扣件式钢管支架在湿陷性黄土基坑群开挖支护中的应用.pdf

施工技术 2013年6月上 24 CONSTRUCTION TECHNOLOGY 第42卷第11期 D0I:10.7672/gjs2013110024 扣件式钢管支架在湿陷性黄土基坑群开挖支护中的应用* 惠渊峰1，梅源2，胡长明2 (1.陕西省建筑职工大学建筑工程系，陕西西安710068；2.西安建筑科技大学土木工程学院，陕西西安710055) [摘要]以湿陷性黄土地区某集中供热项目管网工程施工为背景，介绍了扣件式钢管支架作为检查井基坑群支护 体系的方案设计、安全性验算及施工要求.实践表明，由于黄土基坑稳定性好，因而可以采用扣件式钢管支架作为 黄土地区深度<10m的基坑群开挖支护体系.扣件式钢管支护体系具有搭设灵活、施工速度快、能够较好适应基 坑群尺寸多变的特点，且能够节约成本，保证施工安全. [关键词]脚手架；扣件式钢管支架；湿陷性黄土；基坑；支护；施工技术 [中图分类号]TU731.2 [文献标识码]A [文章编号]1002-8498(2013)11-0024-03 Application of Fastener-style Steel Pipe Scaffold as Support for Foundation Excavation in Collapsible Loess Areas Hui Yuanfeng' Mei Yuan2 Hu Changming2 (1.Department of Civil Engineering Architecture Staff University of Shaanxi Province Xi'an Shaanxi 710068 China; 2.College of Civil Engineering Xi'an University of Architecture and Technology Xi'an Shaanxi 710055 China) Abstract:Based on a central heating pipe network project this paper introduces the scheme design safety assessment and construction requirement for the application of fastener-style steel pipe scaffold as support for inspection pits in collapsible loess areas.Practice shows that fastener-style steel pipe scaffolds can be used as supporting framework for excavations under 10m in loess areas because the loess pits have good stability.Fastener-style steel pipe scaffold is featured by flexibility and fast construction which can adapt to frequent change of the pit dimensions reduce the cost and ensure construction safety. Key words:scaffolds;fastener-style steel pipe scaffolds;coll...