Investigation of the Effect of the Force Arm on the Bending Capability of Prestressed Glulam Beam  

作　　者：Yan Zhao Yuanyuan Wu Shengliang He Zhenglu Gao Ziyan Huang Chenzheng Lv 

机构地区：[1]Department of Civil Engineering and Architecture,Wuyi University,Wuyishan,354300,China [2]Experimental Forest Farm in Qingyuan County,Lishui,323000,China [3]Fujian Zhuanghe Bamboo Industry Technology Co.,Ltd.,Nanping,353000,China [4]Fujian Liuzheng New Materials Technology Co.,Ltd.,Nanping,353000,China

出　　处：《Structural Durability & Health Monitoring》2024年第5期641-661,共21页结构耐久性与健康监测（英文）

基　　金：supported by the Resources Industry Science and Technology Innovation Joint Funding Project of Nanping(N2021Z003);the Special Project of Service Industry Research of Wuyi University under Grant(2021XJFWCY03);the Research Launch Fund of Wuyi University’s Introduct Talent(YJ202309);the Fujian Training Program of Innovation and Entrepreneurship for Undergraduates(S202210397076);Research on the Stress Performance of Reinforced Bamboo Highway Guardrail with Embedded Channel Steel(LS202304).

摘　　要：Prestress enables the Glulam beam could make full use of the compression strength,and then increase the span,but it still could not reduce all drawbacks,such as cross-section weakening and small force arm.To avoid slotting and ensure suitable tension and compression couple,one kind of novel anchor has been proposed,which could meet the bearing capacity requirement.And then the bending test of prestressed Glulam beams with a geometric scale ratio of 1:2 was simulated,to investigate the effect of the force arm on bending capacities,failure modes,and deformation performance.Results show that increasing the force arm could improve the ultimate bending per-formance of the beam significantly,and the anchor arm length has a certain effect on the performance,but it is not obvious.Finally,based on Finite element method analysis,the practice design suggestions have been offered.

关 键 词：Force arm prestressed Glulam beam finite element method bearing capacity 

分 类 号：TU31[建筑科学—结构工程]