基坑混凝土支撑的平面稳定性设计计算探讨
Design and Calculation of Plane Stability of Concrete Support for Foundation Pit
胡吉松1
作者信息
- 1. 广东冠技岩土工程有限公司,广东广州 510640
- 折叠
摘要
基坑相关规范对基坑支撑平面内的计算长度系数规定不详,通常对支撑平面内计算长度系数取为 1.0.通过对基坑混凝土支撑的平面稳定性进行分析,认为按框架布置的支撑平面内稳定性不容忽视,且为支撑承载力的主控要素,平面内的计算长度系数大于 1.根据稳定屈曲理论,提出了一种简单适用的长度计算系数公式,并提出提高支撑稳定性的关键措施.
Abstract
Regulations concerning foundation pits often lack specific provisions regarding the calculation length factor within the plane of pit supports,commonly assuming a value of 1.0.Through an analysis of the planar stability of foundation pit concrete sup-ports it is evident that the stability within the support plane,arranged as a framework,cannot be overlooked and constitutes a primary controlling factor for support-bearing capacity,implying a calculation length factor greater than 1.Drawing from the theory of stable buckling,a simple and applicable length calculation coefficient formula is proposed,along with key measures to improve support sta-bility.
关键词
基坑/混凝土支撑/平面内稳定/长度系数Key words
foundation pit/concrete support/in-plane stability/calculated length coefficient引用本文复制引用
出版年
2024
NETL
NSTL
万方数据