Characteristic analysis on the compression-bending capacity of segmental joint based on the investigated joint parameters
Characteristic analysis on the compression-bending capacity of segmental joint based on the investigated joint parameters
复制标题
基于所研究的接头参数的节段接头压弯性能特性分析
DOI：
10.1016/j.tust.2020.103444
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发表时间：
2020-08
影响因子：
6.9
通讯作者：
Zhang Zeng
中科院分区：
文献类型：
--
作者：
Zhang Li;Feng Kun;Li Maoran;He Chuan;Xiao Mingqing;Zhang Zeng
抗压弯曲能力，又称压膜作用，是节理的一项重要力学性能。然而，由于缺乏有效的计算方法和对节理参数的定量分析，在节理设计中尚未得到应用。据此，基于前人提出的节理抗弯承载力计算方法和对大量实际工程节理参数的研究，得到节理抗弯承载力曲线的特征形状和特征点，并定量分析节理参数对节理承载力的影响。结果表明：节理节点抗压抗弯能力曲线为抛物线曲线，可分为两部分（第一部分和第二部分），其中第二部分的分界点代表锚杆屈服和混凝土破坏同时发生；曲线上有5个特征点，在此基础上定义了螺栓的4种不同应力状态，不同特征点对节理面参数变化的敏感性不同，但最大变化均在2倍以上。管片宽度和混凝土强度对管片节点抗压抗弯能力的影响是整体的，变化幅度较大，而螺栓参数的影响主要体现在较低轴压下的微小变化。研究结果可为节理节点的设计和承载力评价提供支持和指导。
The compression-bending capacity, also known as compressive membrane action, is an important mechanical property of segmental joints. However, owing to a lack of validated calculation methods and quantitative analysis of joint parameters, it has not been applied in the design of segmental joints. Thus, based on a method for calculating the compression-bending capacity of segmental joints proposed previously and joint parameters investigated from a number of practical engineering projects, the characteristic shapes and points of the compression-bending capacity curve are obtained, and the influence of joint parameters on the bearing capacity of segmental joints are quantitatively analyzed. The results show that the compression-bending capacity curve for a segmental joint is a parabolic curve, which can be divided into two parts (parts I and II), where the demarcation point between parts I and II represents that bolt yielding and concrete failure happen at the same time. There are five characteristic points on the curve, based on which four different stress states of the bolt are defined, different characteristic points have different sensitivity to the changes in the joint surface parameters, but the largest changes are all more than double. The influence of segment width and concrete strength on the compression-bending capacity of segmental joints is integral and varies widely, while the influence of the bolt parameters is mainly reflected in small changes at lower axial pressures. The results of this study can provide support and guidance for the design and bearing capacity evaluation of segmental joints.
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影响因子：
5.5
作者：
O. Arnau;C. Molins
通讯作者：
O. Arnau;C. Molins
影响因子：
6.9
作者：
S. Afshan;Jby Yu;Standing;R. Vollum;D. Potts
通讯作者：
S. Afshan;Jby Yu;Standing;R. Vollum;D. Potts
输水隧道管片节点非线性特性试验研究
影响因子：
6.9
作者：
Jin Yuelang;Ding Wenqi;Yan Zhiguo;Soga Kenichi;Li Zili
通讯作者：
Li Zili
影响因子：
6.9
作者：
J. Chen;H. Mo
通讯作者：
J. Chen;H. Mo
DOI：
10.4028/www.scientific.net/amm.170-173.1716
发表时间：
2012-05
期刊：
Applied Mechanics and Materials
影响因子：
--
作者：
D. Yang;Xin Wang
通讯作者：
D. Yang;Xin Wang