Fatigue Resistance of Sealing Joint to Shear Movement at Earthquake

密封接头抗地震剪切运动的疲劳性能

• 批准号: 08650665
• 负责人: TANAKA Kyoji
• 金额: $ 1.47万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650665/
• 关键词: Sealant; Shear fatigue; Fatifue test; Shape of cross section; Size of cross section; Crack; Movement; Stress analysis; 伸縮疲労; ポリサルファイド; 目地形状; ム-ブメント; 疲労破断

To support design of sealing joint to shear movement, the effect of cross section of a bead on shear fatigue resistance was studied experimentally and analytically. The results obtained are as follows.(1) Size of a bead does not so clearly affect their fatigue resistance when it has the same shape factor (Depth /Width of joint).(2) As for shape of a bead, the deeper the depth of concave shape is, the lower the fatigue resistance becomes. Durable cross section of a bead to shear movement is considered to be rectangular or slightly concave shapes.(3) The stresses of a bead of.being shear deformed were studied using a finite element method. The calculated result shows that stress concentration could be avoided at the slightly concave shape,(4) There was the shortcoming such as unexpected crack initiation from bead ends in a parallel type specimen used for present fatigue test. To avoid the unexpected failure during a shear test, a ring type specimen of not having bead ends was proposed and a fatigue test apparatus for the specimen was also developed. The data of shear fatigue resistance of a sealant were successfully obtained without the unexpected failure by the new shear test method.

为支持密封接头抗剪切运动设计，通过试验和分析研究了密封接头截面对抗剪切疲劳性能的影响。所得结果如下：(1)在相同形状因子（连接深度/宽度）下，头的尺寸对其抗疲劳性能的影响不明显。(2)对于凹形的形状，凹形的深度越深，抗疲劳性能越低。持久的横截面的一个头剪切运动被认为是矩形或微凹形状。(3)头的应力。采用有限元法对其剪切变形进行了研究。计算结果表明，在微凹形处可以避免应力集中。(4)目前用于疲劳试验的平行型试样存在头端意外起裂等缺点。为了避免在剪切试验中出现意外破坏，提出了一种无头端环型试件，并研制了试件疲劳试验装置。采用新的剪切试验方法，成功地获得了密封胶的抗剪切疲劳性能数据，没有出现意外破坏。

项目成果

Youngjoo SHIN, Hiroyuki MIYAUCHI,Kyoji TANAKA and Takayuki HIRAI: "Effect of Cross Sectional Size on Fatigue Resistance of Sealant by Shear Movement" Summaries of Technical Papers of Annual Meeting AIJ. A-1. 401-402 (1998)

Youngjoo SHIN、Hiroyuki MIYAUCHI、Kyoji TANAKA 和 Takayuki HIRAI：“剪切运动对横截面尺寸对密封胶抗疲劳性能的影响”AIJ 年会技术论文摘要。

Kyoji TANAKA and Hiroyuki MIYAUCHI: "New Shear Fatigue Test Method for Building Sealants" Summaries of Technical Papers of Annual Meeting AIJ. A-1. 273-274 (1998)

Kyoji TANAKA 和 Hiroyuki MIYAUCHI：《建筑密封胶剪切疲劳试验新方法》AIJ 年会技术论文摘要。

Kyoji TANAKA, Hiroyuki MIYAUCHI and Takayuki HIRAI: "Effect of Cross-sectional Shapes of Polysulfide Sealant on Shear Fatigue Resistance to Sliding Joint Movement" American Society for Testing and Materials, STP. 1334. 43-50 (1999)

Kyoji TANAKA、Hiroyuki MIYAUCHI 和 Takayuki HIRAI：“聚硫密封剂的横截面形状对滑动接头运动的剪切疲劳抗力的影响”美国测试与材料学会，STP。

Hiroyuki MIYAUCHI and Kyoji TANAKA: "Effect of Cross-sectional Shapes on Fatigue Failure of sealants by Shear Movement" Proceedings of 3^<rd> Korea and Japan Joint Symposium on Building Materials. 157-164 (1997)

Hiroyuki MIYAUCHI 和 Kyoji TANAKA：“横截面形状对剪切运动引起的密封剂疲劳失效的影响”第三届韩日建筑材料联合研讨会论文集。

K.Tanaka, H.Miyauch and T.Hirai: "EFFECT OF CROSS-SECTIONAL SHAPES OF POLYSULFIDE SEALANT ON SHEAR FATIGUE RESISTANCE TO SLIDING JOINT MOVEMENT" American Society for Testing and Materials, STP. 1334. 43-50 (1999)

K.Tanaka、H.Miyauch 和 T.Hirai：“聚硫密封剂的横截面形状对滑动接头运动的剪切疲劳阻力的影响”美国测试与材料学会，STP。