Construction Quality Control of Sleeve Grouting Connections for Precast Pier Columns in Municipal Bridges
市政桥梁预制墩柱套筒灌浆连接施工质量控制

摘要

套筒灌浆是市政预制墩柱与承台关键连接形式，其质量关乎桥梁结构整体的安全性和耐久性。本文阐述套筒灌浆 原理与施工流程，从材料、施工工艺分析质量影响因素，围绕材料验收、墩柱吊装、浆料调配、饱满度管控及后期养 护明确质控要点。结合施工便捷与经济性优化连接构造，针对出浆口附近灌浆料回流、空腔缺料问题，采用灌浆令制 度、全过程视频监控、严格人员和工艺管理，形成施工准备、过程监督、质量验收全过程监理控制体系，可以保证灌 浆饱满度和连接可靠。工程资料表明灌浆饱满度决定连接性能，据此提出责任追溯、标准化交底、智能信息化监测等 管控举措，给同类型市政桥梁预制拼装施工提供借鉴。

Abstract

Sleeve grouting serves as the critical connection between precast pier columns and bearing caps in municipal bridges, with its quality determining the overall safety and durability of bridge structures. This paper elaborates on the technical principle and construction procedure of sleeve grouting, analyzes quality influencing factors from material and construction process perspectives, and specifies key quality control measures covering material inspection, pier hoisting, grout mixing, grout fullness control and post-grouting curing.To balance construction efficiency and cost-effectiveness, the connection structure is optimized. Aiming at grout backflow and void defects near sleeve outlet holes, a full-process supervision system spanning preparation, on-site supervision and acceptance is established via grouting permit regulation, full-time video monitoring and strict management of operators and construction techniques to secure sufficient grout filling and reliable connections.Engineering references prove grout fullness dominates connection performance. Accordingly, management solutions including full-life responsibility tracing, standardized technical disclosure and intelligent information-based monitoring are proposed to provide references for precast assembly construction of similar municipal bridges.