新型无机粘结竹复合梁柱抗弯矩连接抗震性能试验研究

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2024-11-29 DOI:10.1016/j.soildyn.2024.109113

Xin Zhang , Shurong Li , Yang Song , Shuming Li

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引用次数: 0

摘要

在本研究中，提出了一种创新的粘接槽和螺栓孔的方法，以提高无机粘结竹梁柱连接的抗震性能。设计了四种不同类型的无机粘结竹复合梁柱连接。包括常规的l型钢板开槽螺栓连接、l型钢板开槽螺栓连接（槽与螺栓孔粘接）、t型钢板开槽螺栓连接与柱内螺栓锚固（槽与螺栓孔粘接）、t型钢板开槽螺栓连接与柱内螺栓锚固（槽与螺栓孔粘接）、t型钢板开槽螺栓连接与柱内螺栓锚固（槽与螺栓孔粘接）。进行了单调和循环荷载试验，以评估新型无机粘结竹梁柱连接的抗震性能。试验结果表明，与常规螺栓连接相比，用胶水填充孔槽连接的承载力提高了40% ~ 120%。胶合连接的初始刚度约为常规连接的5-15倍。常规钢板开槽螺栓连接的延性和耗能能力均低于胶合连接。在螺栓孔和槽内粘结剂的共同作用下，钢板与竹复合材料作为一个整体共同作用，直至粘结剂失效。因此，粘接槽和螺栓孔是提高无机粘结竹复合材料连接抗震性能的有效方法。梁内开槽t型钢板、柱内粘接杆的螺栓粘接方式具有较好的抗震性能，在端部锚固上采取了一些措施后，发现其适用于实际工程。此外，根据欧洲规范5对胶填孔槽螺栓连接承载力的估算较为保守。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Experimental seismic behavior of novel inorganic-bonded bamboo composite beam-to-column moment-resisting connections

In this study, an innovative method of gluing the slot and the bolt holes was proposed to enhance the seismic performance of the inorganic-bonded bamboo beam-to-column connections. Four different types of inorganic-bonded bamboo composite beam-to-column connections were designed. They included the conventional bolted connection with slotted-in L-shaped steel plates, the bolted connection with slotted-in L-shaped steel plates (the slots and the bolt holes are glued), the bolted connection with slotted-in T-shaped steel plates and bolt anchorage in column (the slots and the bolt holes are glued), and the bolted connection with slotted-in T-shaped steel plates and glued-in rods in column (the slots and the bolt holes are glued). Monotonic and cyclic loading tests were conducted to evaluate the seismic behavior of the novel inorganic-bonded bamboo beam-to-column connections. The test results showed that the bearing capacity of the connections whose holes and slots are filled with glue increased by 40%–120 %, compared with the conventional bolted connection. The initial stiffness of the glued connections was about 5–15 times that of the conventional connection. The ductility and energy dissipation capacity of the conventional bolted connection with slotted-in steel plates was lower than that of the glued connections. Under the joint action of the adhesive in bolt holes and slots, the steel plate and the bamboo composite worked together as a whole until adhesive failure occurred. Therefore, gluing the slot and the bolt holes was an effective method for improving the seismic performance of the inorganic-bonded bamboo composite connections. The bolted and glued connection with slotted-in T-shaped steel plates in the beam and glued-in rods in the column showed a better seismic performance and was found to be suitable for practical engineering after taking some measures on the end anchorage. In addition, it was conservative to estimate the bearing capacity of the bolted connection with glue-filled holes and slots according to Eurocode 5.

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来源期刊

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.