南水北调中线沙河渡槽施工方案研究及优选

Research and Optimization of Shahe Aqueduct Construction Scheme in the Middle Route of South-to-North Water Diversion Project

通过对3种典型的施工工法进行分析和论述,重点研究了30 m跨1 200 t重U形渡槽的造槽机和架槽机两种机械化施工方案,通过建立仿真模型计算各种工况下的受力情况,分析设备的安全、可靠性,提出设备的主要性能指标,通过对架槽机、造槽机、满堂脚手架3种方案技术先进性、安全、进度等各方面优缺点综合分析,优选出能保证工程质量和工期的架槽机施工方案。

Shahe aqueduct is a main controlling project in the Middle Route of South-to-North Water Diversion Project. The aqueduct body is the structure of prestressed reinforced concrete beam with high flow,large span,long line and poor site conditions, so that the construction scheme is especially important. The analysis and discussion has been done with three typical construc-tion methods of Shahe aqueduct in the Middle Route of South-to-North Water Diversion Project in this paper,and especially the two mechanical construction schemes hy aqueduct-making machine and aqueduct-installing machine have been researched for 1,200t U-shaped aqueduct with span of 30m. By simulation model, the forces have been calculated for different working conditions, the safety and reliability of the equipment has been analyzed, and the main performance index has been given. Aqueduct-in-stalling machine has finally been optimized for ensuring project quality and construction period .according to the comprehensive analysis of merit and demerit for three schemes of aqueduct-making machine, aqueduct-installing machine, and full scaffold withthe respects of technical achievement, safety, and schedule.