无反顶施工电梯基础施工方法
2019-01-30林瑞王恕森王洪福
林瑞 王恕森 王洪福

【摘 要】施工电梯广泛运用于房屋建筑工程中,施工电梯基础一般直接置于地下室顶板上,其支撑体系采用钢管层层反顶至地下室底板。施工电梯拆除时间晚,地下室反顶支撑区域空间狭小,导致该区域二次结构、装饰装修、机电管线安装等施工困难或无法施工。论文结合以往施工经验及本工程实际情况,通过优化施工电梯基础安装区域主体结构,提高施工电梯安装区主体结构强度,采用无反顶施工电梯基础,使地下室反顶区域施工不受施工电梯影响,具有可缩短工期和提高经济效益等优点。
【Abstract】The construction elevator is widely used in building construction. The foundation of the construction elevator is usually directly placed on the basement roof, and its supporting system is supported by steel tube layer jacking to the basement floor. The construction elevator demolition time is late, and the space of the basement anti-jacking support area is narrow, which leads to the construction difficulty or impossibility of secondary structure, decoration, and decoration, mechanical and electrical pipeline installation in the area. Combining with the past construction experience and the actual situation of this project, this paper optimizes the main structure of the installation area of the construction elevator foundation, improves the strength of the main structure of the construction elevator installation area, and adopts the construction elevator foundation without anti-jacking construction, so that the construction of the basement anti-jacking area is not affected by the construction elevator, which has the advantages of shortening the construction period and improving the economic benefits.
【關键词】施工电梯;支撑体系;无反顶
【Keywords】construction elevator; support system; without anti-jacking
【中图分类号】TU753 【文献标志码】A 【文章编号】1673-1069(2019)09-0191-02
1 工程概况及主体结构优化情况
1.1 工程总体概况
本工程位于辽宁省大连市中山区东港商务区(港东街与港兴路交汇),建筑功能为公寓和商业。工程总建筑面积为219308m2,其中地上建筑面积186414m2,地下建筑面积31808m2,包括1#~5#五栋超高层建筑和6#楼一个地下车库,最大建筑高度为168m(剖面显示171m)。
1#楼主体为框筒结构,建筑层高38层,建筑高度168m(剖面显示171m);2#~5#楼主体为剪力墙结构,建筑层高45层,建筑高度150m;6#楼地下车库为地下二层,建筑高度10.7m。
1.2 主体结构优化情况
在地下室顶板施工前,假定在施工电梯基础导轨安装点加设一条或两条与地下室顶板主体结构梁相交叉的结构梁,然后将施工电梯参数和电梯最大载重总重量输入设计院提供的建筑结构模型中进行荷载核算,核算出所加优化结构梁的荷载信息,最后核算出优化结构梁的配筋信息。……
