Bonding performance of steel plate aerated concrete blocks with different adhesive areas

被引：0
|
作者：
Liu H. [1 ]
Niu Y. [1 ]
Liu Q. [1 ]
Li Y. [2 ]
He X. [1 ]
机构：
[1] College of Civil Engineering, Henan University of Technology, Zhengzhou
[2] Langdong Architectural Design Firm Co., Ltd, Beijing
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2023年 / 39卷 / 23期
关键词：
biaxial loading; bond strength; friction; pressure; structural layer; underground granary;
D O I：
10.11975/j.issn.1002-6819.202307082
中图分类号：
学科分类号：
摘要：
A reinforced concrete subsoil granary has been the promising type in agricultural production in recent years. Among them, a steel plate is used as the waterproof layer, which is connected to the reinforced concrete silo wall by welded bolts on the contact side of the steel plate and the reinforced concrete silo wall. The moisture-proof layer is taken as the aerated concrete blocks using epoxy structural adhesive. Specially, the aerated concrete block is bonded to the steel plate, thus forming a structural layer of epoxy structural adhesive bonding the steel plate and aerated concrete block. This study aims to evaluate the safety and reliability of this structural layer under the horizontal lateral pressure and friction of grain. The results are as follows: 1) Once the adhesive area was the same, there was the increase in the deformation, ultimate bearing capacity and bond strength at the interface of steel plate aerated concrete block under horizontal-vertical bidirectional loading, compared with the vertical unidirectional loading. The better bonding performance was then achieved under the horizontal lateral pressure that generated by the grain storage in the silo; 2) The damage pattern of vertical unidirectional loading was obtained, where the aerated concrete blocks were peeled off from the epoxy structural adhesive; In horizontal-vertical bidirectional loading, a penetrating crack was formed in the aerated concrete blocks, and then the whole block moved downward under the horizontal load, but without peeling off. A comparison was made on the damage patterns of vertical unidirectional loading and horizontal-vertical bidirectional loading. Therefore, it was beneficial to the stabilization of the interface, in the case of aerated concrete blocks under vertical loading while applied horizontal lateral pressure. 3) The bond strength was closely related to the friction force on the silo wall, when the adhesive area was A, 0.8A, 0.5A (A was the contact area between a single aerated concrete block and a steel plate). Once the adhesive area was 0.5A, the smallest height of grain storage was achieved under the vertical unidirectional loading, indicating the larger than the actual height. Therefore, the structural layer with the gluing area of 0.5A was fully met the requirements of the bearing capacity and bonding strength under grain storage loads in the design of underground granaries. 4) It was feasible to adopt the construction practice of epoxy structural adhesive bonding steel plates and aerated concrete blocks for underground granaries under the horizontal lateral pressure and vertical friction of grain. 5) The bearing capacity and bond strength were fully met the requirements, when the bonding area of epoxy structural adhesive exceeded 50% of the total area of aerated concrete block. Further consideration should be given to the influence of the epoxy structural adhesive thickness and application mode on the displacement, bearing capacity, bond strength and damage pattern of the structural layer. The findings can provide a strong reference for the safety and reliability of the waterproof and moisture-proof structural layer in the new underground granary. © 2023 Chinese Society of Agricultural Engineering. All rights reserved.
引用
收藏
页码：285 / 290
页数：5
相关论文
共 18 条
  • [1] JIN Libing, LIANG Xinya, HUO Chengding, Et al., Engineering tests and numerical analysis of underground concrete silo, Journal of Civil and Environmental Engineering, 42, 3, pp. 40-45, (2020)
  • [2] ZHANG H, WANG H, ZHOU Y, Et al., Waterproofing performance of polypropylene–concrete wall of underground silo under combined compressive stress and water pressure, Heliyon, 8, 12, pp. 1-16, (2022)
  • [3] WANG Zhenqing, HOU Zhilong, ZHANG Qingzhang, Et al., Performance analysis of axial compressive behavior for precast steel plate-concrete composite silo wall of underground silo, Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CASE), 37, 1, pp. 59-67, (2021)
  • [4] LIU Haiyan, XU Xiangnan, ZHANG Hao, Et al., Friction analysis of underground silos during backfilling, Modern Food Science and Technology, 37, 6, pp. 175-183, (2021)
  • [5] LIU Haiyan, MENG Weixin, WANG Zhenqing, Et al., Buoyancy early warning of underground granary with “2:8 lime soil” backfilling, Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CASE), 35, 11, pp. 299-305, (2019)
  • [6] JIN Libing, LIU Feixiao, TIAN Dongjie, Anti-floating test in construction and closed-water test process of underground reinforced concrete silos, Journal of Henan University of Technology (Natural Science Edition), 38, 2, pp. 105-108, (2017)
  • [7] ZHAO C, FENG Y, WANG W, Et al., Mechanical properties and numerical analysis of underground continuous wall in underground grain silo foundation Pit, Buildings, 13, 2, pp. 1-20, (2023)
  • [8] GUO Shihao, Stress Analysis and Structural Optimization of a New Type of Underground Reinforced Concrete Silo, (2016)
  • [9] 3, pp. 188-189, (2015)
  • [10] ZHANG Hao, MENG Qingting, TAO Yuanqing, Et al., Water pressure resistance test of plastic concrete waterproofing system for underground granaries, Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CASE), 36, 21, pp. 292-299, (2020)
12