郑州大学学报（工学版）2016，Vol.37Issue(1)：49-53,5.DOI:10.3969/j.issn.1671-6833.201410012
基于离散-连续耦合方法的土工格室加筋碎石承载能力数值模拟
Numerical Simulation of the Bearing Capacity for Geocell Reinforced Gravel Based on Discrete-Continuous Coupling Calculation
摘要
Abstract
The base material of geocell reinforced gravel has strong ability to adapt to the deformation of the subgrade, but its bearing capacity and deformation mechanism not clear. The discrete-continuous coupling cal-culation was used to calculate the mechanical properties of different geocell reinforced gravel composite struc-ture and the composite structure in which the geocell was not set up in the process of loading. The geocells in-clude 9 kinds whose height is 100mm, 150mm and 200mm,whose welding torch is 400 mm, 600 mm and 800 mm. Then the elasticity modulus of the bearing layer is analyzed. The results indicated that the bearing capac-ity of the subgrade got an obvious improvement after gravel was enforced by the geocell. Elasticity modulus of structure layer increased by 38. 61%. When the height of the geocell is fixed, with the decreasing of the geo-cell welding torch, the loading capacity of geocell structural layer is increasing. When the geocell welding torch is fixed, with the increasing of the geocell height, the loading capacity of geocell structural layer is accordingly increasing. The geocell model of 400 -200 mm, which big vertical displacement accounted for 17. 36% of whole bearing layer area, evenly distributed, and the best reinforced.关键词
道路工程/土工格室/加筋结构/承载能力/数值模拟Key words
road engineering/geocell/reinforced structure/bearing capacity/numerical modeling分类
交通工程引用本文复制引用
汪海年,张然,周俊,刘玉,尤占平..基于离散-连续耦合方法的土工格室加筋碎石承载能力数值模拟[J].郑州大学学报（工学版）,2016,37(1):49-53,5.基金项目
交通运输部科技资助项目(201231879210) （201231879210）
国家科技支撑计划课题资助项目(2014BAG05B04) （2014BAG05B04）
中央高校基本科研业务费专项资金资助项目(CHD2012ZD013) （CHD2012ZD013）
