. The columns show high deformation capacity and late bearing capacity during the whole loading process. The axial compressive bearing capacity of the columns decreases with increase of the rubber content. Base on calculation formula of axial compressive bearing capacity of concrete-filled steel tubular columns given by Han Linhai et al., the calculation formula of axial compressive bearing capacity on RCFT was presented. Comparing with the results of experiment, the calculation results were relatively conservative.
Keywords:round rubber concrete-filled steel tubular column; axial compressive loading test; rubber content; failure mode; axial compressive bearing capacity
*國家自然科學(xué)基金資助項(xiàng)目(51578342)，中國博士后科學(xué)基金資助項(xiàng)目(2015M582418)。
作者簡介：徐培蓁，博士，教授，Email: xpzzyg1@163.com。
- 下載地址
-
