体育场不同基础类型结构沉降规律研究

Settlement evaluation for upper structures of stadium with different foundation types

为了研究不同基础类型下大型体育场上部结构沉降规律,本文以湖北省某体育中心为背景,将上部结构等效为均布荷载,考虑筏板、桩筏及桩梁三种基础形式,分别利用FLAC3D数值计算软件模拟分析,得到不同基础类型及不同荷载作用下上部结构的沉降变形规律。结果表明:相同荷载作用下,筏板基础产生的沉降最大,桩筏基础次之,桩梁基础最小;相同基础形式下,随着上部荷载的增加,基础沉降量增大。对于大型建构筑物诸如体育场馆,筏板基础刚性较小,基础沉降较大,不宜选择,同时从经济角度考虑,应选用桩梁基础做为大型体育场的基础形式。

To study the settlements of upper structures of stadium with different foundation types,a stadium in Hubei Province was selected as a case study.The upper structures of stadium were simplified as uniformly distributed loads and FLAC3D numerical simulation software was used to calculate the settlement of upper structures with different foundation types and loading.Three foundation types were considered,i.e.,raft foundation,piled raft foundation and pile caps foundation.The results showed that under the same loading,the settlement of raft foundation was the highest,followed by piled raft foundation and pile caps foundation.Meanwhile the settlement of foundation increased with the increase of upper loading.The rigid of raft foundation was relatively small which resulted in a higher settlement.Thus,it was not suitable for the large-sized structures such as stadium.Pile caps foundation was recommended when considering economy.