摘要
为了提高碹窑民居的安全性能,提出了一种碹窑民居衬砌-锚杆加固技术,通过数值模拟研究方法,分析了加固碹窑民居的力学行为和稳定性能,研究了加固体系的力学机制。结果表明:衬砌结构作为传力构件,可与拱券结构共同传递窑顶自重荷载。加固结构可有效减小接触面的切向应力,同时改变切向应力的分布形态。碹窑民居加固后,最大强度折减系数由2.0增加至5.6,其稳定性能显著提升。衬砌结构左、右两侧拱顶、外侧窑腿及拱脚部位弯矩较大,该部位钢筋网应适当加密,以增大弯矩承载力。
In order to improve the safety of arch kiln dwellings,a lining-anchor bolts reinforcement technology of arch kiln dwellings was proposed.Based on the numerical simulation research method,the mechanical behavior and stability of the reinforced arch kiln dwelling was analyzed,and the mechanical mechanism of the reinforcement system was studied.The results show that the lining structure is a force-transmitting component,which can transmit the self-weight load of the kiln roof together with the arch structure.The reinforcement structure can effectively reduce the shear stress on the contact surface and change the distribution pattern of the shear stress.After the reinforcement of the kiln dwellings,the maximum strength reduction factor is increased from 2.0 to 5.6,and its stability is significantly improved.The bending moment of the vaults and the the outer kiln legs on the left and right sides and the arch foots of the lining structure is relatively large,and the steel mesh should be properly densified to increase the bending moment bearing capacity.
作者
高幸
王维玉
GAO Xing;WANG Wei-yu(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Research Institute of Architecture Science of Hebei Co.,Ltd.,Shijiazhuang 050021,China)
出处
《科学技术与工程》
北大核心
2023年第4期1635-1641,共7页
Science Technology and Engineering
基金
河北省建设厅项目(2018—2010)。
关键词
碹窑民居
破坏形式
加固体系
力学行为
稳定性能
arch kiln dwellings
damage form
reinforcement system
mechanical behavior
stability
