首页|施工洞口免支撑定型化精准封堵技术的应用研究

施工洞口免支撑定型化精准封堵技术的应用研究

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建筑施工洞口普遍成形质量低、易渗漏,传统楼板施工洞口的封堵采用单钢管支撑易跑模、渗漏,施工洞口位置也常常偏差较大.为了解决洞口质量问题,减小轴线竖向传递的误差,研制了一种适用于施工洞口的免支撑洞口留置模具.该模具由倒圆斗支模和支撑机构组成,在底模铺设完成后精准预留洞口留置装置,解决了洞口位置精度低、浇筑时易跑模、漏浆等问题.楼板混凝土浇筑后拆除模具进行临时洞口封堵,在底板上留置了可开闭的半圆活动板,实现免支撑,可快支快拆、保质提效,连接螺杆采用二段式止水螺杆,在拆除底模及加固件后进行结构预埋螺栓填充,防止渗漏水隐患.该技术在项目中应用后,显著降低了渗漏率,提高了成形质量,具有一定的推广价值.
Study on Application of Non-Support Stereotyped Precise Sealing Technique for Construction Openings
Construction openings often suffer from low forming quality and susceptibility to leakage,with traditional sealing methods using single steel pipe supports leading to misalignment and leakage.To address these issues,a non-support opening retention mold has been developed,suitable for construction openings.This mold,composed of a rounding bucket formwork and support mechanism,enables precise placement of the opening retention device after laying the bottom formwork,thus improving positional accuracy and preventing issues such as mold displacement and slurry leakage during pouring.Following concrete pouring of the floor slab,the mold is removed,and a semi-circular movable plate is left on the bottom plate to achieve support-free installation with rapid setup and removal,enhancing quality and efficiency.The two-stage water-stop screw is used for the connecting rod,and structural bolts are embedded after the removal of the bottom mold and reinforcement to prevent leakage.Application of this technique in the project significantly reduced leakage rates and improved forming quality,demonstrating valuable potential for wider adoption.

construction openingnon-supportstandardized moldprecise sealing

王永峰

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浙江欣捷建设有限公司 浙江 宁波 315000

施工洞口 免支撑 定型化模具 精准封堵

2025

建筑施工
上海建工(集团)股份有限公司

建筑施工

影响因子:0.584
ISSN:1004-1001
年,卷(期):2025.47(1)