拉哇水电站下游河道防护工程防冲桩施工重难点控制  

Control of Key and Difficult Points in the Construction of Anti-scouring Cast-in-place Piles for the River Protection Project Downstream of the Lawa Hydropower Station

作　　者：包秀花 何林智 BAO Xiuhua;HE Linzhi(Sichuan Ertan International Engineering Consulting Co.,LTD.,Chengdu,Sichuan 611130)

机构地区：[1]四川二滩国际工程咨询有限责任公司,四川成都611130

出　　处：《四川水力发电》2024年第3期149-153,共5页Sichuan Hydropower

摘　　要：根据钻孔灌注桩的成孔方式,可将其划分为钻孔灌注桩、沉管灌注桩、人工挖孔、挖孔扩底等,在工程实践中,最常见的有:钻孔灌注桩和沉管灌注桩。现浇混凝土桩是在场地位置上直接进行钻孔施工,在钻孔中浇筑混凝土,或者放置钢筋笼,最后浇筑混凝土。笔者以拉哇水电站下游河道防护工程为研究对象,详细描述了混凝土灌注桩施工工艺及施工方法,通过现场施工过程对其施工重难点进行分析。According to the drilling method of cast-in-place piles,they can be divided into drilling cast-in-place piles,sinking cast-in-place piles,manual excavation,excavation and bottom expansion,etc.In engineering practice,the most common ones are:drilling cast-in-place piles and sinking cast-in-place piles.Cast-in-place concrete piles are constructed by directly drilling holes at the site location,pouring concrete during the drilling process,or placing steel reinforcement cages,and finally pouring concrete.This article takes the downstream river protection project of the Lawa Hydropower Station as the research object,and describes in detail the construction process and method of concrete cast-in-place piles,and analyzes the key and difficult points of its construction during the on-site construction process.

关 键 词：混凝土灌注桩 水下混凝土浇筑 桩身完整性检测 

分 类 号：U417.1[交通运输工程—道路与铁道工程]