基于解释结构模型的夯土墙质量影响因素分析

Analysis on quality influencing factors of the rammed-earth wall based on an interpretative structural model

要要::夯土墙作为夯土建筑的主要受力构件,其质量关系到结构的安全性.夯土墙质量的涉及因素多,因素间的主次关系和层级关系不明确.基于ISM理论的思想,给出夯土墙质量的解释结构模型的构建示意图;结合夯土墙的现状调查及破坏特征,选出21个影响夯土墙质量的主要因素,建立夯土墙质量影响因素二元关系集合,并进行矩阵量化分析;利用规范法对矩阵进行区域化、层次化及级位化处理,建立因素变量递阶结构模型,构建出夯土墙质量的结构解释模型.研究表明:夯土墙质量影响因素可以分为6个层次,明确了各影响因素间的主次关系和层级关系,有效地指导夯土民居设计与施工.

As main stress components of the rammer earth buildings, the quality of rammed-earth wall is directly related to the safety of the structure. The quality of the rammed-earth wall involves many influencing factors, in which the primary and secondary relations and hierarchy are difficult to determine. Based on the ISM theory, the construction schemes of interpretative structural modeling of the quality of rammed-earth wall is given. Combined with the investigation of the present situation and the failure characteristics of rammed-earth wall , 21 main factors that influence the quality of rammed-earth wall are selected, thereby establishing a binary relation set on influence factors of quality of rammed-earth wall, and conducting a quantitative analysis of the matrix. Specification method is used to make the matrix regionalized, hierarchical and bit-level, and establish factors variable hierarchical structure model and construct the interpretative structural model of quality of rammed-earth wall. Research shows that： the influencing factors of quality of rammed-earth wall can be divided into six levels, which made clear the primary and secondary relations and hierarchy between influencing factors. This provides necessary guidance for the design and construction of rammer earth residence effectively.