钢-混凝土组合塔筒中竖向灌浆接缝的受剪承载性能研究

王宇航; 王镜深; 谭继可; 帅富文; 任为

doi:10.13204/j.gyjzG23030119

钢-混凝土组合塔筒中竖向灌浆接缝的受剪承载性能研究

doi: 10.13204/j.gyjzG23030119

1. 重庆大学土木工程学院, 重庆 400045;
2. 重庆交通大学山区桥梁及隧道工程国家重点实验室, 重庆 400074

基金项目:

国家自然科学基金项目（51822804）；霍英东教育基金会青年教师基金项目（171066）。

详细信息

作者简介:
王宇航,男,1985年出生,博士,教授,wangyuhang@cqu.edu.cn。

通讯作者:
谭继可,男,1988年出生,博士,讲师,tanjike@cqjtu.edu.cn。

计量
- 文章访问数: 55
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- 被引次数: 0
出版历程
- 收稿日期: 2023-03-01
- 网络出版日期: 2023-10-17

Research on Shear Bearing Performance of Vertical Grouting Joints of Steel-Concrete Tower Barrel

1. School of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China

摘要

摘要: 钢-混凝土组合结构具有刚度大、稳定性好、施工相对快捷和维护费用低等优点，常被应用于风力发电机组的塔筒支撑结构中。钢-混凝土塔筒常采用垂直分段生产、运输，施工时通过二次浇筑高强灌浆料形成竖向灌浆接缝，接缝的抗剪性能直接影响塔筒的整体性能。通过对4个混凝土塔筒竖向灌浆接缝试件进行直剪荷载下的静力试验，分析破坏模式和荷载-滑移曲线，通过有限元软件ABAQUS建立了纯剪荷载下竖向灌浆接缝的精细化有限元模型，并与试验结果进行对比，验证了模型的准确性和适用性。提出了U形抗剪钢筋配筋率和是否配置纵向钢筋对承载力的影响，为参数分析和承载力计算公式推导打下基础。
- 钢-混凝土组合塔筒 /
- 竖向灌浆接缝 /
- 抗剪性能 /
- 有限元
Abstract: Owing to its high stiffness, good stability, relatively fast construction and low maintenance cost, steel-concrete composite structure is often used in the tower support structure of wind turbines. Steel-concrete tower barrel is usually produced and transported in vertical segments. During construction, the vertical grouting joint is formed by secondary pouring of high-strength grouting material. The shear performance of the joint directly affects the overall performance of the tower barrel. Through the static test of four vertical grouting joint specimens of concrete tower barrel under direct shear load, the failure mode and load-slip curve were analyzed, and ABAQUS was used to establish the refined finite element model of vertical grouting joint under pure shear load. The accuracy and applicability of the model were verified by comparing with the test results, which not only verified the influence of ratio of U-shaped shear bars and longitudinal reinforcement on bearing capacity but also laid a foundation for parameter analysis and calculation formula of bearing capacity.
- steel-concrete composite tower barrel /
- vertical grouting joint /
- shear resistance /
- finite element

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