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Sliding Air-Rib Foundation Pit Membrane: Movable Enclosure Support Tech

Date: 2025-10-13 Author: 科琦气膜

滑轨气肋式基坑气膜是专为深基坑、大跨度基坑施工设计的特种气膜结构,核心是通过 “气肋支撑 + 滑轨移动” 的组合,解决传统基坑支护(如钢构、混凝土)搭建慢、灵活性差、成本高的痛点,实现基坑施工期间的临时封闭、环境管控、安全防护一体化。

科滑轨气肋式基坑气膜-效果图 (3)_副本.jpg

一、核心结构:“气肋 + 滑轨” 的双重优势

气肋支撑系统替代传统钢桁架 / 混凝土立柱,以高强度耐磨膜材(如 PVDF、PTFE)制成的 “充气肋梁” 为主要承重结构,通过持续稳压充气(压力 0.02-0.05MPa)形成刚性支撑,可实现无内柱大跨度(单跨 20-50m),完全释放基坑内部施工空间,避免支护结构遮挡机械作业。

滑轨移动系统在基坑两侧冠梁或周边硬化地面设置钢轨,气膜主体通过底部滑轮与滑轨连接,可根据施工进度分段移动 / 整体开合(如沿基坑长度方向逐段推进,或单侧打开便于材料运输),无需整体拆除重建,适配基坑 “分步开挖、分段施工” 的节奏。

二、核心优势:为什么基坑施工更选它?

3-7 天完成单段安装(工厂预制 + 现场充气);无内柱,100% 释放施工空间;可随施工进度移动、开合,重复利用;全封闭结构,可集成喷淋 / 新风,控尘降噪;单次投入30%-50%,重复使用成本更低。

三、适用场景:这些基坑项目适配

城市核心区基坑:周边建筑密集、对扬尘 / 噪音管控严格(如住宅、学校旁),全封闭结构可将扬尘控制在 PM10≤50μg/m³,噪音降低 15-20dB。

深大跨度基坑:开挖深度≥8m、跨度≥20m 的项目(如地铁车站、地下综合体),无内柱设计适配大型盾构机、挖掘机作业。

季节性施工基坑:多雨、严寒地区(如南方雨季、北方冬季),封闭气膜可形成 “内部小环境”,避免雨水倒灌、低温影响混凝土养护。

临时周转性基坑:工期短、需重复利用支护结构的项目(如市政管线基坑、临时停车场基坑),移动滑轨设计可实现 “一地多用”。

总之,滑轨气肋式基坑气膜是 “轻量化、高灵活、低能耗” 的基坑支护新方案,尤其适配现代城市基坑施工对 “效率、环保、安全” 的三重需求,目前已广泛应用于地铁、市政、房建等领域的基坑项目中。


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