Author(s)

Xiuyue Hu

Corresponding Author

Xiuyue Hu

Abstract

Based on life cycle cost analysis (LCCA), this paper constructs a framework for sustainable management of civil engineering cost, aiming at achieving the synergy between the optimal life cycle cost and the goal of sustainable development. The main innovations include the concept model of "three-dimensional sustainable cost": environmental cost (carbon emission, pollution control) and social cost (health impact, community effect) are brought into the scope of cost management, forming a multi-dimensional and dynamic cost evaluation system. A dynamic cost prediction equation including initial cost, operating cost, environmental cost and social cost is established, in which the discount rate is integrated with sustainable factors such as carbon price, which provides a scientific decision-making tool for civil engineering that takes into account economic, environmental and social benefits. Through the integrated design of BIM model, cost list, energy consumption simulation data, building materials carbon footprint database and operation and maintenance history big data, it provides full-cycle, structured and visual data input for LCCA model. Real-time monitoring of building energy consumption, indoor environmental quality and other data using Internet of Things (IoT) sensors, and regular input of LCCA model for comparative analysis, forming a closed-loop management, guiding long-term building management and optimization. The empirical study shows that: comparing the green scheme with the traditional scheme, although the initial construction cost of the green scheme is high, its significant savings in operation, environment and social costs reduce the total life cycle cost by 16.6%, which proves that the decision based on sustainable LCCA can achieve the best long-term comprehensive benefits.

Keywords

Life Cycle Cost, Sustainable Management, Civil Engineering Cost