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

Yan Zhao^1,*, Yuanyuan Wu², Shengliang He³, Zhenglu Gao¹, Ziyan Huang¹, Chenzheng Lv⁴
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
* Corresponding Author: Yan Zhao. Email: email

Structural Durability & Health Monitoring https://doi.org/10.32604/sdhm.2024.049601

Received 11 January 2024; Accepted 07 April 2024; Published online 14 May 2024

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Abstract

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 performance 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.

Keywords

Force arm; prestressed Glulam beam; finite element method; bearing capacity

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

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