5中央分隔带排水设计.doc

西部交通建设科技项目 合同号：2001 318 000 29 公路排水系统设计方法的研究 研究报告简本 四川省交通厅公路局 同 济 大 学 凉 山 州 公 路 局 2003年12月  提要：从公路排水系统设计的视角，结合国外和我国十多年高等级公路建设的经验，对现行“公路排水设计规范”中公路排水系统的设计理论、方法和参数作一个全面和系统的审视，从而，对规范中的疏漏和不足，进行补充完善；对规范中一些原则性规定进行细化明确；并从简便设计的角度上，增加公路常用排水设施──沟、管、槽的水力计算诺谟图和典型结构，为下一阶段规范的修订提供了依据。 另一方面，针对我国西部地区（尤其是西南地区）公路排水的重点问题和特点，对山区公路的坡面排水，以及低洼平坦路段和深长挖方路段的公路排水系统设计理论和方法进行了详细的研究。对渗沟、井水力计算方法进行了扩充和完善；对土工合成材料在公路防排水中应用中的关键技术进行了归纳总结；最后，提出了相应的公路排水系统的布设方案和设计方法，为西部公路建设提供了技术基础。 Abstract: Viewing the highway drainage system design, the theories, methods and parameters in the “Design Specification of Highway Drainage System” were comprehensively and systematically reviewed with the experience of highway construction for nearly ten years. Thereby, supplements and modifications to the omissions and insufficiency of the present Specification were performed, and some fundamental provisions stated in the Specification were detailed. For the purpose of simplicity and convenience in design, the hydrodynamic nomographs and typical structures of drainage facilities commonly used in roads were appended. So the research results can provide sound data for the forthcoming amendment to the Specification. On the other hand, regarding the imperative problems and characteristics of highway drainage in West Zones (especially in Southwest Areas), slope drainage of mountainous roads, the design theories and methods of highway drainage system at low-flat terrain and deep-long cut section were thoroughly studied. The method of hydrodynamic computation for seepage ditches and wells were expanded and updated. The key techniques in the application of geotechnical synthesized material to highway water protection and drainage were summarized, and the layout scheme and design method of highway drainage system were correspondingly presented. The research achievements can provide technical supports to highway construction in West Zones