边荷载对水闸安全的影响及对策研究  

Study on the Influences and Mitigation Measures of Side Load on Sluice Safety

作　　者：黄岳文 陈小丹[2] HUANG Yuewen;CHEN Xiaodan(Guangzhou Water Engineering Technical Center,Guangzhou 510640,China;Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China)

机构地区：[1]广州市水务工程技术中心,广州510640 [2]广东省水利水电科学研究院,广州510635

出　　处：《广东水利水电》2022年第10期1-7,共7页Guangdong Water Resources and Hydropower

摘　　要：针对边荷载可能对水闸结构产生不利影响的情况,分析了工程设计降低边荷载不利影响的常用工程措施,研究表明,在深厚软基采用浮运闸、换砂垫层和木桩基础等传统技术无法有效减小边荷载不利影响,是造成水闸病害的主要原因;在深厚软基水闸采用桩基础则可能出现底板脱空现象等问题;而软基上空箱岸墙在连接堤填土荷载作用下产生不均匀沉降容易导致伸缩缝过度张开造成止水破坏,从而出现漏水通道等情况。研究和实践表明搅拌桩隔离墙可有效减小边荷载引起的不利影响,建议水闸地基处理设计要重视搅拌桩隔离墙的作用。In view of the adverse effects of side load on a sluice structure,common engineering measures to reduce the adverse effects of side load in engineering designs are analyzed,and it is found that:Traditional techniques such as floating sluice,sand cushion and timber pile foundation cannot effectively reduce the adverse effects of side load for sluices over deep soft subsoil,which is the main cause of sluice operating problems;The pile foundation used in the deep soft soil may cause some problems,such as the phenomenon of floor cavitation;The differential settlement of the chamber on the soft soil foundation under the action of the levee fill may lead to the failure of the water seal joint,which could become a passage for water leakage.Researches and engineering practices showed that cement deep-mixing separation wall underneath the sluice could serve as an effective measure to reduce the adverse effects induced by the side load.Such a measure is recommended in the design of sluice foundations.

关 键 词：水闸 边荷载 不均匀沉降 地基处理 桩基础 搅拌桩隔离墙 

分 类 号：TV66[水利工程—水利水电工程] TU470[建筑科学—结构工程]