铁道标准设计2018，Vol.62Issue(5)：49-52,4.DOI:10.13238/j.issn.1004-2954.201705180001
铁路刚构斜拉桥主墩大型基础深切灰岩顺层山坡治理技术
Mountain Slope Treatment Measures for Railway Rigid Cable-stayed Bridge Main Pier Large Foundation in Deep Limestone Bedding
曹立1
作者信息
- 1. 中铁第一勘察设计院集团有限公司,西安 710043
- 折叠
摘要
Abstract
Based on the reinforcement of Changwan-Yinshui Bridge No.2 pier large foundation of deep limestone on Qianjiang-Zhangjiajie-Changde Railway, this paper analyzes the formation and location of the weak interlayer in the limestone and the slope stability, and determines slope treatment measures. Geologic investigation on limestone joint development and sliding surface is conducted and borehole results are used to identify the location of weak layer. The research results show that the surface limestone is in a critical state and any disturbance may lead to land sliding;the slope stability index obtained from shear strength analysis after excavation of foundation pit is not satisfactory. Such comprehensive treatment measures are employed as design and construction procedures optimization, lowering free face attitude, disturbance reduction and slope reinforcement.关键词
铁路桥墩/基础/灰岩顺层/节理/泥土/临空面/承台/爆破Key words
Railway pile/Foundation/Limestone bedding/Joint/Soil/Free Face/Cushion Cap/Blas-ting分类
建筑与水利引用本文复制引用
曹立..铁路刚构斜拉桥主墩大型基础深切灰岩顺层山坡治理技术[J].铁道标准设计,2018,62(5):49-52,4.
