地震力作用下基于FLAC^(3D)的边坡支护锚索有效长度计算  

FLAC^(3D) Study of the Effective Length of the Ground Anchors in Anchored Soldier Pile Reinforced Slope in Jishou under Seismic Conditions

作　　者：彭文祥[1] 季强[1] 

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083

出　　处：《土工基础》2016年第6期634-636,640,共4页Soil Engineering and Foundation

基　　金：国家自然科学基金资助项目(50578086)

摘　　要：桩锚支护边坡体系受力复杂,目前一些基础理论研究仍然不甚清楚,已远远滞后于工程实践,尤其是在抗震设计方面。一些桩锚支护边坡中对于锚索长度的选取没有一个可靠的理论基础,通过实际工程对比FLAC^(3D)数值模拟提出一套在地震力作用下,桩锚支护体系锚索的轴力分布,得出对特定地质条件下的锚索极限锚固长度的计算方法,现场实测数据与计算结果接近,表明该方法具有一定的适用性,并且该方法所涉及方程简单,求解容易,更便于工程师在地震条件下设计应用。The theoretical aspects of the soldier piles with ground anchors in the landslide remediation,especially under the seismic conditions,are not explicitly explained and are left behind the practical applications.The current practice does not have a rational and reliable method for the determination for the required length of ground anchors.This paper present a method for selecting the length of the ground anchors under certain subsurface conditions for the landslide remediation projects.The numerical analysis under seismic conditions was performed using FLAC3 Dand the results were consistent with the observed data.

关 键 词：桩锚支护 边坡工程 抗震设计 FLAC^3D数值模拟 

分 类 号：TU472[建筑科学—结构工程]