CAJ | 학술논문

为研究玻璃纤维增强塑料(GFRP)筋尺寸及材料组分与拉伸性能的关系，针对直径不同且同时GF体积分数(vf)不同的聚乙烯(PE)基和不饱和聚酯(UP)基GFRP筋进行拉伸试验。结果表明，两种GFRP筋在拉伸过程中的整个破坏模式以“裂纹破坏模式”为主。PE基GFRP筋的直径是影响其初裂强度(fc)和破坏强度(fp)的主要因素，当直径为20 mm时，筋体的fc和fp均达到最高。UP基GFRP筋直径较小时，其和vf对fc和fp的影响不大，当直径大于16 mm后，其对fc的影响更显著；当vf变化不大时，除在直径为20 mm时fp有一升高的突变值外，其它直径下fp的变化较小。PE基GFRP筋的fc比UP基GFRP筋高很多，其抗开裂性能更好。
위연구파리섬유증강소료(GFRP)근척촌급재료조분여랍신성능적관계，침대직경불동차동시GF체적분수(vf)불동적취을희(PE)기화불포화취지(UP)기GFRP근진행랍신시험。결과표명，량충GFRP근재랍신과정중적정개파배모식이“렬문파배모식”위주。PE기GFRP근적직경시영향기초렬강도(fc)화파배강도(fp)적주요인소，당직경위20 mm시，근체적fc화fp균체도최고。UP기GFRP근직경교소시，기화vf대fc화fp적영향불대，당직경대우16 mm후，기대fc적영향경현저；당vf변화불대시，제재직경위20 mm시fp유일승고적돌변치외，기타직경하fp적변화교소。PE기GFRP근적fc비UP기GFRP근고흔다，기항개렬성능경호。
In order to research the relationship between tensile properties of GFRP bar and the size and material component, tensile tests were carried out on polyethylene (PE) and unsaturated polyester (UP) matrix GFRP bars with different diameter in which volume fraction (Vf) of glass fiber varied. The results show that the main whole failure mode of the two GFRP bars is"crack failure mode". Initial cracking strength (fc) and failure strength (fp) of PE matrix GFRP bar are affected more significantly by the diameter, the GFRP bar with 20 mm diameter has the maximum in fc and fp. When the diameter of UP matrix GFRP bars is less,fc and fp are affected slightly by the diameter and Vf,but fc is affected more significantly by the diameter above 16 mm diameter,when Vf has very small changes,except that fp has a improved break value when the diameter is 20 mm,fp changes slightly in other diameters. fc of PE matrix GFRP bar is higher than that of UP matrix GFRP and the anti-cracking performance of the former is better.