河道护岸工程的管桩方案研究
2020-08-25陆正平
陆正平


摘 要:北一支岸坡长期以来受雨水、风浪、人类无规律活动的影响,岸坡坍塌严重,需要进行改造加固。本研究考虑在河道迎水面新建护岸,即拟建木桩护岸和管桩护岸。为了选出较优的护岸,从施工方法、工期、造价、年度寿命周期成本几方面出发对木桩护岸和管桩护岸进行比较。结果表明,宜选择管桩护岸。管桩护岸已经在北一支河道成功应用,可以在今后的河道整治工程中进行广泛推广。
关键词:河道治理;木桩护岸;管桩护岸
中图分类号:TV223文献标识码:A文章编号:1003-5168(2020)19-0064-03
Abstract: The north bank slope has been affected by rain, wind and waves and irregular human activities for a long time. In this study, it is considered to build new revetment on the upstream of the river, that is, to build timber pile revetment and pipe pile revetment. In order to select the better revetment, the paper compares the timber pile revetment with the pipe pile revetment from the aspects of construction method, construction period, cost and annual life cycle cost. The results show that it is better to choose pipe pile for bank protection. Pipe pile revetment has been successfully applied in a North River channel, which can be widely used in river regulation projects in the future.
Keywords: river regulation;timber pile revetment;pipe pile revetment
为了保证水利工程安全运行,改善水流条件,提升环境质量,适应区域经济发展要求,岸坡防护成为河道治理中的重要组成部分。河道两侧楼宇林立,民宅、庭院、工业厂房、围挡依河而建,受地形条件的限制,传统的河道护砌方案涉及征地、拆迁等一系列问题,大开挖还可能造成建筑物地基松弛,并在一定程度上增加成本。通过对河道护岸工程方案的比选,确定最佳的建设投资方案,以实现结构稳固、技术可行、造价合理、工期较短、外表美观、使用寿命长、年度寿命周期成本小的目标。
1 工程概况
北一支位于淮安经济技术开发区徐杨街道办事处境内,北起深圳路,南到板闸干渠,全长2.0 km,是开发区主要的排水河道之一,排涝面积达15 km2。随着经济發展速度的加快,为了适应现代化城镇建设的需要,城市排水对河道的要求越来越高,活水清淤、治臭防黑、生态修复、控源截污、景观美丽成为城市河道治理的主旋律。……
