吊脚山地建筑边坡稳定性控制与结构设计

Slope Stability Control and Structural Design of Stilted Buildings in Mountainous Area

某工程项目位于重庆市两江新区大竹林组团,原始场地存在约40m的高差,4栋教学建筑沿场地东侧边坡依次布置于山地斜坡上,采用混凝土框架结构形式,属于典型的吊脚山地结构。该文根据建筑场地特征及结构的不规则情况,对吊脚结构所处的边坡、结构基础、结构主体以及三者之间的关系进行分析设计,针对高边坡使用坡面防护+分级放坡+桩板挡墙支护,主体结构采用大直径嵌岩灌注桩基础,设计处理基础与边坡的相互关系,分析其施工可行性。同时,结合吊脚山地建筑结构的受力特点,在吊脚高度范围局部设置剪力墙,并从结构整体荷载取值、水平及竖向结构布置、抗震性能化以及抗倾覆验算等方面进行全面分析设计。通过设计,保证了边坡的稳定性、基础的可靠性及结构主体的安全性,可为吊脚山地建筑结构的设计提供参考。

The project is located in Dazhulin Group Liangjiang New Area Chongqing.The original site has a height difference of about 40m.Four teaching buildings are arranged on the mountain slope along the eastern slope of the site in turn,adopting the form of concrete frame structure,which is the typical hillside architrcture of the suspending buildings.According to the characteristics of the construction site and the irregularity of the structure,this paper analyzes and designs the slope of the hanger structure,the structural foundation,the main body of the structure and the relationship among the three factors.High slopes are protected by slope surface,graded slope release,and pile-board retaining wall.The main structure adopts large diameter rock-socketed pile foundation.This paper introduces the design and treatment of the relationship between foundation and slope and analyzes the feasibility of its construction.Besides,combined with the stress characteristics of the hillside architrcture of the suspending buildings,the shear wall is set locally in the height range of the hanger,and the comprehensive analysis and design is carried out from the overall load value of the structure,horizontal and vertical structure layout,seismic performance and anti-overturn checking calculation.Through analysis and design,the stability of slope,the reliability of foundation and the safety of structure main body are guaranteed,which can provide reference for the design of hanging mountain building structure.