城市垃圾炉渣变形特性的三轴试验

doi:10.3969/j.issn.1000-565X.2016.07.018

华南理工大学学报（自然科学版） ›› 2016, Vol. 44 ›› Issue (7): 116-122.doi: 10.3969/j.issn.1000-565X.2016.07.018

城市垃圾炉渣变形特性的三轴试验

宋丹青项国圣

上海交通大学船舶海洋与建筑工程学院，上海 200030

收稿日期:2015-11-16 修回日期:2016-01-22 出版日期:2016-07-25 发布日期:2016-06-05
通信作者: 宋丹青(1989-)，男，博士生，主要从事岩土工程等研究． E-mail:015010910026@sjtu.edu.cn
作者简介:宋丹青(1989-)，男，博士生，主要从事岩土工程等研究．
基金资助:
国家自然科学基金资助项目(41401107);国家重点基础研究发展计划(973 计划)项目(2014CB744701)

Triaxial Tests of Deformation Characteristics of Bottom Ash from Municipal Solid Waste Incineration

SONG Dan-qing XIANG Guo-sheng

School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 200030,China

Received:2015-11-16 Revised:2016-01-22 Online:2016-07-25 Published:2016-06-05
Contact: 宋丹青(1989-)，男，博士生，主要从事岩土工程等研究． E-mail:015010910026@sjtu.edu.cn
About author:宋丹青(1989-)，男，博士生，主要从事岩土工程等研究．
Supported by:
Supported by the National Natural Science Foundation of China(41401107)and the National Program Key Basic Research Project of China(973 Program)(2014CB744701)

摘要/Abstract

摘要： 为研究垃圾炉渣的变形特性，首先对其材料特性进行分析，然后针对不同粒径分布、浸水时间及破坏后的重塑垃圾炉渣进行饱和三轴固结排水剪切试验，测得不同围压下的固结排水剪应力–应变曲线以及有效应力比曲线形态等工程特性．结果表明:炉渣的粒径分布、浸水时间是影响炉渣变形特性的重要因素;对于粒径不大于2mm 的炉渣，其强度随大颗粒含量的增加而减小，随浸水时间的延长而小幅度降低;破坏后重塑试样的强度与初始试样相比也有所下降;与标准砂相比，炉渣的应力–应变曲线峰值出现得相对较快．

关键词: 城市垃圾, 炉渣, 粒径分布, 浸水时间, 围压, 固结排水剪切试验

Abstract: In order to discover the deformation characteristics of MSWI (Municipal Solid Waste Incineration) bot- tom ash,the material characteristics were analyzed,and consolidated triaxial draining compression tests were car- ried out for the samples with various particle size distribution and immersion time as well as for the remoulded sam- ples after destruction.Thus,the stress-strain curves and effective stress ratio curves of MSWI bottom ash at diffe- rent confining pressures were obtained.The results show that (1) particle size distribution and immersion time are two important factors influencing the deformation characteristics of MSWI bottom ash; (2) for the samples with a particle size being less than 2mm,the strength decreases as the content of large-size particles increases and slightly decreases with the prolonging of immersion time; (3) the strength of remoulded MSWI bottom ash decreases after the destruction; and (4) in comparison with that of the standard sand,the peak of stress-strain curve of MSWI bot- tom ash appears relatively faster.

Key words: municipal solid waste, bottom ash, particle size distribution, immersion time, confining pressure, con- solidated draining compression test

宋丹青项国圣. 城市垃圾炉渣变形特性的三轴试验[J]. 华南理工大学学报（自然科学版）, 2016, 44(7): 116-122.

SONG Dan-qing XIANG Guo-sheng. Triaxial Tests of Deformation Characteristics of Bottom Ash from Municipal Solid Waste Incineration[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(7): 116-122.

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城市垃圾炉渣变形特性的三轴试验

Triaxial Tests of Deformation Characteristics of Bottom Ash from Municipal Solid Waste Incineration

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