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The fourth pillar of infrastructure sustainability: tailoring civil infrastructure to social context

机译：基础设施可持续性的第四大支柱：根据社会环境调整民用基础设施

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摘要

This research proposes technical performance over time as a fourth pillar of sustainability theory for infrastructure. It also describes a method that allows us to discover how changes in the technical pillar (operationalized as reduced breakage rates) may moderate the influence of the social pillar (operationalized as repair rates) on sanitation infrastructure outcomes. Oral histories were used to develop a history of sanitation for each of 152 poor households in four rural communities in Bangladesh that have gained access to sanitation in the past decade. Transcriptions and qualitative coding identified reported states of sanitation (for example, broken vs. functional) at three time steps. These were used to develop an initial vector and transition matrix for a Markov chain analysis. The breakage rate in this model was then adjusted to investigate the impact of improved technical durability on sanitation outcomes. For the case analysed here, we found that increasing infrastructure durability by 50% (an estimated increase of two years) increased the rate of functional sanitation system use at model convergence from 54% to 88%. Increases in durability also caused households to use private rather than shared systems. Beyond this specific case, the generalizable theory and method presented here are analytic tools that permit targeted technical accommodation of social contexts specific to individual project sites.
机译：这项研究提出了随着时间推移的技术性能，将其作为基础设施可持续性理论的第四支柱。它还描述了一种方法，使我们能够发现技术支柱的变化（以降低的破损率运行）可以减轻社会支柱（以修复率的运行）对卫生基础设施成果的影响。口述历史被用来为孟加拉国四个农村社区的152个贫困家庭中的每一个家庭提供卫生设施的历史，这些家庭在过去十年中获得了卫生设施。转录和定性编码在三个时间步长上确定了报告的卫生状况（例如破损与功能性破坏）。这些被用来为马尔可夫链分析开发初始向量和转移矩阵。然后调整该模型的破损率，以研究提高技术耐用性对卫生结果的影响。对于此处分析的案例，我们发现，将基础设施的耐用性提高50％（估计增加两年），可以使模型收敛时功能性卫生系统的使用率从54％提高到88％。耐用性的提高还导致家庭使用私有而非共享系统。除了这种特殊情况，这里介绍的可推广的理论和方法是分析工具，可以针对特定项目站点的社会环境进行有针对性的技术适应。

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