装配式主体结构竖向构件座浆施工技术研究

Research on Grouting Construction Technology for Vertical Components of Prefabricated Main Structure

为保证装配式主体结构竖向构件套筒灌浆工序的顺利实施,专门针对套筒灌浆的紧前座浆施工工序展开研究。总结了传统座浆技术的优劣,为彻底解决传统座浆做法的缺点,结合现场实际工况展开研究,在传统的技术上实施技术改良和技术拓展。在研究过程中首先开发出了堆砌式座浆技术,再针对现场实际工况依次开发出了座浆料、模板、钉子组合封堵座浆技术,竖式模板封脚的座浆技术,钢垫片或者钢筋、座浆料组合座浆的技术,座浆料角钢组合座浆的技术,座浆料、密封橡胶条、角钢组合座浆的技术。研究实践表明:上述技术都对传统的座浆技术实施了延伸,克服了传统座浆技术的不足,从根本上保证了灌浆的顺利进行,使得灌浆的成功率达到100%,每层楼座浆后灌浆的技术间隙时间减少2 h左右,加快了工期。且该座浆技术操作简单,成本低。

In order to ensure the smooth implementation ofthe sleeve grouting process for the vertical components ofthe prefabricated main structure,research has been conducted specifically on the pre grouting process of the sleeve grouting and the grouting construction process.Firstly,the advantages and disadvantages of traditional grouting techniques were summarized,and during the application of traditional grouting techniques,grouting bursts occurred.To thoroughly address the shortcomings of traditional grouting methods,research is conducted based on the actual working conditions on site,and technical improvements and extensions are implemented on traditional technologies.In the process of research,the stacked grouting technology was first developed,and then the grouting material,template,and nail combination sealing grouting technology was developed based on the actual working conditions on site;Grouting technology using vertical formwork to seal the feet;The technology of combining steel gaskets or steel bars and base slurry for base slurry;The grouting technology of the combination of grouting material and angle steel grouting;Grouting technology for seat slurry,sealing rubber strip,and angle steel combination seat slurry.Research practice has shown that the above technologies have extended the traditional grouting technology,overcome the shortcomings of traditional grouting technology,and fundamentally ensured the smooth progress of grouting,resulting in a success rate of 100%for grouting.The technical gap time for grouting after each floor of the building has been reduced by abouttwo hours,accelerating the construction period.And the slurry technologyis simpleto operate and low in cost.