上海城区建筑密度与地面沉降关系分析  

Relationship between building density and land subsidence in Shanghai urban zone

作　　者：严学新[1] 龚士良[1] 曾正强[1] 俞俊英[1] 沈国平 汪铁骏 

机构地区：[1]上海市地质调查研究院,上海200072 [2]上海市城市规划设计研究院,上海200040

出　　处：《水文地质工程地质》2002年第6期21-25,共5页Hydrogeology & Engineering Geology

摘　　要：工程建设逐渐成为上海近年来新的地面沉降制约因素。本文选择 4个典型的高层建筑及多层建筑密集区段 ,分析了建筑密度与地面沉降的关系 ,探讨了其时空变化特征。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 ,集中建设较分散建设、新区建设较旧城改造、高层建筑较多层建筑地面沉降效应明显。建筑密度越大 ,建筑容积率越高 ,地面沉降越显著。城市规划宜选择低密度、低容积率的建设模式 ,降低建筑高度、扩大建筑间距。提出了沉降控制条件下适宜的建筑容积率应在 0 9～ 1 2之间 ,从而为城市规划提供了决策性技术指标。The engineering construction gradually becomes the new factor for causing the land subsidence in Shanghai in recent year. Four typical sections of high\|rise and tier building dense area are selected, and the relationships between density and land subsidence are analyzed, and their space\|time change character is also discussed in this paper. The construction scale and its developing speed are directly caused the land subsidence in the meantime. The land subsidence effect is obvious just as centralized construction is bigger than dispersed construction, new area construction is bigger than old inhabited area, high\|rise building is bigger than low\|rise building. In other words, the land subsidence is remarkable in high construction density and high building volumetric fraction. The urban planning may choose the construction way of low dense and low volumetric fraction, may lower the building height, and may enlarge the distance between two buildings. The feasible building volumetric fraction is 0 9～1 2 under the land subsidence control, it may provide a technique index for urban planning.

关 键 词：上海 地面沉降 工程性沉降 建筑密度 建筑容积率 沉降控制 城市规划 

分 类 号：TU478[建筑科学—结构工程] P642.2[建筑科学—土工工程]