铁道科学与工程学报2012，Vol.9Issue(3)：39-44,6.
软弱围岩中桥隧搭接多源损伤影响因素分析
Influence factors analysis on multiple source damages of bridge and tunnel lap joint project in weak surrounding rock
摘要
Abstract
Indoor model tests and influence factors analysis were carried out on bridge and tunnel lap joint project in weak surrounding rocks ( grade IV or V ). The results show that; The mechanical behaviors and multiple source damages during the construction and post operation stage can be influenced by surrounding rock grade, bridge span and foundation style, length of lap joint period, vehicle loads and impacts etc. , which for the long run, may not only cause structure damages of bridge or tunnel key parts, but also do harm to the durability of bridge, tunnel lining, abutment and its pile foundation or the stability of surrounding rocks nearby the tunnel entrance. In order to avoid the damages or even destructions due to various kinds of harmful effects, and decrease or reduce the oversize settlement of side or upper slopes nearby the entrance and the occurrence of instability , collapse or slide of slope, some key parts of bridge, tunnel lining and rocks or side and upper slopes nearby the entrance should be strengthened, along with the adoption of pile foundation, the reduction of bridge span, the lengthening of lap joint period, the avoidance of oversize vehicle loads and impacts etc.关键词
桥隧搭接/室内模型试验/桥梁/隧道/软弱围岩/力学行为/多源损伤Key words
bridge and tunnel lap joint projects/ indoor model test/ bridge/ tunnel/ weak surrounding rock/ mechanical behavior/ multiple source damage分类
建筑与水利引用本文复制引用
孙广臣,傅鹤林,何山,巢万里,谭捍华..软弱围岩中桥隧搭接多源损伤影响因素分析[J].铁道科学与工程学报,2012,9(3):39-44,6.基金项目
国家自然科学基金面上资助项目(50878213) （50878213）
贵州省重大科技专项项目(2008015) （2008015）
湖南省交通建设计划项目(200928) （200928）
