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短螺栓型膨胀式自应力灌浆卡箍滑动承载力试验研究
引用本文:石湘,张洪珲,李聪,王树青,徐皓.短螺栓型膨胀式自应力灌浆卡箍滑动承载力试验研究[J].海洋工程,2015,33(5):113-117.
作者姓名:石湘  张洪珲  李聪  王树青  徐皓
作者单位:中国海洋大学 工程学院,青岛 266100;中国海洋大学 工程学院,青岛 266100;中国海洋大学 工程学院,青岛 266100;中国海洋大学 工程学院,青岛 266100;海洋石油工程股份有限公司 设计公司,天津 300452
基金项目:山东省科技发展计划资助项目(2012GHY11523);中国海洋石油总公司科技资助项目(CNOOC-KJ 125 ZDXM 05 GC 00GC 2014-02)
摘    要:对短螺栓型膨胀式自应力灌浆卡箍的滑动承载力进行了试验研究,首先从自应力产生机理介绍了短螺栓型灌浆卡箍结构,分析了这种结构的特点和优越性,然后在不同膨胀剂掺量和长细比下进行了这种卡箍试件的滑动承载力测试。试验结果表明:滑动承载力随着膨胀剂掺量的增加线性增加;在长细比为1.02~1.67的范围内,滑动应力差异不大,但当长细比增加到3.33时,滑动应力明显降低;而且短螺栓型膨胀式自应力灌浆卡箍比近似结构尺寸的传统长螺栓型卡箍能提供更大的滑动应力。试验结果为短螺栓型膨胀式灌浆卡箍的工程应用提供了一定的设计依据。

关 键 词:水下加固  膨胀式  自应力  灌浆卡箍  短螺栓结构  滑动承载力

Tests on slip capacity for the short-bolt-type expansive stressed grouted clamp
SHI Xiang,ZHANG Honghui,LI Cong,WANG Shuqing and XU Hao.Tests on slip capacity for the short-bolt-type expansive stressed grouted clamp[J].Ocean Engineering,2015,33(5):113-117.
Authors:SHI Xiang  ZHANG Honghui  LI Cong  WANG Shuqing and XU Hao
Institution:Engineering College, Ocean University of China, Qingdao 266100, China;Engineering College, Ocean University of China, Qingdao 266100, China;Engineering College, Ocean University of China, Qingdao 266100, China;Engineering College, Ocean University of China, Qingdao 266100, China;Engineering Company, Offshore Oil Engineering Co., Ltd., Tianjin 300452, China
Abstract:Tests on the slip capacity of the short-bolt-type expansive stressed grouted clamp are carried out. Based on the mechanism of self-stress formation, the proposed short-bolt-type grouted clamp is introduced and its structural feature and superiority are analyzed. Then the slip capacity of the clamp model is tested under different agent contents and different slenderness ratios. The test result demonstrates that the slip capacity increases linearly with the increase of the agent content. The slip stress changes are very small within the slenderness ratio range of 1.02 to 1.67. But the slip stress decreases obviously when the slenderness ratio increases to 3.33. And the short-bolt expansive stressed grouted clamp can provide larger slip stress than the traditional long-bolt clamp with the similar structural size. The tests introduced in this paper will establish a design foundation for engineering application of the short bolt-type expansive grouted clamp.
Keywords:underwater repair  expansive  stressed  grouted clamp  short-bolt structure  slip capacity
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