预应力混凝土槽形梁的力学性能:全尺寸实验和非线性 FE 分析

IF 1.9 4区 工程技术 Q3 ENGINEERING, CIVIL KSCE Journal of Civil Engineering Pub Date : 2024-08-14 DOI:10.1007/s12205-024-1513-6
Yan Yuan, Ming Yang, Fei Wang, Yuliang Cai, Wentao Xie
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引用次数: 0

摘要

在简支撑下,对 35 米预应力混凝土槽形梁的力学性能进行了全面的试验研究。获得了试验梁的荷载-位移曲线和开裂荷载。为了研究单线槽梁的横向抗裂性,使用 ABAQUS 建立了非线性有限元模型。通过与实验结果进行比较,验证了有限元模型的准确性。利用验证后的有限元模型研究了槽形梁在不同横向预应力加固方案下的抗裂性能,并讨论了槽形梁横向预应力的合理加固形式。结果表明,对于试验梁,无横向预应力配筋的模型不符合中国规范的要求。单线槽梁设置横向预应力钢筋是非常必要的,横向预应力钢筋的间距可从 2 米减小到 1.25 米。
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Mechanical Properties of Prestressed Concrete Trough Girder: Full-Scale Experiment and Nonlinear FE Analysis

A full-scale experimental study on the mechanical properties of a 35 m prestressed concrete trough girder was carried out under simply supported supports. The load-displacement curve and cracking load of the test girder were obtained. In order to study the transverse crack resistance of single-line trough girder, a nonlinear finite element model was established by using ABAQUS. The accuracy of the finite element model was verified by comparing with the experimental results. The verified finite element model was used to study the crack resistance of the trough girder under different transverse prestressed reinforcement schemes, and then the reasonable reinforcement form of transverse prestress of the trough girder was discussed. The results show that for the test girder, the model without transverse prestressed reinforcement does not meet the requirements of Chinese code. It is very necessary for single-line trough girder to install transverse prestressed reinforcement, and the spacing of transverse prestressed reinforcement can be reduced from 2 m to 1.25 m.

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来源期刊
KSCE Journal of Civil Engineering
KSCE Journal of Civil Engineering ENGINEERING, CIVIL-
CiteScore
4.00
自引率
9.10%
发文量
329
审稿时长
4.8 months
期刊介绍: The KSCE Journal of Civil Engineering is a technical bimonthly journal of the Korean Society of Civil Engineers. The journal reports original study results (both academic and practical) on past practices and present information in all civil engineering fields. The journal publishes original papers within the broad field of civil engineering, which includes, but are not limited to, the following: coastal and harbor engineering, construction management, environmental engineering, geotechnical engineering, highway engineering, hydraulic engineering, information technology, nuclear power engineering, railroad engineering, structural engineering, surveying and geo-spatial engineering, transportation engineering, tunnel engineering, and water resources and hydrologic engineering
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