不均匀沉降对高层建筑框架  地下室结构防水影响分析

於忠华; 王静峰; 高海云; 丁兆东

文章摘要

於忠华,王静峰,高海云,丁兆东.不均匀沉降对高层建筑框架地下室结构防水影响分析[J].安徽建筑大学学报,2018,26(4):32-39

不均匀沉降对高层建筑框架地下室结构防水影响分析

Analysis for Waterproof Influence of Uneven Settlement on Basement Frame Structure in High-rise Building

DOI：10.11921/j.issn.2095-8382.20180407

中文关键词: 不均匀沉降高层建筑地下室结构防水有限元

英文关键词: uneven settlement high-rise building basement structure waterproof finite element method

基金项目:教育部新世纪优秀人才支持计划(NCET-12-0838)

作者	单位
於忠华	合肥工业大学土木与水利学院，安徽合肥 230009
王静峰	合肥工业大学土木与水利学院，安徽合肥 230009
高海云	合肥市重点工程建设管理局，安徽合肥 230031
丁兆东	合肥工业大学土木与水利学院，安徽合肥 230009

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中文摘要:

为研究不均匀沉降对高层建筑框架地下室结构防水的影响，文章采用 MIDAS 程序建立地下室有限元分析模型，通过设置不同沉降形式，系统地探究了地下室结构在不均匀沉降作用时的受力性能。对应力较大局部区域采用ABAQUS建模分析，重点研究这些局部区域在不均匀沉降作用下的应力、应变和损伤分布。对于混凝土材料采用塑性损伤模型描述其漏水的情况，分析其损伤-位移曲线，总结不同区域混凝土发生损伤的先后以及最终损伤值大小，深入研究其破坏模式，获得不均匀沉降对地下室结构防水影响的规律。研究表明，地下室结构在柱子发生沉降时，柱脚区域会有较大损伤；剪力墙发生沉降时，在剪力墙底部会有斜裂缝向上延伸，这些区域都是地下室结构防水的薄弱区域，要采取相应处理措施。本文研究成果将为城市地下室结构防水优化设计和施工应用提供科学依据。

英文摘要:

To study the waterproof influence of uneven settlement on basement frame structure in high-rise building，the finite element analysis (FEA) model of basement structure was carried out by MIDAS software. The mechanical properties of basement structures under uneven settlement were investigated by setting different settlement forms. The local region with larger stress was also analyzed by ABAQUS software. The stress，strain and damage distribution in these local regions under uneven settlement were mainly studied. The plastic damage model was used to describe the water leakage of the concrete. The damage order and damage value of the concrete in different regions with larger stress were summarized according to the damage-displacement curves of these regions，then the failure mode was studied. Furthermore，the waterproof influence of uneven settlement on basement structure in high-rise building was estimated. The results showed that in basement structures the column settlement led to the larger stress in column base or the diagonal crack on the lower part of the wall. Therefore，these weak parts of basement structures and corresponding measurement should be applied.The research results of this paper will provide scientific basis for the optimal of design and construction application in the waterproof of basement structures.

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