水利水电科技进展Issue(3)：37-41,5.DOI:10.3880/j.issn.10067647.2015.03.008
注浆加筋减载涵洞土压力和内力的数值分析
Numerical analysis of the earth pressures and internal forces of the culvert with surrounding grouting and reinforcement
摘要
Abstract
The load reducing method of the culvert with surrounding grouting and reinforcement is introduced to reduce the earth pressures and internal forces of highway culverts under high fills. Earth pressures and internal forces of the culvert with grouting and grouting covered with reinforcement are calculated by numerical simulations using finite element method, and the load reducing effects with different lateral grouting areas are compared. Additionally, the effects of geogrid stiffness, and the modulus of grouting on the earth pressures as well as internal forces of culvert are studied on the basis of parameter analysis. The results show that the grouting width surrounding the culvert wall is half of the culvert width, while the installation of geogrid reinforcement on the top of grouting area can further reduce earth pressures and internal forces. The increase of the geogrid stiffness makes very little effect on load reduction and the modulus in grouting area has a massive impact on earth pressures and internal forces. When the modulus is close to 100 MPa, earth pressures and internal forces reach at the lower values, which insignificantly decline as the increase of modulus.关键词
涵洞/土压力/涵体内力/减载效果/数值模拟Key words
culvert/earth pressure/internal force of the culvert boby/load reducing effect/numerical simulation分类
建筑与水利引用本文复制引用
马强,李丽华,肖衡林..注浆加筋减载涵洞土压力和内力的数值分析[J].水利水电科技进展,2015,(3):37-41,5.基金项目
国家自然科学基金(51208187) （51208187）
教育部新世纪优秀人才支持计划(NCET-11-0962) （NCET-11-0962）
黄土地区公路建设与养护技术交通行业重点实验室开放课题(KLTLR-Y12-11) （KLTLR-Y12-11）
