[1]冷　飞,蒋　勇,喻　君,等.下游边墩平面闸门门槽受剪承载力[J].郑州大学学报(工学版),2025,46(06):144-152.[doi:10.13705/j.issn.1671-6833.2025.04.006]
　LENG Fei,JIANG Yong,YU Jun,et al.The Shear Bearing Capacity of Planar Gate Slots of Downstream Side Pier[J].Journal of Zhengzhou University (Engineering Science),2025,46(06):144-152.[doi:10.13705/j.issn.1671-6833.2025.04.006]
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下游边墩平面闸门门槽受剪承载力()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
46
期数:
2025年06期
页码:
144-152
栏目:
出版日期:
2025-10-22

文章信息/Info

Title:
The Shear Bearing Capacity of Planar Gate Slots of Downstream Side Pier
文章编号:
1671-6833(2025)06-0144-09
作者:
冷　飞1;  蒋　勇1;  喻　君2;  陈思远1
1.河海大学 土木与交通学院,江苏 南京 210024;2.东南大学 土木工程学院,江苏 南京 211189
Author(s):
LENG Fei1;  JIANG Yong1;  YU Jun2;  CHEN Siyuan1
1.College of Civil Engineering and Transportation, Hohai University, Nanjing 210024, China; 2. School of Civil Engineering, Southeast University, Nanjing 211189, China
关键词:
平面闸门门槽;  受剪承载力;  破坏模式;  承载力计算;  水工结构
Keywords:
planar gate slot;  shear bearing capacity;  failure mode;  ultimate bearing capacity calculation;  hydraulic structures
分类号:
TV663TV33
DOI:
10.13705/j.issn.1671-6833.2025.04.006
文献标志码:
A
摘要:
由于缺乏系统研究,长期以来《水工混凝土结构设计规范》要求对承受较大闸门推力的平面闸门门槽进行受剪承载力复核却未能给出计算公式。作为规范修订专题研究,针对侧边和末端自由的边墩下游门槽开展了受剪承载力试验研究。以拉西瓦水电站进水口事故闸门门槽为原型,进行了两批次共14个事故闸门门槽结构的受剪承载力静力试验,研究了门槽结构受剪破坏过程和破坏形态,讨论了门槽结构受剪承载力的影响因素,基于影响因素分析和试验结果回归,提出了下游门槽受剪承载力计算公式以及门槽尺寸和混凝土强度的下限要求,并应用于实际工程。研究表明:门槽结构的受剪破坏为脆性破坏,破坏模式为起始于门槽内缘的裂缝在剪力作用下倾斜伸入下游墩墙形成斜向裂缝,余留混凝土不足以承担闸门推力时,门槽结构发生破坏;混凝土抗拉强度、横向钢筋用量以及闸墩颈部宽度与门槽受剪承载力正相关,其中横向钢筋用量的影响有上限。所提出的计算公式可用于复核平面闸门门槽结构受剪承载力。
Abstract:
Due to the lack of systematic research, the formula of the shear bearing capacity of the planar gate slot was absent for a long time, meanwhile the Code for Design of Hydraulic Concrete Structures required the review of the shear bearing capacity of the planar gate slots subjected to large gate force. As a special study on the revision of the design code, an experimental study on the shear bearing capacity of the downstream side gate slots with free side and end was carried out. Taking the emergency gate slots in the diversion tunnel of Laxiwa Hydropower Station as the prototype, the static experiments of the shear bearing capacity of two batches of total 14 gate slots were conducted. The process of shear failure and the failure mode was studied, the influencing factors of the shear bearing capacity of gate slots were discussed. Based on the analysis of influencing factors and the regression of the test results, the calculation formula for the shear bearing capacity of the gate slot and the lower limit for the size and concrete strength were proposed, which were applied in practical engineering. The study showed that the shear failure of the gate slots was brittle, the failure mode of the shear failure was that the crack starting from the inner edge of the gate slot inclined and extended into the downstream part of the pier with the action of the shear force, and the failure occurred while the concrete of the remain section was not enough to bear the gate force. The tensile strength of concrete, the amount of transverse reinforcement, and the width of the neck of the pier were positively correlated with the shear bearing capacity of the gate slot, and the influence of transverse reinforcement had an upper limit. The proposed calculation formula could be used to review the shear capacity of the gate slot structures.

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更新日期/Last Update: 2025-10-22