苍岭隧道采用了顶隔板式竖井纵向通风排烟,顶隔板与已建隧道衬砌之间采用植筋连接方式,植筋连接在火灾下的安全性关系到顶隔板和隧道内的安全。通过FDS计算了该隧道内部空间在火灾情况下的温度场,以顶隔板与二衬连接处的环境温度作为边...苍岭隧道采用了顶隔板式竖井纵向通风排烟,顶隔板与已建隧道衬砌之间采用植筋连接方式,植筋连接在火灾下的安全性关系到顶隔板和隧道内的安全。通过FDS计算了该隧道内部空间在火灾情况下的温度场,以顶隔板与二衬连接处的环境温度作为边界条件,利用AN SY S计算了植筋点的温度变化曲线,结合植筋胶在高温下的性能检测报告研究了植筋胶在火灾高温下的安全性。展开更多
In order to optimize the out-of-plane compression performance of the wood structure,wood-based 2-D lattice structures were designed and manufactured with oriented strand board as the panel and birch round stick as the...In order to optimize the out-of-plane compression performance of the wood structure,wood-based 2-D lattice structures were designed and manufactured with oriented strand board as the panel and birch round stick as the core by using a simple insert-glue method.In this experiment,the different thicknesses of the upper and lower panels,the different shavings arrangement directions of the upper and lower panels and the different configurations of the specimens were used to analyze the compression performance of the specimens under multivariable conditions.Through the combination of experimental test and theoretical analysis,we analyzed and compared different failure types of the structure and multiple compression parameters.The results showed that the shavings arrangement direction of the panel has a more important influence on the whole specimen than the thickness of the panel,especially the transverse shavings of the panel can withstand greater shear stress than the longitudinal shavings for a specimen.展开更多
文摘苍岭隧道采用了顶隔板式竖井纵向通风排烟,顶隔板与已建隧道衬砌之间采用植筋连接方式,植筋连接在火灾下的安全性关系到顶隔板和隧道内的安全。通过FDS计算了该隧道内部空间在火灾情况下的温度场,以顶隔板与二衬连接处的环境温度作为边界条件,利用AN SY S计算了植筋点的温度变化曲线,结合植筋胶在高温下的性能检测报告研究了植筋胶在火灾高温下的安全性。
基金Supports of National Natural Science Foundation of China(No.31470581)Fundamental Research Funds for the Central Universities(No.2572016EBJ1)Northeast Forestry University College-level Innovative Training Program Project Funding(No.CL201802)are gratefully acknowledged.
文摘In order to optimize the out-of-plane compression performance of the wood structure,wood-based 2-D lattice structures were designed and manufactured with oriented strand board as the panel and birch round stick as the core by using a simple insert-glue method.In this experiment,the different thicknesses of the upper and lower panels,the different shavings arrangement directions of the upper and lower panels and the different configurations of the specimens were used to analyze the compression performance of the specimens under multivariable conditions.Through the combination of experimental test and theoretical analysis,we analyzed and compared different failure types of the structure and multiple compression parameters.The results showed that the shavings arrangement direction of the panel has a more important influence on the whole specimen than the thickness of the panel,especially the transverse shavings of the panel can withstand greater shear stress than the longitudinal shavings for a specimen.
