摘要
有限空间台背回填压实度问题对市政道路工程的影响在短时间内很难被察觉,且极难通过有效的现场试验进行分析。应用强度折减法模拟回填料压实度的变化的理念突破了传统的边坡稳定分析应用范畴,以回填料的强度、黏聚力为主控因素,建立了"管廊双翼搭板"地层-板相互作用力学模型,综合利用理论分析、数值模拟分析了"管廊双翼搭板"施工力学效应,揭示了板-土结构相互作用机理,提出了"管廊双翼搭板"设计计算方法。该方法避免了有限空间回填料压实度变化过程中路基与路面结构受力体系频繁转换问题,提高了结构质量与安全,降低了返工成本。
It is difficult to detect the impact of backfill compaction degree of abutment in finite space on the municipal road engineering in a short time,and it is very difficult to analyze through the effective field test.The traditional application field of slope stability analysis can be broken by simulating the change of backfill compact degree by strength reduction method.Taking the strength and cohesion of backfill as the main controlling factors,the mechanical model of stratum-slab interaction of"pipe gallery double wing approach slab"is established.Based on theoretical analysis and numerical simulation,the construction mechanical effect of"pipe gallery double wing approach slab"is analyzed,the interaction mechanism of slab-soil structure is revealed,and the design calculation method of"double wing approach slab of pipe gallery"is proposed.The method avoids the frequent transformation of the stress system between the road foundation and the pavement structure during the change of backfill compact in finite space,improves the quality and safety of the structure and reduces the rework cost.
作者
陶汝专
李尚
李朝辉
黄俊文
曹红军
文木
TAO Ruzhuan;LI Shang;LI Zhaohui;HUANG Junwen;CAO Hongjun;WEN Mu(China Construction Fifth Engineering Bureau the Third Construction Co.,Ltd.,Changsha,Hunan 410004,China)
出处
《建筑施工》
2021年第6期1096-1098,共3页
Building Construction
基金
国家自然科学基金项目(51378083)
长沙市科技计划重点课题(K110706-11)。
关键词
有限空间
强度折减法
搭板
数值模拟
finite space
strength reduction method
approach slab
numerical simulation
