大跨度框架结构施工期活荷载现场调查与统计分析  

In Situ Investigation and Statistical Analysis of Live Loads of Large Span Frame Structure During Construction

作　　者：简超军 胡长明[1] 叶正武 袁一力 刘阳[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《施工技术》2015年第15期32-34,43,共4页Construction Technology

基　　金：国家自然科学基金项目(50978219);陕西省教育厅专项科研计划项目(12JK0898);包头市科技计划项目(2013X1007);陕西社会发展科技攻关项目(2015SF290)

摘　　要：结合某大跨度框架结构工程,对其施工期的活荷载进行了调查统计,统计时间贯穿该建筑物的整个建造期,重点调查统计了施工中的模板搭设、钢筋绑扎、混凝土浇筑和混凝土养护期4个阶段的堆载情况。结合工程实际划分3m×2m的统计网格,通过现场调查和统计分析,认为施工活荷载服从指数分布,计算出了分布函数的参量,给出了施工期施工活荷载标准值的建议值。Combining with a large span frame structure project,a survey on live loads of this building has been conducted. The survey lasted the whole construction period of the building. The loads in the four phases of formwork, reinforcement, concrete pouring and curing were recorded. According to the actual situation of the building, divided the floor plan into 3m× 2m grid. Based on the result of survey and statistical analysis, it is found that the live loads submit to exponential distribution. And the parameters of exponential function were estimated, the standard value of live loads during construction was also suggested.

关 键 词：混凝土 框架结构 施工期活荷载 现场调查 统计分析 

分 类 号：TU312.1[建筑科学—结构工程]