伞型斜向支撑主动支顶技术在结构改造中的应用  

Application of Active Roof-propping Technique Using Umbrella-shaped Braces in Structural Renovation

作　　者：何春凯[1] 王霓[1] 邢广寺[1] 陈港[1] 刘健[1] 

机构地区：[1]中国建筑科学研究院建筑结构研究所,北京100013

出　　处：《建筑结构》2005年第10期49-50,54,共3页Building Structure

摘　　要：由于改造施工期间柱下基础将临时拆除,需要采取临时支顶措施保证施工期间的结构安全。在该工程中采用了新颖的伞型斜向支撑技术,并利用螺旋式千斤顶进行主动支顶。由于支顶在改造施工的上面一层进行,不但解决了支撑点的问题,而且为改造施工提供了较大的空间,取得了较好的技术经济效果。During structural renovation, the foundation underearth certain columns may have to be removed. So temporary roof-propping measures need to be taken to ensure structural safety. In connection with an engineering example, this paper introduces the application of a novel active roof-propping technique which uses umbrella-shaped braces and screw jacks for active propping. The roof was supported in the adjacent upper floor, which solved the anchor problem and provided sufficient space for renovation construction. This technique is economical.

关 键 词：改造 柱 伞型支撑 主动支顶 螺旋式千斤顶 支撑技术 结构改造 斜向 应用 技术经济效果 

分 类 号：TU470.3[建筑科学—结构工程] TP393.0[建筑科学—土工工程]