护岸结构优化改进案例分析  

Case analysis on optimization and improvement of revetment structure

作　　者：林志坚[1] 连石水[1] 何梓均 LIN Zhi-jian;LIAN Shi-shui;HE Zi-jun(CCCC-FHDI Engineering Co., Ltd., Guangzhou, Guangdong 510230, China)

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《中国港湾建设》2019年第4期48-53,共6页China Harbour Engineering

摘　　要：工程所在地海况条件较差且护岸软基处理施工期长,施工期间的防护安全可靠是护岸设计顺利实施的关键因素。原设计软基处理用围堰试验段成果表明:水运工程中常用的土工管袋护面在该工程中不适用,尼龙网兜块石替代土工管袋作为围堰的护面工程费用高且水下部分拆除难度很大。为达到护岸同时满足使用期与施工期安全要求的目的,提出在护岸坡脚增设钢管板桩的方式优化改进护岸结构。钢管板桩解决了软基处理施工期安全防护问题及护岸坡脚开挖回淤问题,提高了护岸整体稳定性,减少了砂桩的处理范围,降低了工程费用。The sea condition of the project site is poor and the construction period of soft foundation treatment for revetment is long, in this engineering, proposed that the safety and reliability of the protection of revetment during construction is the key factor for the implementation of revetment design. The result of test section which use the cofferdam for soft foundation treatment in the original design shows that geotextile tube protective facing commonly used in water transport engineering is not applicable in this engineering. Furthermore, the engineering cost increased and the underwater part is difficult to dismantle by using the nylon net pocket stone instead of geotechnical tube for protective facing. In order to meet the safety requirements of both service and construction periods, the method of adding steel sheet piles at the foot of revetment slope is proposed to optimize and improve revetment structure. The application of steel sheet pile solves the safety problem of protection during the construction of the soft foundation treatment and the problem of the silt at the foot of the revetment slope, improves the overall stability and reduces the scope of sand pile treatment and the engineering cost for the revetment.

关 键 词：护岸 结构优化改进 钢管板桩 围堰 

分 类 号：U656.3[交通运输工程—港口、海岸及近海工程]