Case analysis of sudden cracking in buildings near landfill pit

IF 0.4 Q4 ENGINEERING, CIVIL
Q. Zhang, Xiaoyong Xu, Qiang Zhao
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引用次数: 0

Abstract

The causes of cracks in 6-storey building are studied. Based on analyses of crack morphology, settlement observation and geological survey, it is determined that the landfill pit and uneven settlement is the main cause of cracks. The July 20th Zhengzhou Rainstorm caused a sharp rise of groundwater level, so that the uneven settlement of the office building near the landfill pit intensified, and then the wall cracking is followed. The interaction between buildings and landfill pits under different water levels is studied by three-dimensional numerical simulation. As the water level rise, the horizontal displacement of soil in the landfill pit increase, and the lateral constraint of landfill soil to foundation soil decrease, the result is that the settlement of column foundation near the landfill pits increases and the differential settlement intensifies. According to the analysis results, the further development of differential settlement and cracks are evaluated and the treatment suggestions are given.
垃圾填埋场附近建筑物突然开裂的实例分析
研究了某6层建筑裂缝产生的原因。通过裂缝形态分析、沉降观测和地质调查,确定了填埋坑和不均匀沉降是产生裂缝的主要原因。7月20日郑州暴雨导致地下水位急剧上升,使填埋坑附近办公楼不均匀沉降加剧,墙体开裂随之而来。采用三维数值模拟方法,研究了不同水位下建筑物与填埋场的相互作用。随着水位的升高,填埋坑内土体水平位移增大,填埋土对地基土的侧向约束减小,导致填埋坑附近柱基础沉降增大,差异沉降加剧。根据分析结果,对不同沉降和裂缝的进一步发展进行了评价,并提出了处理建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.70
自引率
0.00%
发文量
28
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