隧道开挖台车中心抗冲击参数优化与性能验证  

Study on Parameter Optimization of Impact Resistance of Tunnel Excavation Trolley Under Central Impact Loads and Its Performance Verification

作　　者：丁颖楠 许维炳[1] 沈铂坦 陈彦江[1] 李世安[2] DING Yingnan;XU Weibing;SHEN Botan;CHEN Yanjiang;LI Shian(College of Architecture and Civil Engineering,Beijing University of Technology Beijing,100124,China;Research Institute of Highway Ministry of Transport Beijing,100088,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]交通运输部公路科学研究院,北京100088

出　　处：《振动．测试与诊断》2022年第4期718-725,826,共9页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51908015,51978021);国家重点研发计划资助项目(2017YFC1500604);北京工业大学基础研究基金资助项目(004000546318524)。

摘　　要：以某型隧道开挖台车为例,考虑其顶部几何中心受冲击荷载作用,基于数值分析方法对斜撑角度等参数对其中心抗冲击性能的影响进行了研究,获得了中心冲击荷载作用下该型台车的优化参数。设计制作了具有优化参数的台车缩尺试验模型,通过试验对优化模型的中心静力承载能力和中心抗冲击性能进行了验证。结果表明:中心冲击荷载作用下,门式结构斜撑角度越大,台车的抗冲击性能越强;材料屈服强度越高,台车在局部屈服后的抗冲击性能越强;边界条件对中心冲击荷载作用下台车的抗冲击性能影响不显著。优化缩尺试验模型能够满足施工静载和中心冲击荷载作用的需求。Based on numerical analysis method,some parameters are studied to clarify their influences of impact resistance capacity of one typical trolley under central impact loads,such as bracing angle,etc.With the optimal parameters obtained,two scaled test models of the optimized trolley are designed and manufactured.The central bearing capacity and the central impact resistance capacity are carried out under the static and impact tests.Re⁃sults show that higher bracing angle can obtain larger impact resistance capacity,and increased yield strength materials can improve impact resistance capacity,especially after local yield occurrence.The boundary condi⁃tions have not significant effect on impact resistance of trolley.The optimized parameters can well meet the safe⁃ty requirements of trolley under central impact loads.Proposed optimization analysis method and verification pro⁃cess can be used as a reference for future studies of trolley.

关 键 词：隧道安全 隧道 隧道施工 数值分析 模型试验 

分 类 号：U458.3[建筑科学—桥梁与隧道工程] TU312[交通运输工程—道路与铁道工程] TU317.1