河道清淤过程中排桩对岸坡的支护作用研究  

Study on supporting effect of pile rows in river dredging process

作　　者：陈强 蒋宁 万俊 李娟 黄献聪 CHEN Qiang;JIANG Ning;WAN Jun;LI Juan;HUANG Xiancong(School of Marine and Civil Engineering,Dalian Ocean University,Dalian 116023,China;School of Water Conservancy and Environment Engineering,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China;Wenzhou Lucheng District Water Conservancy Engineering Construction Center,Wenzhou 325088,China)

机构地区：[1]大连海洋大学海洋与土木工程学院,辽宁大连116023 [2]浙江水利水电学院水利与环境工程学院,浙江杭州310018 [3]温州市鹿城区水利建设管理中心,浙江温州325088

出　　处：《水利水电快报》2025年第4期77-83,共7页Express Water Resources & Hydropower Information

基　　金：浙江省水利厅科技计划项目(RB2222)。

摘　　要：为了研究排涝河道清淤疏浚过程中排桩对岸坡的支护作用,以浙江温瑞平原丰门排涝河道的清淤疏浚工程为例,进行室内试验和数值模拟分析。研究结果表明:无排桩支护时,岸坡位移和开挖深度之间呈明显的非线性关系,开挖超过0.50 m后,位移骤增,排桩支护不仅可以减小岸坡位移,还能有效抑制干砌石护坡的转动。在开挖过程中,桩最大剪应力出现在河底附近,随着开挖深度的增加,桩最大剪应力位置逐渐下移。排干水位和开挖都会使岸坡的稳定性降低,但排桩支护后的河道岸坡稳定性和位移均能满足相关规范要求,说明该支护措施具备足够的可靠性。研究成果可为排涝河道中排桩支护的设计、施工及运行管理提供参考。To investigate the supporting effect of pile rows during the dredging and desilting process of drainage rivers,indoor tests and numerical simulation analyses were conducted based on the dredging and desilting project of the Fengmen drainage river in the Wenrui Plain,Zhejiang Province.The research found that:without pile row support,there was a significant non-linear relationship between the riverbank displacement and the excavation depth.After excavation depth exceeded 0.50 m,the displacement increased sharply.Pile row support can not only reduced the riverbank displacement but also effectively inhibited the rotation of the dry-laid stone revetment.During the dredging process,the maximum shear stress of the piles appeared near the river bottom,and as the excavation depth increased,the position of the maximum shear stress gradually moved downward.Both the lowering of groundwater level and excavation led to a decrease in the stability of the riverbank.However,the stability and displacement of the riverbank after pile row support met the relevant standard requirements,indicating that the support measures have sufficient reliability.The research results can provide a reference for the design,construction and operation management of row pile support in drainage rivers.

关 键 词：清淤开挖 排桩支护 桩剪应力 岸坡稳定 

分 类 号：TV8[水利工程—水利水电工程] TV882.8