城市建设对地面沉降影响的原因分析
摘要:在地下水开采引起的地面沉降得到初步控制之后,沿海地区城市工程建设引起的地面沉降就显得日益突出。人们发现上海城区建筑规模及其增长速度直接导致工程性地面沉降同步增长。建筑密度越大,建筑容积率越高,地面沉降越显著。分析了一定间距的荷载共同作用的宏观效应,提出了等效影响荷载的概念,进而揭示了城市工程建筑与大面积等效影响荷载的关系。据此对文献中观测得到的上海城市建设与地面沉降的关系进行了较好的解释。有关分析对软土地基上城市建设规划具有一定参考意义。
Abstract:After land subsidence by exploiting ground water being controlled, the subsidence induced by city construction became more and more obvious. It is found that the engineering-related subsidence increased with the construction scale and speed. Bigger building density and bigger volumetric fraction caused bigger subsidence. The paper involved analyzing the macro effect of loads distributed with certain space, proposing the concept of equivalent effecting load, discussing the relationship between city building and large-scale equivalent effecting load, and interpreting the construction-induced land subsidence in shanghai. It is thought to be helpful for urban planning in cities with soft subsoil.
中文标题:
城市建设对地面沉降影响的原因分析
Analysis on the Land Subsidence Induced by City Construction
作者:
介玉新1,2,高燕1,2,李广信1,2
Jie Yuxin1,2,Gao Yan1,2,Li Guangxin1,2
作者简介:介玉新,1970年生,男,副教授,博士,主要从事土工数值计算、基础工程、土工合成材料等方面的教学和科研工作。E-mail:jieyx@tsinghua.edu.cn
通讯地址:
1. 清华大学水利水电工程系, 北京 100084; 2. 水沙科学与水利水电工程国家重点实验室(清华大学), 北京 100084
1.DepartmentofHydraulicEngineering,TsinghuaUniversity,Beijing100084; 2.StateKeyLaboratoryofHydroscienceandEngineering,TsinghuaUniversity,Beijing100084China
中图分类号:P642.2
出版物:岩土工程技术
收稿日期:2007-01-15
网络出版日期:2021-07-10
关键词:沉降,容积率,等效影响荷载,工程性沉降,城市规划
Key words:subsidence,building volumetric fraction,equivalent effecting load,engineering-related subsidence,urban planning
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