软土地基建筑稳定性模糊综合评价方法研究

发布时间：2018-10-21 16:04

【摘要】：软土地基具有高压缩比、低力学性能、较强塑性,不利于上部建筑工程稳定.施工前,对现状条件下建筑的稳定性进行预判,并根据评判结果提出相应的地基处理方案,对工程的安全实施很有必要.基于软基建筑稳定性受多种因素控制,具有一定的模糊性,提出采用模糊综合评价方法.首先通过技术和工程资料分析,建立了有8个主要影响因素组成的评价因子集合,并给出了合理的隶属度.然后运用层次分析方法得到了各因素的比较评判矩阵,并计算得到了权重集.在此基础上,建立了软基建筑稳定性分级与综合评价指数的对应关系集.最后,将方法运用到某软土建筑稳定性评价中,结果表明方法能够较好地适用于软土基地建筑稳定性评价,但需进一步就隶属度、权重、评价集等集合的建立进行完善.
[Abstract]:Soft soil foundation has high compression ratio, low mechanical properties and strong plasticity, which is not conducive to the stability of upper building engineering. Before the construction, the stability of the building under the present condition is forecasted, and the corresponding foundation treatment scheme is put forward according to the evaluation result. It is necessary to carry out the safety of the project. Based on the fact that the stability of soft foundation building is controlled by many factors and has certain fuzziness, a fuzzy comprehensive evaluation method is proposed. Based on the analysis of technical and engineering data, a set of evaluation factors consisting of eight main influencing factors is established, and a reasonable membership degree is given. Then, the comparative judgment matrix of each factor is obtained by using AHP method, and the weight set is calculated. On this basis, the corresponding relation set between stability classification and comprehensive evaluation index of soft foundation building is established. Finally, the method is applied to the stability evaluation of a soft soil building. The results show that the method can be applied to the stability evaluation of the soft soil base building, but the establishment of membership degree, weight, evaluation set and so on need to be further improved.
【作者单位】：厦门理工学院土木工程与建筑学院;
【基金】：厦门理工学院高层人才科技类项目(YKJ14011R)
【分类号】：TU470

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