外文翻译--移动式起重机Automatedgenerationofworkspacerequirementsofmobilecraneoperationstosupportconflictdetection（英文）.doc

外文原文:
Automated generation of workspace requirements of mobile crane operations to support conflict detection
Abstract
Modeling workspace requirements related to mobile crane operations could minimize delays associated with spatial conflicts and hazards on construction sites. To identify spatial conflicts related to crane operations, project engineers need to model and reason about spatio-temporal
behaviors of cranes and coordinate them within a dynamic construction environment across time. Current approaches for identifying equipment related spatial conflicts are based on discrete-event simulation of dynamic equipment motion. The accuracy of spatial conflicts detected using such approaches can be error-prone since it depends on a rate of time increment for the simulation to be set by the user. This paper presents an approach for generating workspaces that encapsulate spaces occupied by mobile cranes moving during an operation. It also discusses an assessment of the effectiveness of the approach in identifying spatial conflicts between mobile cranes and ponents.
1. Introduction
Mobile cranes are widely used on construction sites for lifting materials. Compared to other types of construction equipment, mobile cranes typically occupy relatively large workspaces in three dimensions (3D) during an operation. When the workspace of a crane is not taken into account prior to its operation, the potential for spatial conflicts between the crane and ponents (.,
existing building facilities, temporary structures, and other construction equipment) located within the proximity of the crane increases [1–3]. Existences of such spatial conflicts can potentially result in work interruptions, productivity reductions, hazardous work conditions, and damages to existing structures [1,2,4,5]. As reported by Occupational Safety and Health Administration (OSHA), 40% of the deaths involving cranes on construction sites from 1984 to 1994 were related to spatial conflicts [6]. Thes