- 摘 要
-
（1 西安工業(yè)大學(xué)北方信息工程學(xué)院， 西安 710032；2 西安建筑科技大學(xué)建筑設(shè)計(jì)研究院， 西安 710055； 3 中交通力建設(shè)股份有限公司， 西安 710075）
［摘要］某貯煤筒倉倉壁水滲漏現(xiàn)象嚴(yán)重，隨冬、夏季氣溫變化，倉壁混凝土發(fā)生凍融破壞。通過對該筒倉進(jìn)行現(xiàn)場查勘，將筒倉的破損程度進(jìn)行整理描述，分析了結(jié)構(gòu)破壞的原因。通過檢測試驗(yàn)得到了筒倉結(jié)構(gòu)混凝土的強(qiáng)度和碳化深度，并利用紅外成像儀對筒倉凍融破壞區(qū)的范圍進(jìn)行檢測；在此基礎(chǔ)上采用ABAQUS有限元分析軟件對筒倉在不同工況下的承載力進(jìn)行了計(jì)算分析，得到了可靠的安全性評價(jià)結(jié)果。利用多種手段進(jìn)行現(xiàn)場檢測并結(jié)合結(jié)構(gòu)計(jì)算分析，可較為準(zhǔn)確地得到結(jié)構(gòu)的鑒定結(jié)論，取得了良好的效果，可供類似工程參考。
［關(guān)鍵詞］混凝土； 筒倉； 凍融破壞； 損傷檢測； 安全性評估
中圖分類號：TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)01-0071-06
Safety assessment on freeze-thaw damage of a coal silo
Liu Linghua1, Luo Zheng2, Gao Le1, Chao Qianggang3
(1 Xi′an University of Technological Information, Xi′an 710032, China; 2 Xi′an University of Architecture and Technology Architecture Design Institute, Xi′an 710055, China; 3 Zhong Jiao Tong Li Construction Co., Ltd., Xi′an 710075, China)
Abstract:Due to the serious water leakage of coal silo wall, freeze-thaw damage occurs in wall concrete of a coal silo along with temperature changes in winter and summer. The study described the extent of damage of coal silo and analyzed the reasons for damage of the structure through the study of the field survey of the silo. Through the detection test, the strength and carbonation depth of the concrete in the silo structure were obtained, and the range of the freezing and thawing damage in the silo was detected by the infrared imager. Based on this, the ABAQUS finite element analysis software was used to calculate and analyze the carrying capacity of silo structure under different working conditions to obtain reliable safety evaluation results. The results of field detection test and structural analysis can be used to obtain the structural identification conclusion, and good results can be obtained to provide refer for similar projects.
Keywords:concrete; silo; freeze-thaw damage; damage detection; safety assessment
*西安工業(yè)大學(xué)北方信息工程學(xué)院院長基金項(xiàng)目(BXXJJ-YZ1510）。
作者簡介：劉玲華，碩士，講師，Email：liulh84@163.com。
- 下載地址
-
